chore: record journal

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

@@ -906,3 +906,28 @@ Completed and archived Phase 0: documented native-road-package/v1, added strict
 ### Status
 
 [OK] **Completed**
+
+
+## Session 43: Extract road compiler package boundary
+
+**Date**: 2026-08-25
+**Task**: Extract road compiler package boundary
+**Branch**: `experiment/road-compiler-rethink`
+
+### Summary
+
+Completed and archived Phase 1: moved native road compiler, checks, workbench, signal schema, OSM parser, and fixtures into packages/road-compiler; introduced RoadCompilerInput mapping; verified two-area parity and a privileged full Fengshu build.
+
+### Git Commits
+
+| Hash | Message |
+|------|---------|
+| `73707da` | (see git log) |
+| `d5c58b5` | (see git log) |
+| `f542a64` | (see git log) |
+| `284d3db` | (see git log) |
+| `2469cfd` | (see git log) |
+
+### Status
+
+[OK] **Completed**