Add run tagging (DB column + migration + route + UI)

- Added tags VARCHAR(300) column to Run model
- Added startup ALTER TABLE migration in app.py
- New POST /run/<id>/set_tags route saves comma-separated tags
- Tag badges + collapsible edit form in run_details.html header area

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

web/app.py

@@ -116,6 +116,14 @@ with app.app_context():
             _log("System: Added 'last_heartbeat' column to Run table.")
     except: pass
 
+    # Migration: Add 'tags' column if missing
+    try:
+        with db.engine.connect() as conn:
+            conn.execute(text("ALTER TABLE run ADD COLUMN tags VARCHAR(300)"))
+            conn.commit()
+            _log("System: Added 'tags' column to Run table.")
+    except: pass
+
     # Reset all non-terminal runs on startup (running, queued, interrupted)
     # The Huey consumer restarts with the app, so any in-flight tasks are gone.
     try:

web/db.py

@@ -35,6 +35,8 @@ class Run(db.Model):
     progress = db.Column(db.Integer, default=0)
     last_heartbeat = db.Column(db.DateTime, nullable=True)
 
+    tags = db.Column(db.String(300), nullable=True)
+
     logs = db.relationship('LogEntry', backref='run', lazy=True, cascade="all, delete-orphan")
 
     def duration(self):

web/routes/run.py

@@ -394,6 +394,22 @@ def revise_book(run_id, book_folder):
     return redirect(url_for('run.view_run', id=new_run.id))
 
 
+@run_bp.route('/run/<int:id>/set_tags', methods=['POST'])
+@login_required
+def set_tags(id):
+    run = db.session.get(Run, id)
+    if not run: return "Run not found", 404
+    if run.project.user_id != current_user.id: return "Unauthorized", 403
+
+    raw = request.form.get('tags', '')
+    tags = [t.strip() for t in raw.split(',') if t.strip()]
+    run.tags = ','.join(dict.fromkeys(tags))
+    db.session.commit()
+
+    flash("Tags updated.")
+    return redirect(url_for('run.view_run', id=id))
+
+
 @run_bp.route('/run/<int:id>/delete', methods=['POST'])
 @login_required
 def delete_run(id):