Auto-commit: v2.12 — Fix frontend stuck on Initializing/Waiting for logs

- web/tasks.py: db_log_callback now writes non-OperationalError exceptions to data/app.log for visibility
- web/tasks.py: generate_book_task restructured with try...finally to guarantee final status update — run can never be left in 'running' state if worker crashes
- templates/project.html: added .catch() to fetchLog() with console.error + polling resume on failure; added manual Refresh button to status bar
- templates/run_details.html: improved .catch() in updateLog() with descriptive message + 5s retry; added manual Refresh button to status bar

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

templates/run_details.html

@@ -100,9 +100,14 @@
 <!-- Status Bar -->
 <div class="card shadow-sm mb-4">
     <div class="card-body">
-        <div class="d-flex justify-content-between mb-2">
+        <div class="d-flex justify-content-between align-items-center mb-2">
             <span class="fw-bold" id="status-text">Status: {{ run.status|title }}</span>
-            <span class="text-muted" id="run-duration">{{ run.duration() }}</span>
+            <div>
+                <span class="text-muted me-2" id="run-duration">{{ run.duration() }}</span>
+                <button type="button" class="btn btn-sm btn-outline-secondary py-0" onclick="updateLog()" title="Manually refresh status">
+                    <i class="fas fa-sync-alt"></i> Refresh
+                </button>
+            </div>
         </div>
         <div class="progress" style="height: 20px;">
             <div id="status-bar" class="progress-bar {% if run.status == 'running' %}progress-bar-striped progress-bar-animated{% elif run.status == 'failed' %}bg-danger{% else %}bg-success{% endif %}" 
@@ -440,7 +445,10 @@
                     }
                 }
             })
-            .catch(err => console.error(err));
+            .catch(err => {
+                console.error("Polling failed:", err);
+                setTimeout(updateLog, 5000);
+            });
     }
 
     // Start polling