feat: add durable AgentOS slice execution

packages/agents/src/app.ts

@@ -2,6 +2,13 @@ import { parseAgentEnv } from "@code/env/agent";
 import { registerProvider } from "@flue/runtime";
 import type { Fetchable } from "@flue/runtime/routing";
 import { flue } from "@flue/runtime/routing";
+import { Hono } from "hono";
+
+import {
+  cancelAgentOsAttempt,
+  executeAgentOsAttempt,
+  runtimeRegistry,
+} from "./runtime/agent-os";
 
 const agentEnv = parseAgentEnv(process.env);
 
@@ -24,5 +31,35 @@ registerProvider(agentEnv.AGENT_MODEL_PROVIDER, {
   },
 });
 
-// flue() returns a complete Hono app; the Fetchable contract accepts it.
-export default flue() satisfies Fetchable;
+const app = new Hono();
+
+app.post("/internal/work-attempts/execute", async (context) => {
+  if (
+    context.req.header("authorization") !== `Bearer ${agentEnv.FLUE_DB_TOKEN}`
+  ) {
+    return context.json({ error: "Unauthorized" }, 401);
+  }
+  try {
+    return context.json(await executeAgentOsAttempt(await context.req.json()));
+  } catch (error) {
+    return context.json(
+      { error: error instanceof Error ? error.message : "Execution failed" },
+      500
+    );
+  }
+});
+
+app.post("/internal/work-attempts/:workspaceKey/cancel", async (context) => {
+  if (
+    context.req.header("authorization") !== `Bearer ${agentEnv.FLUE_DB_TOKEN}`
+  ) {
+    return context.json({ error: "Unauthorized" }, 401);
+  }
+  await cancelAgentOsAttempt(context.req.param("workspaceKey"));
+  return context.json({ cancelled: true });
+});
+
+app.all("/api/rivet/*", (context) => runtimeRegistry.handler(context.req.raw));
+app.route("/", flue());
+
+export default app satisfies Fetchable;