opencode 対応

src/__tests__/globalConfig-defaults.test.ts

@@ -560,14 +560,14 @@ describe('loadGlobalConfig', () => {
       mkdirSync(taktDir, { recursive: true });
       writeFileSync(
         getGlobalConfigPath(),
-        'provider: opencode\nmodel: gpt-4o\n',
+        'provider: opencode\nmodel: opencode/big-pickle\n',
         'utf-8',
       );
 
       expect(() => loadGlobalConfig()).not.toThrow();
     });
 
-    it('should not throw when provider is opencode without a model', () => {
+    it('should throw when provider is opencode without a model', () => {
       const taktDir = join(testHomeDir, '.takt');
       mkdirSync(taktDir, { recursive: true });
       writeFileSync(
@@ -576,7 +576,19 @@ describe('loadGlobalConfig', () => {
         'utf-8',
       );
 
-      expect(() => loadGlobalConfig()).not.toThrow();
+      expect(() => loadGlobalConfig()).toThrow(/provider 'opencode' requires model in 'provider\/model' format/i);
+    });
+
+    it('should throw when provider is opencode and model is not provider/model format', () => {
+      const taktDir = join(testHomeDir, '.takt');
+      mkdirSync(taktDir, { recursive: true });
+      writeFileSync(
+        getGlobalConfigPath(),
+        'provider: opencode\nmodel: big-pickle\n',
+        'utf-8',
+      );
+
+      expect(() => loadGlobalConfig()).toThrow(/must be in 'provider\/model' format/i);
     });
   });
 });

src/__tests__/opencode-stream-handler.test.ts

@@ -32,28 +32,17 @@ describe('emitInit', () => {
   it('should emit init event with model and sessionId', () => {
     const onStream = vi.fn();
 
-    emitInit(onStream, 'gpt-4', 'session-123');
+    emitInit(onStream, 'opencode/big-pickle', 'session-123');
 
     expect(onStream).toHaveBeenCalledOnce();
     expect(onStream).toHaveBeenCalledWith({
       type: 'init',
-      data: { model: 'gpt-4', sessionId: 'session-123' },
-    });
-  });
-
-  it('should use default model name when model is undefined', () => {
-    const onStream = vi.fn();
-
-    emitInit(onStream, undefined, 'session-abc');
-
-    expect(onStream).toHaveBeenCalledWith({
-      type: 'init',
-      data: { model: 'opencode', sessionId: 'session-abc' },
+      data: { model: 'opencode/big-pickle', sessionId: 'session-123' },
     });
   });
 
   it('should not emit when onStream is undefined', () => {
-    emitInit(undefined, 'gpt-4', 'session-123');
+    emitInit(undefined, 'opencode/big-pickle', 'session-123');
   });
 });
 

src/__tests__/provider-model.test.ts

@@ -0,0 +1,23 @@
+import { describe, expect, it } from 'vitest';
+import { parseProviderModel } from '../shared/utils/providerModel.js';
+
+describe('parseProviderModel', () => {
+  it('should parse provider/model format', () => {
+    expect(parseProviderModel('opencode/big-pickle', 'model')).toEqual({
+      providerID: 'opencode',
+      modelID: 'big-pickle',
+    });
+  });
+
+  it('should reject empty string', () => {
+    expect(() => parseProviderModel('', 'model')).toThrow(/must not be empty/i);
+  });
+
+  it('should reject missing slash', () => {
+    expect(() => parseProviderModel('big-pickle', 'model')).toThrow(/provider\/model/i);
+  });
+
+  it('should reject multiple slashes', () => {
+    expect(() => parseProviderModel('a/b/c', 'model')).toThrow(/provider\/model/i);
+  });
+});

src/infra/config/global/globalConfig.ts

@@ -11,13 +11,22 @@ import { GlobalConfigSchema } from '../../../core/models/index.js';
 import type { GlobalConfig, DebugConfig, Language } from '../../../core/models/index.js';
 import { getGlobalConfigPath, getProjectConfigPath } from '../paths.js';
 import { DEFAULT_LANGUAGE } from '../../../shared/constants.js';
+import { parseProviderModel } from '../../../shared/utils/providerModel.js';
 
 /** Claude-specific model aliases that are not valid for other providers */
 const CLAUDE_MODEL_ALIASES = new Set(['opus', 'sonnet', 'haiku']);
 
 /** Validate that provider and model are compatible */
 function validateProviderModelCompatibility(provider: string | undefined, model: string | undefined): void {
-  if (!provider || !model) return;
+  if (!provider) return;
+
+  if (provider === 'opencode' && !model) {
+    throw new Error(
+      "Configuration error: provider 'opencode' requires model in 'provider/model' format (e.g. 'opencode/big-pickle')."
+    );
+  }
+
+  if (!model) return;
 
   if ((provider === 'codex' || provider === 'opencode') && CLAUDE_MODEL_ALIASES.has(model)) {
     throw new Error(
@@ -25,6 +34,10 @@ function validateProviderModelCompatibility(provider: string | undefined, model:
       `Either change the provider to 'claude' or specify a ${provider}-compatible model.`
     );
   }
+
+  if (provider === 'opencode') {
+    parseProviderModel(model, "Configuration error: model");
+  }
 }
 
 /** Create default global configuration (fresh instance each call) */

src/infra/opencode/OpenCodeStreamHandler.ts

@@ -93,14 +93,14 @@ export function createStreamTrackingState(): StreamTrackingState {
 
 export function emitInit(
   onStream: StreamCallback | undefined,
-  model: string | undefined,
+  model: string,
   sessionId: string,
 ): void {
   if (!onStream) return;
   onStream({
     type: 'init',
     data: {
-      model: model || 'opencode',
+      model,
       sessionId,
     },
   });

src/infra/opencode/client.ts

@@ -9,6 +9,7 @@ import { createOpencode } from '@opencode-ai/sdk/v2';
 import { createServer } from 'node:net';
 import type { AgentResponse } from '../../core/models/index.js';
 import { createLogger, getErrorMessage } from '../../shared/utils/index.js';
+import { parseProviderModel } from '../../shared/utils/providerModel.js';
 import { mapToOpenCodePermissionReply, type OpenCodeCallOptions } from './types.js';
 import {
   type OpenCodeStreamEvent,
@@ -154,13 +155,20 @@ export class OpenCodeClient {
           attempt,
         });
 
+        const parsedModel = parseProviderModel(options.model, 'OpenCode model');
+        const fullModel = `${parsedModel.providerID}/${parsedModel.modelID}`;
         const port = await getFreePort();
+        const config = {
+          model: fullModel,
+          small_model: fullModel,
+          ...(options.opencodeApiKey
+            ? { provider: { opencode: { options: { apiKey: options.opencodeApiKey } } } }
+            : {}),
+        };
         const { client, server } = await createOpencode({
           port,
           signal: streamAbortController.signal,
-          ...(options.opencodeApiKey
-            ? { config: { provider: { opencode: { options: { apiKey: options.opencodeApiKey } } } } }
-            : {}),
+          config,
         });
         serverClose = server.close;
 
@@ -179,7 +187,7 @@ export class OpenCodeClient {
         await client.session.promptAsync({
           sessionID: sessionId,
           directory: options.cwd,
-          ...(options.model ? { model: { providerID: 'opencode', modelID: options.model } } : {}),
+          model: parsedModel,
           parts: [{ type: 'text' as const, text: fullPrompt }],
         });
 

src/infra/opencode/types.ts

@@ -23,7 +23,7 @@ export interface OpenCodeCallOptions {
   cwd: string;
   abortSignal?: AbortSignal;
   sessionId?: string;
-  model?: string;
+  model: string;
   systemPrompt?: string;
   /** Permission mode for automatic permission handling */
   permissionMode?: PermissionMode;

src/infra/providers/opencode.ts

@@ -8,6 +8,10 @@ import type { AgentResponse } from '../../core/models/index.js';
 import type { AgentSetup, Provider, ProviderAgent, ProviderCallOptions } from './types.js';
 
 function toOpenCodeOptions(options: ProviderCallOptions): OpenCodeCallOptions {
+  if (!options.model) {
+    throw new Error("OpenCode provider requires model in 'provider/model' format (e.g. 'opencode/big-pickle').");
+  }
+
   return {
     cwd: options.cwd,
     abortSignal: options.abortSignal,

src/shared/utils/providerModel.ts

@@ -0,0 +1,21 @@
+/**
+ * Parse provider/model identifier.
+ *
+ * Expected format: "<provider>/<model>" with both segments non-empty.
+ */
+export function parseProviderModel(value: string, fieldName: string): { providerID: string; modelID: string } {
+  const trimmed = value.trim();
+  if (!trimmed) {
+    throw new Error(`${fieldName} must not be empty`);
+  }
+
+  const slashIndex = trimmed.indexOf('/');
+  if (slashIndex <= 0 || slashIndex === trimmed.length - 1 || trimmed.indexOf('/', slashIndex + 1) !== -1) {
+    throw new Error(`${fieldName} must be in 'provider/model' format: received '${value}'`);
+  }
+
+  return {
+    providerID: trimmed.slice(0, slashIndex),
+    modelID: trimmed.slice(slashIndex + 1),
+  };
+}