Add extra prompts, endless generation, random character default, and small fixes

- Add extra positive/negative prompt textareas to all 9 detail pages with session persistence
- Add Endless generation button to all detail pages (continuous preview generation until stopped)
- Default character selector to "Random Character" on all secondary detail pages
- Fix queue clear endpoint (remove spurious auth check)
- Refactor app.py into routes/ and services/ modules
- Update CLAUDE.md with new architecture documentation
- Various data file updates and cleanup

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

routes/queue_api.py

@@ -0,0 +1,98 @@
+import logging
+from services.job_queue import (
+    _job_queue_lock, _job_queue, _job_history, _queue_worker_event,
+)
+
+logger = logging.getLogger('gaze')
+
+
+def register_routes(app):
+
+    @app.route('/api/queue')
+    def api_queue_list():
+        """Return the current queue as JSON."""
+        with _job_queue_lock:
+            jobs = [
+                {
+                    'id': j['id'],
+                    'label': j['label'],
+                    'status': j['status'],
+                    'error': j['error'],
+                    'created_at': j['created_at'],
+                }
+                for j in _job_queue
+            ]
+        return {'jobs': jobs, 'count': len(jobs)}
+
+    @app.route('/api/queue/count')
+    def api_queue_count():
+        """Return just the count of active (non-done, non-failed) jobs."""
+        with _job_queue_lock:
+            count = sum(1 for j in _job_queue if j['status'] in ('pending', 'processing', 'paused'))
+        return {'count': count}
+
+    @app.route('/api/queue/<job_id>/remove', methods=['POST'])
+    def api_queue_remove(job_id):
+        """Remove a pending or paused job from the queue."""
+        with _job_queue_lock:
+            job = _job_history.get(job_id)
+            if not job:
+                return {'error': 'Job not found'}, 404
+            if job['status'] == 'processing':
+                return {'error': 'Cannot remove a job that is currently processing'}, 400
+            try:
+                _job_queue.remove(job)
+            except ValueError:
+                pass  # Already not in queue
+            job['status'] = 'removed'
+        return {'status': 'ok'}
+
+    @app.route('/api/queue/<job_id>/pause', methods=['POST'])
+    def api_queue_pause(job_id):
+        """Toggle pause/resume on a pending job."""
+        with _job_queue_lock:
+            job = _job_history.get(job_id)
+            if not job:
+                return {'error': 'Job not found'}, 404
+            if job['status'] == 'pending':
+                job['status'] = 'paused'
+            elif job['status'] == 'paused':
+                job['status'] = 'pending'
+                _queue_worker_event.set()
+            else:
+                return {'error': f'Cannot pause/resume job with status {job["status"]}'}, 400
+        return {'status': 'ok', 'new_status': job['status']}
+
+    @app.route('/api/queue/clear', methods=['POST'])
+    def api_queue_clear():
+        """Clear all pending jobs from the queue (allows current processing job to finish)."""
+        removed_count = 0
+        with _job_queue_lock:
+            pending_jobs = [j for j in _job_queue if j['status'] == 'pending']
+            for job in pending_jobs:
+                try:
+                    _job_queue.remove(job)
+                    job['status'] = 'removed'
+                    removed_count += 1
+                except ValueError:
+                    pass
+        logger.info("Cleared %d pending jobs from queue", removed_count)
+        return {'status': 'ok', 'removed_count': removed_count}
+
+    @app.route('/api/queue/<job_id>/status')
+    def api_queue_job_status(job_id):
+        """Return the status of a specific job."""
+        with _job_queue_lock:
+            job = _job_history.get(job_id)
+            if not job:
+                return {'error': 'Job not found'}, 404
+            resp = {
+                'id': job['id'],
+                'label': job['label'],
+                'status': job['status'],
+                'error': job['error'],
+                'comfy_prompt_id': job['comfy_prompt_id'],
+            }
+            if job.get('result'):
+                resp['result'] = job['result']
+            return resp