feat: complete vendor repos, add edge intelligence and WASM modules

- Add 154 missing vendor files (gitignore was filtering them)
  - vendor/midstream: 564 files (was 561)
  - vendor/sublinear-time-solver: 1190 files (was 1039)
- Add ESP32 edge processing (ADR-039): presence, vitals, fall detection
- Add WASM programmable sensing (ADR-040/041) with wasm3 runtime
- Add firmware CI workflow (.github/workflows/firmware-ci.yml)
- Add wifi-densepose-wasm-edge crate for edge WASM modules
- Update sensing server, provision.py, UI components

Co-Authored-By: claude-flow <ruv@ruv.net>

ui/mobile/src/services/simulation.service.ts

@@ -103,5 +103,6 @@ export function generateSimulatedData(timeMs = Date.now()): SensingFrame {
       hr_proxy_bpm: hrProxy,
       confidence,
     },
+    estimated_persons: isPresent ? 1 : 0,
   };
 }