chore: remove test endpoints, clean up routing

Removed /test/* endpoints, added proper 404 JSON response.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[e-mail]>

src/pds.js

···
 
   async fetch(request) {
     const url = new URL(request.url)
-    if (url.pathname === '/test/cbor') {
-      const encoded = cborEncode({ hello: 'world', num: 42 })
-      return new Response(encoded, {
-        headers: { 'content-type': 'application/cbor' }
-      })
-    }
-    if (url.pathname === '/test/cid') {
-      const data = cborEncode({ test: 'data' })
-      const cid = await createCid(data)
-      return Response.json({ cid: cidToString(cid) })
-    }
-    if (url.pathname === '/test/tid') {
-      const tids = [createTid(), createTid(), createTid()]
-      return Response.json({ tids })
-    }
-    if (url.pathname === '/test/schema') {
-      const tables = this.sql.exec(`
-        SELECT name FROM sqlite_master WHERE type='table' ORDER BY name
-      `).toArray()
-      return Response.json({ tables: tables.map(t => t.name) })
-    }
-    if (url.pathname === '/test/sign') {
-      const kp = await generateKeyPair()
-      const data = new TextEncoder().encode('test message')
-      const key = await importPrivateKey(kp.privateKey)
-      const sig = await sign(key, data)
-      return Response.json({
-        publicKey: bytesToHex(kp.publicKey),
-        signature: bytesToHex(sig)
-      })
-    }
-    if (url.pathname === '/test/mst') {
-      // Insert some test records
-      this.sql.exec(`INSERT OR REPLACE INTO records VALUES (?, ?, ?, ?, ?)`,
-        'at://did:plc:test/app.bsky.feed.post/abc', 'cid1', 'app.bsky.feed.post', 'abc', new Uint8Array([1]))
-      this.sql.exec(`INSERT OR REPLACE INTO records VALUES (?, ?, ?, ?, ?)`,
-        'at://did:plc:test/app.bsky.feed.post/def', 'cid2', 'app.bsky.feed.post', 'def', new Uint8Array([2]))
-
-      const mst = new MST(this.sql)
-      const root = await mst.computeRoot()
-      return Response.json({ root })
-    }
     if (url.pathname === '/init') {
       const body = await request.json()
       if (!body.did || !body.privateKey) {
···
 
       return new Response(null, { status: 101, webSocket: client })
     }
-    return new Response('pds running', { status: 200 })
+    return Response.json({ error: 'not found' }, { status: 404 })
   }
 }