Fix WeasyPrint system dependencies in Dockerfile

Use correct package names for Debian Trixie:
- libpango-1.0-0 instead of libpango1.0-0
- Add libharfbuzz0b and libpangoft2-1.0-0

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Dockerfile

@@ -23,10 +23,11 @@ COPY --from=ghcr.io/astral-sh/uv:latest /uv /bin/uv
 
 # Install WeasyPrint system dependencies
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    libpango1.0-0 \
-    libpangocairo-1.0-0 \
-    libgdk-pixbuf-2.0-0 \
+    libpango-1.0-0 \
+    libharfbuzz0b \
+    libpangoft2-1.0-0 \
     libffi8 \
+    libgdk-pixbuf-2.0-0 \
     shared-mime-info \
     fonts-dejavu-core \
     && rm -rf /var/lib/apt/lists/*