feat: automate dist recompilation on Renovate PRs and configure concurrency limit (#120)

### Summary of Changes

1. **Gitea Workflow (.gitea/workflows/recompile-dist.yaml)**:
   - Automates recompilation of dist/index.js on Renovate PRs.
   - Adds loop-prevention check for [skip compile].
2. **Renovate Configuration (
enovate.json)**:
   - Configures branchConcurrentLimit: 2 and prConcurrentLimit: 2.
   - Adds gitIgnoredAuthors for automated bot commits.
   - Adds rebaseWhen: 'behind-base-branch'.
   - Removes postUpgradeTasks.
3. **Test Workflow (.gitea/workflows/test.yaml)**:
   - Added pull_request trigger.
4. **Gitea-Only Setup**:
   - Removed .github/ workflows to keep workflow execution strictly on Gitea.
5. **Preferences (GEMINI.md)**:
   - Documented strict pnpm/pnpx rule.
6. **Tests**:
   - Added afterEach import in __tests__/index.test.js.

Reviewed-on: #120
Reviewed-by: LLMReview <27+autoreview@noreplay.horstenkamp.eu>

package.json

@@ -3,7 +3,7 @@
   "version": "0.2.1",
   "description": "Deploys screeps code to the official game or a private server.",
   "type": "module",
-  "packageManager": "pnpm@11.21.0",
+  "packageManager": "pnpm@11.25.0",
   "main": "index.js",
   "scripts": {
     "start": "node index.js",
@@ -18,7 +18,7 @@
   },
   "devDependencies": {
     "@vercel/ncc": "^0.44.1",
-    "@vitest/coverage-v8": "^4.1.10",
-    "vitest": "^4.1.10"
+    "@vitest/coverage-v8": "^4.1.11",
+    "vitest": "^4.1.11"
   }
 }