WASM showcase apps

These source mirrors make the official x07-wasm showcase apps visible to both humans and code agents in the released docs bundle.

• x07_atlas/README.md: full-stack app bundle with offline-first UI, trace replay, regression generation, pack verification, provenance, deploy planning, and SLO evaluation
• x07_studio/README.md: desktop device bundle with persistent notes, import/export flows, provenance, packaging, and desktop host smoke
• x07_field_notes/README.md: shared desktop/mobile reducer with replay traces, desktop smoke, and iOS/Android packaging

These docs directories intentionally mirror source and contract files only. The canonical runnable projects, CI scripts, and generated outputs live in x07-wasm-backend/examples/.