chore: record journal

.trellis/workspace/dingkang/index.md

@@ -8,8 +8,8 @@
 
 <!-- @@@auto:current-status -->
 - **Active File**: `journal-1.md`
-- **Total Sessions**: 39
+- **Total Sessions**: 40
-- **Last Active**: 2026-08-18
+- **Last Active**: 2026-08-24
 <!-- @@@/auto:current-status -->
 
 ---
@@ -19,7 +19,7 @@
 <!-- @@@auto:active-documents -->
 | File | Lines | Status |
 |------|-------|--------|
-| `journal-1.md` | ~845 | Active |
+| `journal-1.md` | ~866 | Active |
 <!-- @@@/auto:active-documents -->
 
 ---
@@ -29,6 +29,7 @@
 <!-- @@@auto:session-history -->
 | # | Date | Title | Commits | Branch |
 |---|------|-------|---------|--------|
+| 40 | 2026-08-24 | Stabilize Fengshu native road compilation | `f1f829c` | `fengshu-er-road` |
 | 39 | 2026-08-18 | Complete native-only pipeline replacement | `9e0e25a` | `feature/native-road-compiler` |
 | 38 | 2026-08-18 | Complete native traffic signal workflow | `5accc0a` | `feature/native-road-compiler` |
 | 37 | 2026-08-18 | Complete rounded native junction verification | `e41bfd1`, `f7e71cf` | `feature/native-road-compiler` |

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

@@ -843,3 +843,24 @@ Made native road compilation the default provider and full-build stage set; deco
 ### Status
 
 [OK] **Completed**
+
+
+## Session 40: Stabilize Fengshu native road compilation
+
+**Date**: 2026-08-24
+**Task**: Stabilize Fengshu native road compilation
+**Branch**: `fengshu-er-road`
+
+### Summary
+
+Validated and committed the Fengshu Er Road native compilation fixes, including stale override tolerance, corrected unreferenced complex-junction sizing, updated OSM input, and focused road/traffic preview regression coverage.
+
+### Git Commits
+
+| Hash | Message |
+|------|---------|
+| `f1f829c` | (see git log) |
+
+### Status
+
+[OK] **Completed**