Fix missing tabulate dependency for dashboard

- Added tabulate to requirements.txt
- Added fallback for to_markdown() if tabulate missing
- Fixes ImportError on Hugging Face Spaces startup
- Dashboard now loads automatically from checkpoints/metrics.csv

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

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

app.py

@@ -342,6 +342,13 @@ def load_metrics(path: str):
 
     # Summary statistics
     energy_col = 'save_rate' if 'save_rate' in df.columns else 'energy_savings'
+
+    # Try markdown table, fallback to CSV format if tabulate is missing
+    try:
+        last_5_table = df.tail(5).to_markdown(index=False)
+    except ImportError:
+        last_5_table = "```\n" + df.tail(5).to_string(index=False) + "\n```"
+
     summary = f"""
 ### Training Summary
 
@@ -351,7 +358,7 @@ def load_metrics(path: str):
 **Average Energy Savings:** {df[energy_col].mean()*100:.1f}%
 
 #### Last 5 Epochs:
-{df.tail(5).to_markdown(index=False)}
+{last_5_table}
 """
 
     fig_loss = _plot_to_pil(df, "train_loss", "Training Loss Over Time", "Loss", color='#FF5722')

app122.py

@@ -342,6 +342,13 @@ def load_metrics(path: str):
 
     # Summary statistics
     energy_col = 'save_rate' if 'save_rate' in df.columns else 'energy_savings'
+
+    # Try markdown table, fallback to CSV format if tabulate is missing
+    try:
+        last_5_table = df.tail(5).to_markdown(index=False)
+    except ImportError:
+        last_5_table = "```\n" + df.tail(5).to_string(index=False) + "\n```"
+
     summary = f"""
 ### Training Summary
 
@@ -351,7 +358,7 @@ def load_metrics(path: str):
 **Average Energy Savings:** {df[energy_col].mean()*100:.1f}%
 
 #### Last 5 Epochs:
-{df.tail(5).to_markdown(index=False)}
+{last_5_table}
 """
 
     fig_loss = _plot_to_pil(df, "train_loss", "Training Loss Over Time", "Loss", color='#FF5722')

requirements.txt

@@ -6,6 +6,7 @@ scikit-learn
 matplotlib
 pyyaml
 pandas
+tabulate
 seaborn
 huggingface_hub
 onnx