feat(pilot): TemplateMatchPanel — explicit 'I ran this' action

Generate and Copy alone don't declare a run — the engineer can walk
away after copying. Phase 9 §5 defines an explicit run-declaration
affordance so applied_at only stamps on the engineer's positive
commitment. Wiring from AssistantChatPage lands in Task 13.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/components/pilot/script/TemplateMatchPanel.tsx

@@ -28,6 +28,9 @@ interface TemplateMatchPanelProps {
   fix: SessionSuggestedFix
   sessionId: string
   onClose: () => void
+  /** Fires when the engineer declares the script was run. Parent calls
+   *  applyFix() to stamp applied_at. */
+  onMarkRun?: () => void
 }
 
 interface ParamSchemaEntry {
@@ -39,7 +42,7 @@ interface ParamSchemaEntry {
   options?: Array<{ label: string; value: string }>
 }
 
-export function TemplateMatchPanel({ fix, sessionId, onClose }: TemplateMatchPanelProps) {
+export function TemplateMatchPanel({ fix, sessionId, onClose, onMarkRun }: TemplateMatchPanelProps) {
   const [template, setTemplate] = useState<ScriptTemplateDetail | null>(null)
   const [templateLoading, setTemplateLoading] = useState(true)
   const [templateError, setTemplateError] = useState<string | null>(null)
@@ -243,6 +246,16 @@ export function TemplateMatchPanel({ fix, sessionId, onClose }: TemplateMatchPan
               >
                 Edit parameters
               </button>
+              {onMarkRun && (
+                <button
+                  onClick={onMarkRun}
+                  className="inline-flex items-center gap-1.5 px-3 py-1.5 rounded text-[0.75rem] font-semibold bg-accent text-[#0a0d14] hover:brightness-110 transition-colors"
+                  aria-label="Mark the script as applied to start verifying the fix"
+                >
+                  <Check size={12} aria-hidden="true" />
+                  I ran this
+                </button>
+              )}
             </div>
           </>
         )}