STEP AWAY v3.0 APP POWERED MASTER BUILD

This build locks Step Away as an app powered tabletop system.

Core line:
The cards are the human language. The app is the hidden pressure system.

Commercial line:
The cards let you choose how to respond. The app makes the case alive.

What changed from the uploaded v2.20 app fix baseline:

1. App powered v3.0 product copy added to home screen, settings and data/settings.json.
2. Pinned feedback panel added to active play.
3. Version footer added to home screen.
4. Visible app, rules, case pack and variable versions added to settings.
5. data/variables.json added as the tuning map.
6. Hidden tuning route added at tuning.php with export/import variable bundle support.
7. Service workers updated to v3.0 cache names with network-first handling for JSON/data.
8. Session restore toast added.
9. Joker runtime bug fixed, Joker resolution no longer refers to an undefined band object.
10. Intervention story now returns emoji and impact values expected by flashImpact.
11. One-page rules and app instructions updated to app powered language.
12. Techbox insert PDF added, including App Access, Quick Start, Reference, App Required and Demo Case cards.
13. 5 Minute Demo Case PDF added, clearly labelled demo only.

Deployment note:
Change the admin/tuning password before public hosting.

Playtest note:
The mechanics are locked for first print and playtest. Tune variables, wording and UI friction only until playtest evidence says otherwise.
