Enhanced TUI with split flow details and timing analysis

- Added ΔT (deltaT), σ (sigma), and outlier count columns to flow table
- Split right panel into top (main flow) and bottom (sub-flow) sections
- Removed inner panel borders for clean 3-panel layout
- Added sub-flow selection logic with detailed timing statistics
- Implemented per-frame-type timing analysis in sub-flow details
- Color-coded outliers and timing data for quick visual assessment

analyzer/tui/textual/app_v2.py

@@ -19,7 +19,7 @@ import time
 from .widgets.sparkline import SparklineWidget
 from .widgets.metric_card import MetricCard
 from .widgets.flow_table_v2 import EnhancedFlowTable
-from .widgets.flow_details import FlowDetailsPanel
+from .widgets.split_flow_details import FlowMainDetailsPanel, SubFlowDetailsPanel
 
 if TYPE_CHECKING:
     from ...analysis.core import EthernetAnalyzer
@@ -90,20 +90,19 @@ class StreamLensAppV2(App):
                 yield MetricCard("Enhanced", f"{self.enhanced_flows}", color="success", id="enhanced-metric")
                 yield MetricCard("Outliers", f"{self.outlier_count}", color="warning" if self.outlier_count > 0 else "normal", id="outliers-metric")
             
-            # Main content area with horizontal split
+            # Main content area with 3 clean panels
             with Horizontal(id="content-area"):
-                # Left - Enhanced flow table (wider)
-                with Vertical(id="left-panel", classes="panel-wide"):
-                    yield EnhancedFlowTable(
-                        self.analyzer,
-                        id="flow-table"
-                    )
+                # Left - Enhanced flow table 
+                yield EnhancedFlowTable(
+                    self.analyzer,
+                    id="flow-table",
+                    classes="panel-wide"
+                )
                 
-                # Right - Selected flow details
-                with Vertical(id="right-panel", classes="panel"):
-                    yield FlowDetailsPanel(
-                        id="flow-details"
-                    )
+                # Right top - Main flow details
+                with Vertical(id="right-panels"):
+                    yield FlowMainDetailsPanel(id="main-flow-details")
+                    yield SubFlowDetailsPanel(id="sub-flow-details")
         
         yield Footer()
     
@@ -241,8 +240,13 @@ class StreamLensAppV2(App):
     def on_enhanced_flow_table_flow_selected(self, event: EnhancedFlowTable.FlowSelected) -> None:
         """Handle flow selection events"""
         if event.flow:
-            details_panel = self.query_one("#flow-details", FlowDetailsPanel)
-            details_panel.update_flow(event.flow)
+            # Update main flow details panel
+            main_panel = self.query_one("#main-flow-details", FlowMainDetailsPanel)
+            main_panel.update_flow(event.flow)
+            
+            # Update sub-flow details panel
+            sub_panel = self.query_one("#sub-flow-details", SubFlowDetailsPanel)
+            sub_panel.update_flow(event.flow, event.subflow_type)
     
     
     def _format_bytes_per_sec(self, bps: float) -> str: