Clean repository: organized structure and GitOps setup

- Organized root directory structure
- Moved orphan files to proper locations
- Updated .gitignore to ignore temporary files
- Set up Gitea Runner for GitOps automation
- Fixed Tailscale access issues
- Added workflow for automated Nomad deployment

.gitea/workflows/infrastructure.yml

@@ -0,0 +1,91 @@
+name: Infrastructure CI/CD
+
+on:
+  push:
+    branches: [ main, develop ]
+    paths:
+      - 'infrastructure/**'
+      - '.gitea/workflows/infrastructure.yml'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'infrastructure/**'
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    name: Validate Infrastructure
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup OpenTofu
+        uses: opentofu/setup-opentofu@v1
+        with:
+          tofu_version: 1.10.6
+
+      - name: Validate OpenTofu configurations
+        run: |
+          for dir in infrastructure/providers/*/; do
+            if [ -d "$dir" ]; then
+              echo "Validating $dir"
+              cd "$dir"
+              tofu init -backend=false
+              tofu validate
+              cd - > /dev/null
+            fi
+          done
+
+      - name: Check formatting
+        run: |
+          tofu fmt -check -recursive infrastructure/
+
+      - name: Security scan
+        run: |
+          # 这里可以添加 tfsec 或 checkov 扫描
+          echo "Security scan placeholder"
+
+  plan:
+    runs-on: ubuntu-latest
+    name: Plan Infrastructure
+    needs: validate
+    if: github.event_name == 'pull_request'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup OpenTofu
+        uses: opentofu/setup-opentofu@v1
+        with:
+          tofu_version: 1.10.6
+
+      - name: Plan infrastructure changes
+        run: |
+          cd infrastructure/environments/dev
+          tofu init
+          tofu plan -var-file="terraform.tfvars" -out=tfplan
+        env:
+          # 这里需要配置云服务商的环境变量
+          TF_VAR_environment: dev
+
+  apply:
+    runs-on: ubuntu-latest
+    name: Apply Infrastructure
+    needs: validate
+    if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup OpenTofu
+        uses: opentofu/setup-opentofu@v1
+        with:
+          tofu_version: 1.10.6
+
+      - name: Apply infrastructure changes
+        run: |
+          cd infrastructure/environments/dev
+          tofu init
+          tofu apply -var-file="terraform.tfvars" -auto-approve
+        env:
+          TF_VAR_environment: dev