chore: record journal

.trellis/workspace/hechang27-sprt/index.md

@@ -8,8 +8,8 @@
 
 <!-- @@@auto:current-status -->
 - **Active File**: `journal-1.md`
-- **Total Sessions**: 8
+- **Total Sessions**: 9
-- **Last Active**: 2026-03-30
+- **Last Active**: 2026-03-31
 <!-- @@@/auto:current-status -->
 
 ---
@@ -19,7 +19,7 @@
 <!-- @@@auto:active-documents -->
 | File | Lines | Status |
 |------|-------|--------|
-| `journal-1.md` | ~308 | Active |
+| `journal-1.md` | ~340 | Active |
 <!-- @@@/auto:active-documents -->
 
 ---
@@ -29,6 +29,7 @@
 <!-- @@@auto:session-history -->
 | # | Date | Title | Commits |
 |---|------|-------|---------|
+| 9 | 2026-03-31 | Optimize list-table-v2 resize performance | `5e88867` |
 | 8 | 2026-03-30 | Table-v2 comprehensive demo page | `62ab397` |
 | 7 | 2026-03-28 | Restructure and cleanup list-table-v2 mini-table rendering | `a2eeb86` |
 | 6 | 2026-03-27 | Expose cellRenderer and headerCellRenderer for list-table-v2 | `3c97cd7` |

.trellis/workspace/hechang27-sprt/journal-1.md

@@ -306,3 +306,35 @@ Reworked `examples/view/base/table-v2.vue` into a comprehensive demo page for `l
 ### Next Steps
 
 - None - task complete
+
+
+## Session 9: Optimize list-table-v2 resize performance
+
+**Date**: 2026-03-31
+**Task**: Optimize list-table-v2 resize performance
+
+### Summary
+
+Implemented 3-layer performance optimization for list-table-v2: (1) Height-change detection - only re-probe when mini-table height actually changes, (2) Viewport-based observer detachment - ResizeObserver only attached when table is visible, (3) Display:none for off-screen tables - removes hidden mini-tables from GPU layout. Also added oxlint as linter.
+
+### Main Changes
+
+
+
+### Git Commits
+
+| Hash | Message |
+|------|---------|
+| `5e88867` | (see git log) |
+
+### Testing
+
+- [OK] (Add test results)
+
+### Status
+
+[OK] **Completed**
+
+### Next Steps
+
+- None - task complete