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/projects.ts

@@ -0,0 +1,52 @@
+import { Router } from "express";
+import type { Db } from "@paperclip/db";
+import { createProjectSchema, updateProjectSchema } from "@paperclip/shared";
+import { validate } from "../middleware/validate.js";
+import { projectService } from "../services/projects.js";
+
+export function projectRoutes(db: Db) {
+  const router = Router();
+  const svc = projectService(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 project = await svc.getById(id);
+    if (!project) {
+      res.status(404).json({ error: "Project not found" });
+      return;
+    }
+    res.json(project);
+  });
+
+  router.post("/", validate(createProjectSchema), async (req, res) => {
+    const project = await svc.create(req.body);
+    res.status(201).json(project);
+  });
+
+  router.patch("/:id", validate(updateProjectSchema), async (req, res) => {
+    const id = req.params.id as string;
+    const project = await svc.update(id, req.body);
+    if (!project) {
+      res.status(404).json({ error: "Project not found" });
+      return;
+    }
+    res.json(project);
+  });
+
+  router.delete("/:id", async (req, res) => {
+    const id = req.params.id as string;
+    const project = await svc.remove(id);
+    if (!project) {
+      res.status(404).json({ error: "Project not found" });
+      return;
+    }
+    res.json(project);
+  });
+
+  return router;
+}