feat(fable-mcp): build wheel in Docker image, serve download, add admin log tool, and Settings install UI

- Dockerfile: build fable-mcp wheel into /app/dist/ during image build
- routes/fable_mcp_dist.py: GET /api/fable-mcp/info + /download endpoints
- app.py: register fable_mcp_dist_bp
- fable_mcp/tools/admin.py: get_app_logs() hitting /api/admin/logs
- fable_mcp/server.py: fable_get_app_logs MCP tool
- SettingsView: "Fable MCP" section in API Keys tab with download button and install instructions
- client.ts: getFableMcpInfo() helper
- ci.yml: add fable-mcp/** to trigger paths

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile

@@ -14,6 +14,13 @@ COPY pyproject.toml .
 COPY src/ src/
 RUN pip install --no-cache-dir .
 
+# Build the fable-mcp wheel so it can be served for download
+COPY fable-mcp/ fable-mcp/
+RUN pip install --no-cache-dir build hatchling \
+    && python -m build --wheel ./fable-mcp --outdir /app/dist/ \
+    && pip uninstall -y build \
+    && rm -rf fable-mcp/ /root/.cache/pip
+
 COPY --from=build-frontend /build/dist/ src/fabledassistant/static/
 COPY alembic.ini .
 COPY alembic/ alembic/