feat: add 52 per-tool SEO landing pages and public changelog (#145)

* feat: add 52 per-tool SEO landing pages and public changelog

- Create individual landing pages for all 52 tools at /tools/{slug}
  with search-intent title tags, unique FAQs (156 Q&As), per-tool
  features, and rich schema markup (BreadcrumbList, WebApplication,
  HowTo, FAQPage)
- Replace static sitemap.xml with dynamic generation including all
  tool URLs
- Refactor bento grid to import from @snapotter/shared (eliminates
  330 lines of duplicated tool data) and link cards to tool pages
- Add @snapotter/shared as workspace dependency to landing site
- Add public changelog page to docs site with curated release notes
  from v1.8 through v1.17
- Update docs nav and sidebar with changelog link

* feat: enhance SEO and performance with updated metadata, robots.txt, and llms.txt

apps/api/src/lib/feature-status.ts

@@ -134,7 +134,25 @@ interface LockData {
   startedAt: string;
 }
 
+const LOCK_STALE_MS = 45 * 60 * 1000;
+
 export function acquireInstallLock(bundleId: string): boolean {
+  // If a lock exists, check its age. OOM-killed processes or crashes
+  // may leave a stale lock file behind; treat anything older than 45
+  // minutes as abandoned.
+  if (existsSync(LOCK_PATH)) {
+    try {
+      const age = Date.now() - statSync(LOCK_PATH).mtimeMs;
+      if (age > LOCK_STALE_MS) {
+        unlinkSync(LOCK_PATH);
+        console.warn(
+          `[feature-status] Removed stale install lock (age: ${Math.round(age / 1000)}s)`,
+        );
+      }
+    } catch {
+      // stat/unlink failed -- fall through to O_EXCL which will fail too
+    }
+  }
   try {
     const fd = openSync(LOCK_PATH, constants.O_WRONLY | constants.O_CREAT | constants.O_EXCL);
     const lock: LockData = {

apps/api/src/routes/progress.ts

@@ -219,6 +219,11 @@ export async function registerProgressRoutes(app: FastifyInstance): Promise<void
       // Take over the response from Fastify for SSE streaming
       reply.hijack();
 
+      // Disable socket timeout -- feature installs can take 30+ minutes
+      // for large model downloads. Without this, Node's requestTimeout
+      // kills the SSE connection mid-install.
+      request.raw.socket?.setTimeout?.(0);
+
       // Send SSE headers via the raw Node response
       reply.raw.writeHead(200, {
         "Content-Type": "text/event-stream",