feat(M01-A): 建立后端API基础骨架

scripts/dev/windows/check-release-manifest.ps1

@@ -2,14 +2,17 @@ $ErrorActionPreference = "Stop"
 
 $head = (& git rev-parse HEAD).Trim()
 $shortHead = (& git rev-parse --short HEAD).Trim()
+$backendBuild = if (Test-Path "backend/package.json") { "PROJECT_PRESENT_BUILD_NOT_RUN" } else { "SKIPPED_NO_PROJECT" }
+$adminBuild = if (Test-Path "admin/package.json") { "PROJECT_PRESENT_BUILD_NOT_RUN" } else { "SKIPPED_NO_PROJECT" }
+
 $rawText = @"
 {
   "releaseId": "DRYRUN-$shortHead",
   "generatedAt": "WINDOWS_CHECK",
   "commit": "$head",
   "branch": "main",
-  "backendBuild": "SKIPPED_NO_PROJECT",
-  "adminBuild": "SKIPPED_NO_PROJECT",
+  "backendBuild": "$backendBuild",
+  "adminBuild": "$adminBuild",
   "miniappMirror": "RECORDED_SOURCE_COMMIT_ONLY",
   "databaseMigration": "SKIPPED_NO_MIGRATIONS",
   "deployed": false
@@ -39,8 +42,17 @@ if ($manifest.deployed -ne $false) {
   throw "Dry-run manifest must not mark deployed=true"
 }
 
-if ($manifest.backendBuild -ne "SKIPPED_NO_PROJECT" -or $manifest.adminBuild -ne "SKIPPED_NO_PROJECT") {
-  throw "Dry-run manifest should record skipped builds until projects exist"
+if ((Test-Path "backend/package.json") -and $manifest.backendBuild -ne "PROJECT_PRESENT_BUILD_NOT_RUN") {
+  throw "Dry-run manifest should record backend project presence"
+}
+if ((-not (Test-Path "backend/package.json")) -and $manifest.backendBuild -ne "SKIPPED_NO_PROJECT") {
+  throw "Dry-run manifest should record missing backend project"
+}
+if ((Test-Path "admin/package.json") -and $manifest.adminBuild -ne "PROJECT_PRESENT_BUILD_NOT_RUN") {
+  throw "Dry-run manifest should record admin project presence"
+}
+if ((-not (Test-Path "admin/package.json")) -and $manifest.adminBuild -ne "SKIPPED_NO_PROJECT") {
+  throw "Dry-run manifest should record missing admin project"
 }
 
 if ($manifest.databaseMigration -ne "SKIPPED_NO_MIGRATIONS") {