fix: copy src directory before pip install

Dockerfile was failing because we tried to install in editable mode
before copying the src directory. Copy src/ first so that uv can
find the package structure properly.

Dockerfile

@@ -9,8 +9,11 @@ RUN pip install uv
 # Copy pyproject.toml first to leverage Docker cache
 COPY pyproject.toml .
 
+# Copy source directory for editable install
+COPY src/ ./src/
+
 # Install dependencies into system python environment of builder
-RUN uv pip install --system -e .
+RUN uv pip install --system .
 
 # Stage 2: Final Image
 FROM python:3.12-slim