Fix dev workflow hanging and implement runtime branch detection

- Fix duplicate Dockerfile sections that were causing build hangs
- Replace complex build args with simple runtime git branch detection
- Revert CI workflows to working state (remove build args and debug code)
- Add automatic version tagging: dev branch shows "0.2.15-dev"
- Enhanced movie fallback logic for rename-first scenarios
- Improved logging to trace movie date decision process

.gitea/workflows/ci-dev.yml

@@ -93,8 +93,6 @@ jobs:
         echo "Building DEV image with layer caching..."
         docker build \
           $CACHE_ARGS \
-          --build-arg BUILD_TYPE=dev \
-          --build-arg IMAGE_TAG=dev \
           --tag nfoguard:dev \
           --tag nfoguard:dev-${{ github.sha }} \
           --tag "$CACHE_IMAGE" \

.gitea/workflows/ci.yml

@@ -94,8 +94,6 @@ jobs:
         echo "Building with layer caching..."
         docker build \
           $CACHE_ARGS \
-          --build-arg BUILD_TYPE=production \
-          --build-arg IMAGE_TAG=latest \
           --tag nfoguard:latest \
           --tag nfoguard:${{ github.sha }} \
           --tag "$CACHE_IMAGE" \