feat: Last Prompt shows full prompt with evil mode awareness

- discord_bridge before_agent_starts now checks evil_mode from
  working_memory to load the correct personality files:
  Normal: miku_lore/prompt/lyrics + /app/moods/{mood}.txt
  Evil: evil_miku_lore/prompt/lyrics + /app/moods/evil/{mood}.txt
- Reads files directly instead of relying on cross-plugin working_memory
- cat_client.query() returns (response, full_prompt) tuple
- Full prompt includes system prefix + recalled memories + conversation
- API /prompt/cat returns full_prompt field

bot/static/index.html

@@ -4047,10 +4047,10 @@ async function loadLastPrompt() {
       const result = await apiCall('/prompt/cat');
       if (result.timestamp) {
         infoEl.innerHTML = `<strong>User:</strong> ${escapeHtml(result.user || '?')} &nbsp;|&nbsp; <strong>Mood:</strong> ${escapeHtml(result.mood || '?')} &nbsp;|&nbsp; <strong>Time:</strong> ${new Date(result.timestamp).toLocaleString()}`;
-        promptEl.textContent = `[User message → Cat]\n${result.prompt}\n\n[Cat response]\n${result.response}`;
+        promptEl.textContent = result.full_prompt + `\n\n${'═'.repeat(60)}\n[Cat Response]\n${result.response}`;
       } else {
         infoEl.textContent = '';
-        promptEl.textContent = result.prompt || 'No Cheshire Cat interaction yet.';
+        promptEl.textContent = result.full_prompt || 'No Cheshire Cat interaction yet.';
       }
     } else {
       infoEl.textContent = '';