feat(ci): add automated testing and release workflows

.github/PULL_REQUEST_TEMPLATE.md

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+## Description
+
+<!-- Provide a brief description of the changes in this PR -->
+
+## Type of Change
+
+<!-- Check the type that applies to this PR -->
+
+- [ ] 🐛 Bug fix (fixes an issue)
+- [ ] ✨ New feature (adds functionality)
+- [ ] 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] 📝 Documentation update
+- [ ] 🎨 Code style/formatting
+- [ ] ♻️ Code refactoring (no functional changes)
+- [ ] ✅ Test updates
+- [ ] 🔧 Build/config changes
+
+## Package Scope
+
+<!-- Check which package(s) this PR affects -->
+
+- [ ] JEngine.Core (`com.jasonxudeveloper.jengine.core`)
+- [ ] JEngine.Util (`com.jasonxudeveloper.jengine.util`)
+- [ ] Other (specify):
+
+## Checklist
+
+- [ ] My code follows the project's coding conventions (see [CLAUDE.md](../CLAUDE.md))
+- [ ] I have performed a self-review of my code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have added/updated XML documentation for public APIs
+- [ ] I have added/updated tests that prove my fix is effective or that my feature works
+- [ ] New and existing unit tests pass locally with my changes
+- [ ] I have used `UniTask` for async operations (not `System.Threading.Tasks.Task`)
+- [ ] My changes handle Unity domain reloads properly (if applicable to Editor code)
+
+## Commit Message Format
+
+We use **Conventional Commits** for automated changelog generation. Please format your commit messages as:
+
+```
+<type>(<scope>): <subject>
+```
+
+### Examples
+
+```bash
+feat(core): add ChaCha20 encryption support
+fix(util): resolve JAction memory leak on cancellation
+docs: update installation guide for Unity 2022.3
+refactor(core): simplify bootstrap initialization
+test(util): add coverage for JAction edge cases
+chore(ci): update GameCI Unity version to 2022.3.55f1
+```
+
+### Types
+
+- `feat:` - New feature (appears in changelog)
+- `fix:` - Bug fix (appears in changelog)
+- `docs:` - Documentation only
+- `style:` - Code style/formatting
+- `refactor:` - Code refactoring
+- `test:` - Test changes
+- `chore:` - Build/config changes
+
+### Scopes
+
+- `core` - JEngine.Core package
+- `util` - JEngine.Util package
+- `ci` - CI/CD workflows
+- `docs` - Documentation
+
+### Breaking Changes
+
+For breaking changes, add `!` after the type/scope or include `BREAKING CHANGE:` in the footer:
+
+```bash
+feat(core)!: redesign encryption API
+
+BREAKING CHANGE: EncryptionManager.Encrypt() now requires EncryptionConfig parameter
+```
+
+## Testing
+
+<!-- Describe how you tested your changes -->
+
+**Test environment:**
+- Unity version:
+- Platform(s):
+- Test mode: [ ] EditMode [ ] PlayMode [ ] Manual
+
+**Steps to test:**
+1.
+2.
+3.
+
+## Additional Notes
+
+<!-- Any additional information that reviewers should know -->

.github/workflows/pr-tests.yml

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+name: PR Tests
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+    paths:
+      - 'UnityProject/Packages/com.jasonxudeveloper.jengine.core/**'
+      - 'UnityProject/Packages/com.jasonxudeveloper.jengine.util/**'
+      - 'UnityProject/Assets/Tests/**'
+      - '.github/workflows/**'
+
+# Ensure only one test run per PR at a time
+concurrency:
+  group: pr-tests-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  run-tests:
+    name: Run Unity Tests
+    uses: ./.github/workflows/unity-tests.yml
+    secrets: inherit
+
+  comment-results:
+    name: Comment Test Results
+    needs: run-tests
+    runs-on: ubuntu-latest
+    if: always()
+    permissions:
+      pull-requests: write
+
+    steps:
+      - name: Comment PR with test results
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const testResults = `${{ needs.run-tests.outputs.test_results }}`;
+            const jobStatus = '${{ needs.run-tests.result }}';
+
+            let comment = testResults;
+
+            if (jobStatus === 'success') {
+              comment += '\n\n✅ All tests passed! The PR is ready for review.';
+            } else if (jobStatus === 'failure') {
+              comment += '\n\n❌ Some tests failed. Please fix the failing tests before merging.';
+            } else {
+              comment += '\n\n⚠️ Test execution was cancelled or encountered an error.';
+            }
+
+            comment += `\n\n<details><summary>View workflow run</summary>\n\n[Click here to view the full workflow run](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})\n\n</details>`;
+
+            // Find existing comment
+            const comments = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+            });
+
+            const botComment = comments.data.find(comment =>
+              comment.user.type === 'Bot' &&
+              comment.body.includes('Unity Test Results')
+            );
+
+            if (botComment) {
+              // Update existing comment
+              await github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: botComment.id,
+                body: comment
+              });
+            } else {
+              // Create new comment
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.issue.number,
+                body: comment
+              });
+            }
+
+      - name: Set PR check status
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const jobStatus = '${{ needs.run-tests.result }}';
+            const state = jobStatus === 'success' ? 'success' : 'failure';
+            const description = jobStatus === 'success'
+              ? 'All Unity tests passed'
+              : 'Unity tests failed';
+
+            await github.rest.repos.createCommitStatus({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              sha: context.payload.pull_request.head.sha,
+              state: state,
+              target_url: `https://github.com/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}`,
+              description: description,
+              context: 'Unity Tests'
+            });