fix(respawn): wait for idle timeout before triggering cycle

- Fixed respawn controller immediately sending commands when Claude
  becomes idle, which prevented users from typing. Now waits for
  idleTimeoutMs (default 10s) before triggering the respawn cycle.
- Removed Directory field from Session Options modal for cleaner UI
- Compacted CLAUDE.md documentation for better readability

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/web/public/index.html

@@ -193,10 +193,6 @@
             <label>Session Name</label>
             <input type="text" id="sessionNameInput" placeholder="Enter session name...">
           </div>
-          <div class="form-row">
-            <label>Directory</label>
-            <div class="session-dir-display" id="sessionDirDisplay">/path/to/dir</div>
-          </div>
 
           <!-- Respawn Settings Section -->
           <div class="session-respawn-section" id="sessionRespawnSection">