Move Gitea workflows to repository root

.gitea/workflows/release-dry-run.yml

@@ -0,0 +1,46 @@
+name: Release Dry Run
+
+on:
+  push:
+    branches:
+      - main
+      - master
+  workflow_dispatch:
+
+jobs:
+  release-dry-run:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: opera-cache-cleaner-extension
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Verify release documentation
+        shell: bash
+        run: |
+          test -f README.md
+          test -f CHANGELOG.md
+          test -f SECURITY.md
+          test -f docs/release-checklist.md
+          test -f docs/security-review.md
+
+      - name: Check for unresolved template placeholders
+        shell: bash
+        run: |
+          if grep -RInE 'PROJECT[_]NAME|PROJECT[_]DESCRIPTION|REPOSITORY[_]OWNER|REPOSITORY[_]NAME|PACKAGE[_]NAME|ARTIFACT[_]NAME|ARTIFACT[_]OUTPUT[_]DIRECTORY|BUILD[_]COMMAND|TEST[_]COMMAND|LINT[_]COMMAND|AUDIT[_]COMMAND' . --exclude-dir=.git --exclude-dir=dist; then
+            echo "Unresolved template placeholders found."
+            exit 1
+          fi
+
+      - name: Build extension archive
+        shell: bash
+        run: |
+          rm -rf dist
+          mkdir -p dist/package
+          cp manifest.json background.js dist/package/
+          cp -R popup icons dist/package/
+          cd dist/package
+          zip -r ../opera-cache-cleaner-extension.zip .
+          test -s ../opera-cache-cleaner-extension.zip