Implement agent runtime services and WebSocket realtime

Expand heartbeat service with full run executor, wakeup coordinator,
and adapter lifecycle. Add run-log-store for pluggable log persistence.
Add live-events service and WebSocket handler for realtime updates.
Expand agent and issue routes with runtime operations. Add ws dependency.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/index.ts

@@ -1,7 +1,11 @@
+import { createServer } from "node:http";
+import { resolve } from "node:path";
 import { createDb, createPgliteDb } from "@paperclip/db";
 import { createApp } from "./app.js";
 import { loadConfig } from "./config.js";
 import { logger } from "./middleware/logger.js";
+import { setupLiveEventsWebSocketServer } from "./realtime/live-events-ws.js";
+import { heartbeatService } from "./services/index.js";
 
 const config = loadConfig();
 
@@ -9,13 +13,33 @@ let db;
 if (config.databaseUrl) {
   db = createDb(config.databaseUrl);
 } else {
-  logger.info("No DATABASE_URL set — using embedded PGlite (./data/pglite)");
-  db = await createPgliteDb("./data/pglite");
+  const dataDir = resolve("./data/pglite");
+  logger.info(`No DATABASE_URL set — using embedded PGlite (${dataDir})`);
+  db = await createPgliteDb(dataDir);
   logger.info("PGlite ready, schema pushed");
 }
 
 const app = createApp(db as any, { serveUi: config.serveUi });
+const server = createServer(app);
 
-app.listen(config.port, () => {
+setupLiveEventsWebSocketServer(server, db as any);
+
+if (config.heartbeatSchedulerEnabled) {
+  const heartbeat = heartbeatService(db as any);
+  setInterval(() => {
+    void heartbeat
+      .tickTimers(new Date())
+      .then((result) => {
+        if (result.enqueued > 0) {
+          logger.info({ ...result }, "heartbeat timer tick enqueued runs");
+        }
+      })
+      .catch((err) => {
+        logger.error({ err }, "heartbeat timer tick failed");
+      });
+  }, config.heartbeatSchedulerIntervalMs);
+}
+
+server.listen(config.port, () => {
   logger.info(`Server listening on :${config.port}`);
 });