refactor(ci): drop upload-artifact from action on main

Runner fetches the composite action from @main. Propagates the
github.com-free artifact handling (host-side collect dir).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/actions/local-ci-build/action.yml

@@ -98,7 +98,12 @@ inputs:
     default: ''
 
   artifact-retention-days:
-    description: 'Days to retain uploaded artifacts in Gitea.'
+    description: >
+      Deprecated / no-op. Artifacts are no longer uploaded to the Gitea
+      Actions store (that needs the github.com-hosted upload-artifact
+      action). They stay on the host under F:\CI\Artifacts and are aged
+      out by scripts/Invoke-RetentionPolicy.ps1. Kept for caller
+      back-compat.
     required: false
     default: '14'
 
@@ -287,22 +292,34 @@ runs:
         [System.IO.File]::AppendAllText(
             $env:GITHUB_OUTPUT, "artifact-name=$artifactName`n", $utf8NoBom)
 
-    # ── Upload build artifacts on success ─────────────────────────────────────
+    # ── Report artifact location ──────────────────────────────────────────────
-    - name: Upload artifacts
+    # No actions/upload-artifact: that action's code is fetched from
+    # github.com (and v4 is GHES-incompatible, v3 deprecated). The runner
+    # host is single and its filesystem is shared across jobs, so the
+    # orchestrator's host-side collect dir IS the artifact handoff.
+    # Downstream jobs read F:\CI\Artifacts\{run_id}-{run_attempt}[-suffix]
+    # directly (see build-nsInnoUnp.yml release job).
+    - name: Report artifact location
       if: success() && inputs.skip-artifact != 'true'
-      uses: actions/upload-artifact@v3
+      shell: powershell
-      with:
+      run: |
-        name: ${{ steps.invoke-ci.outputs.artifact-name }}
+        $p = '${{ steps.invoke-ci.outputs.artifact-path }}'
-        path: ${{ steps.invoke-ci.outputs.artifact-path }}
+        if (-not (Test-Path -LiteralPath $p) -or
-        retention-days: ${{ inputs.artifact-retention-days }}
+            -not (Get-ChildItem -Force -LiteralPath $p)) {
-        if-no-files-found: error
+            throw "no artifacts at $p"
+        }
+        Write-Host "Artifacts on host: $p"
+        Get-ChildItem -Recurse -File -LiteralPath $p |
+            ForEach-Object { Write-Host "  $($_.FullName)" }
 
-    # ── Upload diagnostic logs on failure ─────────────────────────────────────
+    - name: Report diagnostic log location on failure
-    - name: Upload diagnostic logs on failure
       if: failure()
-      uses: actions/upload-artifact@v3
+      shell: powershell
-      with:
+      run: |
-        name: build-logs-${{ github.sha }}
+        $p = '${{ steps.invoke-ci.outputs.artifact-path }}'
-        path: ${{ steps.invoke-ci.outputs.artifact-path }}/*.log
+        if ($p -and (Test-Path -LiteralPath $p)) {
-        retention-days: 3
+            Write-Host "Diagnostic logs (if any) on host: $p"
-        if-no-files-found: ignore
+            Get-ChildItem -Recurse -File -Filter '*.log' -LiteralPath $p `
+                -ErrorAction SilentlyContinue |
+                ForEach-Object { Write-Host "  $($_.FullName)" }
+        }