feat(ai-code-review): 支援 Antigravity CLI

app/llm.js

@@ -23,13 +23,16 @@ function buildPrompt(systemPrompt, userContent) {
   ].join('\n');
 }
 
-function cliArgs(provider, model, promptFile = null) {
+function cliArgs(provider, model, promptFile = null, prompt = null) {
   if (provider === 'codex') {
     return ['exec', '--model', model, '--sandbox', 'read-only', '--ask-for-approval', 'never', '--skip-git-repo-check', '-'];
   }
   if (provider === 'claude') {
     return ['--print', '--model', model, '--permission-mode', 'dontAsk', '--no-session-persistence'];
   }
+  if (provider === 'antigravity') {
+    return ['-p', prompt, '--model', model];
+  }
   if (provider === 'opencode') {
     return ['run', '--model', model, '--format', 'default', '--file', promptFile, '請依附件 prompt.md 的完整內容執行，並只輸出要求的最終結果。'];
   }
@@ -50,7 +53,7 @@ async function runAssistantCLI({ provider, command, model }, prompt) {
     promptFile = join(tempDir, 'prompt.md');
     await writeFile(promptFile, prompt);
   }
-  const args = cliArgs(provider, model, promptFile);
+  const args = cliArgs(provider, model, promptFile, prompt);
   const maxBuffer = Number(process.env.AI_ASSISTANT_MAX_BUFFER || 20 * 1024 * 1024);
   const timeout = Number(process.env.AI_ASSISTANT_TIMEOUT_MS || 15 * 60 * 1000);
   try {
@@ -86,7 +89,7 @@ async function runAssistantCLI({ provider, command, model }, prompt) {
         if (code === 0) resolve(stdout.trim());
         else reject(Object.assign(new Error(`${provider} CLI exited with ${code ?? signal}`), { stdout, stderr }));
       });
-      child.stdin.end(provider === 'opencode' ? '' : prompt);
+      child.stdin.end(provider === 'opencode' || provider === 'antigravity' ? '' : prompt);
     });
   } finally {
     if (tempDir) await rm(tempDir, { recursive: true, force: true });
@@ -107,7 +110,7 @@ async function runAssistantCLI({ provider, command, model }, prompt) {
 export async function chat(systemPrompt, userContent) {
   const cfg = getLLMConfig();
   const { provider, command, model } = cfg;
-  if (!provider || !command) throw new Error('未偵測到可用 AI 助理 CLI，請安裝 codex、claude 或 opencode');
+  if (!provider || !command) throw new Error('未偵測到可用 AI 助理 CLI，請安裝 codex、claude、antigravity 或 opencode');
 
   line(`[LLM] provider=${provider} command=${command} model=${model}`);