Add API server with routes, services, and middleware

Express server with CRUD routes for agents, goals, issues, projects,
and activity log. Includes validation middleware, structured error
handling, request logging, and health check endpoint with tests.

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

server/src/routes/issues.ts

@@ -0,0 +1,52 @@
+import { Router } from "express";
+import type { Db } from "@paperclip/db";
+import { createIssueSchema, updateIssueSchema } from "@paperclip/shared";
+import { validate } from "../middleware/validate.js";
+import { issueService } from "../services/issues.js";
+
+export function issueRoutes(db: Db) {
+  const router = Router();
+  const svc = issueService(db);
+
+  router.get("/", async (_req, res) => {
+    const result = await svc.list();
+    res.json(result);
+  });
+
+  router.get("/:id", async (req, res) => {
+    const id = req.params.id as string;
+    const issue = await svc.getById(id);
+    if (!issue) {
+      res.status(404).json({ error: "Issue not found" });
+      return;
+    }
+    res.json(issue);
+  });
+
+  router.post("/", validate(createIssueSchema), async (req, res) => {
+    const issue = await svc.create(req.body);
+    res.status(201).json(issue);
+  });
+
+  router.patch("/:id", validate(updateIssueSchema), async (req, res) => {
+    const id = req.params.id as string;
+    const issue = await svc.update(id, req.body);
+    if (!issue) {
+      res.status(404).json({ error: "Issue not found" });
+      return;
+    }
+    res.json(issue);
+  });
+
+  router.delete("/:id", async (req, res) => {
+    const id = req.params.id as string;
+    const issue = await svc.remove(id);
+    if (!issue) {
+      res.status(404).json({ error: "Issue not found" });
+      return;
+    }
+    res.json(issue);
+  });
+
+  return router;
+}