fix: lowercase the GHCR image name

github.repository preserves the owner's casing and GHCR rejects any
uppercase in a repository name, so the image job failed on tag validation
before it built anything.

Also drops the review-quarantine skill's references to evidence spans and the
extraction-evaluator agent, both of which went away with the LLM layer.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

.github/workflows/ci.yml

@@ -92,6 +92,12 @@ jobs:
 
       - uses: docker/setup-buildx-action@v3
 
+      - name: Lowercase image name
+        id: img
+        # GHCR rejects any uppercase in a repository name, and
+        # github.repository preserves the owner's casing verbatim.
+        run: echo "name=ghcr.io/${GITHUB_REPOSITORY,,}" >> "$GITHUB_OUTPUT"
+
       - uses: docker/login-action@v3
         with:
           registry: ghcr.io
@@ -103,8 +109,8 @@ jobs:
           context: .
           push: true
           tags: |
-            ghcr.io/${{ github.repository }}:latest
-            ghcr.io/${{ github.repository }}:${{ github.sha }}
+            ${{ steps.img.outputs.name }}:latest
+            ${{ steps.img.outputs.name }}:${{ github.sha }}
           cache-from: type=gha
           cache-to: type=gha,mode=max