Improve plot resolution and fix UUID syntax errors

- Increase DPI from 300 to 400 for even higher resolution on HuggingFace
- Increase font size from 11 to 12 for better readability
- Add detailed instructions about UUID generation syntax to prevent bracket errors
- Add instructions for high-resolution saving with bbox_inches='tight'
- Add warning about proper f-string bracket escaping in templates

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

Co-Authored-By: Claude <[email protected]>

src.py

@@ -251,8 +251,8 @@ import numpy as np
 
 # Set professional matplotlib styling
 plt.rcParams.update({{
-    'font.size': 11,
-    'figure.dpi': 300,
+    'font.size': 12,
+    'figure.dpi': 400,
     'figure.facecolor': 'white',
     'axes.facecolor': 'white',
     'axes.edgecolor': '#e2e8f0',
@@ -293,11 +293,13 @@ df["Timestamp"] = pd.to_datetime(df["Timestamp"])
         3. If returning text/numbers, store the result directly in 'answer'
         4. Use descriptive variable names and add comments
         5. Handle potential errors gracefully
-        6. For plots, use unique filenames to avoid conflicts
+        6. For plots, use unique filenames: f"plot_name_{{uuid.uuid4().hex[:8]}}.png" (note proper bracket syntax)
         7. Make plots professional with proper titles, labels, and styling
         8. Use plt.tight_layout() before saving plots
         9. For line plots, use linewidth=2.5 and markersize=8 for better visibility
         10. Add proper axis labels with units (e.g., 'PM2.5 (µg/m³)')
+        11. For high-resolution plots, use bbox_inches='tight', dpi=400 in plt.savefig()
+        12. IMPORTANT: Use double curly braces {{}} in f-strings within the template to avoid syntax errors
         """
 
         query = f"""{system_prompt}