tabbed frametype filtering

UPDATE_RATE_SUMMARY.md

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+# StreamLens Update Rate Optimization Summary
+
+## Problem
+The TUI was updating too frequently during PCAP parsing, causing:
+- High CPU usage during parsing
+- Choppy/stuttering interface
+- Poor responsiveness due to excessive updates
+
+## Solution
+Slowed down all update rates across the parsing pipeline and TUI layers.
+
+## Changes Made
+
+### 1. Background Analyzer Updates (`background_analyzer.py`)
+
+**Flow Update Batch Size:**
+- **Before:** Every 10 packets (very frequent)
+- **After:** Every 100 packets (10x slower)
+- **Impact:** Reduces flow update callbacks from UI threads
+
+**Progress Monitor Updates:**
+- **Before:** Every 0.5 seconds
+- **After:** Every 2.0 seconds (4x slower)
+- **Impact:** Progress bar and parsing stats update less frequently
+
+**Monitor Thread Sleep:**
+- **Before:** 0.1 second sleep between checks
+- **After:** 0.5 second sleep between checks (5x slower)
+- **Impact:** Reduces background thread CPU usage
+
+### 2. TUI Update Timers (`app_v2.py`)
+
+**Metrics Timer:**
+- **Before:** Every 2.0 seconds (0.5 Hz)
+- **After:** Every 5.0 seconds (0.2 Hz)
+- **Impact:** Flow counts, packet rates, outlier counts update less frequently
+
+**Flow Timer:**
+- **Before:** Every 5.0 seconds (0.2 Hz)
+- **After:** Every 10.0 seconds (0.1 Hz)
+- **Impact:** Flow table data refreshes less frequently
+
+## Performance Benefits
+
+### CPU Usage Reduction
+- **Flow callbacks:** 10x reduction (100 packets vs 10 packets)
+- **Progress updates:** 4x reduction (2.0s vs 0.5s intervals)
+- **Monitor overhead:** 5x reduction (0.5s vs 0.1s sleep)
+- **TUI metrics:** 2.5x reduction (5.0s vs 2.0s intervals)
+- **TUI flows:** 2x reduction (10.0s vs 5.0s intervals)
+
+### User Experience Improvements
+- ✅ **Smoother parsing** - Less frequent UI interruptions
+- ✅ **Lower CPU usage** - More resources for actual packet processing
+- ✅ **Stable interface** - Buttons and data don't flicker/jump
+- ✅ **Better responsiveness** - UI isn't blocked by constant updates
+- ✅ **Maintained functionality** - All features still work, just update slower
+
+## Update Timeline During Parsing
+
+### Fast File (< 1000 packets)
+- Progress updates every 2 seconds
+- Flow updates every 100 packets (could be ~1-5 times total)
+- TUI refreshes every 5-10 seconds
+
+### Medium File (1000-10000 packets)  
+- Progress updates every 2 seconds
+- Flow updates every 100 packets (~10-100 times total)
+- TUI refreshes every 5-10 seconds
+
+### Large File (> 10000 packets)
+- Progress updates every 2 seconds  
+- Flow updates every 100 packets (100+ times total)
+- TUI refreshes every 5-10 seconds
+
+## Technical Details
+
+### Thread Safety
+- All update rate changes maintain thread safety
+- Background parsing still uses proper locks and queues
+- UI updates still use `call_from_thread()` for thread-safe UI updates
+
+### Button Visibility Fix (Bonus)
+- Buttons now pre-created at TUI initialization instead of dynamic creation
+- Eliminates button creation delays during parsing
+- Frame type buttons visible immediately: `[1. Overview] [2. CH10-Data] [3. UDP]` etc.
+
+### Backward Compatibility
+- All existing functionality preserved
+- Same keyboard shortcuts (1-9,0 for filtering)
+- Same data accuracy and completeness
+- Same analysis features and reports
+
+## Testing
+
+Successfully tested with:
+- ✅ Button creation at initialization
+- ✅ Slower update rate configuration  
+- ✅ Real PCAP file parsing (`1 PTPGM.pcapng`)
+- ✅ TUI responsiveness and button visibility
+- ✅ Parsing completion and final results
+
+## Conclusion
+
+The PCAP parsing is now much smoother with significantly reduced CPU usage while maintaining all functionality. Users will experience:
+
+- **10x fewer flow update interruptions**
+- **4x fewer progress update interruptions** 
+- **5x less monitor thread overhead**
+- **2-3x fewer TUI refresh interruptions**
+
+The interface remains fully functional but is now much more pleasant to use during parsing operations.