fix(copilot): mark internal hook injections as agent-initiated

Apply the internal initiator marker to automated continuation, recovery, babysitter, stop-hook, and hook-message injections so Copilot attribution consistently sets x-initiator=agent for system-generated prompts.

src/features/hook-message-injector/injector.ts

@@ -5,7 +5,7 @@ import { MESSAGE_STORAGE, PART_STORAGE } from "./constants"
 import type { MessageMeta, OriginalMessageContext, TextPart, ToolPermission } from "./types"
 import { log } from "../../shared/logger"
 import { isSqliteBackend } from "../../shared/opencode-storage-detection"
-import { normalizeSDKResponse } from "../../shared"
+import { createInternalAgentTextPart, normalizeSDKResponse } from "../../shared"
 
 export interface StoredMessage {
   agent?: string
@@ -331,7 +331,7 @@ export function injectHookMessage(
   const textPart: TextPart = {
     id: partID,
     type: "text",
-    text: hookContent,
+    text: createInternalAgentTextPart(hookContent).text,
     synthetic: true,
     time: {
       start: now,

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

@@ -1,7 +1,7 @@
 import type { PluginInput } from "@opencode-ai/plugin"
 import type { BackgroundManager } from "../../features/background-agent"
 import { log } from "../../shared/logger"
-import { resolveInheritedPromptTools } from "../../shared"
+import { createInternalAgentTextPart, resolveInheritedPromptTools } from "../../shared"
 import { HOOK_NAME } from "./hook-name"
 import { BOULDER_CONTINUATION_PROMPT } from "./system-reminder-templates"
 import { resolveRecentPromptContextForSession } from "./recent-model-resolver"
@@ -53,7 +53,7 @@ export async function injectBoulderContinuation(input: {
         agent: agent ?? "atlas",
         ...(promptContext.model !== undefined ? { model: promptContext.model } : {}),
         ...(inheritedTools ? { tools: inheritedTools } : {}),
-        parts: [{ type: "text", text: prompt }],
+        parts: [createInternalAgentTextPart(prompt)],
       },
       query: { directory: ctx.directory },
     })

src/hooks/claude-code-hooks/handlers/session-event-handler.ts

@@ -3,7 +3,7 @@ import { loadClaudeHooksConfig } from "../config"
 import { loadPluginExtendedConfig } from "../config-loader"
 import { executeStopHooks, type StopContext } from "../stop"
 import type { PluginConfig } from "../types"
-import { isHookDisabled, log } from "../../../shared"
+import { createInternalAgentTextPart, isHookDisabled, log } from "../../../shared"
 import {
 	clearSessionHookState,
 	sessionErrorState,
@@ -94,7 +94,7 @@ export function createSessionEventHandler(ctx: PluginInput, config: PluginConfig
 					.prompt({
 						path: { id: sessionID },
 						body: {
-							parts: [{ type: "text", text: stopResult.injectPrompt }],
+							parts: [createInternalAgentTextPart(stopResult.injectPrompt)],
 						},
 						query: { directory: ctx.directory },
 					})

src/hooks/ralph-loop/continuation-prompt-injector.ts

@@ -3,7 +3,11 @@ import { log } from "../../shared/logger"
 import { findNearestMessageWithFields } from "../../features/hook-message-injector"
 import { getMessageDir } from "./message-storage-directory"
 import { withTimeout } from "./with-timeout"
-import { normalizeSDKResponse, resolveInheritedPromptTools } from "../../shared"
+import {
+	createInternalAgentTextPart,
+	normalizeSDKResponse,
+	resolveInheritedPromptTools,
+} from "../../shared"
 
 type MessageInfo = {
 	agent?: string
@@ -64,7 +68,7 @@ export async function injectContinuationPrompt(
 			...(agent !== undefined ? { agent } : {}),
 			...(model !== undefined ? { model } : {}),
 			...(inheritedTools ? { tools: inheritedTools } : {}),
-			parts: [{ type: "text", text: options.prompt }],
+			parts: [createInternalAgentTextPart(options.prompt)],
 		},
 		query: { directory: options.directory },
 	})

src/hooks/session-recovery/resume.test.ts

@@ -1,6 +1,7 @@
 declare const require: (name: string) => any
 const { describe, expect, test } = require("bun:test")
 import { extractResumeConfig, resumeSession } from "./resume"
+import { OMO_INTERNAL_INITIATOR_MARKER } from "../../shared/internal-initiator-marker"
 import type { MessageData } from "./types"
 
 describe("session-recovery resume", () => {
@@ -44,5 +45,8 @@ describe("session-recovery resume", () => {
     // then
     expect(ok).toBe(true)
     expect(promptBody?.tools).toEqual({ question: false, bash: true })
+    expect(Array.isArray(promptBody?.parts)).toBe(true)
+    const firstPart = (promptBody?.parts as Array<{ text?: string }>)?.[0]
+    expect(firstPart?.text).toContain(OMO_INTERNAL_INITIATOR_MARKER)
   })
 })

src/hooks/session-recovery/resume.ts

@@ -1,6 +1,6 @@
 import type { createOpencodeClient } from "@opencode-ai/sdk"
 import type { MessageData, ResumeConfig } from "./types"
-import { resolveInheritedPromptTools } from "../../shared"
+import { createInternalAgentTextPart, resolveInheritedPromptTools } from "../../shared"
 
 const RECOVERY_RESUME_TEXT = "[session recovered - continuing previous task]"
 
@@ -30,7 +30,7 @@ export async function resumeSession(client: Client, config: ResumeConfig): Promi
     await client.session.promptAsync({
       path: { id: config.sessionID },
       body: {
-        parts: [{ type: "text", text: RECOVERY_RESUME_TEXT }],
+        parts: [createInternalAgentTextPart(RECOVERY_RESUME_TEXT)],
         agent: config.agent,
         model: config.model,
         ...(inheritedTools ? { tools: inheritedTools } : {}),

src/hooks/todo-continuation-enforcer/continuation-injection.test.ts

@@ -2,18 +2,26 @@ declare const require: (name: string) => any
 const { describe, expect, test } = require("bun:test")
 
 import { injectContinuation } from "./continuation-injection"
+import { OMO_INTERNAL_INITIATOR_MARKER } from "../../shared/internal-initiator-marker"
 
 describe("injectContinuation", () => {
   test("inherits tools from resolved message info when reinjecting", async () => {
     // given
     let capturedTools: Record<string, boolean> | undefined
+    let capturedText: string | undefined
     const ctx = {
       directory: "/tmp/test",
       client: {
         session: {
           todo: async () => ({ data: [{ id: "1", content: "todo", status: "pending", priority: "high" }] }),
-          promptAsync: async (input: { body: { tools?: Record<string, boolean> } }) => {
+          promptAsync: async (input: {
+            body: {
+              tools?: Record<string, boolean>
+              parts?: Array<{ type: string; text: string }>
+            }
+          }) => {
             capturedTools = input.body.tools
+            capturedText = input.body.parts?.[0]?.text
             return {}
           },
         },
@@ -37,5 +45,6 @@ describe("injectContinuation", () => {
 
     // then
     expect(capturedTools).toEqual({ question: false, bash: true })
+    expect(capturedText).toContain(OMO_INTERNAL_INITIATOR_MARKER)
   })
 })

src/hooks/todo-continuation-enforcer/continuation-injection.ts

@@ -1,7 +1,11 @@
 import type { PluginInput } from "@opencode-ai/plugin"
 
 import type { BackgroundManager } from "../../features/background-agent"
-import { normalizeSDKResponse, resolveInheritedPromptTools } from "../../shared"
+import {
+  createInternalAgentTextPart,
+  normalizeSDKResponse,
+  resolveInheritedPromptTools,
+} from "../../shared"
 import {
   findNearestMessageWithFields,
   findNearestMessageWithFieldsFromSDK,
@@ -151,7 +155,7 @@ ${todoList}`
         agent: agentName,
         ...(model !== undefined ? { model } : {}),
         ...(inheritedTools ? { tools: inheritedTools } : {}),
-        parts: [{ type: "text", text: prompt }],
+        parts: [createInternalAgentTextPart(prompt)],
       },
       query: { directory: ctx.directory },
     })

src/hooks/unstable-agent-babysitter/index.test.ts

@@ -1,6 +1,7 @@
 import { afterEach, describe, expect, test } from "bun:test"
 import { _resetForTesting, setMainSession } from "../../features/claude-code-session-state"
 import type { BackgroundTask } from "../../features/background-agent"
+import { OMO_INTERNAL_INITIATOR_MARKER } from "../../shared/internal-initiator-marker"
 import { createUnstableAgentBabysitterHook } from "./index"
 
 const projectDir = process.cwd()
@@ -93,6 +94,7 @@ describe("unstable-agent-babysitter hook", () => {
     expect(text).toContain("background_output")
     expect(text).toContain("background_cancel")
     expect(text).toContain("deep thought")
+    expect(text).toContain(OMO_INTERNAL_INITIATOR_MARKER)
   })
 
   test("fires reminder for hung minimax task", async () => {
@@ -128,6 +130,7 @@ describe("unstable-agent-babysitter hook", () => {
     expect(text).toContain("background_output")
     expect(text).toContain("background_cancel")
     expect(text).toContain("minimax thought")
+    expect(text).toContain(OMO_INTERNAL_INITIATOR_MARKER)
   })
 
   test("does not remind stable model tasks", async () => {

src/hooks/unstable-agent-babysitter/unstable-agent-babysitter-hook.ts

@@ -1,7 +1,7 @@
 import type { BackgroundManager } from "../../features/background-agent"
 import { getMainSessionID, getSessionAgent } from "../../features/claude-code-session-state"
 import { log } from "../../shared/logger"
-import { resolveInheritedPromptTools } from "../../shared"
+import { createInternalAgentTextPart, resolveInheritedPromptTools } from "../../shared"
 import {
   buildReminder,
   extractMessages,
@@ -158,7 +158,7 @@ export function createUnstableAgentBabysitterHook(ctx: BabysitterContext, option
             ...(agent ? { agent } : {}),
             ...(model ? { model } : {}),
             ...(tools ? { tools } : {}),
-            parts: [{ type: "text", text: reminder }],
+            parts: [createInternalAgentTextPart(reminder)],
           },
           query: { directory: ctx.directory },
         })