feat(think-mode): inject thinking config with maxTokens for extended thinking

- Actually inject THINKING_CONFIGS into message (was defined but unused)
- Add maxTokens: 128000 for Anthropic (required for extended thinking)
- Add maxTokens: 64000 for Amazon Bedrock
- Track thinkingConfigInjected state

🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

src/hooks/think-mode/index.ts

@@ -1,6 +1,7 @@
 import { detectThinkKeyword, extractPromptText } from "./detector"
-import { getHighVariant, isAlreadyHighVariant } from "./switcher"
+import { getHighVariant, isAlreadyHighVariant, getThinkingConfig } from "./switcher"
 import type { ThinkModeState, ThinkModeInput } from "./types"
+import { log } from "../../shared"
 
 export * from "./detector"
 export * from "./switcher"
@@ -23,6 +24,7 @@ export function createThinkModeHook() {
       const state: ThinkModeState = {
         requested: false,
         modelSwitched: false,
+        thinkingConfigInjected: false,
       }
 
       if (!detectThinkKeyword(promptText)) {
@@ -47,17 +49,31 @@ export function createThinkModeHook() {
       }
 
       const highVariant = getHighVariant(currentModel.modelID)
+      const thinkingConfig = getThinkingConfig(currentModel.providerID, currentModel.modelID)
 
-      if (!highVariant) {
-        thinkModeState.set(sessionID, state)
-        return
-      }
-
+      if (highVariant) {
         output.message.model = {
           providerID: currentModel.providerID,
           modelID: highVariant,
         }
         state.modelSwitched = true
+        log("Think mode: model switched to high variant", {
+          sessionID,
+          from: currentModel.modelID,
+          to: highVariant,
+        })
+      }
+
+      if (thinkingConfig) {
+        Object.assign(output.message, thinkingConfig)
+        state.thinkingConfigInjected = true
+        log("Think mode: thinking config injected", {
+          sessionID,
+          provider: currentModel.providerID,
+          config: thinkingConfig,
+        })
+      }
+
       thinkModeState.set(sessionID, state)
     },
 

src/hooks/think-mode/switcher.ts

@@ -55,12 +55,14 @@ export const THINKING_CONFIGS: Record<string, Record<string, unknown>> = {
       type: "enabled",
       budgetTokens: 64000,
     },
+    maxTokens: 128000,
   },
   "amazon-bedrock": {
     reasoningConfig: {
       type: "enabled",
       budgetTokens: 32000,
     },
+    maxTokens: 64000,
   },
   google: {
     providerOptions: {

src/hooks/think-mode/types.ts

@@ -1,6 +1,7 @@
 export interface ThinkModeState {
   requested: boolean
   modelSwitched: boolean
+  thinkingConfigInjected: boolean
   providerID?: string
   modelID?: string
 }