fix(ci): 限制仅 main 部署并加固 IMAGE_TAG 传递

- lpt-ai 仅 main/master 可部署；dev/prod 靠 environment 区分 namespace
- IMAGE_TAG 写 env 文件 + 工作区文件兜底

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
     inputs:
       environment:
-        description: '部署环境'
+        description: '部署环境（本仓库仅 main 分支；dev/prod 均从 main 部署）'
         required: true
         type: choice
         options:
@@ -20,25 +20,70 @@ jobs:
   build-and-deploy:
     runs-on: ubuntu-latest
     steps:
+      - name: Validate branch ↔ environment
+        run: |
+          set -euo pipefail
+          REF="${{ gitea.ref }}"
+          BRANCH="${REF#refs/heads/}"
+          if [[ "$REF" == refs/tags/* ]]; then
+            echo "ERROR: 请从分支触发部署，不要用 tag。当前 ref=$REF"
+            exit 1
+          fi
+          ENV="${{ inputs.environment }}"
+          echo "branch=$BRANCH environment=$ENV sha=${{ gitea.sha }}"
+          # lpt-ai 仅维护 main：dev/prod 都从 main 出包，靠 environment 区分 namespace/镜像 tag
+          case "$BRANCH" in
+            main|master)
+              echo "OK: lpt-ai 从 $BRANCH 部署到 $ENV"
+              ;;
+            *)
+              echo "ERROR: lpt-ai 只能从 main/master 部署，当前分支是 '$BRANCH'"
+              exit 1
+              ;;
+          esac
+          case "$ENV" in
+            dev|prod) ;;
+            *)
+              echo "ERROR: 未知 environment=$ENV"
+              exit 1
+              ;;
+          esac
+
       - name: Checkout code
         run: |
-          git clone $REPO_URL .
-          git checkout ${{ gitea.sha }}
+          set -euo pipefail
+          git clone "$REPO_URL" .
+          git checkout "${{ gitea.sha }}"
 
       - name: Login to Docker Registry
         run: |
-          echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login $REGISTRY -u "${{ secrets.REGISTRY_USERNAME }}" --password-stdin
+          set -euo pipefail
+          echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login "$REGISTRY" -u "${{ secrets.REGISTRY_USERNAME }}" --password-stdin
 
       - name: Build & Push Docker image
         run: |
-          TAG=${{ gitea.sha }}-$(date +%s)
-          docker build -t $REGISTRY/$APP:$TAG -t $REGISTRY/$APP:${{ inputs.environment }} .
-          docker push $REGISTRY/$APP:$TAG
-          docker push $REGISTRY/$APP:${{ inputs.environment }}
-          echo "IMAGE_TAG=$TAG" >> $GITHUB_ENV
+          set -euo pipefail
+          ENV="${{ inputs.environment }}"
+          TAG="${{ gitea.sha }}-$(date +%s)"
+          echo "Building $REGISTRY/$APP:$TAG (env tag=$ENV)"
+          docker build -t "$REGISTRY/$APP:$TAG" -t "$REGISTRY/$APP:$ENV" .
+          docker push "$REGISTRY/$APP:$TAG"
+          docker push "$REGISTRY/$APP:$ENV"
+          if [ -n "${GITHUB_ENV:-}" ]; then
+            echo "IMAGE_TAG=$TAG" >> "$GITHUB_ENV"
+          fi
+          if [ -n "${GITEA_ENV:-}" ]; then
+            echo "IMAGE_TAG=$TAG" >> "$GITEA_ENV"
+          fi
+          echo "$TAG" > image_tag.txt
+          if [ -n "${{ runner.temp }}" ]; then
+            echo "$TAG" > "${{ runner.temp }}/image_tag.txt" || true
+          fi
+          echo "IMAGE_TAG=$TAG"
 
       - name: Setup kubectl
         run: |
+          set -euo pipefail
           curl -sLO "https://dl.k8s.io/release/v1.30.0/bin/linux/amd64/kubectl"
           chmod +x kubectl
           mv kubectl /usr/local/bin/
@@ -47,39 +92,62 @@ jobs:
 
       - name: Create/Update imagePullSecret
         run: |
+          set -euo pipefail
           kubectl create secret docker-registry regcred \
-            --docker-server=$REGISTRY \
+            --docker-server="$REGISTRY" \
             --docker-username="${{ secrets.REGISTRY_USERNAME }}" \
             --docker-password="${{ secrets.REGISTRY_PASSWORD }}" \
-            -n lpt-${{ inputs.environment }} \
+            -n "lpt-${{ inputs.environment }}" \
             --dry-run=client -o yaml | kubectl apply -f -
 
       - name: Deploy to K8s
         run: |
-          kubectl set image deployment/$APP $APP=$REGISTRY/$APP:$IMAGE_TAG -n lpt-${{ inputs.environment }} --record
-          kubectl rollout status deployment/$APP -n lpt-${{ inputs.environment }} --timeout=5m
+          set -euo pipefail
+          ENV="${{ inputs.environment }}"
+          IMAGE_TAG="${IMAGE_TAG:-}"
+          if [ -z "$IMAGE_TAG" ] && [ -f image_tag.txt ]; then
+            IMAGE_TAG="$(cat image_tag.txt)"
+          fi
+          if [ -z "$IMAGE_TAG" ] && [ -f "${{ runner.temp }}/image_tag.txt" ]; then
+            IMAGE_TAG="$(cat "${{ runner.temp }}/image_tag.txt")"
+          fi
+          if [ -z "$IMAGE_TAG" ]; then
+            echo "ERROR: IMAGE_TAG 为空，无法部署"
+            exit 1
+          fi
+          echo "Deploying $REGISTRY/$APP:$IMAGE_TAG -> namespace lpt-$ENV"
+          kubectl set image "deployment/$APP" \
+            "$APP=$REGISTRY/$APP:$IMAGE_TAG" \
+            -n "lpt-$ENV" --record
+          kubectl rollout status "deployment/$APP" \
+            -n "lpt-$ENV" --timeout=5m
 
       - name: Debug on failure
         if: failure()
         run: |
+          ENV="${{ inputs.environment }}"
           echo "=== Deployment Status ==="
-          kubectl get deployment $APP -n lpt-${{ inputs.environment }}
+          kubectl get deployment "$APP" -n "lpt-$ENV" || true
           echo ""
           echo "=== Pod Status ==="
-          kubectl get pods -n lpt-${{ inputs.environment }} -l app=$APP
+          kubectl get pods -n "lpt-$ENV" -l "app=$APP" || true
           echo ""
           echo "=== Recent Events ==="
-          kubectl get events -n lpt-${{ inputs.environment }} --sort-by='.lastTimestamp' | tail -20
+          kubectl get events -n "lpt-$ENV" --sort-by='.lastTimestamp' | tail -20 || true
           echo ""
           echo "=== Pod Describe (latest) ==="
-          POD=$(kubectl get pods -n lpt-${{ inputs.environment }} -l app=$APP --sort-by=.metadata.creationTimestamp -o jsonpath='{.items[-1].metadata.name}')
-          kubectl describe pod $POD -n lpt-${{ inputs.environment }} || true
-          echo ""
-          echo "=== Pod Logs (latest) ==="
-          kubectl logs $POD -n lpt-${{ inputs.environment }} --tail=50 || true
+          POD=$(kubectl get pods -n "lpt-$ENV" -l "app=$APP" --sort-by=.metadata.creationTimestamp -o jsonpath='{.items[-1].metadata.name}' 2>/dev/null || true)
+          if [ -n "${POD:-}" ]; then
+            kubectl describe pod "$POD" -n "lpt-$ENV" || true
+            echo ""
+            echo "=== Pod Logs (latest) ==="
+            kubectl logs "$POD" -n "lpt-$ENV" --tail=50 || true
+          fi
 
       - name: Rollback on failure
         if: failure()
         run: |
-          kubectl rollout undo deployment/$APP -n lpt-${{ inputs.environment }}
-          kubectl rollout status deployment/$APP -n lpt-${{ inputs.environment }}
+          set -euo pipefail
+          ENV="${{ inputs.environment }}"
+          kubectl rollout undo "deployment/$APP" -n "lpt-$ENV" || true
+          kubectl rollout status "deployment/$APP" -n "lpt-$ENV" || true