diff --git a/ccw/tests/integration/status-routes.test.ts b/ccw/tests/integration/status-routes.test.ts
new file mode 100644
index 00000000..904c21ee
--- /dev/null
+++ b/ccw/tests/integration/status-routes.test.ts
@@ -0,0 +1,143 @@
+/**
+ * Integration tests for status routes.
+ *
+ * Notes:
+ * - Targets runtime implementation shipped in `ccw/dist`.
+ * - Exercises real HTTP request/response flow via a minimal test server.
+ */
+
+import { after, before, describe, it } from 'node:test';
+import assert from 'node:assert/strict';
+import http from 'node:http';
+
+const statusRoutesUrl = new URL('../../dist/core/routes/status-routes.js', import.meta.url);
+statusRoutesUrl.searchParams.set('t', String(Date.now()));
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+let mod: any;
+
+type JsonResponse = { status: number; json: any; text: string };
+
+async function requestJson(baseUrl: string, method: string, path: string): Promise<JsonResponse> {
+  const url = new URL(path, baseUrl);
+
+  return new Promise((resolve, reject) => {
+    const req = http.request(
+      url,
+      { method, headers: { Accept: 'application/json' } },
+      (res) => {
+        let body = '';
+        res.on('data', (chunk) => {
+          body += chunk.toString();
+        });
+        res.on('end', () => {
+          let json: any = null;
+          try {
+            json = body ? JSON.parse(body) : null;
+          } catch {
+            json = null;
+          }
+          resolve({ status: res.statusCode || 0, json, text: body });
+        });
+      },
+    );
+    req.on('error', reject);
+    req.end();
+  });
+}
+
+function handlePostRequest(req: http.IncomingMessage, res: http.ServerResponse, handler: (body: unknown) => Promise<any>): void {
+  let body = '';
+  req.on('data', (chunk) => {
+    body += chunk.toString();
+  });
+  req.on('end', async () => {
+    try {
+      const parsed = body ? JSON.parse(body) : {};
+      const result = await handler(parsed);
+
+      if (result?.error) {
+        res.writeHead(result.status || 500, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify({ error: result.error }));
+      } else {
+        res.writeHead(200, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify(result));
+      }
+    } catch (err: any) {
+      res.writeHead(500, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({ error: err?.message || String(err) }));
+    }
+  });
+}
+
+describe('status routes integration', async () => {
+  let server: http.Server | null = null;
+  let baseUrl = '';
+
+  before(async () => {
+    mod = await import(statusRoutesUrl.href);
+
+    server = http.createServer(async (req, res) => {
+      const url = new URL(req.url || '/', 'http://localhost');
+      const pathname = url.pathname;
+
+      const ctx = {
+        pathname,
+        url,
+        req,
+        res,
+        initialPath: process.cwd(),
+        handlePostRequest,
+        broadcastToClients() {},
+      };
+
+      try {
+        const handled = await mod.handleStatusRoutes(ctx);
+        if (!handled) {
+          res.writeHead(404, { 'Content-Type': 'application/json' });
+          res.end(JSON.stringify({ error: 'Not Found' }));
+        }
+      } catch (err: any) {
+        res.writeHead(500, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify({ error: err?.message || String(err) }));
+      }
+    });
+
+    await new Promise<void>((resolve) => {
+      server!.listen(0, () => resolve());
+    });
+
+    const addr = server.address();
+    const port = typeof addr === 'object' && addr ? addr.port : 0;
+    baseUrl = `http://127.0.0.1:${port}`;
+  });
+
+  after(async () => {
+    if (!server) return;
+    await new Promise<void>((resolve) => server!.close(() => resolve()));
+  });
+
+  it('GET /api/status/all returns aggregated status payload', async () => {
+    const res = await requestJson(baseUrl, 'GET', '/api/status/all');
+    assert.equal(res.status, 200);
+    assert.ok(res.json);
+
+    for (const key of ['cli', 'codexLens', 'semantic', 'ccwInstall', 'timestamp']) {
+      assert.ok(Object.prototype.hasOwnProperty.call(res.json, key), `missing key: ${key}`);
+    }
+
+    assert.equal(typeof res.json.timestamp, 'string');
+    assert.ok(res.json.timestamp.length > 0);
+
+    assert.equal(typeof res.json.ccwInstall.installed, 'boolean');
+    assert.equal(Array.isArray(res.json.ccwInstall.missingFiles), true);
+    assert.equal(typeof res.json.ccwInstall.installPath, 'string');
+  });
+
+  it('returns 404 for unknown routes', async () => {
+    const res = await requestJson(baseUrl, 'GET', '/api/status/unknown');
+    assert.equal(res.status, 404);
+    assert.ok(res.json?.error);
+  });
+});
+
diff --git a/ccw/tests/integration/system-routes.test.ts b/ccw/tests/integration/system-routes.test.ts
new file mode 100644
index 00000000..53db1969
--- /dev/null
+++ b/ccw/tests/integration/system-routes.test.ts
@@ -0,0 +1,241 @@
+/**
+ * Integration tests for system routes (data/health/recent-paths/switch-path/shutdown).
+ *
+ * Notes:
+ * - Targets runtime implementation shipped in `ccw/dist`.
+ * - Uses a temporary CCW data directory (CCW_DATA_DIR) to isolate recent-paths writes.
+ */
+
+import { after, before, describe, it, mock } from 'node:test';
+import assert from 'node:assert/strict';
+import http from 'node:http';
+import { mkdtempSync, rmSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+
+const CCW_HOME = mkdtempSync(join(tmpdir(), 'ccw-system-routes-home-'));
+const PROJECT_ROOT = mkdtempSync(join(tmpdir(), 'ccw-system-routes-project-'));
+
+const systemRoutesUrl = new URL('../../dist/core/routes/system-routes.js', import.meta.url);
+systemRoutesUrl.searchParams.set('t', String(Date.now()));
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+let mod: any;
+
+const originalEnv = { CCW_DATA_DIR: process.env.CCW_DATA_DIR };
+
+type JsonResponse = { status: number; json: any; text: string };
+
+async function requestJson(
+  baseUrl: string,
+  method: string,
+  path: string,
+  body?: unknown,
+): Promise<JsonResponse> {
+  const url = new URL(path, baseUrl);
+  const payload = body === undefined ? null : Buffer.from(JSON.stringify(body), 'utf8');
+
+  return new Promise((resolve, reject) => {
+    const req = http.request(
+      url,
+      {
+        method,
+        headers: {
+          Accept: 'application/json',
+          ...(payload
+            ? { 'Content-Type': 'application/json', 'Content-Length': String(payload.length) }
+            : {}),
+        },
+      },
+      (res) => {
+        let responseBody = '';
+        res.on('data', (chunk) => {
+          responseBody += chunk.toString();
+        });
+        res.on('end', () => {
+          let json: any = null;
+          try {
+            json = responseBody ? JSON.parse(responseBody) : null;
+          } catch {
+            json = null;
+          }
+          resolve({ status: res.statusCode || 0, json, text: responseBody });
+        });
+      },
+    );
+    req.on('error', reject);
+    if (payload) req.write(payload);
+    req.end();
+  });
+}
+
+function handlePostRequest(req: http.IncomingMessage, res: http.ServerResponse, handler: (body: unknown) => Promise<any>): void {
+  let body = '';
+  req.on('data', (chunk) => {
+    body += chunk.toString();
+  });
+  req.on('end', async () => {
+    try {
+      const parsed = body ? JSON.parse(body) : {};
+      const result = await handler(parsed);
+
+      if (result?.error) {
+        res.writeHead(result.status || 500, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify({ error: result.error }));
+      } else {
+        res.writeHead(200, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify(result));
+      }
+    } catch (err: any) {
+      res.writeHead(500, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({ error: err?.message || String(err) }));
+    }
+  });
+}
+
+async function createServer(initialPath: string): Promise<{ server: http.Server; baseUrl: string }> {
+  const server = http.createServer(async (req, res) => {
+    const url = new URL(req.url || '/', 'http://localhost');
+    const pathname = url.pathname;
+
+    const ctx = {
+      pathname,
+      url,
+      req,
+      res,
+      initialPath,
+      handlePostRequest,
+      broadcastToClients() {},
+      server,
+    };
+
+    try {
+      const handled = await mod.handleSystemRoutes(ctx);
+      if (!handled) {
+        res.writeHead(404, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify({ error: 'Not Found' }));
+      }
+    } catch (err: any) {
+      res.writeHead(500, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({ error: err?.message || String(err) }));
+    }
+  });
+
+  await new Promise<void>((resolve) => server.listen(0, () => resolve()));
+  const addr = server.address();
+  const port = typeof addr === 'object' && addr ? addr.port : 0;
+  return { server, baseUrl: `http://127.0.0.1:${port}` };
+}
+
+describe('system routes integration', async () => {
+  before(async () => {
+    process.env.CCW_DATA_DIR = CCW_HOME;
+    mock.method(console, 'log', () => {});
+    mock.method(console, 'error', () => {});
+    mod = await import(systemRoutesUrl.href);
+  });
+
+  after(() => {
+    mock.restoreAll();
+    process.env.CCW_DATA_DIR = originalEnv.CCW_DATA_DIR;
+    rmSync(CCW_HOME, { recursive: true, force: true });
+    rmSync(PROJECT_ROOT, { recursive: true, force: true });
+  });
+
+  it('GET /api/health returns ok payload', async () => {
+    const { server, baseUrl } = await createServer(PROJECT_ROOT);
+    try {
+      const res = await requestJson(baseUrl, 'GET', '/api/health');
+      assert.equal(res.status, 200);
+      assert.equal(res.json.status, 'ok');
+      assert.equal(typeof res.json.timestamp, 'number');
+    } finally {
+      await new Promise<void>((resolve) => server.close(() => resolve()));
+    }
+  });
+
+  it('GET /api/data returns default workflow data when .workflow is missing', async () => {
+    const { server, baseUrl } = await createServer(PROJECT_ROOT);
+    try {
+      const res = await requestJson(baseUrl, 'GET', `/api/data?path=${encodeURIComponent(PROJECT_ROOT)}`);
+      assert.equal(res.status, 200);
+
+      assert.equal(Array.isArray(res.json.activeSessions), true);
+      assert.equal(Array.isArray(res.json.archivedSessions), true);
+      assert.ok(typeof res.json.generatedAt === 'string' && res.json.generatedAt.length > 0);
+      assert.ok(typeof res.json.projectPath === 'string' && res.json.projectPath.length > 0);
+      assert.equal(Array.isArray(res.json.recentPaths), true);
+    } finally {
+      await new Promise<void>((resolve) => server.close(() => resolve()));
+    }
+  });
+
+  it('GET /api/recent-paths returns an array and /api/switch-path validates paths', async () => {
+    const { server, baseUrl } = await createServer(PROJECT_ROOT);
+    try {
+      const recent = await requestJson(baseUrl, 'GET', '/api/recent-paths');
+      assert.equal(recent.status, 200);
+      assert.equal(Array.isArray(recent.json.paths), true);
+
+      const missing = await requestJson(baseUrl, 'GET', '/api/switch-path');
+      assert.equal(missing.status, 400);
+      assert.ok(String(missing.json.error).includes('Path is required'));
+
+      const invalidPath = join(PROJECT_ROOT, 'does-not-exist');
+      const invalid = await requestJson(baseUrl, 'GET', `/api/switch-path?path=${encodeURIComponent(invalidPath)}`);
+      assert.equal(invalid.status, 404);
+      assert.ok(String(invalid.json.error).includes('Path does not exist'));
+
+      const ok = await requestJson(baseUrl, 'GET', `/api/switch-path?path=${encodeURIComponent(PROJECT_ROOT)}`);
+      assert.equal(ok.status, 200);
+      assert.equal(ok.json.success, true);
+      assert.ok(typeof ok.json.path === 'string' && ok.json.path.length > 0);
+      assert.equal(Array.isArray(ok.json.recentPaths), true);
+    } finally {
+      await new Promise<void>((resolve) => server.close(() => resolve()));
+    }
+  });
+
+  it('POST /api/shutdown responds and triggers graceful shutdown callbacks', async () => {
+    const { server, baseUrl } = await createServer(PROJECT_ROOT);
+
+    const exitCalls: Array<number | undefined> = [];
+    const originalSetTimeout = global.setTimeout;
+
+    // Avoid the 3s forced-exit timer from calling the real process.exit later.
+    (global as any).setTimeout = ((fn: any, delay: number, ...args: any[]) => {
+      if (delay === 3000) {
+        return originalSetTimeout(() => {}, 0);
+      }
+      return originalSetTimeout(fn, delay, ...args);
+    }) as any;
+
+    // Keep server open; mark that close was requested.
+    const originalClose = server.close.bind(server);
+    let closeRequested = 0;
+    (server as any).close = ((cb?: any) => {
+      closeRequested += 1;
+      if (cb) cb();
+      return server;
+    }) as any;
+
+    mock.method(process as any, 'exit', (code?: number) => {
+      exitCalls.push(code);
+    });
+
+    try {
+      const res = await requestJson(baseUrl, 'POST', '/api/shutdown', {});
+      assert.equal(res.status, 200);
+      assert.equal(res.json.status, 'shutting_down');
+
+      await new Promise((resolve) => setTimeout(resolve, 150));
+      assert.equal(closeRequested, 1);
+      assert.ok(exitCalls.includes(0));
+    } finally {
+      (global as any).setTimeout = originalSetTimeout;
+      (server as any).close = originalClose as any;
+      await new Promise<void>((resolve) => originalClose(() => resolve()));
+    }
+  });
+});
+