chore: record journal

.trellis/workspace/dingkang/index.md

@@ -8,7 +8,7 @@
 
 <!-- @@@auto:current-status -->
 - **Active File**: `journal-1.md`
-- **Total Sessions**: 26
+- **Total Sessions**: 27
 - **Last Active**: 2026-08-07
 <!-- @@@/auto:current-status -->
 
@@ -19,7 +19,7 @@
 <!-- @@@auto:active-documents -->
 | File | Lines | Status |
 |------|-------|--------|
-| `journal-1.md` | ~554 | Active |
+| `journal-1.md` | ~575 | Active |
 <!-- @@@/auto:active-documents -->
 
 ---
@@ -29,6 +29,7 @@
 <!-- @@@auto:session-history -->
 | # | Date | Title | Commits | Branch |
 |---|------|-------|---------|--------|
+| 27 | 2026-08-07 | QGIS traffic signal editing and countdown stability | `e153a1c` | `main` |
 | 26 | 2026-08-07 | 交通信号拓扑与部分构建同步修复 | `1c077a3` | `main` |
 | 25 | 2026-08-06 | Cesium traffic signal countdowns | `0e1574f` | `main` |
 | 24 | 2026-08-05 | 拆分 LowPoly Cars 车辆资产 | `3108336`, `2489b8a` | `main` |

.trellis/workspace/dingkang/journal-1.md

@@ -552,3 +552,24 @@ Added shared 7LED countdown geometry, split dynamic Cesium assets by phase group
 ### Status
 
 [OK] **Completed**
+
+
+## Session 27: QGIS traffic signal editing and countdown stability
+
+**Date**: 2026-08-07
+**Task**: QGIS traffic signal editing and countdown stability
+**Branch**: `main`
+
+### Summary
+
+Implemented editable traffic signal assemblies in QGIS with stable IDs, position/heading overrides, reimport ownership, source validation, and Blender/Cesium runtime derivation. Fixed long signal IDs overflowing Blender node names with short nodeKey values, and changed QGIS SVG symbols to direct heading_deg field rotation so QGIS rotation edits write back to the field. Verified real GeoPackage round-trip, focused Node tests, preview tests, and 59 Blender tests. Safari cache caused stale GLB symptoms and was resolved with a hard refresh.
+
+### Git Commits
+
+| Hash | Message |
+|------|---------|
+| `e153a1c` | (see git log) |
+
+### Status
+
+[OK] **Completed**