fix: add curl for Coolify health checks

python:3.13-slim doesn't include curl or wget, which Coolify
needs for HTTP health checks.

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

Dockerfile

@@ -1,14 +1,16 @@
 FROM python:3.13-slim
 
+RUN apt-get update && apt-get install -y --no-install-recommends curl && rm -rf /var/lib/apt/lists/*
+
 WORKDIR /app
 
-# Copy application first (needed for pip install)
+# Copy application
 COPY pyproject.toml .
 COPY api/ api/
 COPY mcp_server/ mcp_server/
 COPY config/ config/
 
-# Install dependencies only (not the project itself)
+# Install dependencies
 RUN pip install --no-cache-dir fastapi "uvicorn[standard]" httpx pydantic openai
 
 # Create data directory for skills/memory