chore: formalize dotnet backend repository

docs/migration-roadmap.md

@@ -2,6 +2,11 @@
 
 本文档用于记录从旧 PocketBase / Supabase / NestJS 后端迁移到新 ASP.NET Core + PostgreSQL 后端的阶段性状态和后续优先级。
 
+仓库转正决策和第一阶段基线分别见：
+
+- [`docs/adr/0001-authoritative-dotnet-backend.md`](adr/0001-authoritative-dotnet-backend.md)
+- [`docs/migration/phase-1-repository-baseline.md`](migration/phase-1-repository-baseline.md)
+
 迁移原则：
 
 - 不追求旧接口逐字兼容，新前端按新 REST API 对接。
@@ -205,13 +210,14 @@
 每批迁移完成后都必须：
 
 ```bash
-dotnet build /home/xiong/Games/Anii/TIKU-BACKEND/TIKU-BACKEND.slnx
-dotnet test /home/xiong/Games/Anii/TIKU-BACKEND/TIKU-BACKEND.slnx
-dotnet format /home/xiong/Games/Anii/TIKU-BACKEND/TIKU-BACKEND.slnx --verify-no-changes
-git -C /home/xiong/Games/Anii/TIKU-BACKEND diff --check
+dotnet restore TIKU-BACKEND.slnx
+dotnet build TIKU-BACKEND.slnx --no-restore
+dotnet test TIKU-BACKEND.slnx --no-build
+dotnet format TIKU-BACKEND.slnx --verify-no-changes --no-restore
+git diff --check
 dotnet ef migrations script \
-  --project /home/xiong/Games/Anii/TIKU-BACKEND/Tiku.Infrastructure \
-  --startup-project /home/xiong/Games/Anii/TIKU-BACKEND/Tiku.DbMigrator
+  --project Tiku.Infrastructure \
+  --startup-project Tiku.DbMigrator
 ```
 
 如果某批不涉及数据库 migration，也仍然运行 migration script，确认当前模型快照和迁移链没有损坏。