diff --git a/public/sw.js b/public/sw.js
deleted file mode 100644
index f89ebfe..0000000
--- a/public/sw.js
+++ /dev/null
@@ -1,270 +0,0 @@
-// /sw.js — tee streaming response and persist to localforage exactly like index (no stream id)
-try {
-  importScripts('https://cdn.jsdelivr.net/npm/localforage@1.10.0/dist/localforage.min.js');
-} catch (e) {
-  // importScripts may be blocked by CSP; we'll report via PING_STATUS
-}
-
-const TARGET_SUBSTRING = 'openrouter.ai/api/v1/chat/completions';
-const THREADS_KEY = 'threads_v1';
-const gid = () => Math.random().toString(36).slice(2,9) + '-' + Date.now().toString(36);
-const now = () => Date.now();
-
-let lfAvailable = (typeof localforage !== 'undefined');
-let lfLoadError = lfAvailable ? null : 'localforage not present in SW';
-
-async function broadcast(msg) {
-  try {
-    const clients = await self.clients.matchAll({ includeUncontrolled: true, type: 'window' });
-    for (const c of clients) {
-      try { c.postMessage(msg); } catch (e) { /* ignore per-client errors */ }
-    }
-  } catch (e) { /* ignore */ }
-}
-
-/* read/write exactly like index */
-async function readThreads() {
-  if (!lfAvailable) throw new Error('localforage unavailable: ' + lfLoadError);
-  const v = await localforage.getItem(THREADS_KEY);
-  return Array.isArray(v) ? v : (v ? v : []);
-}
-async function writeThreads(threads) {
-  if (!lfAvailable) throw new Error('localforage unavailable: ' + lfLoadError);
-  return localforage.setItem(THREADS_KEY, threads);
-}
-
-/* choose last thread by updatedAt, fallback to threads[0] or null */
-function pickLastThread(threads) {
-  if (!Array.isArray(threads) || threads.length === 0) return null;
-  return threads.slice().sort((a,b)=> (b.updatedAt||0) - (a.updatedAt||0))[0];
-}
-
-/* upsert: if last message is assistant -> update it, else append one.
-   message shape matches index: { role:'assistant', content, contentParts:[{type:'text',text}] } */
-function upsertAssistantInThread(thread, text) {
-  thread.updatedAt = now();
-  thread.messages = thread.messages || [];
-  const last = thread.messages.length ? thread.messages[thread.messages.length - 1] : null;
-  if (last && last.role === 'assistant') {
-    last.content = text;
-    last.contentParts = [{ type: 'text', text }];
-    last.updatedAt = now();
-    return { threadId: thread.id, messageId: last.id || null, action: 'updated' };
-  } else {
-    const msg = {
-      // intentionally do not add extra custom ids/flags beyond minimal fields
-      role: 'assistant',
-      content: text,
-      contentParts: [{ type: 'text', text }]
-    };
-    thread.messages.push(msg);
-    return { threadId: thread.id, messageId: msg.id || null, action: 'appended' };
-  }
-}
-
-/* lifecycle */
-self.addEventListener('install', ev => self.skipWaiting());
-self.addEventListener('activate', ev => ev.waitUntil(self.clients.claim()));
-
-/* fetch handler: tee and persist chunks */
-self.addEventListener('fetch', event => {
-  try {
-    const url = String(event.request.url || '');
-    if (!url.includes(TARGET_SUBSTRING)) return; // ignore unrelated fetches
-
-    event.respondWith((async () => {
-      const resUp = await fetch(event.request);
-      if (!resUp || !resUp.body) return resUp;
-
-      // minimal meta for broadcasts
-      const meta = { url, startedAt: now(), bytes: 0 };
-      broadcast({ type: 'INTERCEPT_START', meta });
-
-      const [clientStream, swStream] = resUp.body.tee();
-      const saveTask = (async () => {
-        const reader = swStream.getReader();
-        const decoder = new TextDecoder('utf-8');
-        let acc = '';
-        let lastSavedText = null;
-
-        try {
-          while (true) {
-            const { value, done } = await reader.read();
-            if (done) break;
-            const chunk = decoder.decode(value, { stream: true });
-            acc += chunk;
-            meta.bytes += (value ? (value.byteLength || 0) : chunk.length);
-
-            // only attempt save if text actually changed since last save
-            if (lastSavedText !== acc) {
-              const p = (async () => {
-                try {
-                  const threads = await readThreads();
-                  let thread = pickLastThread(threads);
-                  if (!thread) {
-                    // create thread if none — keep shape index uses
-                    thread = { id: 'sw-thread-' + gid(), title: 'Missed while backgrounded', pinned:false, updatedAt: now(), messages: [] };
-                    threads.unshift(thread);
-                  }
-                  const res = upsertAssistantInThread(thread, acc);
-                  await writeThreads(threads); // exact index call
-                  lastSavedText = acc;
-                  broadcast({ type: 'INTERCEPT_SAVE', meta: { threadId: res.threadId, action: res.action, bytes: meta.bytes, textLen: acc.length } });
-                } catch (err) {
-                  broadcast({ type: 'INTERCEPT_ERROR', meta: { error: String(err && err.message ? err.message : err) } });
-                }
-              })();
-
-              // attach save promise to SW lifecycle
-              try { event.waitUntil(p); } catch (e) { /* ignore in some runtimes */ }
-            }
-          }
-
-          // final flush if needed (if lastSavedText changed)
-          if (lastSavedText !== acc) {
-            try {
-              const threads = await readThreads();
-              let thread = pickLastThread(threads);
-              if (!thread) {
-                thread = { id: 'sw-thread-' + gid(), title: 'Missed while backgrounded', pinned:false, updatedAt: now(), messages: [] };
-                threads.unshift(thread);
-              }
-              const res = upsertAssistantInThread(thread, acc);
-              await writeThreads(threads);
-              broadcast({ type: 'INTERCEPT_SAVE', meta: { threadId: res.threadId, action: res.action, bytes: meta.bytes, textLen: acc.length } });
-            } catch (err) {
-              broadcast({ type: 'INTERCEPT_ERROR', meta: { error: String(err && err.message ? err.message : err) } });
-            }
-          }
-
-          broadcast({ type: 'INTERCEPT_END', meta: { bytes: meta.bytes, endedAt: now() } });
-        } catch (err) {
-          broadcast({ type: 'INTERCEPT_ERROR', meta: { error: String(err && err.message ? err.message : err) } });
-        }
-      })();
-
-      // keep SW alive while saves run
-      try { event.waitUntil(saveTask); } catch (e) { /* ignore */ }
-
-      return new Response(clientStream, {
-        status: resUp.status,
-        statusText: resUp.statusText,
-        headers: resUp.headers
-      });
-    })());
-  } catch (err) {
-    broadcast({ type: 'INTERCEPT_ERROR', meta: { error: String(err && err.message ? err.message : err) } });
-  }
-});
-
-/* message handler: concise debug commands */
-self.addEventListener('message', event => {
-  const data = event.data || {};
-  (async () => {
-    try {
-      if (data.type === 'PING') {
-        if (event.ports && event.ports[0]) event.ports[0].postMessage({ type: 'PONG', ts: now() });
-        else broadcast({ type: 'PONG', ts: now() });
-        return;
-      }
-
-      if (data.type === 'PING_STATUS') {
-        const reply = { type: 'PONG_STATUS', ts: now(), lfAvailable, lfLoadError };
-        if (event.ports && event.ports[0]) event.ports[0].postMessage(reply);
-        else broadcast(reply);
-        return;
-      }
-
-      if (data.type === 'TEST_WRITE') {
-        if (!lfAvailable) {
-          const out = { type: 'TEST_WRITE_RESULT', ok: false, error: 'localforage unavailable: ' + lfLoadError };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(out); else broadcast(out);
-          return;
-        }
-        try {
-          const threads = await readThreads();
-          const tid = 'sw-test-' + gid();
-          const nowMs = now();
-          const t = { id: tid, title: 'SW test ' + new Date(nowMs).toISOString(), pinned:false, updatedAt: nowMs, messages: [ { role:'assistant', content:'sw test write @ ' + new Date(nowMs).toISOString(), contentParts:[{type:'text',text:'sw test write'}] } ] };
-          threads.unshift(t);
-          await writeThreads(threads);
-          const out = { type: 'TEST_WRITE_RESULT', ok:true, tid };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(out); else broadcast(out);
-        } catch (err) {
-          const out = { type: 'TEST_WRITE_RESULT', ok:false, error: String(err && err.message ? err.message : err) };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(out); else broadcast(out);
-        }
-        return;
-      }
-
-      if (data.type === 'READ_KEY') {
-        const key = data.key || THREADS_KEY;
-        if (!lfAvailable) {
-          const res = { type: 'READ_KEY_RESULT', ok:false, key, error: 'localforage unavailable: ' + lfLoadError };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(res); else broadcast(res);
-          return;
-        }
-        try {
-          const value = await localforage.getItem(key);
-          const out = { type: 'READ_KEY_RESULT', ok:true, key, value };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(out); else broadcast(out);
-        } catch (err) {
-          const out = { type: 'READ_KEY_RESULT', ok:false, key, error: String(err && err.message ? err.message : err) };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(out); else broadcast(out);
-        }
-        return;
-      }
-
-      if (data.type === 'LIST_SW_SAVED') {
-        if (!lfAvailable) {
-          const res = { type:'LIST_SW_SAVED_RESULT', ok:false, error: 'localforage unavailable: ' + lfLoadError };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(res); else broadcast(res);
-          return;
-        }
-        try {
-          const threads = await readThreads();
-          const found = [];
-          for (const t of (threads || [])) {
-            for (const m of (t.messages || [])) {
-              if (m && m.role === 'assistant') {
-                // we can't know whether assistant messages were created by SW or page; include short snippet
-                found.push({ threadId: t.id, snippet: (m.content||'').slice(0,200) });
-              }
-            }
-          }
-          const out = { type: 'LIST_SW_SAVED_RESULT', ok: true, found };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(out); else broadcast(out);
-        } catch (err) {
-          const out = { type: 'LIST_SW_SAVED_RESULT', ok:false, error: String(err && err.message ? err.message : err) };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(out); else broadcast(out);
-        }
-        return;
-      }
-
-      if (data.type === 'CLEAR_TESTS') {
-        if (!lfAvailable) {
-          const res = { type:'CLEAR_TESTS_RESULT', ok:false, error: 'localforage unavailable: ' + lfLoadError };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(res); else broadcast(res);
-          return;
-        }
-        try {
-          const threads = await readThreads();
-          const before = threads.length;
-          const cleaned = threads.filter(t => !(t.id && String(t.id).startsWith('sw-test-')));
-          await writeThreads(cleaned);
-          const removed = before - cleaned.length;
-          const out = { type:'CLEAR_TESTS_RESULT', ok:true, removed };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(out); else broadcast(out);
-        } catch (err) {
-          const out = { type:'CLEAR_TESTS_RESULT', ok:false, error: String(err && err.message ? err.message : err) };
-          if (event.ports && event.ports[0]) event.ports[0].postMessage(out); else broadcast(out);
-        }
-        return;
-      }
-
-    } catch (err) {
-      const r = { type: 'SW_ERROR', error: String(err && err.message ? err.message : err) };
-      if (event.ports && event.ports[0]) event.ports[0].postMessage(r); else broadcast(r);
-    }
-  })();
-});