fix(agent): harden permissions and startup readiness

src/runtime/opencode.ts

@@ -64,6 +64,64 @@ export class OpencodeRuntimeAdapter {
     return requireData(response.data, "global.health");
   }
 
+  async warmup(): Promise<void> {
+    const client = await this.ensureClient();
+    const healthStartedAt = Date.now();
+    const healthResponse = await client.global.health();
+    const health = requireData(healthResponse.data, "global.health");
+    logDevelopmentDebug("opencode warmup health check completed", {
+      elapsedMs: Math.max(0, Date.now() - healthStartedAt),
+      healthy: health.healthy,
+      version: health.version,
+    });
+
+    const sessionStartedAt = Date.now();
+    const sessionResponse = await client.session.create({
+      title: "tjwater-agent-warmup",
+    });
+    const session = requireData(sessionResponse.data, "session.create");
+    logDevelopmentDebug("opencode warmup session created", {
+      elapsedMs: Math.max(0, Date.now() - sessionStartedAt),
+      sessionId: session.id,
+    });
+
+    try {
+      const [provider, model] = config.OPENCODE_MODEL.split("/");
+      if (!provider || !model) {
+        throw new Error(
+          `invalid OPENCODE_MODEL; expected provider/model, received ${config.OPENCODE_MODEL}`,
+        );
+      }
+      const toolsStartedAt = Date.now();
+      const toolsResponse = await client.tool.list({ provider, model });
+      const tools = requireData(toolsResponse.data, "tool.list");
+      logDevelopmentDebug("opencode warmup tools loaded", {
+        elapsedMs: Math.max(0, Date.now() - toolsStartedAt),
+        model: config.OPENCODE_MODEL,
+        sessionId: session.id,
+        toolCount: tools.length,
+      });
+    } finally {
+      const cleanupStartedAt = Date.now();
+      let cleanupSucceeded = true;
+      await client.session.delete(
+        { sessionID: session.id },
+        { throwOnError: true },
+      ).catch((error) => {
+        cleanupSucceeded = false;
+        logger.warn(
+          { err: error, sessionId: session.id },
+          "failed to remove opencode warmup session",
+        );
+      });
+      logDevelopmentDebug("opencode warmup session cleanup completed", {
+        elapsedMs: Math.max(0, Date.now() - cleanupStartedAt),
+        sessionId: session.id,
+        succeeded: cleanupSucceeded,
+      });
+    }
+  }
+
   async createSession(title?: string) {
     const client = await this.ensureClient();
     const response = await client.session.create({

src/server.ts

@@ -75,6 +75,8 @@ app.get("/health", async (_req, res) => {
     const runtime = await opencodeRuntime.health();
     res.json({
       ok: true,
+      ready: true,
+      warmed_up: true,
       runtime,
       sessions: sessionBridge.count(),
     });
@@ -82,6 +84,8 @@ app.get("/health", async (_req, res) => {
     const detail = error instanceof Error ? error.message : String(error);
     res.status(503).json({
       ok: false,
+      ready: false,
+      warmed_up: true,
       message: "opencode runtime unavailable",
       detail,
       sessions: sessionBridge.count(),
@@ -148,23 +152,12 @@ const bootstrap = async () => {
     resultReferenceStore.initialize(),
     sessionTranscriptStore.initialize(),
   ]);
-  resultReferenceStore.startCleanupLoop();
 };
 
-await bootstrap();
-
-const server = app.listen(config.PORT, config.HOST, () => {
-  logger.info(
-    { host: config.HOST, port: config.PORT },
-    "TJWaterAgent listening",
-  );
-  void warmupOpencodeRuntime();
-});
-
 const warmupOpencodeRuntime = async () => {
   const startedAt = Date.now();
   try {
-    await opencodeRuntime.ensureClient();
+    await opencodeRuntime.warmup();
     logger.info(
       {
         elapsedMs: Math.max(0, Date.now() - startedAt),
@@ -181,9 +174,26 @@ const warmupOpencodeRuntime = async () => {
       },
       "failed to warm up opencode runtime",
     );
+    throw error;
   }
 };
 
+await bootstrap();
+await warmupOpencodeRuntime();
+resultReferenceStore.startCleanupLoop();
+
+const server = app.listen(config.PORT, config.HOST, () => {
+  logger.info(
+    {
+      host: config.HOST,
+      port: config.PORT,
+      ready: true,
+      warmedUp: true,
+    },
+    "TJWaterAgent listening",
+  );
+});
+
 const shutdown = async () => {
   logger.info("shutting down TJWaterAgent");
   server.close();