fix(bridge): v0.3.5 — inline script + deterministic port + auto-checksum

- vscode-file:// refuses custom .js files → inline script into HTML
- Random port → deterministic port from project name hash (gravity_control=34332)
- Hardcoded port in renderer script for immediate discovery
- Auto-update product.json SHA256 checksums after HTML modification
- Bump version 0.2.0 → 0.3.5

extension/package.json

@@ -2,7 +2,7 @@
     "name": "gravity-bridge",
     "displayName": "Gravity Bridge",
     "description": "Antigravity ↔ Discord 브리지 연동 확장",
-    "version": "0.2.0",
+    "version": "0.3.5",
     "publisher": "variet",
     "engines": {
         "vscode": "^1.100.0"