feat(ai): upgrade to Opus 4.7 with adaptive thinking (#325)

apps/worker/src/ai/claude-executor.ts

@@ -18,7 +18,7 @@ import { formatTimestamp } from '../utils/formatting.js';
 import { Timer } from '../utils/metrics.js';
 import { createAuditLogger } from './audit-logger.js';
 import { dispatchMessage } from './message-handlers.js';
-import { type ModelTier, resolveModel } from './models.js';
+import { type ModelTier, resolveModel, supportsAdaptiveThinking } from './models.js';
 import { detectExecutionContext, formatCompletionMessage, formatErrorOutput } from './output-formatters.js';
 import { createProgressManager } from './progress-manager.js';
 
@@ -217,6 +217,7 @@ export async function runClaudePrompt(
   // 4. Configure SDK options
   // Model override from providerConfig takes precedence over env-based resolveModel
   const model = providerConfig?.modelOverrides?.[modelTier] ?? resolveModel(modelTier);
+  const adaptiveThinking = supportsAdaptiveThinking(model) && process.env.CLAUDE_ADAPTIVE_THINKING !== 'false';
   const options = {
     model,
     maxTurns: 10_000,
@@ -225,6 +226,7 @@ export async function runClaudePrompt(
     allowDangerouslySkipPermissions: true,
     settingSources: ['user'] as ('user' | 'project' | 'local')[],
     env: sdkEnv,
+    ...(adaptiveThinking && { thinking: { type: 'adaptive' as const } }),
     ...(outputFormat && { outputFormat }),
   };
 

apps/worker/src/ai/message-handlers.ts

@@ -39,7 +39,10 @@ function extractMessageContent(message: AssistantMessage): string {
   const messageContent = message.message;
 
   if (Array.isArray(messageContent.content)) {
-    return messageContent.content.map((c: ContentBlock) => c.text || JSON.stringify(c)).join('\n');
+    return messageContent.content
+      .filter((c: ContentBlock) => c.type !== 'thinking' && c.type !== 'redacted_thinking')
+      .map((c: ContentBlock) => c.text || JSON.stringify(c))
+      .join('\n');
   }
 
   return String(messageContent.content);

apps/worker/src/ai/models.ts

@@ -21,7 +21,7 @@ export type ModelTier = 'small' | 'medium' | 'large';
 const DEFAULT_MODELS: Readonly<Record<ModelTier, string>> = {
   small: 'claude-haiku-4-5-20251001',
   medium: 'claude-sonnet-4-6',
-  large: 'claude-opus-4-6',
+  large: 'claude-opus-4-7',
 };
 
 /** Resolve a model tier to a concrete model ID. */
@@ -35,3 +35,8 @@ export function resolveModel(tier: ModelTier = 'medium'): string {
       return process.env.ANTHROPIC_MEDIUM_MODEL || DEFAULT_MODELS.medium;
   }
 }
+
+/** Whether a model supports adaptive thinking. Opus 4.6 and 4.7 only. */
+export function supportsAdaptiveThinking(model: string): boolean {
+  return /opus-4-[67]/.test(model);
+}

apps/worker/src/ai/types.ts

@@ -52,6 +52,8 @@ export interface ToolResultData {
 export interface ContentBlock {
   type?: string;
   text?: string;
+  thinking?: string;
+  data?: string;
 }
 
 export interface AssistantMessage {