chore: unify version to 9.7.0 with single source of truth

- Add VERSION file at project root as canonical version source
- Sync all version references: package.json, pyproject.toml, config.py,
  Chart.yaml, docs/CONFIGURATION.md (all were out of sync: 9.0.1, v9.6, 0.1.0)
- Replace hardcoded v9.6 in SettingsPage and About page with dynamic
  APP_VERSION import from @/lib/version.ts
- Add Vite define for __APP_VERSION__ reading from package.json at build time
- Add TypeScript global declaration for __APP_VERSION__

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/app/config.py

@@ -136,7 +136,7 @@ class Settings(BaseSettings):
 
     # App settings
     APP_NAME: str = "TOD - The Other Dude"
-    APP_VERSION: str = "0.1.0"
+    APP_VERSION: str = "9.7.0"
     DEBUG: bool = False
 
     @field_validator("CREDENTIAL_ENCRYPTION_KEY")

backend/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "the-other-dude-backend"
-version = "9.0.1"
+version = "9.7.0"
 description = "MikroTik Fleet Management Portal - Backend API"
 requires-python = ">=3.12"
 dependencies = [