fix(director): keep scene results and save status accurate (#971)

- Guard against legacy pack bootstrap during unreadable storage recovery
- Report failed saves honestly across captures, updates, and imports
- Resolve default scene id correctly when advancing past a specific shot
- Count unique scenes executed rather than queued shots in run telemetry
- Return run failure status when playback throws instead of false success
- Pin five regression scenarios in src/scenes/director971.test.mjs

scripts/format-scope.json

@@ -32,6 +32,7 @@
   "scripts/build-admin-packs.mjs",
   "scripts/qa-admin-outlines.mjs",
   "src/data/inputOwnership.test.mjs",
+  "src/scenes/director971.test.mjs",
   "docs/CODE-BOUNDARIES.md",
   "src/main.js",
   "docs/APPLICATION.md",