feat: v9.8.1 pre-built Docker images and GHCR release workflow

Setup.py now asks whether to pull pre-built images from GHCR
(recommended) or build from source. Pre-built mode skips the
15-minute compile step entirely.

- Add .github/workflows/release.yml (builds+pushes 4 images on tag)
- Add docker-compose.build.yml (source-build overlay)
- Switch docker-compose.prod.yml from build: to image: refs
- Add --build-mode CLI arg and wizard step to setup.py
- Bump version to 9.8.1 across all files
- Document TOD_VERSION env var in CONFIGURATION.md

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

backend/app/config.py

@@ -144,7 +144,7 @@ class Settings(BaseSettings):
 
     # App settings
     APP_NAME: str = "TOD - The Other Dude"
-    APP_VERSION: str = "9.8.0"
+    APP_VERSION: str = "9.8.1"
     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 = "9.8.0"
+version = "9.8.1"
 description = "MikroTik Fleet Management Portal - Backend API"
 requires-python = ">=3.12"
 dependencies = [