From 518dceac72e044a816ac64f9684c4c53b5c7aac9 Mon Sep 17 00:00:00 2001
From: justsisyphus <justsisyphus@users.noreply.github.com>
Date: Tue, 27 Jan 2026 08:38:11 +0900
Subject: [PATCH] Revert "feat(librarian): conditionally enable thinking based
 on model type"

This reverts commit f033b30549a396db90e148756130cddec1fcdb2b.
---
 src/agents/librarian.ts  |  9 +--------
 src/agents/types.ts      |  4 ----
 src/agents/utils.test.ts | 28 ----------------------------
 3 files changed, 1 insertion(+), 40 deletions(-)

diff --git a/src/agents/librarian.ts b/src/agents/librarian.ts
index 03ccaaf7b..b6ed33445 100644
--- a/src/agents/librarian.ts
+++ b/src/agents/librarian.ts
@@ -1,6 +1,5 @@
 import type { AgentConfig } from "@opencode-ai/sdk"
 import type { AgentPromptMetadata } from "./types"
-import { isGeminiModel } from "./types"
 import { createAgentToolRestrictions } from "../shared/permission-compat"
 
 export const LIBRARIAN_PROMPT_METADATA: AgentPromptMetadata = {
@@ -29,7 +28,7 @@ export function createLibrarianAgent(model: string): AgentConfig {
     "call_omo_agent",
   ])
 
-  const base = {
+  return {
     description:
       "Specialized codebase understanding agent for multi-repository analysis, searching remote codebases, retrieving official documentation, and finding implementation examples using GitHub CLI, Context7, and Web Search. MUST BE USED when users ask to look up code in remote repositories, explain library internals, or find usage examples in open source.",
     mode: "subagent" as const,
@@ -323,11 +322,5 @@ grep_app_searchGitHub(query: "useQuery")
 
 `,
   }
-
-  if (isGeminiModel(model)) {
-    return base
-  }
-
-  return { ...base, thinking: { type: "enabled", budgetTokens: 32000 } }
 }
 
diff --git a/src/agents/types.ts b/src/agents/types.ts
index 49543677f..5c21c3320 100644
--- a/src/agents/types.ts
+++ b/src/agents/types.ts
@@ -56,10 +56,6 @@ export function isGptModel(model: string): boolean {
   return model.startsWith("openai/") || model.startsWith("github-copilot/gpt-")
 }
 
-export function isGeminiModel(model: string): boolean {
-  return model.includes("gemini")
-}
-
 export type BuiltinAgentName =
   | "sisyphus"
   | "oracle"
diff --git a/src/agents/utils.test.ts b/src/agents/utils.test.ts
index c6290faf7..66a37a185 100644
--- a/src/agents/utils.test.ts
+++ b/src/agents/utils.test.ts
@@ -91,34 +91,6 @@ describe("createBuiltinAgents with model overrides", () => {
     expect(agents.oracle.textVerbosity).toBeUndefined()
   })
 
-  test("Librarian with Gemini model has no thinking", async () => {
-    // #given
-    const overrides = {
-      librarian: { model: "google/gemini-3-flash-preview" },
-    }
-
-    // #when
-    const agents = await createBuiltinAgents([], overrides, undefined, TEST_DEFAULT_MODEL)
-
-    // #then
-    expect(agents.librarian.model).toBe("google/gemini-3-flash-preview")
-    expect(agents.librarian.thinking).toBeUndefined()
-  })
-
-  test("Librarian with Claude model has thinking enabled", async () => {
-    // #given
-    const overrides = {
-      librarian: { model: "anthropic/claude-sonnet-4-5" },
-    }
-
-    // #when
-    const agents = await createBuiltinAgents([], overrides, undefined, TEST_DEFAULT_MODEL)
-
-    // #then
-    expect(agents.librarian.model).toBe("anthropic/claude-sonnet-4-5")
-    expect(agents.librarian.thinking).toEqual({ type: "enabled", budgetTokens: 32000 })
-  })
-
    test("non-model overrides are still applied after factory rebuild", async () => {
      // #given
      const overrides = {