release: v3.9.0

The auto-commit section instructed Hephaestus to automatically commit after
implementation work. Users who didn't know about this behavior would get
surprise commits — a trust-breaking behavioral change flagged by 5 Oracle
reviews as the sole publish blocker for 3.9.0.

.github/workflows/publish-platform.yml

@@ -35,15 +35,15 @@ jobs:
   # - Uploads compressed artifacts for the publish job
   # =============================================================================
   build:
-    runs-on: ${{ matrix.platform == 'windows-x64' && 'windows-latest' || 'ubuntu-latest' }}
+    runs-on: ${{ startsWith(matrix.platform, 'windows-') && 'windows-latest' || 'ubuntu-latest' }}
     defaults:
       run:
         shell: bash
     strategy:
       fail-fast: false
-      max-parallel: 7
+      max-parallel: 11
       matrix:
-        platform: [darwin-arm64, darwin-x64, linux-x64, linux-arm64, linux-x64-musl, linux-arm64-musl, windows-x64]
+        platform: [darwin-arm64, darwin-x64, darwin-x64-baseline, linux-x64, linux-x64-baseline, linux-arm64, linux-x64-musl, linux-x64-musl-baseline, linux-arm64-musl, windows-x64, windows-x64-baseline]
     steps:
       - uses: actions/checkout@v4
 
@@ -95,14 +95,18 @@ jobs:
             case "$PLATFORM" in
               darwin-arm64) TARGET="bun-darwin-arm64" ;;
               darwin-x64) TARGET="bun-darwin-x64" ;;
+              darwin-x64-baseline) TARGET="bun-darwin-x64-baseline" ;;
               linux-x64) TARGET="bun-linux-x64" ;;
+              linux-x64-baseline) TARGET="bun-linux-x64-baseline" ;;
               linux-arm64) TARGET="bun-linux-arm64" ;;
               linux-x64-musl) TARGET="bun-linux-x64-musl" ;;
+              linux-x64-musl-baseline) TARGET="bun-linux-x64-musl-baseline" ;;
               linux-arm64-musl) TARGET="bun-linux-arm64-musl" ;;
               windows-x64) TARGET="bun-windows-x64" ;;
+              windows-x64-baseline) TARGET="bun-windows-x64-baseline" ;;
             esac
             
-            if [ "$PLATFORM" = "windows-x64" ]; then
+            if [[ "$PLATFORM" == windows-* ]]; then
               OUTPUT="packages/${PLATFORM}/bin/oh-my-opencode.exe"
             else
               OUTPUT="packages/${PLATFORM}/bin/oh-my-opencode"
@@ -119,7 +123,7 @@ jobs:
           PLATFORM="${{ matrix.platform }}"
           cd packages/${PLATFORM}
           
-          if [ "$PLATFORM" = "windows-x64" ]; then
+          if [[ "$PLATFORM" == windows-* ]]; then
             # Windows: use 7z (pre-installed on windows-latest)
             7z a -tzip ../../binary-${PLATFORM}.zip bin/ package.json
           else
@@ -155,7 +159,7 @@ jobs:
       fail-fast: false
       max-parallel: 2
       matrix:
-        platform: [darwin-arm64, darwin-x64, linux-x64, linux-arm64, linux-x64-musl, linux-arm64-musl, windows-x64]
+        platform: [darwin-arm64, darwin-x64, darwin-x64-baseline, linux-x64, linux-x64-baseline, linux-arm64, linux-x64-musl, linux-x64-musl-baseline, linux-arm64-musl, windows-x64, windows-x64-baseline]
     steps:
       - name: Check if already published
         id: check
@@ -184,7 +188,7 @@ jobs:
           PLATFORM="${{ matrix.platform }}"
           mkdir -p packages/${PLATFORM}
           
-          if [ "$PLATFORM" = "windows-x64" ]; then
+          if [[ "$PLATFORM" == windows-* ]]; then
             unzip binary-${PLATFORM}.zip -d packages/${PLATFORM}/
           else
             tar -xzvf binary-${PLATFORM}.tar.gz -C packages/${PLATFORM}/

.github/workflows/publish.yml

@@ -189,7 +189,7 @@ jobs:
           VERSION="${{ steps.version.outputs.version }}"
           jq --arg v "$VERSION" '.version = $v' package.json > tmp.json && mv tmp.json package.json
           
-          for platform in darwin-arm64 darwin-x64 linux-x64 linux-arm64 linux-x64-musl linux-arm64-musl windows-x64; do
+          for platform in darwin-arm64 darwin-x64 darwin-x64-baseline linux-x64 linux-x64-baseline linux-arm64 linux-x64-musl linux-x64-musl-baseline linux-arm64-musl windows-x64 windows-x64-baseline; do
             jq --arg v "$VERSION" '.version = $v' "packages/${platform}/package.json" > tmp.json
             mv tmp.json "packages/${platform}/package.json"
           done

.issue-comment-2064.md

@@ -0,0 +1,61 @@
+[sisyphus-bot] 
+
+## Confirmed Bug
+
+We have identified the root cause of this issue. The bug is in the config writing logic during installation.
+
+### Root Cause
+
+**File:** `src/cli/config-manager/write-omo-config.ts` (line 46)
+
+```typescript
+const merged = deepMergeRecord(existing, newConfig)
+```
+
+When a user runs `oh-my-opencode install` (even just to update settings), the installer:
+1. Reads the existing config (with user's custom model settings)
+2. Generates a **new** config based on detected provider availability
+3. Calls `deepMergeRecord(existing, newConfig)` 
+4. Writes the result back
+
+**The problem:** `deepMergeRecord` overwrites values in `existing` with values from `newConfig`. This means your custom `"model": "openai/gpt-5.2-codex"` gets overwritten by the generated default model (e.g., `anthropic/claude-opus-4-6` if Claude is available).
+
+### Why This Happens
+
+Looking at `deepMergeRecord` (line 24-25):
+```typescript
+} else if (sourceValue !== undefined) {
+  result[key] = sourceValue as TTarget[keyof TTarget]
+}
+```
+
+Any defined value in the source (generated config) overwrites the target (user's config).
+
+### Fix Approach
+
+The merge direction should be reversed to respect user overrides:
+```typescript
+const merged = deepMergeRecord(newConfig, existing)
+```
+
+This ensures:
+- User's explicit settings take precedence
+- Only new/undefined keys get populated from generated defaults
+- Custom model choices are preserved
+
+### SEVERITY: HIGH
+
+- **Impact:** User configuration is overwritten without consent
+- **Affected Files:** 
+  - `src/cli/config-manager/write-omo-config.ts`
+  - `src/cli/config-manager/deep-merge-record.ts`
+- **Trigger:** Running `oh-my-opencode install` (even for unrelated updates)
+
+### Workaround (Until Fix)
+
+Backup your config before running install:
+```bash
+cp ~/.config/opencode/oh-my-opencode.jsonc ~/.config/opencode/oh-my-opencode.jsonc.backup
+```
+
+We're working on a fix that will preserve your explicit model configurations.

AGENTS.md

@@ -1,10 +1,10 @@
 # oh-my-opencode — OpenCode Plugin
 
-**Generated:** 2026-02-21 | **Commit:** 86e3c7d1 | **Branch:** dev
+**Generated:** 2026-02-24 | **Commit:** fcb90d92 | **Branch:** dev
 
 ## OVERVIEW
 
-OpenCode plugin (npm: `oh-my-opencode`) that extends Claude Code (OpenCode fork) with multi-agent orchestration, 44 lifecycle hooks, 26 tools, skill/command/MCP systems, and Claude Code compatibility. 1208 TypeScript files, 143k LOC.
+OpenCode plugin (npm: `oh-my-opencode`) that extends Claude Code (OpenCode fork) with multi-agent orchestration, 46 lifecycle hooks, 26 tools, skill/command/MCP systems, and Claude Code compatibility. 1208 TypeScript files, 143k LOC.
 
 ## STRUCTURE
 
@@ -14,14 +14,14 @@ oh-my-opencode/
 │   ├── index.ts              # Plugin entry: loadConfig → createManagers → createTools → createHooks → createPluginInterface
 │   ├── plugin-config.ts      # JSONC multi-level config: user → project → defaults (Zod v4)
 │   ├── agents/               # 11 agents (Sisyphus, Hephaestus, Oracle, Librarian, Explore, Atlas, Prometheus, Metis, Momus, Multimodal-Looker, Sisyphus-Junior)
-│   ├── hooks/                # 44 hooks across 39 directories + 6 standalone files
+| `hooks/`                # 46 hooks across 39 directories + 6 standalone files
 │   ├── tools/                # 26 tools across 15 directories
 │   ├── features/             # 19 feature modules (background-agent, skill-loader, tmux, MCP-OAuth, etc.)
 │   ├── shared/               # 100+ utility files in 13 categories
 │   ├── config/               # Zod v4 schema system (22+ files)
 │   ├── cli/                  # CLI: install, run, doctor, mcp-oauth (Commander.js)
 │   ├── mcp/                  # 3 built-in remote MCPs (websearch, context7, grep_app)
-│   ├── plugin/               # 8 OpenCode hook handlers + 44 hook composition
+│   ├── plugin/               # 8 OpenCode hook handlers + 46 hook composition
 │   └── plugin-handlers/      # 6-phase config loading pipeline
 ├── packages/                 # Monorepo: comment-checker, opencode-sdk, 10 platform binaries
 └── local-ignore/             # Dev-only test fixtures
@@ -34,7 +34,7 @@ OhMyOpenCodePlugin(ctx)
   ├─→ loadPluginConfig()         # JSONC parse → project/user merge → Zod validate → migrate
   ├─→ createManagers()           # TmuxSessionManager, BackgroundManager, SkillMcpManager, ConfigHandler
   ├─→ createTools()              # SkillContext + AvailableCategories + ToolRegistry (26 tools)
-  ├─→ createHooks()              # 3-tier: Core(35) + Continuation(7) + Skill(2) = 44 hooks
+  ├─→ createHooks()              # 3-tier: Core(37) + Continuation(7) + Skill(2) = 46 hooks
   └─→ createPluginInterface()    # 8 OpenCode hook handlers → PluginInterface
 ```
 
@@ -87,7 +87,7 @@ Fields: agents (14 overridable, 21 fields each), categories (8 built-in + custom
 
 - **Test pattern**: Bun test (`bun:test`), co-located `*.test.ts`, given/when/then style (nested describe with `#given`/`#when`/`#then` prefixes)
 - **Factory pattern**: `createXXX()` for all tools, hooks, agents
-- **Hook tiers**: Session (22) → Tool-Guard (10) → Transform (4) → Continuation (7) → Skill (2)
+- **Hook tiers**: Session (23) → Tool-Guard (10) → Transform (4) → Continuation (7) → Skill (2)
 - **Agent modes**: `primary` (respects UI model) vs `subagent` (own fallback chain) vs `all`
 - **Model resolution**: 3-step: override → category-default → provider-fallback → system-default
 - **Config format**: JSONC with comments, Zod v4 validation, snake_case keys

assets/oh-my-opencode.schema.json

@@ -24,19 +24,7 @@
     "disabled_agents": {
       "type": "array",
       "items": {
-        "type": "string",
-        "enum": [
-          "sisyphus",
-          "hephaestus",
-          "prometheus",
-          "oracle",
-          "librarian",
-          "explore",
-          "multimodal-looker",
-          "metis",
-          "momus",
-          "atlas"
-        ]
+        "type": "string"
       }
     },
     "disabled_skills": {
@@ -960,6 +948,9 @@
                 }
               },
               "additionalProperties": false
+            },
+            "allow_non_gpt_model": {
+              "type": "boolean"
             }
           },
           "additionalProperties": false
@@ -3248,6 +3239,11 @@
           "prompt_append": {
             "type": "string"
           },
+          "max_prompt_tokens": {
+            "type": "integer",
+            "exclusiveMinimum": 0,
+            "maximum": 9007199254740991
+          },
           "is_unstable_agent": {
             "type": "boolean"
           },

benchmarks/bun.lock

@@ -0,0 +1,62 @@
+{
+  "lockfileVersion": 1,
+  "configVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "hashline-edit-benchmark",
+      "dependencies": {
+        "@ai-sdk/openai": "^1.3.0",
+        "@friendliai/ai-provider": "^1.0.9",
+        "ai": "^6.0.94",
+        "zod": "^4.1.0",
+      },
+    },
+  },
+  "packages": {
+    "@ai-sdk/gateway": ["@ai-sdk/gateway@3.0.55", "", { "dependencies": { "@ai-sdk/provider": "3.0.8", "@ai-sdk/provider-utils": "4.0.15", "@vercel/oidc": "3.1.0" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-7xMeTJnCjwRwXKVCiv4Ly4qzWvDuW3+W1WIV0X1EFu6W83d4mEhV9bFArto10MeTw40ewuDjrbrZd21mXKohkw=="],
+
+    "@ai-sdk/openai": ["@ai-sdk/openai@1.3.24", "", { "dependencies": { "@ai-sdk/provider": "1.1.3", "@ai-sdk/provider-utils": "2.2.8" }, "peerDependencies": { "zod": "^3.0.0" } }, "sha512-GYXnGJTHRTZc4gJMSmFRgEQudjqd4PUN0ZjQhPwOAYH1yOAvQoG/Ikqs+HyISRbLPCrhbZnPKCNHuRU4OfpW0Q=="],
+
+    "@ai-sdk/openai-compatible": ["@ai-sdk/openai-compatible@2.0.30", "", { "dependencies": { "@ai-sdk/provider": "3.0.8", "@ai-sdk/provider-utils": "4.0.15" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-iTjumHf1/u4NhjXYFn/aONM2GId3/o7J1Lp5ql8FCbgIMyRwrmanR5xy1S3aaVkfTscuDvLTzWiy1mAbGzK3nQ=="],
+
+    "@ai-sdk/provider": ["@ai-sdk/provider@1.1.3", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-qZMxYJ0qqX/RfnuIaab+zp8UAeJn/ygXXAffR5I4N0n1IrvA6qBsjc8hXLmBiMV2zoXlifkacF7sEFnYnjBcqg=="],
+
+    "@ai-sdk/provider-utils": ["@ai-sdk/provider-utils@2.2.8", "", { "dependencies": { "@ai-sdk/provider": "1.1.3", "nanoid": "^3.3.8", "secure-json-parse": "^2.7.0" }, "peerDependencies": { "zod": "^3.23.8" } }, "sha512-fqhG+4sCVv8x7nFzYnFo19ryhAa3w096Kmc3hWxMQfW/TubPOmt3A6tYZhl4mUfQWWQMsuSkLrtjlWuXBVSGQA=="],
+
+    "@friendliai/ai-provider": ["@friendliai/ai-provider@1.1.4", "", { "dependencies": { "@ai-sdk/openai-compatible": "2.0.30", "@ai-sdk/provider": "3.0.8", "@ai-sdk/provider-utils": "4.0.15" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.12" } }, "sha512-9TU4B1QFqPhbkONjI5afCF7Ox4jOqtGg1xw8mA9QHZdtlEbZxU+mBNvMPlI5pU5kPoN6s7wkXmFmxpID+own1A=="],
+
+    "@opentelemetry/api": ["@opentelemetry/api@1.9.0", "", {}, "sha512-3giAOQvZiH5F9bMlMiv8+GSPMeqg0dbaeo58/0SlA9sxSqZhnUtxzX9/2FzyhS9sWQf5S0GJE0AKBrFqjpeYcg=="],
+
+    "@standard-schema/spec": ["@standard-schema/spec@1.1.0", "", {}, "sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w=="],
+
+    "@vercel/oidc": ["@vercel/oidc@3.1.0", "", {}, "sha512-Fw28YZpRnA3cAHHDlkt7xQHiJ0fcL+NRcIqsocZQUSmbzeIKRpwttJjik5ZGanXP+vlA4SbTg+AbA3bP363l+w=="],
+
+    "ai": ["ai@6.0.101", "", { "dependencies": { "@ai-sdk/gateway": "3.0.55", "@ai-sdk/provider": "3.0.8", "@ai-sdk/provider-utils": "4.0.15", "@opentelemetry/api": "1.9.0" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-Ur/NgbgOp1rdhyDiKDk6EOpSgd1g5ADlbcD1cjQJtQsnmhEngz3Rf8nK5JetDh0vnbLy2aEBpaQeL+zvLRWuaA=="],
+
+    "eventsource-parser": ["eventsource-parser@3.0.6", "", {}, "sha512-Vo1ab+QXPzZ4tCa8SwIHJFaSzy4R6SHf7BY79rFBDf0idraZWAkYrDjDj8uWaSm3S2TK+hJ7/t1CEmZ7jXw+pg=="],
+
+    "json-schema": ["json-schema@0.4.0", "", {}, "sha512-es94M3nTIfsEPisRafak+HDLfHXnKBhV3vU5eqPcS3flIWqcxJWgXHXiey3YrpaNsanY5ei1VoYEbOzijuq9BA=="],
+
+    "nanoid": ["nanoid@3.3.11", "", { "bin": { "nanoid": "bin/nanoid.cjs" } }, "sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w=="],
+
+    "secure-json-parse": ["secure-json-parse@2.7.0", "", {}, "sha512-6aU+Rwsezw7VR8/nyvKTx8QpWH9FrcYiXXlqC4z5d5XQBDRqtbfsRjnwGyqbi3gddNtWHuEk9OANUotL26qKUw=="],
+
+    "zod": ["zod@4.3.6", "", {}, "sha512-rftlrkhHZOcjDwkGlnUtZZkvaPHCsDATp4pGpuOOMDaTdDDXF91wuVDJoWoPsKX/3YPQ5fHuF3STjcYyKr+Qhg=="],
+
+    "@ai-sdk/gateway/@ai-sdk/provider": ["@ai-sdk/provider@3.0.8", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-oGMAgGoQdBXbZqNG0Ze56CHjDZ1IDYOwGYxYjO5KLSlz5HiNQ9udIXsPZ61VWaHGZ5XW/jyjmr6t2xz2jGVwbQ=="],
+
+    "@ai-sdk/gateway/@ai-sdk/provider-utils": ["@ai-sdk/provider-utils@4.0.15", "", { "dependencies": { "@ai-sdk/provider": "3.0.8", "@standard-schema/spec": "^1.1.0", "eventsource-parser": "^3.0.6" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-8XiKWbemmCbvNN0CLR9u3PQiet4gtEVIrX4zzLxnCj06AwsEDJwJVBbKrEI4t6qE8XRSIvU2irka0dcpziKW6w=="],
+
+    "@ai-sdk/openai-compatible/@ai-sdk/provider": ["@ai-sdk/provider@3.0.8", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-oGMAgGoQdBXbZqNG0Ze56CHjDZ1IDYOwGYxYjO5KLSlz5HiNQ9udIXsPZ61VWaHGZ5XW/jyjmr6t2xz2jGVwbQ=="],
+
+    "@ai-sdk/openai-compatible/@ai-sdk/provider-utils": ["@ai-sdk/provider-utils@4.0.15", "", { "dependencies": { "@ai-sdk/provider": "3.0.8", "@standard-schema/spec": "^1.1.0", "eventsource-parser": "^3.0.6" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-8XiKWbemmCbvNN0CLR9u3PQiet4gtEVIrX4zzLxnCj06AwsEDJwJVBbKrEI4t6qE8XRSIvU2irka0dcpziKW6w=="],
+
+    "@friendliai/ai-provider/@ai-sdk/provider": ["@ai-sdk/provider@3.0.8", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-oGMAgGoQdBXbZqNG0Ze56CHjDZ1IDYOwGYxYjO5KLSlz5HiNQ9udIXsPZ61VWaHGZ5XW/jyjmr6t2xz2jGVwbQ=="],
+
+    "@friendliai/ai-provider/@ai-sdk/provider-utils": ["@ai-sdk/provider-utils@4.0.15", "", { "dependencies": { "@ai-sdk/provider": "3.0.8", "@standard-schema/spec": "^1.1.0", "eventsource-parser": "^3.0.6" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-8XiKWbemmCbvNN0CLR9u3PQiet4gtEVIrX4zzLxnCj06AwsEDJwJVBbKrEI4t6qE8XRSIvU2irka0dcpziKW6w=="],
+
+    "ai/@ai-sdk/provider": ["@ai-sdk/provider@3.0.8", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-oGMAgGoQdBXbZqNG0Ze56CHjDZ1IDYOwGYxYjO5KLSlz5HiNQ9udIXsPZ61VWaHGZ5XW/jyjmr6t2xz2jGVwbQ=="],
+
+    "ai/@ai-sdk/provider-utils": ["@ai-sdk/provider-utils@4.0.15", "", { "dependencies": { "@ai-sdk/provider": "3.0.8", "@standard-schema/spec": "^1.1.0", "eventsource-parser": "^3.0.6" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-8XiKWbemmCbvNN0CLR9u3PQiet4gtEVIrX4zzLxnCj06AwsEDJwJVBbKrEI4t6qE8XRSIvU2irka0dcpziKW6w=="],
+  }
+}

benchmarks/headless.ts

@@ -0,0 +1,193 @@
+#!/usr/bin/env bun
+import { readFile, writeFile, mkdir } from "node:fs/promises"
+import { join, dirname } from "node:path"
+import { stepCountIs, streamText, type CoreMessage } from "ai"
+import { tool } from "ai"
+import { createFriendli } from "@friendliai/ai-provider"
+import { z } from "zod"
+import { formatHashLines } from "../src/tools/hashline-edit/hash-computation"
+import { normalizeHashlineEdits } from "../src/tools/hashline-edit/normalize-edits"
+import { applyHashlineEditsWithReport } from "../src/tools/hashline-edit/edit-operations"
+import { canonicalizeFileText, restoreFileText } from "../src/tools/hashline-edit/file-text-canonicalization"
+
+const DEFAULT_MODEL = "MiniMaxAI/MiniMax-M2.5"
+const MAX_STEPS = 50
+const sessionId = `bench-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
+
+const emit = (event: Record<string, unknown>) =>
+  console.log(JSON.stringify({ sessionId, timestamp: new Date().toISOString(), ...event }))
+
+// ── CLI ──────────────────────────────────────────────────────
+function parseArgs(): { prompt: string; modelId: string } {
+  const args = process.argv.slice(2)
+  let prompt = ""
+  let modelId = DEFAULT_MODEL
+  for (let i = 0; i < args.length; i++) {
+    if ((args[i] === "-p" || args[i] === "--prompt") && args[i + 1]) {
+      prompt = args[++i]
+    } else if ((args[i] === "-m" || args[i] === "--model") && args[i + 1]) {
+      modelId = args[++i]
+    } else if (args[i] === "--reasoning-mode" && args[i + 1]) {
+      i++ // consume
+    }
+    // --no-translate, --think consumed silently
+  }
+  if (!prompt) {
+    console.error("Usage: bun run benchmarks/headless.ts -p <prompt> [-m <model>]")
+    process.exit(1)
+  }
+  return { prompt, modelId }
+}
+
+// ── Tools ────────────────────────────────────────────────────
+const readFileTool = tool({
+  description: "Read a file with hashline-tagged content (LINE#ID format)",
+  inputSchema: z.object({ path: z.string().describe("File path") }),
+  execute: async ({ path }) => {
+    const fullPath = join(process.cwd(), path)
+    try {
+      const content = await readFile(fullPath, "utf-8")
+      const lines = content.split("\n")
+      const tagged = formatHashLines(content)
+      return `OK - read file\npath: ${path}\nlines: ${lines.length}\n\n${tagged}`
+    } catch {
+      return `Error: File not found: ${path}`
+    }
+  },
+})
+
+const editFileTool = tool({
+  description: "Edit a file using hashline anchors (LINE#ID format)",
+  inputSchema: z.object({
+    path: z.string(),
+    edits: z.array(
+      z.object({
+        op: z.enum(["replace", "append", "prepend"]),
+        pos: z.string().optional(),
+        end: z.string().optional(),
+        lines: z.union([z.array(z.string()), z.string(), z.null()]),
+      })
+    ).min(1),
+  }),
+  execute: async ({ path, edits }) => {
+    const fullPath = join(process.cwd(), path)
+    try {
+      let rawContent = ""
+      let exists = true
+      try {
+        rawContent = await readFile(fullPath, "utf-8")
+      } catch {
+        exists = false
+      }
+
+      const normalized = normalizeHashlineEdits(edits)
+
+      if (!exists) {
+        const canCreate = normalized.every(
+          (e) => (e.op === "append" || e.op === "prepend") && !e.pos
+        )
+        if (!canCreate) return `Error: File not found: ${path}`
+      }
+
+      const envelope = canonicalizeFileText(rawContent)
+      const result = applyHashlineEditsWithReport(envelope.content, normalized)
+
+      if (result.content === envelope.content) {
+        return `Error: No changes made to ${path}. The edits produced identical content.`
+      }
+
+      const writeContent = restoreFileText(result.content, envelope)
+      await mkdir(dirname(fullPath), { recursive: true })
+      await writeFile(fullPath, writeContent, "utf-8")
+
+      const oldLineCount = rawContent.split("\n").length
+      const newLineCount = writeContent.split("\n").length
+      const delta = newLineCount - oldLineCount
+      const sign = delta > 0 ? "+" : ""
+      const action = exists ? "Updated" : "Created"
+      return `${action} ${path}\n${edits.length} edit(s) applied, ${sign}${delta} line(s)`
+    } catch (error) {
+      return `Error: ${error instanceof Error ? error.message : String(error)}`
+    }
+  },
+})
+
+// ── Agent Loop ───────────────────────────────────────────────
+async function run() {
+  const { prompt, modelId } = parseArgs()
+
+  const friendli = createFriendli({ apiKey: process.env.FRIENDLI_TOKEN! })
+  const model = friendli(modelId)
+  const tools = { read_file: readFileTool, edit_file: editFileTool }
+
+  emit({ type: "user", content: prompt })
+
+  const messages: CoreMessage[] = [{ role: "user", content: prompt }]
+  const system =
+    "You are a code editing assistant. Use read_file to read files and edit_file to edit them. " +
+    "Always read a file before editing it to get fresh LINE#ID anchors."
+
+  for (let step = 0; step < MAX_STEPS; step++) {
+    const stream = streamText({
+      model,
+      tools,
+      messages,
+      system,
+      stopWhen: stepCountIs(1),
+    })
+
+    let currentText = ""
+    for await (const part of stream.fullStream) {
+      switch (part.type) {
+        case "text-delta":
+          currentText += part.text
+          break
+        case "tool-call":
+          emit({
+            type: "tool_call",
+            tool_call_id: part.toolCallId,
+            tool_name: part.toolName,
+            tool_input: part.args,
+            model: modelId,
+          })
+          break
+        case "tool-result": {
+          const output = typeof part.result === "string" ? part.result : JSON.stringify(part.result)
+          const isError = typeof output === "string" && output.startsWith("Error:")
+          emit({
+            type: "tool_result",
+            tool_call_id: part.toolCallId,
+            output,
+            ...(isError ? { error: output } : {}),
+          })
+          break
+      }
+    }
+
+    const response = await stream.response
+    messages.push(...response.messages)
+
+    const finishReason = await stream.finishReason
+    if (finishReason !== "tool-calls") {
+      if (currentText.trim()) {
+        emit({ type: "assistant", content: currentText, model: modelId })
+      }
+      break
+    }
+  }
+}
+
+// ── Signal + Startup ─────────────────────────────────────────
+process.once("SIGINT", () => process.exit(0))
+process.once("SIGTERM", () => process.exit(143))
+
+const startTime = Date.now()
+run()
+  .catch((error) => {
+    emit({ type: "error", error: error instanceof Error ? error.message : String(error) })
+    process.exit(1)
+  })
+  .then(() => {
+    const elapsed = ((Date.now() - startTime) / 1000).toFixed(2)
+    console.error(`[headless] Completed in ${elapsed}s`)
+  })

benchmarks/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "hashline-edit-benchmark",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "description": "Hashline edit tool benchmark using Vercel AI SDK with FriendliAI provider",
+  "scripts": {
+    "bench:basic": "bun run test-edit-ops.ts",
+    "bench:edge": "bun run test-edge-cases.ts",
+    "bench:multi": "bun run test-multi-model.ts",
+    "bench:all": "bun run bench:basic && bun run bench:edge"
+  },
+  "dependencies": {
+    "ai": "^6.0.94",
+    "@ai-sdk/openai": "^1.3.0",
+    "@friendliai/ai-provider": "^1.0.9",
+    "zod": "^4.1.0"
+  }
+}

benchmarks/test-edit-ops.ts

@@ -0,0 +1,808 @@
+#!/usr/bin/env bun
+/**
+ * Comprehensive headless edit_file stress test: 21 operation types
+ *
+ * Tests: 5 basic ops + 10 creative cases + 6 whitespace cases
+ * Each runs via headless mode with its own demo file + prompt.
+ *
+ * Usage:
+ *   bun run scripts/test-headless-edit-ops.ts [-m <model>] [--provider <provider>]
+ */
+
+import { spawn } from "node:child_process";
+import { mkdirSync, readFileSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join, resolve } from "node:path";
+
+// ── CLI arg passthrough ───────────────────────────────────────
+const extraArgs: string[] = [];
+const rawArgs = process.argv.slice(2);
+for (let i = 0; i < rawArgs.length; i++) {
+  const arg = rawArgs[i];
+  if (
+    (arg === "-m" || arg === "--model" || arg === "--provider") &&
+    i + 1 < rawArgs.length
+  ) {
+    extraArgs.push(arg, rawArgs[i + 1]);
+    i++;
+  } else if (arg === "--think" || arg === "--no-translate") {
+    extraArgs.push(arg);
+  } else if (arg === "--reasoning-mode" && i + 1 < rawArgs.length) {
+    extraArgs.push(arg, rawArgs[i + 1]);
+    i++;
+  }
+}
+
+// ── Colors ────────────────────────────────────────────────────
+const BOLD = "\x1b[1m";
+const GREEN = "\x1b[32m";
+const RED = "\x1b[31m";
+const YELLOW = "\x1b[33m";
+const DIM = "\x1b[2m";
+const CYAN = "\x1b[36m";
+const RESET = "\x1b[0m";
+
+const pass = (msg: string) => console.log(`  ${GREEN}✓${RESET} ${msg}`);
+const fail = (msg: string) => console.log(`  ${RED}✗${RESET} ${msg}`);
+const info = (msg: string) => console.log(`  ${DIM}${msg}${RESET}`);
+const warn = (msg: string) => console.log(`  ${YELLOW}⚠${RESET} ${msg}`);
+
+// ── Test case definition ─────────────────────────────────────
+interface TestCase {
+  fileContent: string;
+  fileName: string;
+  name: string;
+  prompt: string;
+  validate: (content: string) => { passed: boolean; reason: string };
+}
+
+const TEST_CASES: TestCase[] = [
+  {
+    name: "1. Replace single line",
+    fileName: "config.txt",
+    fileContent: [
+      "host: localhost",
+      "port: 3000",
+      "debug: false",
+      "timeout: 30",
+      "retries: 3",
+    ].join("\n"),
+    prompt: [
+      "Follow these steps exactly:",
+      "Step 1: Call read_file on config.txt.",
+      "Step 2: Note the anchor for the port line (line 2).",
+      "Step 3: Call edit_file with path='config.txt' and edits containing ONE object:",
+      "  { op: 'replace', pos: '<line2 anchor>', lines: ['port: 8080'] }",
+      "IMPORTANT: pos must be ONLY the anchor (like '2#KB'). lines must be a SEPARATE array field with the new content.",
+    ].join(" "),
+    validate: (content) => {
+      const has8080 = content.includes("port: 8080");
+      const has3000 = content.includes("port: 3000");
+      if (has8080 && !has3000) {
+        return { passed: true, reason: "port changed to 8080" };
+      }
+      if (has3000) {
+        return { passed: false, reason: "port still 3000 — edit not applied" };
+      }
+      return {
+        passed: false,
+        reason: `unexpected content: ${content.slice(0, 100)}`,
+      };
+    },
+  },
+  {
+    name: "2. Append after line",
+    fileName: "fruits.txt",
+    fileContent: ["apple", "banana", "cherry"].join("\n"),
+    prompt:
+      "Read fruits.txt with read_file. Then use edit_file with op='append' to insert a new line 'grape' after the 'banana' line. Use pos='LINE#HASH' of the banana line and lines=['grape'].",
+    validate: (content) => {
+      const lines = content.trim().split("\n");
+      const bananaIdx = lines.findIndex((l) => l.trim() === "banana");
+      const grapeIdx = lines.findIndex((l) => l.trim() === "grape");
+      if (grapeIdx === -1) {
+        return { passed: false, reason: '"grape" not found in file' };
+      }
+      if (bananaIdx === -1) {
+        return { passed: false, reason: '"banana" was removed' };
+      }
+      if (grapeIdx !== bananaIdx + 1) {
+        return {
+          passed: false,
+          reason: `"grape" at line ${grapeIdx + 1} but expected after "banana" at line ${bananaIdx + 1}`,
+        };
+      }
+      if (lines.length !== 4) {
+        return {
+          passed: false,
+          reason: `expected 4 lines, got ${lines.length}`,
+        };
+      }
+      return {
+        passed: true,
+        reason: '"grape" correctly appended after "banana"',
+      };
+    },
+  },
+  {
+    name: "3. Prepend before line",
+    fileName: "code.txt",
+    fileContent: ["function greet() {", '  return "hello";', "}"].join("\n"),
+    prompt:
+      "Read code.txt with read_file. Then use edit_file with op='prepend' to add '// Greeting function' before the function line. Use pos='LINE#HASH' of the function line and lines=['// Greeting function'].",
+    validate: (content) => {
+      const lines = content.trim().split("\n");
+      const commentIdx = lines.findIndex(
+        (l) => l.trim().startsWith("//") && l.toLowerCase().includes("greet")
+      );
+      const funcIdx = lines.findIndex((l) =>
+        l.trim().startsWith("function greet")
+      );
+      if (commentIdx === -1) {
+        return { passed: false, reason: "comment line not found" };
+      }
+      if (funcIdx === -1) {
+        return { passed: false, reason: '"function greet" line was removed' };
+      }
+      if (commentIdx !== funcIdx - 1) {
+        return {
+          passed: false,
+          reason: `comment at line ${commentIdx + 1} but function at ${funcIdx + 1} — not directly before`,
+        };
+      }
+      return {
+        passed: true,
+        reason: "comment correctly prepended before function",
+      };
+    },
+  },
+  {
+    name: "4. Range replace (multi-line → single line)",
+    fileName: "log.txt",
+    fileContent: [
+      "=== Log Start ===",
+      "INFO: started",
+      "WARN: slow query",
+      "ERROR: timeout",
+      "INFO: recovered",
+      "=== Log End ===",
+    ].join("\n"),
+    prompt: [
+      "Follow these steps exactly:",
+      "Step 1: Call read_file on log.txt to see line anchors.",
+      "Step 2: Note the anchor for 'WARN: slow query' (line 3) and 'ERROR: timeout' (line 4).",
+      "Step 3: Call edit_file with path='log.txt' and edits containing ONE object with THREE separate JSON fields:",
+      "  { op: 'replace', pos: '<line3 anchor>', end: '<line4 anchor>', lines: ['RESOLVED: issues cleared'] }",
+      "CRITICAL: pos, end, and lines are THREE SEPARATE JSON fields. pos is ONLY '3#XX'. end is ONLY '4#YY'. lines is ['RESOLVED: issues cleared'].",
+      "If edit_file fails or errors, use write_file to write the complete correct file content instead.",
+      "The correct final content should be: === Log Start ===, INFO: started, RESOLVED: issues cleared, INFO: recovered, === Log End ===",
+      "Do not make any other changes.",
+    ].join(" "),
+    validate: (content) => {
+      const lines = content.trim().split("\n");
+      const hasResolved = lines.some(
+        (l) => l.trim() === "RESOLVED: issues cleared"
+      );
+      const hasWarn = content.includes("WARN: slow query");
+      const hasError = content.includes("ERROR: timeout");
+      if (!hasResolved) {
+        return {
+          passed: false,
+          reason: '"RESOLVED: issues cleared" not found',
+        };
+      }
+      if (hasWarn || hasError) {
+        return { passed: false, reason: "old WARN/ERROR lines still present" };
+      }
+      // Core assertion: 2 old lines removed, 1 new line added = net -1 line
+      // Allow slight overshoot from model adding extra content
+      if (lines.length < 4 || lines.length > 6) {
+        return {
+          passed: false,
+          reason: `expected ~5 lines, got ${lines.length}`,
+        };
+      }
+      return {
+        passed: true,
+        reason: "range replace succeeded — 2 lines → 1 line",
+      };
+    },
+  },
+  {
+    name: "5. Delete line",
+    fileName: "settings.txt",
+    fileContent: [
+      "mode: production",
+      "debug: true",
+      "cache: enabled",
+      "log_level: info",
+    ].join("\n"),
+    prompt: [
+      "Follow these steps exactly:",
+      "Step 1: Call read_file on settings.txt to see line anchors.",
+      "Step 2: Note the anchor for 'debug: true' (line 2).",
+      "Step 3: Call edit_file with path='settings.txt' and edits containing ONE object:",
+      "  { op: 'replace', pos: '<line2 anchor>', lines: [] }",
+      "IMPORTANT: lines must be an empty array [] to delete the line. pos must be ONLY the anchor like '2#SR'.",
+    ].join(" "),
+    validate: (content) => {
+      const lines = content.trim().split("\n");
+      const hasDebug = content.includes("debug: true");
+      if (hasDebug) {
+        return { passed: false, reason: '"debug: true" still present' };
+      }
+      if (lines.length !== 3) {
+        return {
+          passed: false,
+          reason: `expected 3 lines, got ${lines.length}`,
+        };
+      }
+      if (
+        !(
+          content.includes("mode: production") &&
+          content.includes("cache: enabled")
+        )
+      ) {
+        return { passed: false, reason: "other lines were removed" };
+      }
+      return { passed: true, reason: '"debug: true" successfully deleted' };
+    },
+  },
+
+  // ── Creative cases (6-15) ────────────────────────────────────
+  {
+    name: "6. Batch edit — two replacements in one call",
+    fileName: "batch.txt",
+    fileContent: ["red", "green", "blue", "yellow"].join("\n"),
+    prompt: [
+      "Read batch.txt with read_file.",
+      "Then call edit_file ONCE with path='batch.txt' and edits containing TWO objects:",
+      "  1) { op: 'replace', pos: '<line1 anchor>', lines: ['crimson'] }",
+      "  2) { op: 'replace', pos: '<line3 anchor>', lines: ['navy'] }",
+      "Both edits must be in the SAME edits array in a single edit_file call.",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.trim().split("\n");
+      if (!c.includes("crimson")) return { passed: false, reason: "'crimson' not found" };
+      if (!c.includes("navy")) return { passed: false, reason: "'navy' not found" };
+      if (c.includes("red")) return { passed: false, reason: "'red' still present" };
+      if (c.includes("blue")) return { passed: false, reason: "'blue' still present" };
+      if (lines.length !== 4) return { passed: false, reason: `expected 4 lines, got ${lines.length}` };
+      return { passed: true, reason: "both lines replaced in single call" };
+    },
+  },
+  {
+    name: "7. Line expansion — 1 line → 3 lines",
+    fileName: "expand.txt",
+    fileContent: ["header", "TODO: implement", "footer"].join("\n"),
+    prompt: [
+      "Read expand.txt with read_file.",
+      "Replace the 'TODO: implement' line (line 2) with THREE lines:",
+      "  'step 1: init', 'step 2: process', 'step 3: cleanup'",
+      "Use edit_file with op='replace', pos=<line2 anchor>, lines=['step 1: init', 'step 2: process', 'step 3: cleanup'].",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.trim().split("\n");
+      if (c.includes("TODO")) return { passed: false, reason: "TODO line still present" };
+      if (!c.includes("step 1: init")) return { passed: false, reason: "'step 1: init' not found" };
+      if (!c.includes("step 3: cleanup")) return { passed: false, reason: "'step 3: cleanup' not found" };
+      if (lines.length !== 5) return { passed: false, reason: `expected 5 lines, got ${lines.length}` };
+      return { passed: true, reason: "1 line expanded to 3 lines" };
+    },
+  },
+  {
+    name: "8. Append at EOF",
+    fileName: "eof.txt",
+    fileContent: ["line one", "line two"].join("\n"),
+    prompt: [
+      "Read eof.txt with read_file.",
+      "Use edit_file to append 'line three' after the LAST line of the file.",
+      "Use op='append', pos=<last line anchor>, lines=['line three'].",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.trim().split("\n");
+      if (!c.includes("line three")) return { passed: false, reason: "'line three' not found" };
+      if (lines[lines.length - 1].trim() !== "line three")
+        return { passed: false, reason: "'line three' not at end" };
+      if (lines.length !== 3) return { passed: false, reason: `expected 3 lines, got ${lines.length}` };
+      return { passed: true, reason: "appended at EOF" };
+    },
+  },
+  {
+    name: "9. Special characters in content",
+    fileName: "special.json",
+    fileContent: [
+      '{',
+      '  "name": "old-value",',
+      '  "count": 42',
+      '}',
+    ].join("\n"),
+    prompt: [
+      "Read special.json with read_file.",
+      'Replace the line containing \"name\": \"old-value\" with \"name\": \"new-value\".',
+      "Use edit_file with op='replace', pos=<that line's anchor>, lines=['  \"name\": \"new-value\",'].",
+    ].join(" "),
+    validate: (c) => {
+      if (c.includes("old-value")) return { passed: false, reason: "'old-value' still present" };
+      if (!c.includes('"new-value"')) return { passed: false, reason: "'new-value' not found" };
+      if (!c.includes('"count": 42')) return { passed: false, reason: "other content was modified" };
+      return { passed: true, reason: "JSON value replaced with special chars intact" };
+    },
+  },
+  {
+    name: "10. Replace first line",
+    fileName: "first.txt",
+    fileContent: ["OLD HEADER", "body content", "footer"].join("\n"),
+    prompt: [
+      "Read first.txt with read_file.",
+      "Replace the very first line 'OLD HEADER' with 'NEW HEADER'.",
+      "Use edit_file with op='replace', pos=<line1 anchor>, lines=['NEW HEADER'].",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.trim().split("\n");
+      if (c.includes("OLD HEADER")) return { passed: false, reason: "'OLD HEADER' still present" };
+      if (lines[0].trim() !== "NEW HEADER") return { passed: false, reason: "first line is not 'NEW HEADER'" };
+      if (!c.includes("body content")) return { passed: false, reason: "body was modified" };
+      return { passed: true, reason: "first line replaced" };
+    },
+  },
+  {
+    name: "11. Replace last line",
+    fileName: "last.txt",
+    fileContent: ["alpha", "bravo", "OLD_FOOTER"].join("\n"),
+    prompt: [
+      "Read last.txt with read_file.",
+      "Replace the last line 'OLD_FOOTER' with 'NEW_FOOTER'.",
+      "Use edit_file with op='replace', pos=<last line anchor>, lines=['NEW_FOOTER'].",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.trim().split("\n");
+      if (c.includes("OLD_FOOTER")) return { passed: false, reason: "'OLD_FOOTER' still present" };
+      if (lines[lines.length - 1].trim() !== "NEW_FOOTER")
+        return { passed: false, reason: "last line is not 'NEW_FOOTER'" };
+      return { passed: true, reason: "last line replaced" };
+    },
+  },
+  {
+    name: "12. Adjacent line edits",
+    fileName: "adjacent.txt",
+    fileContent: ["aaa", "bbb", "ccc", "ddd"].join("\n"),
+    prompt: [
+      "Read adjacent.txt with read_file.",
+      "Replace line 2 ('bbb') with 'BBB' and line 3 ('ccc') with 'CCC'.",
+      "Use edit_file with TWO edits in the same call:",
+      "  { op: 'replace', pos: <line2 anchor>, lines: ['BBB'] }",
+      "  { op: 'replace', pos: <line3 anchor>, lines: ['CCC'] }",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.trim().split("\n");
+      if (c.includes("bbb")) return { passed: false, reason: "'bbb' still present" };
+      if (c.includes("ccc")) return { passed: false, reason: "'ccc' still present" };
+      if (!c.includes("BBB")) return { passed: false, reason: "'BBB' not found" };
+      if (!c.includes("CCC")) return { passed: false, reason: "'CCC' not found" };
+      if (lines.length !== 4) return { passed: false, reason: `expected 4 lines, got ${lines.length}` };
+      return { passed: true, reason: "two adjacent lines replaced" };
+    },
+  },
+  {
+    name: "13. Prepend multi-line block",
+    fileName: "block.py",
+    fileContent: ["def main():", "    print('hello')", "", "main()"].join("\n"),
+    prompt: [
+      "Read block.py with read_file.",
+      "Prepend a 2-line comment block before 'def main():' (line 1).",
+      "The two lines are: '# Author: test' and '# Date: 2025-01-01'.",
+      "Use edit_file with op='prepend', pos=<line1 anchor>, lines=['# Author: test', '# Date: 2025-01-01'].",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.trim().split("\n");
+      if (!c.includes("# Author: test")) return { passed: false, reason: "author comment not found" };
+      if (!c.includes("# Date: 2025-01-01")) return { passed: false, reason: "date comment not found" };
+      const defIdx = lines.findIndex((l) => l.startsWith("def main"));
+      const authorIdx = lines.findIndex((l) => l.includes("Author"));
+      if (authorIdx >= defIdx) return { passed: false, reason: "comments not before def" };
+      return { passed: true, reason: "2-line block prepended before function" };
+    },
+  },
+  {
+    name: "14. Delete range — 3 consecutive lines",
+    fileName: "cleanup.txt",
+    fileContent: ["keep1", "remove-a", "remove-b", "remove-c", "keep2"].join("\n"),
+    prompt: [
+      "Read cleanup.txt with read_file.",
+      "Delete lines 2-4 ('remove-a', 'remove-b', 'remove-c') using a single range replace.",
+      "Use edit_file with op='replace', pos=<line2 anchor>, end=<line4 anchor>, lines=[].",
+      "An empty lines array deletes the range.",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.trim().split("\n");
+      if (c.includes("remove")) return { passed: false, reason: "'remove' lines still present" };
+      if (!c.includes("keep1")) return { passed: false, reason: "'keep1' was deleted" };
+      if (!c.includes("keep2")) return { passed: false, reason: "'keep2' was deleted" };
+      if (lines.length !== 2) return { passed: false, reason: `expected 2 lines, got ${lines.length}` };
+      return { passed: true, reason: "3 consecutive lines deleted via range" };
+    },
+  },
+  {
+    name: "15. Replace with duplicate-content line",
+    fileName: "dupes.txt",
+    fileContent: ["item", "item", "item", "item"].join("\n"),
+    prompt: [
+      "Read dupes.txt with read_file. All 4 lines have the same text 'item'.",
+      "Replace ONLY line 3 with 'CHANGED'. Do NOT modify any other line.",
+      "Use edit_file with op='replace', pos=<line3 anchor>, lines=['CHANGED'].",
+      "The anchor hash uniquely identifies line 3 even though the content is identical.",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.trim().split("\n");
+      if (!c.includes("CHANGED")) return { passed: false, reason: "'CHANGED' not found" };
+      const changedCount = lines.filter((l) => l.trim() === "CHANGED").length;
+      const itemCount = lines.filter((l) => l.trim() === "item").length;
+      if (changedCount !== 1) return { passed: false, reason: `expected 1 CHANGED, got ${changedCount}` };
+      if (itemCount !== 3) return { passed: false, reason: `expected 3 item lines, got ${itemCount}` };
+      if (lines.length !== 4) return { passed: false, reason: `expected 4 lines, got ${lines.length}` };
+      return { passed: true, reason: "only line 3 changed among duplicates" };
+    },
+  },
+
+  // ── Whitespace cases (16-21) ──────────────────────────────────
+  {
+    name: "16. Fix indentation — 2 spaces → 4 spaces",
+    fileName: "indent.js",
+    fileContent: ["function foo() {", "  const x = 1;", "  return x;", "}"].join("\n"),
+    prompt: [
+      "Read indent.js with read_file.",
+      "Replace line 2 '  const x = 1;' (2-space indent) with '    const x = 1;' (4-space indent).",
+      "Use edit_file with op='replace', pos=<line2 anchor>, lines=['    const x = 1;'].",
+      "The ONLY change is the indentation: 2 spaces → 4 spaces. Content stays the same.",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.split("\n");
+      const line2 = lines[1];
+      if (!line2) return { passed: false, reason: "line 2 missing" };
+      if (line2 === "    const x = 1;") return { passed: true, reason: "indentation fixed to 4 spaces" };
+      if (line2 === "  const x = 1;") return { passed: false, reason: "still 2-space indent" };
+      return { passed: false, reason: `unexpected line 2: '${line2}'` };
+    },
+  },
+  {
+    name: "17. Replace preserving leading whitespace",
+    fileName: "preserve.py",
+    fileContent: [
+      "class Foo:",
+      "    def old_method(self):",
+      "        pass",
+    ].join("\n"),
+    prompt: [
+      "Read preserve.py with read_file.",
+      "Replace line 2 '    def old_method(self):' with '    def new_method(self):'.",
+      "Keep the 4-space indentation. Only change the method name.",
+      "Use edit_file with op='replace', pos=<line2 anchor>, lines=['    def new_method(self):'].",
+    ].join(" "),
+    validate: (c) => {
+      if (c.includes("old_method")) return { passed: false, reason: "'old_method' still present" };
+      const lines = c.split("\n");
+      const methodLine = lines.find((l) => l.includes("new_method"));
+      if (!methodLine) return { passed: false, reason: "'new_method' not found" };
+      if (!methodLine.startsWith("    ")) return { passed: false, reason: "indentation lost" };
+      return { passed: true, reason: "method renamed with indentation preserved" };
+    },
+  },
+  {
+    name: "18. Insert blank line between sections",
+    fileName: "sections.txt",
+    fileContent: ["[section-a]", "value-a=1", "[section-b]", "value-b=2"].join("\n"),
+    prompt: [
+      "Read sections.txt with read_file.",
+      "Insert a blank empty line between 'value-a=1' (line 2) and '[section-b]' (line 3).",
+      "Use edit_file with op='append', pos=<line2 anchor>, lines=[''].",
+      "lines=[''] inserts one empty line.",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.split("\n");
+      const valAIdx = lines.findIndex((l) => l.includes("value-a=1"));
+      const secBIdx = lines.findIndex((l) => l.includes("[section-b]"));
+      if (valAIdx === -1) return { passed: false, reason: "'value-a=1' missing" };
+      if (secBIdx === -1) return { passed: false, reason: "'[section-b]' missing" };
+      if (secBIdx - valAIdx < 2) return { passed: false, reason: "no blank line between sections" };
+      const between = lines[valAIdx + 1];
+      if (between.trim() !== "") return { passed: false, reason: `line between is '${between}', not blank` };
+      return { passed: true, reason: "blank line inserted between sections" };
+    },
+  },
+  {
+    name: "19. Delete blank line",
+    fileName: "noblank.txt",
+    fileContent: ["first", "", "second", "third"].join("\n"),
+    prompt: [
+      "Read noblank.txt with read_file.",
+      "Delete the empty blank line (line 2). Use edit_file with op='replace', pos=<line2 anchor>, lines=[].",
+    ].join(" "),
+    validate: (c) => {
+      const lines = c.trim().split("\n");
+      if (lines.length !== 3) return { passed: false, reason: `expected 3 lines, got ${lines.length}` };
+      if (lines[0].trim() !== "first") return { passed: false, reason: "'first' not on line 1" };
+      if (lines[1].trim() !== "second") return { passed: false, reason: "'second' not on line 2" };
+      return { passed: true, reason: "blank line deleted" };
+    },
+  },
+  {
+    name: "20. Tab → spaces conversion",
+    fileName: "tabs.txt",
+    fileContent: ["start", "\tindented-with-tab", "end"].join("\n"),
+    prompt: [
+      "Read tabs.txt with read_file.",
+      "Replace the tab-indented line 2 using edit_file with edits: [{ op: 'replace', pos: '<line2 anchor>', lines: ['    indented-with-spaces'] }].",
+      "Expected final line 2 to be 4 spaces followed by indented-with-spaces.",
+    ].join(" "),
+    validate: (c) => {
+      if (c.includes("\t")) return { passed: false, reason: "tab still present" };
+      if (!c.includes("    indented-with-spaces"))
+        return { passed: false, reason: "'    indented-with-spaces' not found" };
+      if (!c.includes("start")) return { passed: false, reason: "'start' was modified" };
+      return { passed: true, reason: "tab converted to 4 spaces" };
+    },
+  },
+  {
+    name: "21. Deeply nested indent replacement",
+    fileName: "nested.ts",
+    fileContent: [
+      "if (a) {",
+      "  if (b) {",
+      "    if (c) {",
+      "      old_call();",
+      "    }",
+      "  }",
+      "}",
+    ].join("\n"),
+    prompt: [
+      "Read nested.ts with read_file.",
+      "Replace line 4 '      old_call();' with '      new_call();'.",
+      "Preserve the exact 6-space indentation. Only change the function name.",
+      "Use edit_file with op='replace', pos=<line4 anchor>, lines=['      new_call();'].",
+    ].join(" "),
+    validate: (c) => {
+      if (c.includes("old_call")) return { passed: false, reason: "'old_call' still present" };
+      const lines = c.split("\n");
+      const callLine = lines.find((l) => l.includes("new_call"));
+      if (!callLine) return { passed: false, reason: "'new_call' not found" };
+      const leadingSpaces = callLine.match(/^ */)?.[0].length ?? 0;
+      if (leadingSpaces !== 6) return { passed: false, reason: `expected 6-space indent, got ${leadingSpaces}` };
+      return { passed: true, reason: "deeply nested line replaced with indent preserved" };
+    },
+  },
+];
+
+// ── JSONL event types ─────────────────────────────────────────
+interface ToolCallEvent {
+  tool_call_id: string;
+  tool_input: Record<string, unknown>;
+  tool_name: string;
+  type: "tool_call";
+}
+
+interface ToolResultEvent {
+  error?: string;
+  output: string;
+  tool_call_id: string;
+  type: "tool_result";
+}
+
+interface AnyEvent {
+  type: string;
+  [key: string]: unknown;
+}
+
+// ── Run single test case ─────────────────────────────────────
+async function runTestCase(
+  tc: TestCase,
+  testDir: string
+): Promise<{
+  passed: boolean;
+  editCalls: number;
+  editSuccesses: number;
+  duration: number;
+}> {
+  const testFile = join(testDir, tc.fileName);
+  writeFileSync(testFile, tc.fileContent, "utf-8");
+
+  const headlessScript = resolve(import.meta.dir, "headless.ts");
+  const headlessArgs = [
+    "run",
+    headlessScript,
+    "-p",
+    tc.prompt,
+    "--no-translate",
+    ...extraArgs,
+  ];
+
+  const startTime = Date.now();
+
+  const output = await new Promise<string>((res, reject) => {
+    const proc = spawn("bun", headlessArgs, {
+      cwd: testDir,
+      env: { ...process.env, BUN_INSTALL: process.env.BUN_INSTALL },
+      stdio: ["ignore", "pipe", "pipe"],
+    });
+
+    let stdout = "";
+    let stderr = "";
+
+    proc.stdout.on("data", (chunk: Buffer) => {
+      stdout += chunk.toString();
+    });
+    proc.stderr.on("data", (chunk: Buffer) => {
+      stderr += chunk.toString();
+    });
+
+    const timeout = setTimeout(
+      () => {
+        proc.kill("SIGTERM");
+        reject(new Error("Timed out after 4 minutes"));
+      },
+      4 * 60 * 1000
+    );
+
+    proc.on("close", (code) => {
+      clearTimeout(timeout);
+      if (code !== 0) {
+        reject(new Error(`Exit code ${code}\n${stderr.slice(-500)}`));
+      } else {
+        res(stdout);
+      }
+    });
+    proc.on("error", (err) => {
+      clearTimeout(timeout);
+      reject(err);
+    });
+  });
+
+  const duration = Date.now() - startTime;
+
+  // Parse events
+  const events: AnyEvent[] = [];
+  for (const line of output.split("\n").filter((l) => l.trim())) {
+    try {
+      events.push(JSON.parse(line) as AnyEvent);
+    } catch {
+      // skip non-JSON
+    }
+  }
+
+  const toolCalls = events.filter(
+    (e) => e.type === "tool_call"
+  ) as unknown as ToolCallEvent[];
+  const toolResults = events.filter(
+    (e) => e.type === "tool_result"
+  ) as unknown as ToolResultEvent[];
+
+  const editCalls = toolCalls.filter((e) => e.tool_name === "edit_file");
+  const editCallIds = new Set(editCalls.map((e) => e.tool_call_id));
+  const editResults = toolResults.filter((e) =>
+    editCallIds.has(e.tool_call_id)
+  );
+  const editSuccesses = editResults.filter((e) => !e.error);
+
+  // Show blocked calls
+  const editErrors = editResults.filter((e) => e.error);
+  for (const err of editErrors) {
+    const matchingCall = editCalls.find(
+      (c) => c.tool_call_id === err.tool_call_id
+    );
+    info(`  blocked: ${err.error?.slice(0, 120)}`);
+    if (matchingCall) {
+      info(`  input: ${JSON.stringify(matchingCall.tool_input).slice(0, 200)}`);
+    }
+  }
+
+  // Validate file content
+  let finalContent: string;
+  try {
+    finalContent = readFileSync(testFile, "utf-8");
+  } catch {
+    return {
+      passed: false,
+      editCalls: editCalls.length,
+      editSuccesses: editSuccesses.length,
+      duration,
+    };
+  }
+
+  const validation = tc.validate(finalContent);
+
+  return {
+    passed: validation.passed,
+    editCalls: editCalls.length,
+    editSuccesses: editSuccesses.length,
+    duration,
+  };
+}
+
+// ── Main ──────────────────────────────────────────────────────
+const main = async () => {
+  console.log(`\n${BOLD}Headless Edit Operations Test — ${TEST_CASES.length} Types${RESET}\n`);
+
+  const testDir = join(tmpdir(), `edit-ops-${Date.now()}`);
+  mkdirSync(testDir, { recursive: true });
+  info(`Test dir: ${testDir}`);
+  console.log();
+
+  let totalPassed = 0;
+  const results: { name: string; passed: boolean; detail: string }[] = [];
+
+  for (const tc of TEST_CASES) {
+    console.log(`${CYAN}${BOLD}${tc.name}${RESET}`);
+    info(`File: ${tc.fileName}`);
+    info(`Prompt: "${tc.prompt.slice(0, 80)}..."`);
+
+    try {
+      const result = await runTestCase(tc, testDir);
+      const status = result.passed
+        ? `${GREEN}PASS${RESET}`
+        : `${RED}FAIL${RESET}`;
+      const detail = `edit_file: ${result.editSuccesses}/${result.editCalls} succeeded, ${(result.duration / 1000).toFixed(1)}s`;
+
+      console.log(`  ${status} — ${detail}`);
+
+      if (result.passed) {
+        totalPassed++;
+        // Validate the file to show reason
+        const content = readFileSync(join(testDir, tc.fileName), "utf-8");
+        const v = tc.validate(content);
+        pass(v.reason);
+      } else {
+        const content = readFileSync(join(testDir, tc.fileName), "utf-8");
+        const v = tc.validate(content);
+        fail(v.reason);
+        info(
+          `Final content:\n${content
+            .split("\n")
+            .map((l, i) => `    ${i + 1}: ${l}`)
+            .join("\n")}`
+        );
+      }
+
+      results.push({ name: tc.name, passed: result.passed, detail });
+    } catch (error) {
+      const msg = error instanceof Error ? error.message : String(error);
+      console.log(`  ${RED}ERROR${RESET} — ${msg.slice(0, 200)}`);
+      fail(msg.slice(0, 200));
+      results.push({ name: tc.name, passed: false, detail: msg.slice(0, 100) });
+    }
+
+    // Reset file for next test (in case of side effects)
+    try {
+      rmSync(join(testDir, tc.fileName), { force: true });
+    } catch {}
+
+    console.log();
+  }
+
+  // Summary
+  console.log(`${BOLD}━━━ Summary ━━━${RESET}`);
+  for (const r of results) {
+    const icon = r.passed ? `${GREEN}✓${RESET}` : `${RED}✗${RESET}`;
+    console.log(`  ${icon} ${r.name} — ${r.detail}`);
+  }
+  console.log();
+  console.log(
+    `${BOLD}Result: ${totalPassed}/${TEST_CASES.length} passed (${Math.round((totalPassed / TEST_CASES.length) * 100)}%)${RESET}`
+  );
+
+  // Cleanup
+  try {
+    rmSync(testDir, { recursive: true, force: true });
+  } catch {}
+
+  if (totalPassed === TEST_CASES.length) {
+    console.log(
+      `\n${BOLD}${GREEN}🎉 ALL TESTS PASSED — 100% success rate!${RESET}\n`
+    );
+    process.exit(0);
+  } else {
+    console.log(`\n${BOLD}${RED}Some tests failed.${RESET}\n`);
+    process.exit(1);
+  }
+};
+
+main();

benchmarks/test-multi-model.ts

@@ -0,0 +1,280 @@
+#!/usr/bin/env bun
+/**
+ * Multi-model edit_file test runner
+ *
+ * Runs test-headless-edit-ops.ts against every available model
+ * and produces a summary table.
+ *
+ * Usage:
+ *   bun run scripts/test-multi-model-edit.ts [--timeout <seconds>]
+ */
+
+import { spawn } from "node:child_process";
+import { resolve } from "node:path";
+
+// ── Models ────────────────────────────────────────────────────
+const MODELS = [
+  { id: "MiniMaxAI/MiniMax-M2.5", short: "M2.5" },
+  // { id: "MiniMaxAI/MiniMax-M2.1", short: "M2.1" },  // masked: slow + timeout-prone
+  // { id: "zai-org/GLM-5", short: "GLM-5" },            // masked: API 503
+  { id: "zai-org/GLM-4.7", short: "GLM-4.7" },
+];
+
+// ── CLI args ──────────────────────────────────────────────────
+let perModelTimeoutSec = 900; // 15 min default per model (5 tests)
+const rawArgs = process.argv.slice(2);
+for (let i = 0; i < rawArgs.length; i++) {
+  if (rawArgs[i] === "--timeout" && i + 1 < rawArgs.length) {
+    const parsed = Number.parseInt(rawArgs[i + 1], 10);
+    if (Number.isNaN(parsed) || parsed <= 0) {
+      console.error(`Invalid --timeout value: ${rawArgs[i + 1]}`);
+      process.exit(1);
+    }
+    perModelTimeoutSec = parsed;
+    i++;
+}
+
+// ── Colors ────────────────────────────────────────────────────
+const BOLD = "\x1b[1m";
+const GREEN = "\x1b[32m";
+const RED = "\x1b[31m";
+const YELLOW = "\x1b[33m";
+const DIM = "\x1b[2m";
+const CYAN = "\x1b[36m";
+const RESET = "\x1b[0m";
+
+// ── Types ─────────────────────────────────────────────────────
+interface TestResult {
+  detail: string;
+  name: string;
+  passed: boolean;
+}
+
+interface ModelResult {
+  durationMs: number;
+  error?: string;
+  modelId: string;
+  modelShort: string;
+  tests: TestResult[];
+  totalPassed: number;
+  totalTests: number;
+}
+
+// ── Parse test-headless-edit-ops stdout ───────────────────────
+function parseOpsOutput(stdout: string): TestResult[] {
+  const results: TestResult[] = [];
+
+  // Match lines like: "  PASS — edit_file: 1/1 succeeded, 32.5s"
+  // or "  FAIL — edit_file: 0/3 succeeded, 15.2s"
+  // or "  ERROR — Timed out after 10 minutes"
+  // Following a line like: "1. Replace single line"
+  const lines = stdout.split("\n");
+
+  let currentTestName = "";
+  for (const line of lines) {
+    // Detect test name: starts with ANSI-colored bold cyan + "N. Name"
+    // Strip ANSI codes for matching
+    const stripped = line.replace(/\x1b\[[0-9;]*m/g, "");
+
+    // Test name pattern: "N. <name>"
+    const testNameMatch = stripped.match(/^\s*(\d+\.\s+.+)$/);
+    if (
+      testNameMatch &&
+      !stripped.includes("—") &&
+      !stripped.includes("✓") &&
+      !stripped.includes("✗")
+    ) {
+      currentTestName = testNameMatch[1].trim();
+      continue;
+    }
+
+    // Result line: PASS/FAIL/ERROR
+    if (currentTestName && stripped.includes("PASS")) {
+      const detail = stripped.replace(/^\s*PASS\s*—?\s*/, "").trim();
+      results.push({
+        name: currentTestName,
+        passed: true,
+        detail: detail || "passed",
+      });
+      currentTestName = "";
+    } else if (currentTestName && stripped.includes("FAIL")) {
+      const detail = stripped.replace(/^\s*FAIL\s*—?\s*/, "").trim();
+      results.push({
+        name: currentTestName,
+        passed: false,
+        detail: detail || "failed",
+      });
+      currentTestName = "";
+    } else if (currentTestName && stripped.includes("ERROR")) {
+      const detail = stripped.replace(/^\s*ERROR\s*—?\s*/, "").trim();
+      results.push({
+        name: currentTestName,
+        passed: false,
+        detail: detail || "error",
+      });
+      currentTestName = "";
+    }
+  }
+
+  return results;
+}
+
+// ── Run one model ────────────────────────────────────────────
+async function runModel(model: {
+  id: string;
+  short: string;
+}): Promise<ModelResult> {
+  const opsScript = resolve(import.meta.dir, "test-edit-ops.ts");
+  const startTime = Date.now();
+
+  return new Promise<ModelResult>((resolvePromise) => {
+    const proc = spawn(
+      "bun",
+      ["run", opsScript, "-m", model.id, "--no-translate"],
+      {
+        cwd: resolve(import.meta.dir),
+        env: { ...process.env, BUN_INSTALL: process.env.BUN_INSTALL },
+        stdio: ["ignore", "pipe", "pipe"],
+      }
+    );
+
+    let stdout = "";
+    let stderr = "";
+
+    proc.stdout.on("data", (chunk: Buffer) => {
+      stdout += chunk.toString();
+    });
+    proc.stderr.on("data", (chunk: Buffer) => {
+      stderr += chunk.toString();
+    });
+
+    const timeout = setTimeout(() => {
+      proc.kill("SIGTERM");
+      resolvePromise({
+        modelId: model.id,
+        modelShort: model.short,
+        tests: [],
+        totalPassed: 0,
+        totalTests: 0,
+        durationMs: Date.now() - startTime,
+        error: `Timed out after ${perModelTimeoutSec}s`,
+      });
+    }, perModelTimeoutSec * 1000);
+
+    proc.on("close", () => {
+      clearTimeout(timeout);
+      const tests = parseOpsOutput(stdout);
+      const totalPassed = tests.filter((t) => t.passed).length;
+
+      resolvePromise({
+        modelId: model.id,
+        modelShort: model.short,
+        tests,
+        totalPassed,
+        totalTests: Math.max(tests.length, 5),
+        durationMs: Date.now() - startTime,
+      });
+    });
+
+    proc.on("error", (err) => {
+      clearTimeout(timeout);
+      resolvePromise({
+        modelId: model.id,
+        modelShort: model.short,
+        tests: [],
+        totalPassed: 0,
+        totalTests: 0,
+        durationMs: Date.now() - startTime,
+        error: err.message,
+      });
+    });
+  });
+}
+
+// ── Main ──────────────────────────────────────────────────────
+const main = async () => {
+  console.log(`\n${BOLD}═══ Multi-Model edit_file Test Runner ═══${RESET}\n`);
+  console.log(`${DIM}Models: ${MODELS.map((m) => m.short).join(", ")}${RESET}`);
+  console.log(`${DIM}Timeout: ${perModelTimeoutSec}s per model${RESET}`);
+  console.log();
+
+  const allResults: ModelResult[] = [];
+
+  for (const model of MODELS) {
+    console.log(`${CYAN}${BOLD}▶ Testing ${model.short} (${model.id})${RESET}`);
+    const result = await runModel(model);
+    allResults.push(result);
+
+    const timeStr = `${(result.durationMs / 1000).toFixed(1)}s`;
+    if (result.error) {
+      console.log(`  ${RED}ERROR${RESET}: ${result.error} (${timeStr})`);
+    } else {
+      const color =
+        result.totalPassed === result.totalTests
+          ? GREEN
+          : result.totalPassed > 0
+            ? YELLOW
+            : RED;
+      console.log(
+        `  ${color}${result.totalPassed}/${result.totalTests} passed${RESET} (${timeStr})`
+      );
+      for (const t of result.tests) {
+        const icon = t.passed ? `${GREEN}✓${RESET}` : `${RED}✗${RESET}`;
+        console.log(`    ${icon} ${t.name}`);
+      }
+    }
+    console.log();
+  }
+
+  // ── Summary Table ──────────────────────────────────────────
+  console.log(`${BOLD}═══ Summary ═══${RESET}\n`);
+
+  // Per-model results
+  for (const r of allResults) {
+    const timeStr = `${(r.durationMs / 1000).toFixed(0)}s`;
+    const color = r.error ? RED : r.totalPassed === r.totalTests ? GREEN : r.totalPassed > 0 ? YELLOW : RED;
+    const label = r.error ? `ERROR: ${r.error}` : `${r.totalPassed}/${r.totalTests}`;
+    console.log(`  ${r.modelShort.padEnd(8)} ${color}${label}${RESET} (${timeStr})`);
+    for (const t of r.tests) {
+      const icon = t.passed ? `${GREEN}✓${RESET}` : `${RED}✗${RESET}`;
+      console.log(`    ${icon} ${t.name}`);
+    }
+  }
+
+  console.log();
+
+  // Overall
+  const totalModels = allResults.length;
+  const erroredModels = allResults.filter((r) => r.error).length;
+  const perfectModels = allResults.filter(
+    (r) => !r.error && r.totalPassed === r.totalTests && r.totalTests > 0
+  ).length;
+  console.log(
+    `${BOLD}Models with 100%: ${perfectModels}/${totalModels}${RESET}`
+  );
+
+  const overallPassed = allResults.reduce((sum, r) => sum + r.totalPassed, 0);
+  const overallTotal = allResults.reduce((sum, r) => sum + r.totalTests, 0);
+  console.log(
+    `${BOLD}Overall: ${overallPassed}/${overallTotal} (${Math.round((overallPassed / overallTotal) * 100)}%)${RESET}`
+  );
+
+  console.log();
+
+  if (erroredModels > 0) {
+    console.log(
+      `${BOLD}${RED}${erroredModels} model(s) errored. See details above.${RESET}\n`
+    );
+    process.exit(1);
+  } else if (perfectModels === totalModels) {
+    console.log(`${BOLD}${GREEN}🎉 ALL MODELS PASSED ALL TESTS!${RESET}\n`);
+    process.exit(0);
+  } else {
+    console.log(
+      `${BOLD}${YELLOW}Some models have failures. See details above.${RESET}\n`
+    );
+    process.exit(1);
+  }
+};
+
+main();

bin/oh-my-opencode.js

@@ -3,8 +3,9 @@
 // Wrapper script that detects platform and spawns the correct binary
 
 import { spawnSync } from "node:child_process";
+import { readFileSync } from "node:fs";
 import { createRequire } from "node:module";
-import { getPlatformPackage, getBinaryPath } from "./platform.js";
+import { getPlatformPackageCandidates, getBinaryPath } from "./platform.js";
 
 const require = createRequire(import.meta.url);
 
@@ -26,55 +27,116 @@ function getLibcFamily() {
   }
 }
 
+function supportsAvx2() {
+  if (process.arch !== "x64") {
+    return null;
+  }
+
+  if (process.env.OH_MY_OPENCODE_FORCE_BASELINE === "1") {
+    return false;
+  }
+
+  if (process.platform === "linux") {
+    try {
+      const cpuInfo = readFileSync("/proc/cpuinfo", "utf8").toLowerCase();
+      return cpuInfo.includes("avx2");
+    } catch {
+      return null;
+    }
+  }
+
+  if (process.platform === "darwin") {
+    const probe = spawnSync("sysctl", ["-n", "machdep.cpu.leaf7_features"], {
+      encoding: "utf8",
+    });
+
+    if (probe.error || probe.status !== 0) {
+      return null;
+    }
+
+    return probe.stdout.toUpperCase().includes("AVX2");
+  }
+
+  return null;
+}
+
+function getSignalExitCode(signal) {
+  const signalCodeByName = {
+    SIGINT: 2,
+    SIGILL: 4,
+    SIGKILL: 9,
+    SIGTERM: 15,
+  };
+
+  return 128 + (signalCodeByName[signal] ?? 1);
+}
+
 function main() {
   const { platform, arch } = process;
   const libcFamily = getLibcFamily();
+  const avx2Supported = supportsAvx2();
   
-  // Get platform package name
-  let pkg;
+  let packageCandidates;
   try {
-    pkg = getPlatformPackage({ platform, arch, libcFamily });
+    packageCandidates = getPlatformPackageCandidates({
+      platform,
+      arch,
+      libcFamily,
+      preferBaseline: avx2Supported === false,
+    });
   } catch (error) {
     console.error(`\noh-my-opencode: ${error.message}\n`);
     process.exit(1);
   }
-  
-  // Resolve binary path
-  const binRelPath = getBinaryPath(pkg, platform);
-  
-  let binPath;
-  try {
-    binPath = require.resolve(binRelPath);
-  } catch {
+
+  const resolvedBinaries = packageCandidates
+    .map((pkg) => {
+      try {
+        return { pkg, binPath: require.resolve(getBinaryPath(pkg, platform)) };
+      } catch {
+        return null;
+      }
+    })
+    .filter((entry) => entry !== null);
+
+  if (resolvedBinaries.length === 0) {
     console.error(`\noh-my-opencode: Platform binary not installed.`);
     console.error(`\nYour platform: ${platform}-${arch}${libcFamily === "musl" ? "-musl" : ""}`);
-    console.error(`Expected package: ${pkg}`);
+    console.error(`Expected packages (in order): ${packageCandidates.join(", ")}`);
     console.error(`\nTo fix, run:`);
-    console.error(`  npm install ${pkg}\n`);
+    console.error(`  npm install ${packageCandidates[0]}\n`);
     process.exit(1);
   }
-  
-  // Spawn the binary
-  const result = spawnSync(binPath, process.argv.slice(2), {
-    stdio: "inherit",
-  });
-  
-  // Handle spawn errors
-  if (result.error) {
-    console.error(`\noh-my-opencode: Failed to execute binary.`);
-    console.error(`Error: ${result.error.message}\n`);
-    process.exit(2);
-  }
-  
-  // Handle signals
-  if (result.signal) {
-    const signalNum = result.signal === "SIGTERM" ? 15 : 
-                      result.signal === "SIGKILL" ? 9 :
-                      result.signal === "SIGINT" ? 2 : 1;
-    process.exit(128 + signalNum);
+
+  for (let index = 0; index < resolvedBinaries.length; index += 1) {
+    const currentBinary = resolvedBinaries[index];
+    const hasFallback = index < resolvedBinaries.length - 1;
+    const result = spawnSync(currentBinary.binPath, process.argv.slice(2), {
+      stdio: "inherit",
+    });
+
+    if (result.error) {
+      if (hasFallback) {
+        continue;
+      }
+
+      console.error(`\noh-my-opencode: Failed to execute binary.`);
+      console.error(`Error: ${result.error.message}\n`);
+      process.exit(2);
+    }
+
+    if (result.signal === "SIGILL" && hasFallback) {
+      continue;
+    }
+
+    if (result.signal) {
+      process.exit(getSignalExitCode(result.signal));
+    }
+
+    process.exit(result.status ?? 1);
   }
 
-  process.exit(result.status ?? 1);
+  process.exit(1);
 }
 
 main();

bin/platform.d.ts

@@ -0,0 +1,14 @@
+export declare function getPlatformPackage(options: {
+  platform: string;
+  arch: string;
+  libcFamily?: string | null;
+}): string;
+
+export declare function getPlatformPackageCandidates(options: {
+  platform: string;
+  arch: string;
+  libcFamily?: string | null;
+  preferBaseline?: boolean;
+}): string[];
+
+export declare function getBinaryPath(pkg: string, platform: string): string;

bin/platform.js

@@ -26,6 +26,50 @@ export function getPlatformPackage({ platform, arch, libcFamily }) {
   return `oh-my-opencode-${os}-${arch}${suffix}`;
 }
 
+/** @param {{ platform: string, arch: string, libcFamily?: string | null, preferBaseline?: boolean }} options */
+export function getPlatformPackageCandidates({ platform, arch, libcFamily, preferBaseline = false }) {
+  const primaryPackage = getPlatformPackage({ platform, arch, libcFamily });
+  const baselinePackage = getBaselinePlatformPackage({ platform, arch, libcFamily });
+
+  if (!baselinePackage) {
+    return [primaryPackage];
+  }
+
+  return preferBaseline ? [baselinePackage, primaryPackage] : [primaryPackage, baselinePackage];
+}
+
+/** @param {{ platform: string, arch: string, libcFamily?: string | null }} options */
+function getBaselinePlatformPackage({ platform, arch, libcFamily }) {
+  if (arch !== "x64") {
+    return null;
+  }
+
+  if (platform === "darwin") {
+    return "oh-my-opencode-darwin-x64-baseline";
+  }
+
+  if (platform === "win32") {
+    return "oh-my-opencode-windows-x64-baseline";
+  }
+
+  if (platform === "linux") {
+    if (libcFamily === null || libcFamily === undefined) {
+      throw new Error(
+        "Could not detect libc on Linux. " +
+        "Please ensure detect-libc is installed or report this issue."
+      );
+    }
+
+    if (libcFamily === "musl") {
+      return "oh-my-opencode-linux-x64-musl-baseline";
+    }
+
+    return "oh-my-opencode-linux-x64-baseline";
+  }
+
+  return null;
+}
+
 /**
  * Get the path to the binary within a platform package
  * @param {string} pkg Package name

bin/platform.test.ts

@@ -1,6 +1,6 @@
 // bin/platform.test.ts
 import { describe, expect, test } from "bun:test";
-import { getPlatformPackage, getBinaryPath } from "./platform.js";
+import { getBinaryPath, getPlatformPackage, getPlatformPackageCandidates } from "./platform.js";
 
 describe("getPlatformPackage", () => {
   // #region Darwin platforms
@@ -146,3 +146,58 @@ describe("getBinaryPath", () => {
     expect(result).toBe("oh-my-opencode-linux-x64/bin/oh-my-opencode");
   });
 });
+
+describe("getPlatformPackageCandidates", () => {
+  test("returns x64 and baseline candidates for Linux glibc", () => {
+    // #given Linux x64 with glibc
+    const input = { platform: "linux", arch: "x64", libcFamily: "glibc" };
+
+    // #when getting package candidates
+    const result = getPlatformPackageCandidates(input);
+
+    // #then returns modern first then baseline fallback
+    expect(result).toEqual([
+      "oh-my-opencode-linux-x64",
+      "oh-my-opencode-linux-x64-baseline",
+    ]);
+  });
+
+  test("returns x64 musl and baseline candidates for Linux musl", () => {
+    // #given Linux x64 with musl
+    const input = { platform: "linux", arch: "x64", libcFamily: "musl" };
+
+    // #when getting package candidates
+    const result = getPlatformPackageCandidates(input);
+
+    // #then returns musl modern first then musl baseline fallback
+    expect(result).toEqual([
+      "oh-my-opencode-linux-x64-musl",
+      "oh-my-opencode-linux-x64-musl-baseline",
+    ]);
+  });
+
+  test("returns baseline first when preferBaseline is true", () => {
+    // #given Windows x64 and baseline preference
+    const input = { platform: "win32", arch: "x64", preferBaseline: true };
+
+    // #when getting package candidates
+    const result = getPlatformPackageCandidates(input);
+
+    // #then baseline package is preferred first
+    expect(result).toEqual([
+      "oh-my-opencode-windows-x64-baseline",
+      "oh-my-opencode-windows-x64",
+    ]);
+  });
+
+  test("returns only one candidate for ARM64", () => {
+    // #given non-x64 platform
+    const input = { platform: "linux", arch: "arm64", libcFamily: "glibc" };
+
+    // #when getting package candidates
+    const result = getPlatformPackageCandidates(input);
+
+    // #then baseline fallback is not included
+    expect(result).toEqual(["oh-my-opencode-linux-arm64"]);
+  });
+});

bun.lock

@@ -14,6 +14,7 @@
         "@opencode-ai/sdk": "^1.1.19",
         "commander": "^14.0.2",
         "detect-libc": "^2.0.0",
+        "diff": "^8.0.3",
         "js-yaml": "^4.1.1",
         "jsonc-parser": "^3.3.1",
         "picocolors": "^1.1.1",
@@ -28,13 +29,13 @@
         "typescript": "^5.7.3",
       },
       "optionalDependencies": {
-        "oh-my-opencode-darwin-arm64": "3.8.1",
-        "oh-my-opencode-darwin-x64": "3.8.1",
-        "oh-my-opencode-linux-arm64": "3.8.1",
-        "oh-my-opencode-linux-arm64-musl": "3.8.1",
-        "oh-my-opencode-linux-x64": "3.8.1",
-        "oh-my-opencode-linux-x64-musl": "3.8.1",
-        "oh-my-opencode-windows-x64": "3.8.1",
+        "oh-my-opencode-darwin-arm64": "3.8.5",
+        "oh-my-opencode-darwin-x64": "3.8.5",
+        "oh-my-opencode-linux-arm64": "3.8.5",
+        "oh-my-opencode-linux-arm64-musl": "3.8.5",
+        "oh-my-opencode-linux-x64": "3.8.5",
+        "oh-my-opencode-linux-x64-musl": "3.8.5",
+        "oh-my-opencode-windows-x64": "3.8.5",
       },
     },
   },
@@ -138,6 +139,8 @@
 
     "detect-libc": ["detect-libc@2.1.2", "", {}, "sha512-Btj2BOOO83o3WyH59e8MgXsxEQVcarkUOpEYrubB0urwnN10yQ364rsiByU11nZlqWYZm05i/of7io4mzihBtQ=="],
 
+    "diff": ["diff@8.0.3", "", {}, "sha512-qejHi7bcSD4hQAZE0tNAawRK1ZtafHDmMTMkrrIGgSLl7hTnQHmKCeB45xAcbfTqK2zowkM3j3bHt/4b/ARbYQ=="],
+
     "dunder-proto": ["dunder-proto@1.0.1", "", { "dependencies": { "call-bind-apply-helpers": "^1.0.1", "es-errors": "^1.3.0", "gopd": "^1.2.0" } }, "sha512-KIN/nDJBQRcXw0MLVhZE9iQHmG68qAVIBg9CqmUYjmQIhgij9U5MFvrqkUL5FbtyyzZuOeOt0zdeRe4UY7ct+A=="],
 
     "ee-first": ["ee-first@1.1.1", "", {}, "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow=="],
@@ -228,19 +231,19 @@
 
     "object-inspect": ["object-inspect@1.13.4", "", {}, "sha512-W67iLl4J2EXEGTbfeHCffrjDfitvLANg0UlX3wFUUSTx92KXRFegMHUVgSqE+wvhAbi4WqjGg9czysTV2Epbew=="],
 
-    "oh-my-opencode-darwin-arm64": ["oh-my-opencode-darwin-arm64@3.8.1", "", { "os": "darwin", "cpu": "arm64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-vbtS0WUFOZpufKzlX2G83fIDry3rpiXej8zNuXNCkx7hF34rK04rj0zeBH9dL+kdNV0Ys0Wl1rR1Mjto28UcAw=="],
+    "oh-my-opencode-darwin-arm64": ["oh-my-opencode-darwin-arm64@3.8.5", "", { "os": "darwin", "cpu": "arm64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-bbLu1We9NNhYAVp9Q/FK8dYFlYLp2PKfvdBCr+O6QjNRixdjp8Ru4RK7i9mKg0ybYBUzzCcbbC2Cc1o8orkhBA=="],
 
-    "oh-my-opencode-darwin-x64": ["oh-my-opencode-darwin-x64@3.8.1", "", { "os": "darwin", "cpu": "x64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-gLz6dLNg9hr7roqBjaqlxta6+XYCs032/FiE0CiwypIBtYOq5EAgDVJ95JY5DQ2M+3Un028d50yMfwsfNfGlSw=="],
+    "oh-my-opencode-darwin-x64": ["oh-my-opencode-darwin-x64@3.8.5", "", { "os": "darwin", "cpu": "x64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-N9GcmzYgL87UybSaMGiHc5lwT5Mxg1tyB502el5syouN39wfeUYoj37SonENrMUTiEfn75Lwv/5cSLCesSubpA=="],
 
-    "oh-my-opencode-linux-arm64": ["oh-my-opencode-linux-arm64@3.8.1", "", { "os": "linux", "cpu": "arm64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-teAIuHlR5xOAoUmA+e0bGzy3ikgIr+nCdyOPwHYm8jIp0aBUWAqbcdoQLeNTgenWpoM8vhHk+2xh4WcCeQzjEA=="],
+    "oh-my-opencode-linux-arm64": ["oh-my-opencode-linux-arm64@3.8.5", "", { "os": "linux", "cpu": "arm64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-ki4a7s1DD5z5wEKmzcchqAKOIpw0LsBvyF8ieqNLS5Xl8PWE0gAZ7rqjlXC54NTubpexVH6lO2yenFJsk2Zk9A=="],
 
-    "oh-my-opencode-linux-arm64-musl": ["oh-my-opencode-linux-arm64-musl@3.8.1", "", { "os": "linux", "cpu": "arm64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-VzBEq1H5dllEloouIoLdbw1icNUW99qmvErFrNj66mX42DNXK+f1zTtvBG8U6eeFfUBRRJoUjdCsvO65f8BkFA=="],
+    "oh-my-opencode-linux-arm64-musl": ["oh-my-opencode-linux-arm64-musl@3.8.5", "", { "os": "linux", "cpu": "arm64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-9+6hU3z503fBzuV0VjxIkTKFElbKacHijFcdKAussG6gPFLWmCRWtdowzEDwUfAoIsoHHH7FBwvh5waGp/ZksA=="],
 
-    "oh-my-opencode-linux-x64": ["oh-my-opencode-linux-x64@3.8.1", "", { "os": "linux", "cpu": "x64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-8hDcb8s+wdQpQObSmiyaaTV0P/js2Bs9Lu+HmzrkKjuMLXXj/Gk7K0kKWMoEnMbMGfj86GfBHHIWmu9juI/SjA=="],
+    "oh-my-opencode-linux-x64": ["oh-my-opencode-linux-x64@3.8.5", "", { "os": "linux", "cpu": "x64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-DmnMK/PgvdcCYL+OQE5iZWgi/vmjm0sIPQVQgSUbWn3izcUF7C5DtlxqaU2cKxNZwrhDTlJdLWxmJqgLmLqd9A=="],
 
-    "oh-my-opencode-linux-x64-musl": ["oh-my-opencode-linux-x64-musl@3.8.1", "", { "os": "linux", "cpu": "x64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-idyH5bdYn7wrLkIkYr83omN83E2BjA/9DUHCX2we8VXbhDVbBgmMpUg8B8nKnd5NK/SyLHgRs5QqQJw8XBC0cQ=="],
+    "oh-my-opencode-linux-x64-musl": ["oh-my-opencode-linux-x64-musl@3.8.5", "", { "os": "linux", "cpu": "x64", "bin": { "oh-my-opencode": "bin/oh-my-opencode" } }, "sha512-jhCNStljsyapVq9X7PaHSOcWxxEA4BUcIibvoPs/xc7fVP8D47p651LzIRsM6STn6Bx684mlYbxxX1P/0QPKNg=="],
 
-    "oh-my-opencode-windows-x64": ["oh-my-opencode-windows-x64@3.8.1", "", { "os": "win32", "cpu": "x64", "bin": { "oh-my-opencode": "bin/oh-my-opencode.exe" } }, "sha512-O30L1PUF9aq1vSOyadcXQOLnDFSTvYn6cGd5huh0LAK/us0hGezoahtXegMdFtDXPIIREJlkRQhyJiafza7YgA=="],
+    "oh-my-opencode-windows-x64": ["oh-my-opencode-windows-x64@3.8.5", "", { "os": "win32", "cpu": "x64", "bin": { "oh-my-opencode": "bin/oh-my-opencode.exe" } }, "sha512-lcPBp9NCNQ6TnqzsN9p/K+xKwOzBoIPw7HncxmrXSberZ3uHy0K9uNraQ7fqnXIKWqQiK4kSwWfSHpmhbaHiNg=="],
 
     "on-finished": ["on-finished@2.4.1", "", { "dependencies": { "ee-first": "1.1.1" } }, "sha512-oVlzkg3ENAhCk2zdv7IJwd/QUD4z2RxRwpkcGY8psCVcCYZNq4wYnVWALHM+brtuJjePWiYF/ClmuDr8Ch5+kg=="],
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode",
-  "version": "3.8.5",
+  "version": "3.9.0",
   "description": "The Best AI Agent Harness - Batteries-Included OpenCode Plugin with Multi-Model Orchestration, Parallel Background Agents, and Crafted LSP/AST Tools",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -60,6 +60,7 @@
     "@opencode-ai/sdk": "^1.1.19",
     "commander": "^14.0.2",
     "detect-libc": "^2.0.0",
+    "diff": "^8.0.3",
     "js-yaml": "^4.1.1",
     "jsonc-parser": "^3.3.1",
     "picocolors": "^1.1.1",
@@ -74,13 +75,17 @@
     "typescript": "^5.7.3"
   },
   "optionalDependencies": {
-    "oh-my-opencode-darwin-arm64": "3.8.5",
-    "oh-my-opencode-darwin-x64": "3.8.5",
-    "oh-my-opencode-linux-arm64": "3.8.5",
-    "oh-my-opencode-linux-arm64-musl": "3.8.5",
-    "oh-my-opencode-linux-x64": "3.8.5",
-    "oh-my-opencode-linux-x64-musl": "3.8.5",
-    "oh-my-opencode-windows-x64": "3.8.5"
+    "oh-my-opencode-darwin-arm64": "3.9.0",
+    "oh-my-opencode-darwin-x64": "3.9.0",
+    "oh-my-opencode-darwin-x64-baseline": "3.9.0",
+    "oh-my-opencode-linux-arm64": "3.9.0",
+    "oh-my-opencode-linux-arm64-musl": "3.9.0",
+    "oh-my-opencode-linux-x64": "3.9.0",
+    "oh-my-opencode-linux-x64-baseline": "3.9.0",
+    "oh-my-opencode-linux-x64-musl": "3.9.0",
+    "oh-my-opencode-linux-x64-musl-baseline": "3.9.0",
+    "oh-my-opencode-windows-x64": "3.9.0",
+    "oh-my-opencode-windows-x64-baseline": "3.9.0"
   },
   "trustedDependencies": [
     "@ast-grep/cli",

packages/darwin-arm64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-darwin-arm64",
-  "version": "3.8.5",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (darwin-arm64)",
   "license": "MIT",
   "repository": {

packages/darwin-x64-baseline/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-darwin-x64-baseline",
-  "version": "3.1.1",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (darwin-x64-baseline, no AVX2)",
   "license": "MIT",
   "repository": {

packages/darwin-x64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-darwin-x64",
-  "version": "3.8.5",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (darwin-x64)",
   "license": "MIT",
   "repository": {

packages/linux-arm64-musl/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-linux-arm64-musl",
-  "version": "3.8.5",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (linux-arm64-musl)",
   "license": "MIT",
   "repository": {

packages/linux-arm64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-linux-arm64",
-  "version": "3.8.5",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (linux-arm64)",
   "license": "MIT",
   "repository": {

packages/linux-x64-baseline/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-linux-x64-baseline",
-  "version": "3.1.1",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (linux-x64-baseline, no AVX2)",
   "license": "MIT",
   "repository": {

packages/linux-x64-musl-baseline/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-linux-x64-musl-baseline",
-  "version": "3.1.1",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (linux-x64-musl-baseline, no AVX2)",
   "license": "MIT",
   "repository": {

packages/linux-x64-musl/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-linux-x64-musl",
-  "version": "3.8.5",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (linux-x64-musl)",
   "license": "MIT",
   "repository": {

packages/linux-x64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-linux-x64",
-  "version": "3.8.5",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (linux-x64)",
   "license": "MIT",
   "repository": {

packages/windows-x64-baseline/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-windows-x64-baseline",
-  "version": "3.1.1",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (windows-x64-baseline, no AVX2)",
   "license": "MIT",
   "repository": {

packages/windows-x64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oh-my-opencode-windows-x64",
-  "version": "3.8.5",
+  "version": "3.9.0",
   "description": "Platform-specific binary for oh-my-opencode (windows-x64)",
   "license": "MIT",
   "repository": {

postinstall.mjs

@@ -2,7 +2,7 @@
 // Runs after npm install to verify platform binary is available
 
 import { createRequire } from "node:module";
-import { getPlatformPackage, getBinaryPath } from "./bin/platform.js";
+import { getPlatformPackageCandidates, getBinaryPath } from "./bin/platform.js";
 
 const require = createRequire(import.meta.url);
 
@@ -27,12 +27,28 @@ function main() {
   const libcFamily = getLibcFamily();
   
   try {
-    const pkg = getPlatformPackage({ platform, arch, libcFamily });
-    const binPath = getBinaryPath(pkg, platform);
-    
-    // Try to resolve the binary
-    require.resolve(binPath);
-    console.log(`✓ oh-my-opencode binary installed for ${platform}-${arch}`);
+    const packageCandidates = getPlatformPackageCandidates({
+      platform,
+      arch,
+      libcFamily,
+    });
+
+    const resolvedPackage = packageCandidates.find((pkg) => {
+      try {
+        require.resolve(getBinaryPath(pkg, platform));
+        return true;
+      } catch {
+        return false;
+      }
+    });
+
+    if (!resolvedPackage) {
+      throw new Error(
+        `No platform binary package installed. Tried: ${packageCandidates.join(", ")}`
+      );
+    }
+
+    console.log(`✓ oh-my-opencode binary installed for ${platform}-${arch} (${resolvedPackage})`);
   } catch (error) {
     console.warn(`⚠ oh-my-opencode: ${error.message}`);
     console.warn(`  The CLI may not work on this platform.`);

signatures/cla.json

@@ -1703,6 +1703,70 @@
       "created_at": "2026-02-23T19:27:59Z",
       "repoId": 1108837393,
       "pullRequestNo": 2080
+    },
+    {
+      "name": "PHP-Expert",
+      "id": 12047666,
+      "comment_id": 3951828700,
+      "created_at": "2026-02-24T13:27:18Z",
+      "repoId": 1108837393,
+      "pullRequestNo": 2098
+    },
+    {
+      "name": "Pantoria",
+      "id": 37699442,
+      "comment_id": 3953543578,
+      "created_at": "2026-02-24T17:12:31Z",
+      "repoId": 1108837393,
+      "pullRequestNo": 1983
+    },
+    {
+      "name": "east-shine",
+      "id": 20237288,
+      "comment_id": 3957576758,
+      "created_at": "2026-02-25T08:19:34Z",
+      "repoId": 1108837393,
+      "pullRequestNo": 2113
+    },
+    {
+      "name": "SupenBysz",
+      "id": 3314033,
+      "comment_id": 3962352704,
+      "created_at": "2026-02-25T22:00:54Z",
+      "repoId": 1108837393,
+      "pullRequestNo": 2119
+    },
+    {
+      "name": "zhzy0077",
+      "id": 8717471,
+      "comment_id": 3964015975,
+      "created_at": "2026-02-26T04:45:23Z",
+      "repoId": 1108837393,
+      "pullRequestNo": 2125
+    },
+    {
+      "name": "spacecowboy0416",
+      "id": 239068998,
+      "comment_id": 3964320737,
+      "created_at": "2026-02-26T06:05:27Z",
+      "repoId": 1108837393,
+      "pullRequestNo": 2126
+    },
+    {
+      "name": "imwxc",
+      "id": 49653609,
+      "comment_id": 3965127447,
+      "created_at": "2026-02-26T09:00:16Z",
+      "repoId": 1108837393,
+      "pullRequestNo": 2129
+    },
+    {
+      "name": "maou-shonen",
+      "id": 22576780,
+      "comment_id": 3965445132,
+      "created_at": "2026-02-26T09:50:46Z",
+      "repoId": 1108837393,
+      "pullRequestNo": 2131
     }
   ]
 }

src/AGENTS.md

@@ -1,6 +1,6 @@
 # src/ — Plugin Source
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 
@@ -14,7 +14,7 @@ Root source directory. Entry point `index.ts` orchestrates 4-step initialization
 | `plugin-config.ts` | JSONC parse, multi-level merge (user → project → defaults), Zod validation |
 | `create-managers.ts` | TmuxSessionManager, BackgroundManager, SkillMcpManager, ConfigHandler |
 | `create-tools.ts` | SkillContext + AvailableCategories + ToolRegistry |
-| `create-hooks.ts` | 3-tier hook composition: Core(35) + Continuation(7) + Skill(2) |
+| `create-hooks.ts` | 3-tier hook composition: Core(37) + Continuation(7) + Skill(2) |
 | `plugin-interface.ts` | Assembles 8 OpenCode hook handlers into PluginInterface |
 
 ## CONFIG LOADING
@@ -32,9 +32,9 @@ loadPluginConfig(directory, ctx)
 
 ```
 createHooks()
-  ├─→ createCoreHooks()           # 35 hooks
-  │   ├─ createSessionHooks()     # 21: contextWindowMonitor, thinkMode, ralphLoop, sessionRecovery, jsonErrorRecovery, sisyphusGptHephaestusReminder, anthropicEffort...
-  │   ├─ createToolGuardHooks()   # 10: commentChecker, rulesInjector, writeExistingFileGuard, hashlineEditDiffEnhancer...
+  ├─→ createCoreHooks()           # 37 hooks
+  │   ├─ createSessionHooks()     # 23: contextWindowMonitor, thinkMode, ralphLoop, modelFallback, runtimeFallback, noSisyphusGpt, noHephaestusNonGpt, anthropicEffort...
+  │   ├─ createToolGuardHooks()   # 10: commentChecker, rulesInjector, writeExistingFileGuard, jsonErrorRecovery, hashlineReadEnhancer...
   │   └─ createTransformHooks()   # 4: claudeCodeHooks, keywordDetector, contextInjector, thinkingBlockValidator
   ├─→ createContinuationHooks()   # 7: todoContinuationEnforcer, atlas, stopContinuationGuard...
   └─→ createSkillHooks()          # 2: categorySkillReminder, autoSlashCommand

src/agents/AGENTS.md

@@ -1,6 +1,6 @@
 # src/agents/ — 11 Agent Definitions
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/agents/atlas/agent.ts

@@ -17,7 +17,6 @@ import type { AvailableAgent, AvailableSkill, AvailableCategory } from "../dynam
 import { buildCategorySkillsDelegationGuide } from "../dynamic-agent-prompt-builder"
 import type { CategoryConfig } from "../../config/schema"
 import { mergeCategories } from "../../shared/merge-categories"
-import { createAgentToolRestrictions } from "../../shared/permission-compat"
 
 import { getDefaultAtlasPrompt } from "./default"
 import { getGptAtlasPrompt } from "./gpt"
@@ -30,7 +29,7 @@ import {
   buildDecisionMatrix,
 } from "./prompt-section-builder"
 
-const MODE: AgentMode = "primary"
+const MODE: AgentMode = "all"
 
 export type AtlasPromptSource = "default" | "gpt" | "gemini"
 
@@ -100,11 +99,6 @@ function buildDynamicOrchestratorPrompt(ctx?: OrchestratorContext): string {
 }
 
 export function createAtlasAgent(ctx: OrchestratorContext): AgentConfig {
-  const restrictions = createAgentToolRestrictions([
-    "task",
-    "call_omo_agent",
-  ])
-
   const baseConfig = {
     description:
       "Orchestrates work via task() to complete ALL tasks in a todo list until fully done. (Atlas - OhMyOpenCode)",
@@ -113,7 +107,6 @@ export function createAtlasAgent(ctx: OrchestratorContext): AgentConfig {
     temperature: 0.1,
     prompt: buildDynamicOrchestratorPrompt(ctx),
     color: "#10B981",
-    ...restrictions,
   }
 
   return baseConfig as AgentConfig

src/agents/env-context.test.ts

@@ -0,0 +1,41 @@
+/// <reference types="bun-types" />
+
+import { describe, test, expect } from "bun:test"
+import { createEnvContext } from "./env-context"
+
+describe("createEnvContext", () => {
+  test("returns omo-env block with timezone and locale", () => {
+    // #given - no setup needed
+
+    // #when
+    const result = createEnvContext()
+
+    // #then
+    expect(result).toContain("<omo-env>")
+    expect(result).toContain("</omo-env>")
+    expect(result).toContain("Timezone:")
+    expect(result).toContain("Locale:")
+    expect(result).not.toContain("Current date:")
+  })
+
+  test("does not include time with seconds precision to preserve token cache", () => {
+    // #given - seconds-precision time changes every second, breaking cache on every request
+
+    // #when
+    const result = createEnvContext()
+
+    // #then - no HH:MM:SS pattern anywhere in the output
+    expect(result).not.toMatch(/\d{1,2}:\d{2}:\d{2}/)
+  })
+
+  test("does not include date or time fields since OpenCode already provides them", () => {
+    // #given - OpenCode's system.ts already injects date, platform, working directory
+
+    // #when
+    const result = createEnvContext()
+
+    // #then - only timezone and locale remain; both are stable across requests
+    expect(result).not.toContain("Current date:")
+    expect(result).not.toContain("Current time:")
+  })
+})

src/agents/env-context.ts

@@ -1,32 +1,15 @@
 /**
- * Creates OmO-specific environment context (time, timezone, locale).
+ * Creates OmO-specific environment context (timezone, locale).
  * Note: Working directory, platform, and date are already provided by OpenCode's system.ts,
  * so we only include fields that OpenCode doesn't provide to avoid duplication.
  * See: https://github.com/code-yeongyu/oh-my-opencode/issues/379
  */
 export function createEnvContext(): string {
-  const now = new Date()
   const timezone = Intl.DateTimeFormat().resolvedOptions().timeZone
   const locale = Intl.DateTimeFormat().resolvedOptions().locale
 
-  const dateStr = now.toLocaleDateString(locale, {
-    weekday: "short",
-    year: "numeric",
-    month: "short",
-    day: "numeric",
-  })
-
-  const timeStr = now.toLocaleTimeString(locale, {
-    hour: "2-digit",
-    minute: "2-digit",
-    second: "2-digit",
-    hour12: true,
-  })
-
   return `
 <omo-env>
-  Current date: ${dateStr}
-  Current time: ${timeStr}
   Timezone: ${timezone}
   Locale: ${locale}
 </omo-env>`

src/agents/hephaestus.ts

@@ -19,7 +19,7 @@ import {
   categorizeTools,
 } from "./dynamic-agent-prompt-builder";
 
-const MODE: AgentMode = "primary";
+const MODE: AgentMode = "all";
 
 function buildTodoDisciplineSection(useTaskSystem: boolean): string {
   if (useTaskSystem) {

src/agents/sisyphus.ts

@@ -8,7 +8,7 @@ import {
   buildGeminiIntentGateEnforcement,
 } from "./sisyphus-gemini-overlays";
 
-const MODE: AgentMode = "primary";
+const MODE: AgentMode = "all";
 export const SISYPHUS_PROMPT_METADATA: AgentPromptMetadata = {
   category: "utility",
   cost: "EXPENSIVE",

src/agents/tool-restrictions.test.ts

@@ -4,6 +4,7 @@ import { createLibrarianAgent } from "./librarian"
 import { createExploreAgent } from "./explore"
 import { createMomusAgent } from "./momus"
 import { createMetisAgent } from "./metis"
+import { createAtlasAgent } from "./atlas"
 
 const TEST_MODEL = "anthropic/claude-sonnet-4-5"
 
@@ -96,4 +97,18 @@ describe("read-only agent tool restrictions", () => {
       }
     })
   })
+
+  describe("Atlas", () => {
+    test("allows delegation tools for orchestration", () => {
+      // given
+      const agent = createAtlasAgent({ model: TEST_MODEL })
+
+      // when
+      const permission = (agent.permission ?? {}) as Record<string, string>
+
+      // then
+      expect(permission["task"]).toBeUndefined()
+      expect(permission["call_omo_agent"]).toBeUndefined()
+    })
+  })
 })

src/agents/types.test.ts

@@ -2,11 +2,17 @@ import { describe, test, expect } from "bun:test";
 import { isGptModel, isGeminiModel } from "./types";
 
 describe("isGptModel", () => {
-  test("standard openai provider models", () => {
+  test("standard openai provider gpt models", () => {
     expect(isGptModel("openai/gpt-5.2")).toBe(true);
     expect(isGptModel("openai/gpt-4o")).toBe(true);
-    expect(isGptModel("openai/o1")).toBe(true);
-    expect(isGptModel("openai/o3-mini")).toBe(true);
+  });
+
+  test("o-series models are not gpt by name", () => {
+    expect(isGptModel("openai/o1")).toBe(false);
+    expect(isGptModel("openai/o3-mini")).toBe(false);
+    expect(isGptModel("litellm/o1")).toBe(false);
+    expect(isGptModel("litellm/o3-mini")).toBe(false);
+    expect(isGptModel("litellm/o4-mini")).toBe(false);
   });
 
   test("github copilot gpt models", () => {
@@ -17,9 +23,6 @@ describe("isGptModel", () => {
   test("litellm proxied gpt models", () => {
     expect(isGptModel("litellm/gpt-5.2")).toBe(true);
     expect(isGptModel("litellm/gpt-4o")).toBe(true);
-    expect(isGptModel("litellm/o1")).toBe(true);
-    expect(isGptModel("litellm/o3-mini")).toBe(true);
-    expect(isGptModel("litellm/o4-mini")).toBe(true);
   });
 
   test("other proxied gpt models", () => {
@@ -27,6 +30,11 @@ describe("isGptModel", () => {
     expect(isGptModel("custom-provider/gpt-5.2")).toBe(true);
   });
 
+  test("venice provider gpt models", () => {
+    expect(isGptModel("venice/gpt-5.2")).toBe(true);
+    expect(isGptModel("venice/gpt-4o")).toBe(true);
+  });
+
   test("gpt4 prefix without hyphen (legacy naming)", () => {
     expect(isGptModel("litellm/gpt4o")).toBe(true);
     expect(isGptModel("ollama/gpt4")).toBe(true);
@@ -39,8 +47,8 @@ describe("isGptModel", () => {
   });
 
   test("gemini models are not gpt", () => {
-    expect(isGptModel("google/gemini-3-pro")).toBe(false);
-    expect(isGptModel("litellm/gemini-3-pro")).toBe(false);
+    expect(isGptModel("google/gemini-3.1-pro")).toBe(false);
+    expect(isGptModel("litellm/gemini-3.1-pro")).toBe(false);
   });
 
   test("opencode provider is not gpt", () => {
@@ -50,29 +58,29 @@ describe("isGptModel", () => {
 
 describe("isGeminiModel", () => {
   test("#given google provider models #then returns true", () => {
-    expect(isGeminiModel("google/gemini-3-pro")).toBe(true);
+    expect(isGeminiModel("google/gemini-3.1-pro")).toBe(true);
     expect(isGeminiModel("google/gemini-3-flash")).toBe(true);
     expect(isGeminiModel("google/gemini-2.5-pro")).toBe(true);
   });
 
   test("#given google-vertex provider models #then returns true", () => {
-    expect(isGeminiModel("google-vertex/gemini-3-pro")).toBe(true);
+    expect(isGeminiModel("google-vertex/gemini-3.1-pro")).toBe(true);
     expect(isGeminiModel("google-vertex/gemini-3-flash")).toBe(true);
   });
 
   test("#given github copilot gemini models #then returns true", () => {
-    expect(isGeminiModel("github-copilot/gemini-3-pro")).toBe(true);
+    expect(isGeminiModel("github-copilot/gemini-3.1-pro")).toBe(true);
     expect(isGeminiModel("github-copilot/gemini-3-flash")).toBe(true);
   });
 
   test("#given litellm proxied gemini models #then returns true", () => {
-    expect(isGeminiModel("litellm/gemini-3-pro")).toBe(true);
+    expect(isGeminiModel("litellm/gemini-3.1-pro")).toBe(true);
     expect(isGeminiModel("litellm/gemini-3-flash")).toBe(true);
     expect(isGeminiModel("litellm/gemini-2.5-pro")).toBe(true);
   });
 
   test("#given other proxied gemini models #then returns true", () => {
-    expect(isGeminiModel("custom-provider/gemini-3-pro")).toBe(true);
+    expect(isGeminiModel("custom-provider/gemini-3.1-pro")).toBe(true);
     expect(isGeminiModel("ollama/gemini-3-flash")).toBe(true);
   });
 

src/agents/types.ts

@@ -70,14 +70,9 @@ function extractModelName(model: string): string {
   return model.includes("/") ? model.split("/").pop() ?? model : model
 }
 
-const GPT_MODEL_PREFIXES = ["gpt-", "gpt4", "o1", "o3", "o4"]
-
 export function isGptModel(model: string): boolean {
-  if (model.startsWith("openai/") || model.startsWith("github-copilot/gpt-"))
-    return true
-
   const modelName = extractModelName(model).toLowerCase()
-  return GPT_MODEL_PREFIXES.some((prefix) => modelName.startsWith(prefix))
+  return modelName.includes("gpt")
 }
 
 const GEMINI_PROVIDERS = ["google/", "google-vertex/"]

src/agents/utils.test.ts

@@ -589,20 +589,22 @@ describe("createBuiltinAgents with requiresProvider gating (hephaestus)", () =>
     }
   })
 
-  test("hephaestus is created when github-copilot provider is connected", async () => {
-    // #given - github-copilot provider has models available
+  test("hephaestus IS created when github-copilot is connected with a GPT model", async () => {
+    // #given - github-copilot provider has gpt-5.3-codex available
     const fetchSpy = spyOn(shared, "fetchAvailableModels").mockResolvedValue(
       new Set(["github-copilot/gpt-5.3-codex"])
     )
+    const cacheSpy = spyOn(connectedProvidersCache, "readConnectedProvidersCache").mockReturnValue(null)
 
     try {
       // #when
       const agents = await createBuiltinAgents([], {}, undefined, TEST_DEFAULT_MODEL, undefined, undefined, [], {})
 
-      // #then
+      // #then - github-copilot is now a valid provider for hephaestus
       expect(agents.hephaestus).toBeDefined()
     } finally {
       fetchSpy.mockRestore()
+      cacheSpy.mockRestore()
     }
   })
 
@@ -986,7 +988,7 @@ describe("buildAgent with category and skills", () => {
     const agent = buildAgent(source["test-agent"], TEST_MODEL)
 
     // #then - category's built-in model is applied
-    expect(agent.model).toBe("google/gemini-3-pro")
+    expect(agent.model).toBe("google/gemini-3.1-pro")
   })
 
   test("agent with category and existing model keeps existing model", () => {

src/cli/AGENTS.md

@@ -1,6 +1,6 @@
 # src/cli/ — CLI: install, run, doctor, mcp-oauth
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/cli/__snapshots__/model-fallback.test.ts.snap

@@ -325,7 +325,7 @@ exports[`generateModelConfig single native provider uses Gemini models when only
   "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
   "agents": {
     "atlas": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
     },
     "explore": {
       "model": "opencode/gpt-5-nano",
@@ -334,34 +334,34 @@ exports[`generateModelConfig single native provider uses Gemini models when only
       "model": "opencode/glm-4.7-free",
     },
     "metis": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "momus": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "multimodal-looker": {
       "model": "google/gemini-3-flash-preview",
     },
     "oracle": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "prometheus": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
     },
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "quick": {
       "model": "google/gemini-3-flash-preview",
     },
     "ultrabrain": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "unspecified-high": {
@@ -371,7 +371,7 @@ exports[`generateModelConfig single native provider uses Gemini models when only
       "model": "google/gemini-3-flash-preview",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -386,7 +386,7 @@ exports[`generateModelConfig single native provider uses Gemini models with isMa
   "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
   "agents": {
     "atlas": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
     },
     "explore": {
       "model": "opencode/gpt-5-nano",
@@ -395,44 +395,44 @@ exports[`generateModelConfig single native provider uses Gemini models with isMa
       "model": "opencode/glm-4.7-free",
     },
     "metis": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "momus": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "multimodal-looker": {
       "model": "google/gemini-3-flash-preview",
     },
     "oracle": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "prometheus": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
     },
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "quick": {
       "model": "google/gemini-3-flash-preview",
     },
     "ultrabrain": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "unspecified-high": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
     },
     "unspecified-low": {
       "model": "google/gemini-3-flash-preview",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -485,7 +485,7 @@ exports[`generateModelConfig all native providers uses preferred models from fal
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -506,7 +506,7 @@ exports[`generateModelConfig all native providers uses preferred models from fal
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -559,7 +559,7 @@ exports[`generateModelConfig all native providers uses preferred models with isM
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -581,7 +581,7 @@ exports[`generateModelConfig all native providers uses preferred models with isM
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -634,7 +634,7 @@ exports[`generateModelConfig fallback providers uses OpenCode Zen models when on
   },
   "categories": {
     "artistry": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "deep": {
@@ -655,7 +655,7 @@ exports[`generateModelConfig fallback providers uses OpenCode Zen models when on
       "model": "opencode/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "writing": {
@@ -708,7 +708,7 @@ exports[`generateModelConfig fallback providers uses OpenCode Zen models with is
   },
   "categories": {
     "artistry": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "deep": {
@@ -730,7 +730,7 @@ exports[`generateModelConfig fallback providers uses OpenCode Zen models with is
       "model": "opencode/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "writing": {
@@ -750,10 +750,6 @@ exports[`generateModelConfig fallback providers uses GitHub Copilot models when
     "explore": {
       "model": "github-copilot/gpt-5-mini",
     },
-    "hephaestus": {
-      "model": "github-copilot/gpt-5.3-codex",
-      "variant": "medium",
-    },
     "librarian": {
       "model": "github-copilot/claude-sonnet-4.5",
     },
@@ -783,19 +779,15 @@ exports[`generateModelConfig fallback providers uses GitHub Copilot models when
   },
   "categories": {
     "artistry": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
-    "deep": {
-      "model": "github-copilot/gpt-5.3-codex",
-      "variant": "medium",
-    },
     "quick": {
       "model": "github-copilot/claude-haiku-4.5",
     },
     "ultrabrain": {
-      "model": "github-copilot/gpt-5.3-codex",
-      "variant": "xhigh",
+      "model": "github-copilot/gemini-3.1-pro-preview",
+      "variant": "high",
     },
     "unspecified-high": {
       "model": "github-copilot/claude-sonnet-4.5",
@@ -804,7 +796,7 @@ exports[`generateModelConfig fallback providers uses GitHub Copilot models when
       "model": "github-copilot/claude-sonnet-4.5",
     },
     "visual-engineering": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -824,10 +816,6 @@ exports[`generateModelConfig fallback providers uses GitHub Copilot models with
     "explore": {
       "model": "github-copilot/gpt-5-mini",
     },
-    "hephaestus": {
-      "model": "github-copilot/gpt-5.3-codex",
-      "variant": "medium",
-    },
     "librarian": {
       "model": "github-copilot/claude-sonnet-4.5",
     },
@@ -857,19 +845,15 @@ exports[`generateModelConfig fallback providers uses GitHub Copilot models with
   },
   "categories": {
     "artistry": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
-    "deep": {
-      "model": "github-copilot/gpt-5.3-codex",
-      "variant": "medium",
-    },
     "quick": {
       "model": "github-copilot/claude-haiku-4.5",
     },
     "ultrabrain": {
-      "model": "github-copilot/gpt-5.3-codex",
-      "variant": "xhigh",
+      "model": "github-copilot/gemini-3.1-pro-preview",
+      "variant": "high",
     },
     "unspecified-high": {
       "model": "github-copilot/claude-opus-4.6",
@@ -879,7 +863,7 @@ exports[`generateModelConfig fallback providers uses GitHub Copilot models with
       "model": "github-copilot/claude-sonnet-4.5",
     },
     "visual-engineering": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -1042,7 +1026,7 @@ exports[`generateModelConfig mixed provider scenarios uses Claude + OpenCode Zen
   },
   "categories": {
     "artistry": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "deep": {
@@ -1063,7 +1047,7 @@ exports[`generateModelConfig mixed provider scenarios uses Claude + OpenCode Zen
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "writing": {
@@ -1116,7 +1100,7 @@ exports[`generateModelConfig mixed provider scenarios uses OpenAI + Copilot comb
   },
   "categories": {
     "artistry": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -1137,7 +1121,7 @@ exports[`generateModelConfig mixed provider scenarios uses OpenAI + Copilot comb
       "model": "github-copilot/claude-sonnet-4.5",
     },
     "visual-engineering": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -1233,7 +1217,7 @@ exports[`generateModelConfig mixed provider scenarios uses Gemini + Claude combi
       "model": "google/gemini-3-flash-preview",
     },
     "oracle": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "prometheus": {
@@ -1247,14 +1231,14 @@ exports[`generateModelConfig mixed provider scenarios uses Gemini + Claude combi
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "quick": {
       "model": "anthropic/claude-haiku-4-5",
     },
     "ultrabrain": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "unspecified-high": {
@@ -1264,7 +1248,7 @@ exports[`generateModelConfig mixed provider scenarios uses Gemini + Claude combi
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -1285,7 +1269,7 @@ exports[`generateModelConfig mixed provider scenarios uses all fallback provider
       "model": "opencode/claude-haiku-4-5",
     },
     "hephaestus": {
-      "model": "github-copilot/gpt-5.3-codex",
+      "model": "opencode/gpt-5.3-codex",
       "variant": "medium",
     },
     "librarian": {
@@ -1317,18 +1301,18 @@ exports[`generateModelConfig mixed provider scenarios uses all fallback provider
   },
   "categories": {
     "artistry": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
-      "model": "github-copilot/gpt-5.3-codex",
+      "model": "opencode/gpt-5.3-codex",
       "variant": "medium",
     },
     "quick": {
       "model": "github-copilot/claude-haiku-4.5",
     },
     "ultrabrain": {
-      "model": "github-copilot/gpt-5.3-codex",
+      "model": "opencode/gpt-5.3-codex",
       "variant": "xhigh",
     },
     "unspecified-high": {
@@ -1338,7 +1322,7 @@ exports[`generateModelConfig mixed provider scenarios uses all fallback provider
       "model": "github-copilot/claude-sonnet-4.5",
     },
     "visual-engineering": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -1391,7 +1375,7 @@ exports[`generateModelConfig mixed provider scenarios uses all providers togethe
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -1412,7 +1396,7 @@ exports[`generateModelConfig mixed provider scenarios uses all providers togethe
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -1465,7 +1449,7 @@ exports[`generateModelConfig mixed provider scenarios uses all providers with is
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -1487,7 +1471,7 @@ exports[`generateModelConfig mixed provider scenarios uses all providers with is
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {

src/cli/config-manager.test.ts

@@ -178,7 +178,7 @@ describe("config-manager ANTIGRAVITY_PROVIDER_CONFIG", () => {
     expect(models).toBeTruthy()
 
     const required = [
-      "antigravity-gemini-3-pro",
+      "antigravity-gemini-3.1-pro",
       "antigravity-gemini-3-flash",
       "antigravity-claude-sonnet-4-6",
       "antigravity-claude-sonnet-4-6-thinking",
@@ -206,7 +206,7 @@ describe("config-manager ANTIGRAVITY_PROVIDER_CONFIG", () => {
     const models = (ANTIGRAVITY_PROVIDER_CONFIG as any).google.models as Record<string, any>
 
     // #when checking Gemini Pro variants
-    const pro = models["antigravity-gemini-3-pro"]
+    const pro = models["antigravity-gemini-3.1-pro"]
     // #then should have low and high variants
     expect(pro.variants).toBeTruthy()
     expect(pro.variants.low).toBeTruthy()

src/cli/config-manager/AGENTS.md

@@ -1,6 +1,6 @@
 # src/cli/config-manager/ — CLI Installation Utilities
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/cli/config-manager/antigravity-provider-configuration.ts

@@ -4,10 +4,10 @@
  * IMPORTANT: Model names MUST use `antigravity-` prefix for stability.
  *
  * Since opencode-antigravity-auth v1.3.0, models use a variant system:
- * - `antigravity-gemini-3-pro` with variants: low, high
+ * - `antigravity-gemini-3.1-pro` with variants: low, high
  * - `antigravity-gemini-3-flash` with variants: minimal, low, medium, high
  *
- * Legacy tier-suffixed names (e.g., `antigravity-gemini-3-pro-high`) still work
+ * Legacy tier-suffixed names (e.g., `antigravity-gemini-3.1-pro-high`) still work
  * but variants are the recommended approach.
  *
  * @see https://github.com/NoeFabris/opencode-antigravity-auth#models
@@ -16,7 +16,7 @@ export const ANTIGRAVITY_PROVIDER_CONFIG = {
   google: {
     name: "Google",
     models: {
-      "antigravity-gemini-3-pro": {
+      "antigravity-gemini-3.1-pro": {
         name: "Gemini 3 Pro (Antigravity)",
         limit: { context: 1048576, output: 65535 },
         modalities: { input: ["text", "image", "pdf"], output: ["text"] },

src/cli/config-manager/bun-install.ts

@@ -1,4 +1,5 @@
 import { getConfigDir } from "./config-context"
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide"
 
 const BUN_INSTALL_TIMEOUT_SECONDS = 60
 const BUN_INSTALL_TIMEOUT_MS = BUN_INSTALL_TIMEOUT_SECONDS * 1000
@@ -16,7 +17,7 @@ export async function runBunInstall(): Promise<boolean> {
 
 export async function runBunInstallWithDetails(): Promise<BunInstallResult> {
   try {
-    const proc = Bun.spawn(["bun", "install"], {
+    const proc = spawnWithWindowsHide(["bun", "install"], {
       cwd: getConfigDir(),
       stdout: "inherit",
       stderr: "inherit",

src/cli/config-manager/opencode-binary.ts

@@ -1,4 +1,5 @@
 import type { OpenCodeBinaryType } from "../../shared/opencode-config-dir-types"
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide"
 import { initConfigContext } from "./config-context"
 
 const OPENCODE_BINARIES = ["opencode", "opencode-desktop"] as const
@@ -11,7 +12,7 @@ interface OpenCodeBinaryResult {
 async function findOpenCodeBinaryWithVersion(): Promise<OpenCodeBinaryResult | null> {
   for (const binary of OPENCODE_BINARIES) {
     try {
-      const proc = Bun.spawn([binary, "--version"], {
+      const proc = spawnWithWindowsHide([binary, "--version"], {
         stdout: "pipe",
         stderr: "pipe",
       })

src/cli/config-manager/write-omo-config.test.ts

@@ -0,0 +1,80 @@
+import { afterEach, beforeEach, describe, expect, it } from "bun:test"
+import { mkdirSync, readFileSync, rmSync, writeFileSync } from "node:fs"
+import { tmpdir } from "node:os"
+import { join } from "node:path"
+
+import { parseJsonc } from "../../shared/jsonc-parser"
+import type { InstallConfig } from "../types"
+import { resetConfigContext } from "./config-context"
+import { generateOmoConfig } from "./generate-omo-config"
+import { writeOmoConfig } from "./write-omo-config"
+
+const installConfig: InstallConfig = {
+  hasClaude: true,
+  isMax20: true,
+  hasOpenAI: true,
+  hasGemini: true,
+  hasCopilot: false,
+  hasOpencodeZen: false,
+  hasZaiCodingPlan: false,
+  hasKimiForCoding: false,
+}
+
+function getRecord(value: unknown): Record<string, unknown> {
+  if (value && typeof value === "object" && !Array.isArray(value)) {
+    return value as Record<string, unknown>
+  }
+
+  return {}
+}
+
+describe("writeOmoConfig", () => {
+  let testConfigDir = ""
+  let testConfigPath = ""
+
+  beforeEach(() => {
+    testConfigDir = join(tmpdir(), `omo-write-config-${Date.now()}-${Math.random().toString(36).slice(2)}`)
+    testConfigPath = join(testConfigDir, "oh-my-opencode.json")
+
+    mkdirSync(testConfigDir, { recursive: true })
+    process.env.OPENCODE_CONFIG_DIR = testConfigDir
+    resetConfigContext()
+  })
+
+  afterEach(() => {
+    rmSync(testConfigDir, { recursive: true, force: true })
+    resetConfigContext()
+    delete process.env.OPENCODE_CONFIG_DIR
+  })
+
+  it("preserves existing user values while adding new defaults", () => {
+    // given
+    const existingConfig = {
+      agents: {
+        sisyphus: {
+          model: "custom/provider-model",
+        },
+      },
+      disabled_hooks: ["comment-checker"],
+    }
+    writeFileSync(testConfigPath, JSON.stringify(existingConfig, null, 2) + "\n", "utf-8")
+
+    const generatedDefaults = generateOmoConfig(installConfig)
+
+    // when
+    const result = writeOmoConfig(installConfig)
+
+    // then
+    expect(result.success).toBe(true)
+
+    const savedConfig = parseJsonc<Record<string, unknown>>(readFileSync(testConfigPath, "utf-8"))
+    const savedAgents = getRecord(savedConfig.agents)
+    const savedSisyphus = getRecord(savedAgents.sisyphus)
+    expect(savedSisyphus.model).toBe("custom/provider-model")
+    expect(savedConfig.disabled_hooks).toEqual(["comment-checker"])
+
+    for (const defaultKey of Object.keys(generatedDefaults)) {
+      expect(savedConfig).toHaveProperty(defaultKey)
+    }
+  })
+})

src/cli/config-manager/write-omo-config.ts

@@ -43,7 +43,7 @@ export function writeOmoConfig(installConfig: InstallConfig): ConfigMergeResult
           return { success: true, configPath: omoConfigPath }
         }
 
-        const merged = deepMergeRecord(existing, newConfig)
+        const merged = deepMergeRecord(newConfig, existing)
         writeFileSync(omoConfigPath, JSON.stringify(merged, null, 2) + "\n")
       } catch (parseErr) {
         if (parseErr instanceof SyntaxError) {

src/cli/doctor/checks/dependencies.ts

@@ -3,6 +3,7 @@ import { createRequire } from "node:module"
 import { dirname, join } from "node:path"
 
 import type { DependencyInfo } from "../types"
+import { spawnWithWindowsHide } from "../../../shared/spawn-with-windows-hide"
 
 async function checkBinaryExists(binary: string): Promise<{ exists: boolean; path: string | null }> {
   try {
@@ -18,7 +19,7 @@ async function checkBinaryExists(binary: string): Promise<{ exists: boolean; pat
 
 async function getBinaryVersion(binary: string): Promise<string | null> {
   try {
-    const proc = Bun.spawn([binary, "--version"], { stdout: "pipe", stderr: "pipe" })
+    const proc = spawnWithWindowsHide([binary, "--version"], { stdout: "pipe", stderr: "pipe" })
     const output = await new Response(proc.stdout).text()
     await proc.exited
     if (proc.exitCode === 0) {
@@ -140,4 +141,3 @@ export async function checkCommentChecker(): Promise<DependencyInfo> {
     path: resolvedPath,
   }
 }
-

src/cli/doctor/checks/model-resolution.test.ts

@@ -26,7 +26,7 @@ describe("model-resolution check", () => {
       // then: Should have category entries
       const visual = info.categories.find((c) => c.name === "visual-engineering")
       expect(visual).toBeDefined()
-      expect(visual!.requirement.fallbackChain[0]?.model).toBe("gemini-3-pro")
+      expect(visual!.requirement.fallbackChain[0]?.model).toBe("gemini-3.1-pro")
       expect(visual!.requirement.fallbackChain[0]?.providers).toContain("google")
     })
   })

src/cli/doctor/checks/system-binary.ts

@@ -1,6 +1,7 @@
 import { existsSync } from "node:fs"
 import { homedir } from "node:os"
 import { join } from "node:path"
+import { spawnWithWindowsHide } from "../../../shared/spawn-with-windows-hide"
 
 import { OPENCODE_BINARIES } from "../constants"
 
@@ -110,7 +111,7 @@ export async function getOpenCodeVersion(
 ): Promise<string | null> {
   try {
     const command = buildVersionCommand(binaryPath, platform)
-    const processResult = Bun.spawn(command, { stdout: "pipe", stderr: "pipe" })
+    const processResult = spawnWithWindowsHide(command, { stdout: "pipe", stderr: "pipe" })
     const output = await new Response(processResult.stdout).text()
     await processResult.exited
 

src/cli/doctor/checks/tools-gh.ts

@@ -1,3 +1,5 @@
+import { spawnWithWindowsHide } from "../../../shared/spawn-with-windows-hide"
+
 export interface GhCliInfo {
   installed: boolean
   version: string | null
@@ -19,7 +21,7 @@ async function checkBinaryExists(binary: string): Promise<{ exists: boolean; pat
 
 async function getGhVersion(): Promise<string | null> {
   try {
-    const processResult = Bun.spawn(["gh", "--version"], { stdout: "pipe", stderr: "pipe" })
+    const processResult = spawnWithWindowsHide(["gh", "--version"], { stdout: "pipe", stderr: "pipe" })
     const output = await new Response(processResult.stdout).text()
     await processResult.exited
     if (processResult.exitCode !== 0) return null
@@ -38,7 +40,7 @@ async function getGhAuthStatus(): Promise<{
   error: string | null
 }> {
   try {
-    const processResult = Bun.spawn(["gh", "auth", "status"], {
+    const processResult = spawnWithWindowsHide(["gh", "auth", "status"], {
       stdout: "pipe",
       stderr: "pipe",
       env: { ...process.env, GH_NO_UPDATE_NOTIFIER: "1" },

src/cli/model-fallback-requirements.ts

@@ -17,14 +17,14 @@ export const CLI_AGENT_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
   },
   hephaestus: {
     fallbackChain: [
-      { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.3-codex", variant: "medium" },
+      { providers: ["openai", "opencode"], model: "gpt-5.3-codex", variant: "medium" },
     ],
-    requiresProvider: ["openai", "github-copilot", "opencode"],
+    requiresProvider: ["openai", "opencode"],
   },
   oracle: {
     fallbackChain: [
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2", variant: "high" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
     ],
   },
@@ -59,7 +59,7 @@ export const CLI_AGENT_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
       { providers: ["kimi-for-coding"], model: "k2p5" },
       { providers: ["opencode"], model: "kimi-k2.5-free" },
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2", variant: "high" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro" },
     ],
   },
   metis: {
@@ -68,14 +68,14 @@ export const CLI_AGENT_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
       { providers: ["kimi-for-coding"], model: "k2p5" },
       { providers: ["opencode"], model: "kimi-k2.5-free" },
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2", variant: "high" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
     ],
   },
   momus: {
     fallbackChain: [
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2", variant: "medium" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
     ],
   },
   atlas: {
@@ -84,7 +84,7 @@ export const CLI_AGENT_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
       { providers: ["opencode"], model: "kimi-k2.5-free" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-sonnet-4-5" },
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro" },
     ],
   },
 }
@@ -92,7 +92,7 @@ export const CLI_AGENT_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
 export const CLI_CATEGORY_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
   "visual-engineering": {
     fallbackChain: [
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
       { providers: ["zai-coding-plan"], model: "glm-5" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
       { providers: ["kimi-for-coding"], model: "k2p5" },
@@ -100,26 +100,26 @@ export const CLI_CATEGORY_MODEL_REQUIREMENTS: Record<string, ModelRequirement> =
   },
   ultrabrain: {
     fallbackChain: [
-      { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.3-codex", variant: "xhigh" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["openai", "opencode"], model: "gpt-5.3-codex", variant: "xhigh" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
     ],
   },
   deep: {
     fallbackChain: [
-      { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.3-codex", variant: "medium" },
+      { providers: ["openai", "opencode"], model: "gpt-5.3-codex", variant: "medium" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
     ],
     requiresModel: "gpt-5.3-codex",
   },
   artistry: {
     fallbackChain: [
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2" },
     ],
-    requiresModel: "gemini-3-pro",
+    requiresModel: "gemini-3.1-pro",
   },
   quick: {
     fallbackChain: [
@@ -131,7 +131,7 @@ export const CLI_CATEGORY_MODEL_REQUIREMENTS: Record<string, ModelRequirement> =
   "unspecified-low": {
     fallbackChain: [
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-sonnet-4-5" },
-      { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.3-codex", variant: "medium" },
+      { providers: ["openai", "opencode"], model: "gpt-5.3-codex", variant: "medium" },
       { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-flash" },
     ],
   },
@@ -139,7 +139,7 @@ export const CLI_CATEGORY_MODEL_REQUIREMENTS: Record<string, ModelRequirement> =
     fallbackChain: [
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2", variant: "high" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro" },
     ],
   },
   writing: {

src/cli/model-fallback.test.ts

@@ -421,16 +421,15 @@ describe("generateModelConfig", () => {
       expect(result.agents?.hephaestus?.variant).toBe("medium")
     })
 
-    test("Hephaestus is created when Copilot is available (github-copilot provider connected)", () => {
+    test("Hephaestus is NOT created when only Copilot is available (gpt-5.3-codex unavailable on github-copilot)", () => {
       // #given
       const config = createConfig({ hasCopilot: true })
 
       // #when
       const result = generateModelConfig(config)
 
-      // #then
-      expect(result.agents?.hephaestus?.model).toBe("github-copilot/gpt-5.3-codex")
-      expect(result.agents?.hephaestus?.variant).toBe("medium")
+      // #then - hephaestus is omitted because gpt-5.3-codex is not available on github-copilot
+      expect(result.agents?.hephaestus).toBeUndefined()
     })
 
     test("Hephaestus is created when OpenCode Zen is available (opencode provider connected)", () => {

src/cli/provider-model-id-transform.test.ts

@@ -40,16 +40,16 @@ describe("transformModelForProvider", () => {
 			expect(result).toBe("claude-haiku-4.5")
 		})
 
-		test("transforms gemini-3-pro to gemini-3-pro-preview", () => {
-			// #given github-copilot provider and gemini-3-pro model
+		test("transforms gemini-3.1-pro to gemini-3.1-pro-preview", () => {
+			// #given github-copilot provider and gemini-3.1-pro model
 			const provider = "github-copilot"
-			const model = "gemini-3-pro"
+			const model = "gemini-3.1-pro"
 
 			// #when transformModelForProvider is called
 			const result = transformModelForProvider(provider, model)
 
-			// #then should transform to gemini-3-pro-preview
-			expect(result).toBe("gemini-3-pro-preview")
+			// #then should transform to gemini-3.1-pro-preview
+			expect(result).toBe("gemini-3.1-pro-preview")
 		})
 
 		test("transforms gemini-3-flash to gemini-3-flash-preview", () => {
@@ -64,16 +64,16 @@ describe("transformModelForProvider", () => {
 			expect(result).toBe("gemini-3-flash-preview")
 		})
 
-		test("prevents double transformation of gemini-3-pro-preview", () => {
-			// #given github-copilot provider and gemini-3-pro-preview model (already transformed)
+		test("prevents double transformation of gemini-3.1-pro-preview", () => {
+			// #given github-copilot provider and gemini-3.1-pro-preview model (already transformed)
 			const provider = "github-copilot"
-			const model = "gemini-3-pro-preview"
+			const model = "gemini-3.1-pro-preview"
 
 			// #when transformModelForProvider is called
 			const result = transformModelForProvider(provider, model)
 
-			// #then should NOT become gemini-3-pro-preview-preview
-			expect(result).toBe("gemini-3-pro-preview")
+			// #then should NOT become gemini-3.1-pro-preview-preview
+			expect(result).toBe("gemini-3.1-pro-preview")
 		})
 
 		test("prevents double transformation of gemini-3-flash-preview", () => {
@@ -102,16 +102,16 @@ describe("transformModelForProvider", () => {
 			expect(result).toBe("gemini-3-flash-preview")
 		})
 
-		test("transforms gemini-3-pro to gemini-3-pro-preview", () => {
-			// #given google provider and gemini-3-pro model
+		test("transforms gemini-3.1-pro to gemini-3.1-pro-preview", () => {
+			// #given google provider and gemini-3.1-pro model
 			const provider = "google"
-			const model = "gemini-3-pro"
+			const model = "gemini-3.1-pro"
 
 			// #when transformModelForProvider is called
 			const result = transformModelForProvider(provider, model)
 
-			// #then should transform to gemini-3-pro-preview
-			expect(result).toBe("gemini-3-pro-preview")
+			// #then should transform to gemini-3.1-pro-preview
+			expect(result).toBe("gemini-3.1-pro-preview")
 		})
 
 		test("passes through other gemini models unchanged", () => {
@@ -138,16 +138,16 @@ describe("transformModelForProvider", () => {
 			expect(result).toBe("gemini-3-flash-preview")
 		})
 
-		test("prevents double transformation of gemini-3-pro-preview", () => {
-			// #given google provider and gemini-3-pro-preview model (already transformed)
+		test("prevents double transformation of gemini-3.1-pro-preview", () => {
+			// #given google provider and gemini-3.1-pro-preview model (already transformed)
 			const provider = "google"
-			const model = "gemini-3-pro-preview"
+			const model = "gemini-3.1-pro-preview"
 
 			// #when transformModelForProvider is called
 			const result = transformModelForProvider(provider, model)
 
-			// #then should NOT become gemini-3-pro-preview-preview
-			expect(result).toBe("gemini-3-pro-preview")
+			// #then should NOT become gemini-3.1-pro-preview-preview
+			expect(result).toBe("gemini-3.1-pro-preview")
 		})
 
 		test("does not transform claude models for google provider", () => {

src/cli/run/AGENTS.md

@@ -1,6 +1,6 @@
 # src/cli/run/ — Non-Interactive Session Launcher
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/cli/run/event-handlers.test.ts

@@ -1,4 +1,4 @@
-import { describe, it, expect, spyOn } from "bun:test"
+const { describe, it, expect, spyOn } = require("bun:test")
 import type { RunContext } from "./types"
 import { createEventState } from "./events"
 import { handleSessionStatus, handleMessagePartUpdated, handleMessageUpdated, handleTuiToast } from "./event-handlers"
@@ -235,9 +235,7 @@ describe("handleMessagePartUpdated", () => {
 
   it("prints completion metadata once when assistant text part is completed", () => {
     // given
-    const nowSpy = spyOn(Date, "now")
-    nowSpy.mockReturnValueOnce(1000)
-    nowSpy.mockReturnValueOnce(3400)
+    const nowSpy = spyOn(Date, "now").mockReturnValue(3400)
 
     const ctx = createMockContext("ses_main")
     const state = createEventState()
@@ -259,6 +257,7 @@ describe("handleMessagePartUpdated", () => {
       } as any,
       state,
     )
+    state.messageStartedAtById["msg_1"] = 1000
 
     // when
     handleMessagePartUpdated(

src/cli/run/event-state.ts

@@ -7,6 +7,8 @@ export interface EventState {
   currentTool: string | null
   /** Set to true when the main session has produced meaningful work (text, tool call, or tool result) */
   hasReceivedMeaningfulWork: boolean
+  /** Timestamp of the last received event (for watchdog detection) */
+  lastEventTimestamp: number
   /** Count of assistant messages for the main session */
   messageCount: number
   /** Current agent name from the latest assistant message */
@@ -54,6 +56,7 @@ export function createEventState(): EventState {
     lastPartText: "",
     currentTool: null,
     hasReceivedMeaningfulWork: false,
+    lastEventTimestamp: Date.now(),
     messageCount: 0,
     currentAgent: null,
     currentModel: null,

src/cli/run/event-stream-processor.ts

@@ -35,6 +35,9 @@ export async function processEvents(
         logEventVerbose(ctx, payload)
       }
 
+      // Update last event timestamp for watchdog detection
+      state.lastEventTimestamp = Date.now()
+
       handleSessionError(ctx, payload, state)
       handleSessionIdle(ctx, payload, state)
       handleSessionStatus(ctx, payload, state)

src/cli/run/integration.test.ts

@@ -3,6 +3,7 @@ import type { RunResult } from "./types"
 import { createJsonOutputManager } from "./json-output"
 import { resolveSession } from "./session-resolver"
 import { executeOnCompleteHook } from "./on-complete-hook"
+import * as spawnWithWindowsHideModule from "../../shared/spawn-with-windows-hide"
 import type { OpencodeClient } from "./types"
 import * as originalSdk from "@opencode-ai/sdk"
 import * as originalPortUtils from "../../shared/port-utils"
@@ -147,7 +148,7 @@ describe("integration: --session-id", () => {
     const result = resolveSession({ client: mockClient, sessionId, directory: "/test" })
 
     // then
-    await expect(result).rejects.toThrow(`Session not found: ${sessionId}`)
+    expect(result).rejects.toThrow(`Session not found: ${sessionId}`)
     expect(mockClient.session.get).toHaveBeenCalledWith({
       path: { id: sessionId },
       query: { directory: "/test" },
@@ -161,10 +162,13 @@ describe("integration: --on-complete", () => {
 
   beforeEach(() => {
     spyOn(console, "error").mockImplementation(() => {})
-    spawnSpy = spyOn(Bun, "spawn").mockReturnValue({
+    spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue({
       exited: Promise.resolve(0),
       exitCode: 0,
-    } as unknown as ReturnType<typeof Bun.spawn>)
+      stdout: undefined,
+      stderr: undefined,
+      kill: () => {},
+    } satisfies ReturnType<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>)
   })
 
   afterEach(() => {
@@ -186,7 +190,7 @@ describe("integration: --on-complete", () => {
 
     // then
     expect(spawnSpy).toHaveBeenCalledTimes(1)
-    const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof Bun.spawn>
+    const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
     expect(options?.env?.SESSION_ID).toBe("session-123")
     expect(options?.env?.EXIT_CODE).toBe("0")
     expect(options?.env?.DURATION_MS).toBe("5000")
@@ -208,10 +212,13 @@ describe("integration: option combinations", () => {
     spyOn(console, "error").mockImplementation(() => {})
     mockStdout = createMockWriteStream()
     mockStderr = createMockWriteStream()
-    spawnSpy = spyOn(Bun, "spawn").mockReturnValue({
+    spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue({
       exited: Promise.resolve(0),
       exitCode: 0,
-    } as unknown as ReturnType<typeof Bun.spawn>)
+      stdout: undefined,
+      stderr: undefined,
+      kill: () => {},
+    } satisfies ReturnType<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>)
   })
 
   afterEach(() => {
@@ -249,9 +256,9 @@ describe("integration: option combinations", () => {
     const emitted = mockStdout.writes[0]!
     expect(() => JSON.parse(emitted)).not.toThrow()
     expect(spawnSpy).toHaveBeenCalledTimes(1)
-    const [args] = spawnSpy.mock.calls[0] as Parameters<typeof Bun.spawn>
+    const [args] = spawnSpy.mock.calls[0] as Parameters<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
     expect(args).toEqual(["sh", "-c", "echo done"])
-    const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof Bun.spawn>
+    const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
     expect(options?.env?.SESSION_ID).toBe("session-123")
     expect(options?.env?.EXIT_CODE).toBe("0")
     expect(options?.env?.DURATION_MS).toBe("5000")

src/cli/run/on-complete-hook.test.ts

@@ -1,4 +1,5 @@
 import { describe, it, expect, spyOn, beforeEach, afterEach } from "bun:test"
+import * as spawnWithWindowsHideModule from "../../shared/spawn-with-windows-hide"
 import { executeOnCompleteHook } from "./on-complete-hook"
 
 describe("executeOnCompleteHook", () => {
@@ -6,7 +7,10 @@ describe("executeOnCompleteHook", () => {
     return {
       exited: Promise.resolve(exitCode),
       exitCode,
-    } as unknown as ReturnType<typeof Bun.spawn>
+      stdout: undefined,
+      stderr: undefined,
+      kill: () => {},
+    } satisfies ReturnType<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
   }
 
   let consoleErrorSpy: ReturnType<typeof spyOn<typeof console, "error">>
@@ -21,7 +25,7 @@ describe("executeOnCompleteHook", () => {
 
   it("executes command with correct env vars", async () => {
     // given
-    const spawnSpy = spyOn(Bun, "spawn").mockReturnValue(createProc(0))
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue(createProc(0))
 
     try {
       // when
@@ -35,7 +39,7 @@ describe("executeOnCompleteHook", () => {
 
       // then
       expect(spawnSpy).toHaveBeenCalledTimes(1)
-      const [args, options] = spawnSpy.mock.calls[0] as Parameters<typeof Bun.spawn>
+      const [args, options] = spawnSpy.mock.calls[0] as Parameters<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
 
       expect(args).toEqual(["sh", "-c", "echo test"])
       expect(options?.env?.SESSION_ID).toBe("session-123")
@@ -51,7 +55,7 @@ describe("executeOnCompleteHook", () => {
 
   it("env var values are strings", async () => {
     // given
-    const spawnSpy = spyOn(Bun, "spawn").mockReturnValue(createProc(0))
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue(createProc(0))
 
     try {
       // when
@@ -64,7 +68,7 @@ describe("executeOnCompleteHook", () => {
       })
 
       // then
-      const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof Bun.spawn>
+      const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
 
       expect(options?.env?.EXIT_CODE).toBe("1")
       expect(options?.env?.EXIT_CODE).toBeTypeOf("string")
@@ -79,7 +83,7 @@ describe("executeOnCompleteHook", () => {
 
   it("empty command string is no-op", async () => {
     // given
-    const spawnSpy = spyOn(Bun, "spawn").mockReturnValue(createProc(0))
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue(createProc(0))
 
     try {
       // when
@@ -100,7 +104,7 @@ describe("executeOnCompleteHook", () => {
 
   it("whitespace-only command is no-op", async () => {
     // given
-    const spawnSpy = spyOn(Bun, "spawn").mockReturnValue(createProc(0))
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue(createProc(0))
 
     try {
       // when
@@ -121,11 +125,11 @@ describe("executeOnCompleteHook", () => {
 
   it("command failure logs warning but does not throw", async () => {
     // given
-    const spawnSpy = spyOn(Bun, "spawn").mockReturnValue(createProc(1))
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue(createProc(1))
 
     try {
       // when
-      await expect(
+      expect(
         executeOnCompleteHook({
           command: "false",
           sessionId: "session-123",
@@ -149,13 +153,13 @@ describe("executeOnCompleteHook", () => {
   it("spawn error logs warning but does not throw", async () => {
     // given
     const spawnError = new Error("Command not found")
-    const spawnSpy = spyOn(Bun, "spawn").mockImplementation(() => {
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockImplementation(() => {
       throw spawnError
     })
 
     try {
       // when
-      await expect(
+      expect(
         executeOnCompleteHook({
           command: "nonexistent-command",
           sessionId: "session-123",

src/cli/run/on-complete-hook.ts

@@ -1,4 +1,5 @@
 import pc from "picocolors"
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide"
 
 export async function executeOnCompleteHook(options: {
   command: string
@@ -17,7 +18,7 @@ export async function executeOnCompleteHook(options: {
   console.error(pc.dim(`Running on-complete hook: ${trimmedCommand}`))
 
   try {
-    const proc = Bun.spawn(["sh", "-c", trimmedCommand], {
+    const proc = spawnWithWindowsHide(["sh", "-c", trimmedCommand], {
       env: {
         ...process.env,
         SESSION_ID: sessionId,

src/cli/run/opencode-binary-resolver.ts

@@ -1,4 +1,5 @@
 import { delimiter, dirname, join } from "node:path"
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide"
 
 const OPENCODE_COMMANDS = ["opencode", "opencode-desktop"] as const
 const WINDOWS_SUFFIXES = ["", ".exe", ".cmd", ".bat", ".ps1"] as const
@@ -41,7 +42,7 @@ export function collectCandidateBinaryPaths(
 
 export async function canExecuteBinary(binaryPath: string): Promise<boolean> {
   try {
-    const proc = Bun.spawn([binaryPath, "--version"], {
+    const proc = spawnWithWindowsHide([binaryPath, "--version"], {
       stdout: "pipe",
       stderr: "pipe",
     })

src/cli/run/poll-for-completion.ts

@@ -8,11 +8,15 @@ const DEFAULT_POLL_INTERVAL_MS = 500
 const DEFAULT_REQUIRED_CONSECUTIVE = 1
 const ERROR_GRACE_CYCLES = 3
 const MIN_STABILIZATION_MS = 1_000
+const DEFAULT_EVENT_WATCHDOG_MS = 30_000 // 30 seconds
+const DEFAULT_SECONDARY_MEANINGFUL_WORK_TIMEOUT_MS = 60_000 // 60 seconds
 
 export interface PollOptions {
   pollIntervalMs?: number
   requiredConsecutive?: number
   minStabilizationMs?: number
+  eventWatchdogMs?: number
+  secondaryMeaningfulWorkTimeoutMs?: number
 }
 
 export async function pollForCompletion(
@@ -28,9 +32,15 @@ export async function pollForCompletion(
     options.minStabilizationMs ?? MIN_STABILIZATION_MS
   const minStabilizationMs =
     rawMinStabilizationMs > 0 ? rawMinStabilizationMs : MIN_STABILIZATION_MS
+  const eventWatchdogMs =
+    options.eventWatchdogMs ?? DEFAULT_EVENT_WATCHDOG_MS
+  const secondaryMeaningfulWorkTimeoutMs =
+    options.secondaryMeaningfulWorkTimeoutMs ??
+    DEFAULT_SECONDARY_MEANINGFUL_WORK_TIMEOUT_MS
   let consecutiveCompleteChecks = 0
   let errorCycleCount = 0
   let firstWorkTimestamp: number | null = null
+  let secondaryTimeoutChecked = false
   const pollStartTimestamp = Date.now()
 
   while (!abortController.signal.aborted) {
@@ -59,7 +69,37 @@ export async function pollForCompletion(
       errorCycleCount = 0
     }
 
-    const mainSessionStatus = await getMainSessionStatus(ctx)
+    // Watchdog: if no events received for N seconds, verify session status via API
+    let mainSessionStatus: "idle" | "busy" | "retry" | null = null
+    if (eventState.lastEventTimestamp !== null) {
+      const timeSinceLastEvent = Date.now() - eventState.lastEventTimestamp
+      if (timeSinceLastEvent > eventWatchdogMs) {
+        // Events stopped coming - verify actual session state
+        console.log(
+          pc.yellow(
+            `\n  No events for ${Math.round(
+              timeSinceLastEvent / 1000
+            )}s, verifying session status...`
+          )
+        )
+
+        // Force check session status directly
+        mainSessionStatus = await getMainSessionStatus(ctx)
+        if (mainSessionStatus === "idle") {
+          eventState.mainSessionIdle = true
+        } else if (mainSessionStatus === "busy" || mainSessionStatus === "retry") {
+          eventState.mainSessionIdle = false
+        }
+
+        // Reset timestamp to avoid repeated checks
+        eventState.lastEventTimestamp = Date.now()
+      }
+    }
+
+    // Only call getMainSessionStatus if watchdog didn't already check
+    if (mainSessionStatus === null) {
+      mainSessionStatus = await getMainSessionStatus(ctx)
+    }
     if (mainSessionStatus === "busy" || mainSessionStatus === "retry") {
       eventState.mainSessionIdle = false
     } else if (mainSessionStatus === "idle") {
@@ -81,6 +121,50 @@ export async function pollForCompletion(
         consecutiveCompleteChecks = 0
         continue
       }
+
+      // Secondary timeout: if we've been polling for reasonable time but haven't
+      // received meaningful work via events, check if there's active work via API
+      // Only check once to avoid unnecessary API calls every poll cycle
+      if (
+        Date.now() - pollStartTimestamp > secondaryMeaningfulWorkTimeoutMs &&
+        !secondaryTimeoutChecked
+      ) {
+        secondaryTimeoutChecked = true
+        // Check if session actually has pending work (children, todos, etc.)
+        const childrenRes = await ctx.client.session.children({
+          path: { id: ctx.sessionID },
+          query: { directory: ctx.directory },
+        })
+        const children = normalizeSDKResponse(childrenRes, [] as unknown[])
+        const todosRes = await ctx.client.session.todo({
+          path: { id: ctx.sessionID },
+          query: { directory: ctx.directory },
+        })
+        const todos = normalizeSDKResponse(todosRes, [] as unknown[])
+
+        const hasActiveChildren =
+          Array.isArray(children) && children.length > 0
+        const hasActiveTodos =
+          Array.isArray(todos) &&
+          todos.some(
+            (t: unknown) =>
+              (t as { status?: string })?.status !== "completed" &&
+              (t as { status?: string })?.status !== "cancelled"
+          )
+        const hasActiveWork = hasActiveChildren || hasActiveTodos
+
+        if (hasActiveWork) {
+          // Assume meaningful work is happening even without events
+          eventState.hasReceivedMeaningfulWork = true
+          console.log(
+            pc.yellow(
+              `\n  No meaningful work events for ${Math.round(
+                secondaryMeaningfulWorkTimeoutMs / 1000
+              )}s but session has active work - assuming in progress`
+            )
+          )
+        }
+      }
     } else {
       // Track when first meaningful work was received
       if (firstWorkTimestamp === null) {

src/config/AGENTS.md

@@ -1,6 +1,6 @@
 # src/config/ — Zod v4 Schema System
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/config/schema/agent-overrides.ts

@@ -59,7 +59,9 @@ export const AgentOverridesSchema = z.object({
   build: AgentOverrideConfigSchema.optional(),
   plan: AgentOverrideConfigSchema.optional(),
   sisyphus: AgentOverrideConfigSchema.optional(),
-  hephaestus: AgentOverrideConfigSchema.optional(),
+  hephaestus: AgentOverrideConfigSchema.extend({
+    allow_non_gpt_model: z.boolean().optional(),
+  }).optional(),
   "sisyphus-junior": AgentOverrideConfigSchema.optional(),
   "OpenCode-Builder": AgentOverrideConfigSchema.optional(),
   prometheus: AgentOverrideConfigSchema.optional(),

src/config/schema/categories.ts

@@ -20,6 +20,7 @@ export const CategoryConfigSchema = z.object({
   textVerbosity: z.enum(["low", "medium", "high"]).optional(),
   tools: z.record(z.string(), z.boolean()).optional(),
   prompt_append: z.string().optional(),
+  max_prompt_tokens: z.number().int().positive().optional(),
   /** Mark agent as unstable - forces background mode for monitoring. Auto-enabled for gemini/minimax models. */
   is_unstable_agent: z.boolean().optional(),
   /** Disable this category. Disabled categories are excluded from task delegation. */

src/config/schema/oh-my-opencode-config.ts

@@ -27,7 +27,7 @@ export const OhMyOpenCodeConfigSchema = z.object({
   /** Default agent name for `oh-my-opencode run` (env: OPENCODE_DEFAULT_AGENT) */
   default_run_agent: z.string().optional(),
   disabled_mcps: z.array(AnyMcpNameSchema).optional(),
-  disabled_agents: z.array(BuiltinAgentNameSchema).optional(),
+  disabled_agents: z.array(z.string()).optional(),
   disabled_skills: z.array(BuiltinSkillNameSchema).optional(),
   disabled_hooks: z.array(z.string()).optional(),
   disabled_commands: z.array(BuiltinCommandNameSchema).optional(),

src/features/AGENTS.md

@@ -1,6 +1,6 @@
 # src/features/ — 19 Feature Modules
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/features/background-agent/AGENTS.md

@@ -1,6 +1,6 @@
 # src/features/background-agent/ — Core Orchestration Engine
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/features/background-agent/concurrency.test.ts

@@ -34,7 +34,7 @@ describe("ConcurrencyManager.getConcurrencyLimit", () => {
   test("should return provider limit even when modelConcurrency exists but doesn't match", () => {
     // given
     const config: BackgroundTaskConfig = {
-      modelConcurrency: { "google/gemini-3-pro": 5 },
+      modelConcurrency: { "google/gemini-3.1-pro": 5 },
       providerConcurrency: { anthropic: 3 }
     }
     const manager = new ConcurrencyManager(config)
@@ -95,7 +95,7 @@ describe("ConcurrencyManager.getConcurrencyLimit", () => {
     // when
     const modelLimit = manager.getConcurrencyLimit("anthropic/claude-sonnet-4-6")
     const providerLimit = manager.getConcurrencyLimit("anthropic/claude-opus-4-6")
-    const defaultLimit = manager.getConcurrencyLimit("google/gemini-3-pro")
+    const defaultLimit = manager.getConcurrencyLimit("google/gemini-3.1-pro")
 
     // then
     expect(modelLimit).toBe(10)

src/features/background-agent/manager.test.ts

@@ -191,6 +191,10 @@ function getPendingByParent(manager: BackgroundManager): Map<string, Set<string>
   return (manager as unknown as { pendingByParent: Map<string, Set<string>> }).pendingByParent
 }
 
+function getPendingNotifications(manager: BackgroundManager): Map<string, string[]> {
+  return (manager as unknown as { pendingNotifications: Map<string, string[]> }).pendingNotifications
+}
+
 function getCompletionTimers(manager: BackgroundManager): Map<string, ReturnType<typeof setTimeout>> {
   return (manager as unknown as { completionTimers: Map<string, ReturnType<typeof setTimeout>> }).completionTimers
 }
@@ -1057,6 +1061,49 @@ describe("BackgroundManager.notifyParentSession - aborted parent", () => {
 
     manager.shutdown()
   })
+
+  test("should queue notification when promptAsync aborts while parent is idle", async () => {
+    //#given
+    const promptMock = async () => {
+      const error = new Error("Request aborted while waiting for input")
+      error.name = "MessageAbortedError"
+      throw error
+    }
+    const client = {
+      session: {
+        prompt: promptMock,
+        promptAsync: promptMock,
+        abort: async () => ({}),
+        messages: async () => ({ data: [] }),
+      },
+    }
+    const manager = new BackgroundManager({ client, directory: tmpdir() } as unknown as PluginInput)
+    const task: BackgroundTask = {
+      id: "task-aborted-idle-queue",
+      sessionID: "session-child",
+      parentSessionID: "session-parent",
+      parentMessageID: "msg-parent",
+      description: "task idle queue",
+      prompt: "test",
+      agent: "explore",
+      status: "completed",
+      startedAt: new Date(),
+      completedAt: new Date(),
+    }
+    getPendingByParent(manager).set("session-parent", new Set([task.id]))
+
+    //#when
+    await (manager as unknown as { notifyParentSession: (task: BackgroundTask) => Promise<void> })
+      .notifyParentSession(task)
+
+    //#then
+    const queuedNotifications = getPendingNotifications(manager).get("session-parent") ?? []
+    expect(queuedNotifications).toHaveLength(1)
+    expect(queuedNotifications[0]).toContain("<system-reminder>")
+    expect(queuedNotifications[0]).toContain("[ALL BACKGROUND TASKS COMPLETE]")
+
+    manager.shutdown()
+  })
 })
 
 describe("BackgroundManager.notifyParentSession - notifications toggle", () => {
@@ -1105,6 +1152,29 @@ describe("BackgroundManager.notifyParentSession - notifications toggle", () => {
   })
 })
 
+describe("BackgroundManager.injectPendingNotificationsIntoChatMessage", () => {
+  test("should prepend queued notifications to first text part and clear queue", () => {
+    // given
+    const manager = createBackgroundManager()
+    manager.queuePendingNotification("session-parent", "<system-reminder>queued-one</system-reminder>")
+    manager.queuePendingNotification("session-parent", "<system-reminder>queued-two</system-reminder>")
+    const output = {
+      parts: [{ type: "text", text: "User prompt" }],
+    }
+
+    // when
+    manager.injectPendingNotificationsIntoChatMessage(output, "session-parent")
+
+    // then
+    expect(output.parts[0].text).toContain("<system-reminder>queued-one</system-reminder>")
+    expect(output.parts[0].text).toContain("<system-reminder>queued-two</system-reminder>")
+    expect(output.parts[0].text).toContain("User prompt")
+    expect(getPendingNotifications(manager).get("session-parent")).toBeUndefined()
+
+    manager.shutdown()
+  })
+})
+
 function buildNotificationPromptBody(
   task: BackgroundTask,
   currentMessage: CurrentMessage | null
@@ -2917,6 +2987,28 @@ describe("BackgroundManager.handleEvent - session.deleted cascade", () => {
     manager.shutdown()
     resetToastManager()
   })
+
+  test("should clean pending notifications for deleted sessions", () => {
+    //#given
+    const manager = createBackgroundManager()
+    const sessionID = "session-pending-notifications"
+
+    manager.queuePendingNotification(sessionID, "<system-reminder>queued</system-reminder>")
+    expect(getPendingNotifications(manager).get(sessionID)).toEqual([
+      "<system-reminder>queued</system-reminder>",
+    ])
+
+    //#when
+    manager.handleEvent({
+      type: "session.deleted",
+      properties: { info: { id: sessionID } },
+    })
+
+    //#then
+    expect(getPendingNotifications(manager).has(sessionID)).toBe(false)
+
+    manager.shutdown()
+  })
 })
 
 describe("BackgroundManager.handleEvent - session.error", () => {

src/features/background-agent/manager.ts

@@ -93,6 +93,7 @@ export class BackgroundManager {
 
   private tasks: Map<string, BackgroundTask>
   private notifications: Map<string, BackgroundTask[]>
+  private pendingNotifications: Map<string, string[]>
   private pendingByParent: Map<string, Set<string>>  // Track pending tasks per parent for batching
   private client: OpencodeClient
   private directory: string
@@ -125,6 +126,7 @@ export class BackgroundManager {
   ) {
     this.tasks = new Map()
     this.notifications = new Map()
+    this.pendingNotifications = new Map()
     this.pendingByParent = new Map()
     this.client = ctx.client
     this.directory = ctx.directory
@@ -828,6 +830,8 @@ export class BackgroundManager {
         tasksToCancel.set(descendant.id, descendant)
       }
 
+      this.pendingNotifications.delete(sessionID)
+
       if (tasksToCancel.size === 0) return
 
       for (const task of tasksToCancel.values()) {
@@ -864,6 +868,13 @@ export class BackgroundManager {
           subagentSessions.delete(task.sessionID)
         }
       }
+
+      for (const task of tasksToCancel.values()) {
+        if (task.parentSessionID) {
+          this.pendingNotifications.delete(task.parentSessionID)
+        }
+      }
+
       SessionCategoryRegistry.remove(sessionID)
     }
 
@@ -917,6 +928,32 @@ export class BackgroundManager {
     this.notifications.delete(sessionID)
   }
 
+  queuePendingNotification(sessionID: string | undefined, notification: string): void {
+    if (!sessionID) return
+    const existingNotifications = this.pendingNotifications.get(sessionID) ?? []
+    existingNotifications.push(notification)
+    this.pendingNotifications.set(sessionID, existingNotifications)
+  }
+
+  injectPendingNotificationsIntoChatMessage(output: { parts: Array<{ type: string; text?: string; [key: string]: unknown }> }, sessionID: string): void {
+    const pendingNotifications = this.pendingNotifications.get(sessionID)
+    if (!pendingNotifications || pendingNotifications.length === 0) {
+      return
+    }
+
+    this.pendingNotifications.delete(sessionID)
+    const notificationContent = pendingNotifications.join("\n\n")
+    const firstTextPartIndex = output.parts.findIndex((part) => part.type === "text")
+
+    if (firstTextPartIndex === -1) {
+      output.parts.unshift(createInternalAgentTextPart(notificationContent))
+      return
+    }
+
+    const originalText = output.parts[firstTextPartIndex].text ?? ""
+    output.parts[firstTextPartIndex].text = `${notificationContent}\n\n---\n\n${originalText}`
+  }
+
   /**
    * Validates that a session has actual assistant/tool output before marking complete.
    * Prevents premature completion when session.idle fires before agent responds.
@@ -1340,6 +1377,7 @@ Use \`background_output(task_id="${task.id}")\` to retrieve this result when rea
               taskId: task.id,
               parentSessionID: task.parentSessionID,
             })
+            this.queuePendingNotification(task.parentSessionID, notification)
           } else {
             log("[background-agent] Failed to send notification:", error)
           }
@@ -1568,6 +1606,7 @@ Use \`background_output(task_id="${task.id}")\` to retrieve this result when rea
     this.concurrencyManager.clear()
     this.tasks.clear()
     this.notifications.clear()
+    this.pendingNotifications.clear()
     this.pendingByParent.clear()
     this.notificationQueueByParent.clear()
     this.queuesByKey.clear()

src/features/boulder-state/storage.test.ts

@@ -269,6 +269,71 @@ describe("boulder-state", () => {
       expect(progress.isComplete).toBe(false)
     })
 
+    test("should count space-indented unchecked checkbox", () => {
+      // given - plan file with a two-space indented checkbox
+      const planPath = join(TEST_DIR, "space-indented-plan.md")
+      writeFileSync(planPath, `# Plan
+  - [ ] indented task
+`)
+
+      // when
+      const progress = getPlanProgress(planPath)
+
+      // then
+      expect(progress.total).toBe(1)
+      expect(progress.completed).toBe(0)
+      expect(progress.isComplete).toBe(false)
+    })
+
+    test("should count tab-indented unchecked checkbox", () => {
+      // given - plan file with a tab-indented checkbox
+      const planPath = join(TEST_DIR, "tab-indented-plan.md")
+      writeFileSync(planPath, `# Plan
+	- [ ] tab-indented task
+`)
+
+      // when
+      const progress = getPlanProgress(planPath)
+
+      // then
+      expect(progress.total).toBe(1)
+      expect(progress.completed).toBe(0)
+      expect(progress.isComplete).toBe(false)
+    })
+
+    test("should count mixed top-level checked and indented unchecked checkboxes", () => {
+      // given - plan file with checked top-level and unchecked indented task
+      const planPath = join(TEST_DIR, "mixed-indented-plan.md")
+      writeFileSync(planPath, `# Plan
+- [x] top-level completed task
+  - [ ] nested unchecked task
+`)
+
+      // when
+      const progress = getPlanProgress(planPath)
+
+      // then
+      expect(progress.total).toBe(2)
+      expect(progress.completed).toBe(1)
+      expect(progress.isComplete).toBe(false)
+    })
+
+    test("should count space-indented completed checkbox", () => {
+      // given - plan file with a two-space indented completed checkbox
+      const planPath = join(TEST_DIR, "indented-completed-plan.md")
+      writeFileSync(planPath, `# Plan
+  - [x] indented completed task
+`)
+
+      // when
+      const progress = getPlanProgress(planPath)
+
+      // then
+      expect(progress.total).toBe(1)
+      expect(progress.completed).toBe(1)
+      expect(progress.isComplete).toBe(true)
+    })
+
     test("should return isComplete true when all checked", () => {
       // given - all tasks completed
       const planPath = join(TEST_DIR, "complete-plan.md")

src/features/boulder-state/storage.ts

@@ -121,8 +121,8 @@ export function getPlanProgress(planPath: string): PlanProgress {
     const content = readFileSync(planPath, "utf-8")
     
     // Match markdown checkboxes: - [ ] or - [x] or - [X]
-    const uncheckedMatches = content.match(/^[-*]\s*\[\s*\]/gm) || []
-    const checkedMatches = content.match(/^[-*]\s*\[[xX]\]/gm) || []
+    const uncheckedMatches = content.match(/^\s*[-*]\s*\[\s*\]/gm) || []
+    const checkedMatches = content.match(/^\s*[-*]\s*\[[xX]\]/gm) || []
 
     const total = uncheckedMatches.length + checkedMatches.length
     const completed = checkedMatches.length
@@ -150,7 +150,8 @@ export function getPlanName(planPath: string): string {
 export function createBoulderState(
   planPath: string,
   sessionId: string,
-  agent?: string
+  agent?: string,
+  worktreePath?: string,
 ): BoulderState {
   return {
     active_plan: planPath,
@@ -158,5 +159,6 @@ export function createBoulderState(
     session_ids: [sessionId],
     plan_name: getPlanName(planPath),
     ...(agent !== undefined ? { agent } : {}),
+    ...(worktreePath !== undefined ? { worktree_path: worktreePath } : {}),
   }
 }

src/features/boulder-state/types.ts

@@ -16,6 +16,8 @@ export interface BoulderState {
   plan_name: string
   /** Agent type to use when resuming (e.g., 'atlas') */
   agent?: string
+  /** Absolute path to the git worktree root where work happens */
+  worktree_path?: string
 }
 
 export interface PlanProgress {

src/features/builtin-commands/templates/start-work.ts

@@ -1,5 +1,14 @@
 export const START_WORK_TEMPLATE = `You are starting a Sisyphus work session.
 
+## ARGUMENTS
+
+- \`/start-work [plan-name] [--worktree <path>]\`
+  - \`plan-name\` (optional): name or partial match of the plan to start
+  - \`--worktree <path>\` (optional): absolute path to an existing git worktree to work in
+    - If specified and valid: hook pre-sets worktree_path in boulder.json
+    - If specified but invalid: you must run \`git worktree add <path> <branch>\` first
+    - If omitted: you MUST choose or create a worktree (see Worktree Setup below)
+
 ## WHAT TO DO
 
 1. **Find available plans**: Search for Prometheus-generated plan files at \`.sisyphus/plans/\`
@@ -15,17 +24,24 @@ export const START_WORK_TEMPLATE = `You are starting a Sisyphus work session.
      - If ONE plan: auto-select it
      - If MULTIPLE plans: show list with timestamps, ask user to select
 
-4. **Create/Update boulder.json**:
+4. **Worktree Setup** (when \`worktree_path\` not already set in boulder.json):
+   1. \`git worktree list --porcelain\` — see available worktrees
+   2. Create: \`git worktree add <absolute-path> <branch-or-HEAD>\`
+   3. Update boulder.json to add \`"worktree_path": "<absolute-path>"\`
+   4. All work happens inside that worktree directory
+
+5. **Create/Update boulder.json**:
    \`\`\`json
    {
      "active_plan": "/absolute/path/to/plan.md",
      "started_at": "ISO_TIMESTAMP",
      "session_ids": ["session_id_1", "session_id_2"],
-     "plan_name": "plan-name"
+     "plan_name": "plan-name",
+     "worktree_path": "/absolute/path/to/git/worktree"
    }
    \`\`\`
 
-5. **Read the plan file** and start executing tasks according to atlas workflow
+6. **Read the plan file** and start executing tasks according to atlas workflow
 
 ## OUTPUT FORMAT
 
@@ -49,6 +65,7 @@ Resuming Work Session
 Active Plan: {plan-name}
 Progress: {completed}/{total} tasks
 Sessions: {count} (appending current session)
+Worktree: {worktree_path}
 
 Reading plan and continuing from last incomplete task...
 \`\`\`
@@ -60,6 +77,7 @@ Starting Work Session
 Plan: {plan-name}
 Session ID: {session_id}
 Started: {timestamp}
+Worktree: {worktree_path}
 
 Reading plan and beginning execution...
 \`\`\`
@@ -68,5 +86,6 @@ Reading plan and beginning execution...
 
 - The session_id is injected by the hook - use it directly
 - Always update boulder.json BEFORE starting work
+- Always set worktree_path in boulder.json before executing any tasks
 - Read the FULL plan file before delegating any tasks
 - Follow atlas delegation protocols (7-section format)`

src/features/claude-tasks/AGENTS.md

@@ -1,6 +1,6 @@
 # src/features/claude-tasks/ — Task Schema + Storage
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/features/mcp-oauth/AGENTS.md

@@ -1,6 +1,6 @@
 # src/features/mcp-oauth/ — OAuth 2.0 + PKCE + DCR for MCP Servers
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/features/opencode-skill-loader/AGENTS.md

@@ -1,6 +1,6 @@
 # src/features/opencode-skill-loader/ — 4-Scope Skill Discovery
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/features/task-toast-manager/manager.test.ts

@@ -162,7 +162,7 @@ describe("TaskToastManager", () => {
         description: "Task with category default model",
         agent: "sisyphus-junior",
         isBackground: false,
-        modelInfo: { model: "google/gemini-3-pro", type: "category-default" as const },
+        modelInfo: { model: "google/gemini-3.1-pro", type: "category-default" as const },
       }
 
       // when - addTask is called

src/features/tmux-subagent/AGENTS.md

@@ -1,6 +1,6 @@
 # src/features/tmux-subagent/ — Tmux Pane Management
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/hooks/AGENTS.md

@@ -1,14 +1,14 @@
-# src/hooks/ — 44 Lifecycle Hooks
+# src/hooks/ — 46 Lifecycle Hooks
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 
-44 hooks across 39 directories + 6 standalone files. Three-tier composition: Core(35) + Continuation(7) + Skill(2). All hooks follow `createXXXHook(deps) → HookFunction` factory pattern.
+46 hooks across 39 directories + 6 standalone files. Three-tier composition: Core(37) + Continuation(7) + Skill(2). All hooks follow `createXXXHook(deps) → HookFunction` factory pattern.
 
 ## HOOK TIERS
 
-### Tier 1: Session Hooks (22) — `create-session-hooks.ts`
+### Tier 1: Session Hooks (23) — `create-session-hooks.ts`
 ## STRUCTURE
 ```
 hooks/
@@ -70,11 +70,12 @@ hooks/
 | questionLabelTruncator | tool.execute.before | Truncate long question labels |
 | taskResumeInfo | chat.message | Inject task context on resume |
 | anthropicEffort | chat.params | Adjust reasoning effort level |
-| jsonErrorRecovery | tool.execute.after | Detect JSON parse errors, inject correction reminder |
-| sisyphusGptHephaestusReminder | chat.message | Toast warning when Sisyphus uses GPT model |
-| taskReminder | tool.execute.after | Remind about task tools after 10 turns without usage |
+| modelFallback | chat.params | Provider-level model fallback on errors |
+| noSisyphusGpt | chat.message | Block Sisyphus from using GPT models (toast warning) |
+| noHephaestusNonGpt | chat.message | Block Hephaestus from using non-GPT models |
+| runtimeFallback | event | Auto-switch models on API provider errors |
 
-### Tier 2: Tool Guard Hooks (9) — `create-tool-guard-hooks.ts`
+### Tier 2: Tool Guard Hooks (10) — `create-tool-guard-hooks.ts`
 
 | Hook | Event | Purpose |
 |------|-------|---------|
@@ -87,6 +88,7 @@ hooks/
 | tasksTodowriteDisabler | tool.execute.before | Disable TodoWrite when task system active |
 | writeExistingFileGuard | tool.execute.before | Require Read before Write on existing files |
 | hashlineReadEnhancer | tool.execute.after | Enhance Read output with line hashes |
+| jsonErrorRecovery | tool.execute.after | Detect JSON parse errors, inject correction reminder |
 
 ### Tier 3: Transform Hooks (4) — `create-transform-hooks.ts`
 

src/hooks/anthropic-context-window-limit-recovery/AGENTS.md

@@ -1,6 +1,6 @@
 # src/hooks/anthropic-context-window-limit-recovery/ — Multi-Strategy Context Recovery
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/hooks/anthropic-context-window-limit-recovery/state.ts

@@ -6,7 +6,7 @@ export function getOrCreateRetryState(
 ): RetryState {
   let state = autoCompactState.retryStateBySession.get(sessionID)
   if (!state) {
-    state = { attempt: 0, lastAttemptTime: 0 }
+    state = { attempt: 0, lastAttemptTime: 0, firstAttemptTime: 0 }
     autoCompactState.retryStateBySession.set(sessionID, state)
   }
   return state

src/hooks/anthropic-context-window-limit-recovery/summarize-retry-strategy.test.ts

@@ -0,0 +1,122 @@
+import { afterEach, beforeEach, describe, expect, mock, test } from "bun:test"
+import { runSummarizeRetryStrategy } from "./summarize-retry-strategy"
+import type { AutoCompactState, ParsedTokenLimitError, RetryState } from "./types"
+import type { OhMyOpenCodeConfig } from "../../config"
+
+type TimeoutCall = {
+  delay: number
+}
+
+function createAutoCompactState(): AutoCompactState {
+  return {
+    pendingCompact: new Set<string>(),
+    errorDataBySession: new Map<string, ParsedTokenLimitError>(),
+    retryStateBySession: new Map<string, RetryState>(),
+    truncateStateBySession: new Map(),
+    emptyContentAttemptBySession: new Map(),
+    compactionInProgress: new Set<string>(),
+  }
+}
+
+describe("runSummarizeRetryStrategy", () => {
+  const sessionID = "ses_retry_timeout"
+  const directory = "/tmp"
+  let autoCompactState: AutoCompactState
+
+  const summarizeMock = mock(() => Promise.resolve())
+  const showToastMock = mock(() => Promise.resolve())
+  const client = {
+    session: {
+      summarize: summarizeMock,
+      messages: mock(() => Promise.resolve({ data: [] })),
+      promptAsync: mock(() => Promise.resolve()),
+      revert: mock(() => Promise.resolve()),
+    },
+    tui: {
+      showToast: showToastMock,
+    },
+  }
+
+  beforeEach(() => {
+    autoCompactState = createAutoCompactState()
+    summarizeMock.mockReset()
+    showToastMock.mockReset()
+    summarizeMock.mockResolvedValue(undefined)
+    showToastMock.mockResolvedValue(undefined)
+  })
+
+  afterEach(() => {
+    globalThis.setTimeout = originalSetTimeout
+  })
+
+  const originalSetTimeout = globalThis.setTimeout
+
+  test("stops retries when total summarize timeout is exceeded", async () => {
+    //#given
+    autoCompactState.pendingCompact.add(sessionID)
+    autoCompactState.errorDataBySession.set(sessionID, {
+      currentTokens: 250000,
+      maxTokens: 200000,
+      errorType: "token_limit_exceeded",
+    })
+    autoCompactState.retryStateBySession.set(sessionID, {
+      attempt: 1,
+      lastAttemptTime: Date.now(),
+      firstAttemptTime: Date.now() - 130000,
+    })
+
+    //#when
+    await runSummarizeRetryStrategy({
+      sessionID,
+      msg: { providerID: "anthropic", modelID: "claude-sonnet-4-6" },
+      autoCompactState,
+      client: client as never,
+      directory,
+      pluginConfig: {} as OhMyOpenCodeConfig,
+    })
+
+    //#then
+    expect(summarizeMock).not.toHaveBeenCalled()
+    expect(autoCompactState.pendingCompact.has(sessionID)).toBe(false)
+    expect(autoCompactState.errorDataBySession.has(sessionID)).toBe(false)
+    expect(autoCompactState.retryStateBySession.has(sessionID)).toBe(false)
+    expect(showToastMock).toHaveBeenCalledWith(
+      expect.objectContaining({
+        body: expect.objectContaining({
+          title: "Auto Compact Timed Out",
+        }),
+      }),
+    )
+  })
+
+  test("caps retry delay by remaining total timeout window", async () => {
+    //#given
+    const timeoutCalls: TimeoutCall[] = []
+    globalThis.setTimeout = ((_: (...args: unknown[]) => void, delay?: number) => {
+      timeoutCalls.push({ delay: delay ?? 0 })
+      return 1 as unknown as ReturnType<typeof setTimeout>
+    }) as typeof setTimeout
+
+    autoCompactState.retryStateBySession.set(sessionID, {
+      attempt: 1,
+      lastAttemptTime: Date.now(),
+      firstAttemptTime: Date.now() - 119700,
+    })
+    summarizeMock.mockRejectedValueOnce(new Error("rate limited"))
+
+    //#when
+    await runSummarizeRetryStrategy({
+      sessionID,
+      msg: { providerID: "anthropic", modelID: "claude-sonnet-4-6" },
+      autoCompactState,
+      client: client as never,
+      directory,
+      pluginConfig: {} as OhMyOpenCodeConfig,
+    })
+
+    //#then
+    expect(timeoutCalls.length).toBe(1)
+    expect(timeoutCalls[0]!.delay).toBeGreaterThan(0)
+    expect(timeoutCalls[0]!.delay).toBeLessThanOrEqual(500)
+  })
+})

src/hooks/anthropic-context-window-limit-recovery/summarize-retry-strategy.ts

@@ -7,6 +7,8 @@ import { sanitizeEmptyMessagesBeforeSummarize } from "./message-builder"
 import { fixEmptyMessages } from "./empty-content-recovery"
 
 import { resolveCompactionModel } from "../shared/compaction-model-resolver"
+
+const SUMMARIZE_RETRY_TOTAL_TIMEOUT_MS = 120_000
 export async function runSummarizeRetryStrategy(params: {
   sessionID: string
   msg: Record<string, unknown>
@@ -18,6 +20,27 @@ export async function runSummarizeRetryStrategy(params: {
   messageIndex?: number
 }): Promise<void> {
   const retryState = getOrCreateRetryState(params.autoCompactState, params.sessionID)
+  const now = Date.now()
+
+  if (retryState.firstAttemptTime === 0) {
+    retryState.firstAttemptTime = now
+  }
+
+  const elapsedTimeMs = now - retryState.firstAttemptTime
+  if (elapsedTimeMs >= SUMMARIZE_RETRY_TOTAL_TIMEOUT_MS) {
+    clearSessionState(params.autoCompactState, params.sessionID)
+    await params.client.tui
+      .showToast({
+        body: {
+          title: "Auto Compact Timed Out",
+          message: "Compaction retries exceeded the timeout window. Please start a new session.",
+          variant: "error",
+          duration: 5000,
+        },
+      })
+      .catch(() => {})
+    return
+  }
 
   if (params.errorType?.includes("non-empty content")) {
     const attempt = getEmptyContentAttempt(params.autoCompactState, params.sessionID)
@@ -52,6 +75,7 @@ export async function runSummarizeRetryStrategy(params: {
 
   if (Date.now() - retryState.lastAttemptTime > 300000) {
     retryState.attempt = 0
+    retryState.firstAttemptTime = Date.now()
     params.autoCompactState.truncateStateBySession.delete(params.sessionID)
   }
 
@@ -92,10 +116,26 @@ export async function runSummarizeRetryStrategy(params: {
         })
         return
       } catch {
+        const remainingTimeMs = SUMMARIZE_RETRY_TOTAL_TIMEOUT_MS - (Date.now() - retryState.firstAttemptTime)
+        if (remainingTimeMs <= 0) {
+          clearSessionState(params.autoCompactState, params.sessionID)
+          await params.client.tui
+            .showToast({
+              body: {
+                title: "Auto Compact Timed Out",
+                message: "Compaction retries exceeded the timeout window. Please start a new session.",
+                variant: "error",
+                duration: 5000,
+              },
+            })
+            .catch(() => {})
+          return
+        }
+
         const delay =
           RETRY_CONFIG.initialDelayMs *
           Math.pow(RETRY_CONFIG.backoffFactor, retryState.attempt - 1)
-        const cappedDelay = Math.min(delay, RETRY_CONFIG.maxDelayMs)
+        const cappedDelay = Math.min(delay, RETRY_CONFIG.maxDelayMs, remainingTimeMs)
 
         setTimeout(() => {
           void runSummarizeRetryStrategy(params)

src/hooks/anthropic-context-window-limit-recovery/types.ts

@@ -11,6 +11,7 @@ export interface ParsedTokenLimitError {
 export interface RetryState {
   attempt: number
   lastAttemptTime: number
+  firstAttemptTime: number
 }
 
 export interface TruncateState {

src/hooks/atlas/AGENTS.md

@@ -1,6 +1,6 @@
 # src/hooks/atlas/ — Master Boulder Orchestrator
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/hooks/atlas/boulder-continuation-injector.ts

@@ -14,6 +14,7 @@ export async function injectBoulderContinuation(input: {
   remaining: number
   total: number
   agent?: string
+  worktreePath?: string
   backgroundManager?: BackgroundManager
   sessionState: SessionState
 }): Promise<void> {
@@ -24,6 +25,7 @@ export async function injectBoulderContinuation(input: {
     remaining,
     total,
     agent,
+    worktreePath,
     backgroundManager,
     sessionState,
   } = input
@@ -37,9 +39,11 @@ export async function injectBoulderContinuation(input: {
     return
   }
 
+  const worktreeContext = worktreePath ? `\n\n[Worktree: ${worktreePath}]` : ""
   const prompt =
     BOULDER_CONTINUATION_PROMPT.replace(/{PLAN_NAME}/g, planName) +
-    `\n\n[Status: ${total - remaining}/${total} completed, ${remaining} remaining]`
+    `\n\n[Status: ${total - remaining}/${total} completed, ${remaining} remaining]` +
+    worktreeContext
 
   try {
     log(`[${HOOK_NAME}] Injecting boulder continuation`, { sessionID, planName, remaining })
@@ -62,6 +66,7 @@ export async function injectBoulderContinuation(input: {
     log(`[${HOOK_NAME}] Boulder continuation injected`, { sessionID })
   } catch (err) {
     sessionState.promptFailureCount += 1
+    sessionState.lastFailureAt = Date.now()
     log(`[${HOOK_NAME}] Boulder continuation failed`, {
       sessionID,
       error: String(err),

src/hooks/atlas/event-handler.ts

@@ -10,6 +10,7 @@ import { getLastAgentFromSession } from "./session-last-agent"
 import type { AtlasHookOptions, SessionState } from "./types"
 
 const CONTINUATION_COOLDOWN_MS = 5000
+const FAILURE_BACKOFF_MS = 5 * 60 * 1000
 
 export function createAtlasEventHandler(input: {
   ctx: PluginInput
@@ -53,6 +54,7 @@ export function createAtlasEventHandler(input: {
       }
 
       const state = getState(sessionID)
+      const now = Date.now()
 
       if (state.lastEventWasAbortError) {
         state.lastEventWasAbortError = false
@@ -61,11 +63,18 @@ export function createAtlasEventHandler(input: {
       }
 
       if (state.promptFailureCount >= 2) {
-        log(`[${HOOK_NAME}] Skipped: continuation disabled after repeated prompt failures`, {
-          sessionID,
-          promptFailureCount: state.promptFailureCount,
-        })
-        return
+        const timeSinceLastFailure = state.lastFailureAt !== undefined ? now - state.lastFailureAt : Number.POSITIVE_INFINITY
+        if (timeSinceLastFailure < FAILURE_BACKOFF_MS) {
+          log(`[${HOOK_NAME}] Skipped: continuation in backoff after repeated failures`, {
+            sessionID,
+            promptFailureCount: state.promptFailureCount,
+            backoffRemaining: FAILURE_BACKOFF_MS - timeSinceLastFailure,
+          })
+          return
+        }
+
+        state.promptFailureCount = 0
+        state.lastFailureAt = undefined
       }
 
       const backgroundManager = options?.backgroundManager
@@ -92,17 +101,15 @@ export function createAtlasEventHandler(input: {
       const lastAgentKey = getAgentConfigKey(lastAgent ?? "")
       const requiredAgent = getAgentConfigKey(boulderState.agent ?? "atlas")
       const lastAgentMatchesRequired = lastAgentKey === requiredAgent
-      const boulderAgentWasNotExplicitlySet = boulderState.agent === undefined
       const boulderAgentDefaultsToAtlas = requiredAgent === "atlas"
       const lastAgentIsSisyphus = lastAgentKey === "sisyphus"
-      const allowSisyphusWhenDefaultAtlas = boulderAgentWasNotExplicitlySet && boulderAgentDefaultsToAtlas && lastAgentIsSisyphus
-      const agentMatches = lastAgentMatchesRequired || allowSisyphusWhenDefaultAtlas
+      const allowSisyphusForAtlasBoulder = boulderAgentDefaultsToAtlas && lastAgentIsSisyphus
+      const agentMatches = lastAgentMatchesRequired || allowSisyphusForAtlasBoulder
       if (!agentMatches) {
         log(`[${HOOK_NAME}] Skipped: last agent does not match boulder agent`, {
           sessionID,
           lastAgent: lastAgent ?? "unknown",
           requiredAgent,
-          boulderAgentExplicitlySet: boulderState.agent !== undefined,
         })
         return
       }
@@ -113,7 +120,6 @@ export function createAtlasEventHandler(input: {
         return
       }
 
-      const now = Date.now()
       if (state.lastContinuationInjectedAt && now - state.lastContinuationInjectedAt < CONTINUATION_COOLDOWN_MS) {
         log(`[${HOOK_NAME}] Skipped: continuation cooldown active`, {
           sessionID,
@@ -132,6 +138,7 @@ export function createAtlasEventHandler(input: {
           remaining,
           total: progress.total,
           agent: boulderState.agent,
+          worktreePath: boulderState.worktree_path,
           backgroundManager,
           sessionState: state,
         })

src/hooks/atlas/index.test.ts

@@ -933,8 +933,8 @@ describe("atlas hook", () => {
       expect(callArgs.body.parts[0].text).toContain("2 remaining")
     })
 
-     test("should not inject when last agent does not match boulder agent", async () => {
-       // given - boulder state with incomplete plan, but last agent does NOT match
+     test("should inject when last agent is sisyphus and boulder targets atlas explicitly", async () => {
+       // given - boulder explicitly set to atlas, but last agent is sisyphus (initial state after /start-work)
        const planPath = join(TEST_DIR, "test-plan.md")
        writeFileSync(planPath, "# Plan\n- [ ] Task 1\n- [ ] Task 2")
 
@@ -947,7 +947,7 @@ describe("atlas hook", () => {
        }
        writeBoulderState(TEST_DIR, state)
 
-       // given - last agent is NOT the boulder agent
+       // given - last agent is sisyphus (typical state right after /start-work)
        cleanupMessageStorage(MAIN_SESSION_ID)
        setupMessageStorage(MAIN_SESSION_ID, "sisyphus")
 
@@ -962,7 +962,39 @@ describe("atlas hook", () => {
          },
        })
 
-       // then - should NOT call prompt because agent does not match
+       // then - should call prompt because sisyphus is always allowed for atlas boulders
+       expect(mockInput._promptMock).toHaveBeenCalled()
+     })
+
+     test("should not inject when last agent is non-sisyphus and does not match boulder agent", async () => {
+       // given - boulder explicitly set to atlas, last agent is hephaestus (unrelated agent)
+       const planPath = join(TEST_DIR, "test-plan.md")
+       writeFileSync(planPath, "# Plan\n- [ ] Task 1\n- [ ] Task 2")
+
+       const state: BoulderState = {
+         active_plan: planPath,
+         started_at: "2026-01-02T10:00:00Z",
+         session_ids: [MAIN_SESSION_ID],
+         plan_name: "test-plan",
+         agent: "atlas",
+       }
+       writeBoulderState(TEST_DIR, state)
+
+       cleanupMessageStorage(MAIN_SESSION_ID)
+       setupMessageStorage(MAIN_SESSION_ID, "hephaestus")
+
+       const mockInput = createMockPluginInput()
+       const hook = createAtlasHook(mockInput)
+
+       // when
+       await hook.handler({
+         event: {
+           type: "session.idle",
+           properties: { sessionID: MAIN_SESSION_ID },
+         },
+       })
+
+       // then - should NOT call prompt because hephaestus does not match atlas or sisyphus
        expect(mockInput._promptMock).not.toHaveBeenCalled()
      })
 
@@ -1122,6 +1154,144 @@ describe("atlas hook", () => {
       }
     })
 
+    test("should keep skipping continuation during 5-minute backoff after 2 consecutive failures", async () => {
+      //#given - boulder state with incomplete plan and prompt always fails
+      const planPath = join(TEST_DIR, "test-plan.md")
+      writeFileSync(planPath, "# Plan\n- [ ] Task 1\n- [ ] Task 2")
+
+      const state: BoulderState = {
+        active_plan: planPath,
+        started_at: "2026-01-02T10:00:00Z",
+        session_ids: [MAIN_SESSION_ID],
+        plan_name: "test-plan",
+      }
+      writeBoulderState(TEST_DIR, state)
+
+      const promptMock = mock(() => Promise.reject(new Error("Bad Request")))
+      const mockInput = createMockPluginInput({ promptMock })
+      const hook = createAtlasHook(mockInput)
+
+      const originalDateNow = Date.now
+      let now = 0
+      Date.now = () => now
+
+      try {
+        //#when - third idle occurs inside 5-minute backoff window
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 60000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+
+        //#then - third attempt should still be skipped
+        expect(promptMock).toHaveBeenCalledTimes(2)
+      } finally {
+        Date.now = originalDateNow
+      }
+    })
+
+    test("should retry continuation after 5-minute backoff expires following 2 consecutive failures", async () => {
+      //#given - boulder state with incomplete plan and prompt always fails
+      const planPath = join(TEST_DIR, "test-plan.md")
+      writeFileSync(planPath, "# Plan\n- [ ] Task 1\n- [ ] Task 2")
+
+      const state: BoulderState = {
+        active_plan: planPath,
+        started_at: "2026-01-02T10:00:00Z",
+        session_ids: [MAIN_SESSION_ID],
+        plan_name: "test-plan",
+      }
+      writeBoulderState(TEST_DIR, state)
+
+      const promptMock = mock(() => Promise.reject(new Error("Bad Request")))
+      const mockInput = createMockPluginInput({ promptMock })
+      const hook = createAtlasHook(mockInput)
+
+      const originalDateNow = Date.now
+      let now = 0
+      Date.now = () => now
+
+      try {
+        //#when - third idle occurs after 5+ minutes
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 300000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+
+        //#then - third attempt should run after backoff expiration
+        expect(promptMock).toHaveBeenCalledTimes(3)
+      } finally {
+        Date.now = originalDateNow
+      }
+    })
+
+    test("should reset prompt failure counter after successful retry beyond backoff window", async () => {
+      //#given - boulder state with incomplete plan and success on first retry after backoff
+      const planPath = join(TEST_DIR, "test-plan.md")
+      writeFileSync(planPath, "# Plan\n- [ ] Task 1\n- [ ] Task 2")
+
+      const state: BoulderState = {
+        active_plan: planPath,
+        started_at: "2026-01-02T10:00:00Z",
+        session_ids: [MAIN_SESSION_ID],
+        plan_name: "test-plan",
+      }
+      writeBoulderState(TEST_DIR, state)
+
+      const promptMock = mock((): Promise<void> => Promise.reject(new Error("Bad Request")))
+      promptMock.mockImplementationOnce(() => Promise.reject(new Error("Bad Request")))
+      promptMock.mockImplementationOnce(() => Promise.reject(new Error("Bad Request")))
+      promptMock.mockImplementationOnce(() => Promise.resolve(undefined))
+      const mockInput = createMockPluginInput({ promptMock })
+      const hook = createAtlasHook(mockInput)
+
+      const originalDateNow = Date.now
+      let now = 0
+      Date.now = () => now
+
+      try {
+        //#when - fail twice, recover after backoff with success, then fail twice again
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 300000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+
+        //#then - success retry resets counter, so two additional failures are allowed before skip
+        expect(promptMock).toHaveBeenCalledTimes(5)
+      } finally {
+        Date.now = originalDateNow
+      }
+    })
+
     test("should reset continuation failure state on session.compacted event", async () => {
       //#given - boulder state with incomplete plan and prompt always fails
       const planPath = join(TEST_DIR, "test-plan.md")

src/hooks/atlas/types.ts

@@ -26,4 +26,5 @@ export interface SessionState {
   lastEventWasAbortError?: boolean
   lastContinuationInjectedAt?: number
   promptFailureCount: number
+  lastFailureAt?: number
 }

src/hooks/background-notification/hook.ts

@@ -9,6 +9,14 @@ interface EventInput {
   event: Event
 }
 
+interface ChatMessageInput {
+  sessionID: string
+}
+
+interface ChatMessageOutput {
+  parts: Array<{ type: string; text?: string; [key: string]: unknown }>
+}
+
 /**
  * Background notification hook - handles event routing to BackgroundManager.
  *
@@ -20,7 +28,15 @@ export function createBackgroundNotificationHook(manager: BackgroundManager) {
     manager.handleEvent(event)
   }
 
+  const chatMessageHandler = async (
+    input: ChatMessageInput,
+    output: ChatMessageOutput,
+  ): Promise<void> => {
+    manager.injectPendingNotificationsIntoChatMessage(output, input.sessionID)
+  }
+
   return {
+    "chat.message": chatMessageHandler,
     event: eventHandler,
   }
 }

src/hooks/claude-code-hooks/AGENTS.md

@@ -1,6 +1,6 @@
 # src/hooks/claude-code-hooks/ — Claude Code Compatibility
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW
 

src/hooks/interactive-bash-session/interactive-bash-session-tracker.ts

@@ -6,6 +6,7 @@ import {
 import { OMO_SESSION_PREFIX, buildSessionReminderMessage } from "./constants";
 import type { InteractiveBashSessionState } from "./types";
 import { subagentSessions } from "../../features/claude-code-session-state";
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide";
 
 type AbortSession = (args: { path: { id: string } }) => Promise<unknown>
 
@@ -19,7 +20,7 @@ async function killAllTrackedSessions(
 ): Promise<void> {
   for (const sessionName of state.tmuxSessions) {
     try {
-      const proc = Bun.spawn(["tmux", "kill-session", "-t", sessionName], {
+      const proc = spawnWithWindowsHide(["tmux", "kill-session", "-t", sessionName], {
         stdout: "ignore",
         stderr: "ignore",
       })

src/hooks/interactive-bash-session/state-manager.ts

@@ -1,6 +1,7 @@
 import type { InteractiveBashSessionState } from "./types";
 import { loadInteractiveBashSessionState } from "./storage";
 import { OMO_SESSION_PREFIX } from "./constants";
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide";
 
 export function getOrCreateState(sessionID: string, sessionStates: Map<string, InteractiveBashSessionState>): InteractiveBashSessionState {
   if (!sessionStates.has(sessionID)) {
@@ -24,7 +25,7 @@ export async function killAllTrackedSessions(
 ): Promise<void> {
   for (const sessionName of state.tmuxSessions) {
     try {
-      const proc = Bun.spawn(["tmux", "kill-session", "-t", sessionName], {
+      const proc = spawnWithWindowsHide(["tmux", "kill-session", "-t", sessionName], {
         stdout: "ignore",
         stderr: "ignore",
       });

src/hooks/keyword-detector/AGENTS.md

@@ -1,6 +1,6 @@
 # src/hooks/keyword-detector/ — Mode Keyword Injection
 
-**Generated:** 2026-02-21
+**Generated:** 2026-02-24
 
 ## OVERVIEW