refactor: uv-based deps, no nexus auth, LLM retries, lock cleanup, health checks, e2e tests

Dockerfile

@@ -7,13 +7,12 @@ COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /usr/local/bin/
 
 WORKDIR /app
 
-COPY pyproject.toml ./
-RUN grep -A20 'dependencies = \[' pyproject.toml | grep '"' | sed 's/[",]//g' | xargs uv pip install --system
-
-RUN uv pip install --system guarddog
-
+COPY pyproject.toml README.md ./
 COPY guarddog_nexus/ guarddog_nexus/
 
+RUN uv pip install . --system
+RUN uv pip install --system guarddog
+
 RUN mkdir -p /data /tmp/guarddog-nexus
 
 ENV DATABASE_PATH=/data/guarddog.db