diff --git a/.gitea/workflows/merge-to-main.yml b/.gitea/workflows/merge-to-main.yml
deleted file mode 100644
index f3c8712b..00000000
--- a/.gitea/workflows/merge-to-main.yml
+++ /dev/null
@@ -1,199 +0,0 @@
-name: Merge to Main - Full Pipeline
-
-on:
-  push:
-    branches: [ main ]
-  workflow_dispatch:
-
-concurrency:
-  group: merge-main
-  cancel-in-progress: false
-
-env:
-  DOTNET_VERSION: '10.0.x'
-
-jobs:
-  stage-1-fast-gates:
-    name: "Stage 1: Fast Gates"
-    runs-on: ubuntu-latest
-    timeout-minutes: 2
-
-    steps:
-      - name: Checkout Code
-        uses: actions/checkout@v3
-
-      - name: YAML Validation
-        run: |
-          python3 -m pip install -q yamllint
-          yamllint -c "{extends: default}" .gitea/workflows/*.yml || true
-
-      - name: Secret Scanning
-        run: |
-          ! grep -r "Password=" .gitea/workflows/ --include="*.yml" | grep -v "secrets\." || exit 1
-
-      - name: JSON Validation
-        run: |
-          python3 -c "
-          import json, glob
-          for f in glob.glob('**/*.json', recursive=True):
-              try:
-                  with open(f) as file:
-                      json.load(file)
-              except Exception as e:
-                  print(f'ERROR: {f}: {e}')
-                  exit(1)
-          "
-
-      - name: Report Tier 1
-        if: success()
-        run: echo " Tier 1 (Fast Gates) passed"
-
-  stage-2-critical-gates:
-    name: "Stage 2: Critical Gates"
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    needs: stage-1-fast-gates
-
-    steps:
-      - name: Checkout Code
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - name: Setup Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: '3.10'
-
-      - name: KIS API Governance
-        run: |
-          pip install -q pyyaml
-          python3 tools/validate_no_direct_api_trading_v1.py || exit 1
-
-      - name: Database Schema Validation
-        run: python3 tools/validate_postgresql_history_contract_v1.py || exit 1
-
-      - name: Report Tier 2
-        if: success()
-        run: echo " Tier 2 (Critical Gates) passed"
-
-  stage-3-validators-parallel:
-    name: "Stage 3: Integration Tests"
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    needs: stage-2-critical-gates
-    continue-on-error: true
-
-    steps:
-      - name: Checkout Code
-        uses: actions/checkout@v3
-
-      - name: Setup Python
-        run: pip install -q pyyaml openpyxl requests
-
-      - name: Validate Specs
-        run: python3 tools/validate_specs.py || true
-
-      - name: Validate Formula Registry
-        run: python3 tools/validate_formula_registry.py || true
-
-      - name: Report Tier 3
-        if: always()
-        run: echo " Tier 3 (Integration Tests) completed"
-
-  stage-4-build:
-    name: "Stage 4: Build and Package"
-    runs-on: ubuntu-latest
-    timeout-minutes: 15
-    needs:
-      - stage-1-fast-gates
-      - stage-2-critical-gates
-      - stage-3-validators-parallel
-    if: needs.stage-1-fast-gates.result == 'success' && needs.stage-2-critical-gates.result == 'success'
-
-    outputs:
-      artifact-name: quantengine-${{ steps.metadata.outputs.commit }}
-
-    steps:
-      - name: Checkout Code
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - name: Setup .NET
-        uses: actions/setup-dotnet@v3
-        with:
-          dotnet-version: ${{ env.DOTNET_VERSION }}
-
-      - name: Generate Metadata
-        id: metadata
-        run: |
-          COMMIT=$(git rev-parse --short HEAD)
-          echo "commit=${COMMIT}" >> $GITHUB_OUTPUT
-          echo "Commit: ${COMMIT}"
-
-      - name: Restore Dependencies
-        run: dotnet restore src/dotnet/QuantEngine.Web/QuantEngine.Web.csproj
-
-      - name: Build Release
-        run: |
-          dotnet build src/dotnet/QuantEngine.Web/QuantEngine.Web.csproj \
-            -c Release --no-restore
-
-      - name: Unit Tests
-        run: |
-          dotnet test src/dotnet/QuantEngine.Core.Tests/QuantEngine.Core.Tests.csproj \
-            -c Release --no-build || true
-
-      - name: Publish and Package
-        run: |
-          dotnet publish src/dotnet/QuantEngine.Web/QuantEngine.Web.csproj \
-            -c Release --no-build -o ./publish
-
-          tar -czf quantengine-${{ steps.metadata.outputs.commit }}.tar.gz -C ./publish .
-          echo "Package ready: quantengine-${{ steps.metadata.outputs.commit }}.tar.gz"
-
-      - name: Upload Artifact
-        uses: actions/upload-artifact@v3
-        with:
-          name: quantengine-${{ github.run_number }}
-          path: quantengine-${{ steps.metadata.outputs.commit }}.tar.gz
-          retention-days: 7
-
-      - name: Report Tier 4
-        if: success()
-        run: echo " Tier 4 (Build) succeeded"
-
-  stage-5-deploy:
-    name: "Stage 5: Trigger Deploy Pipeline"
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    needs: stage-4-build
-    if: success()
-
-    steps:
-      - name: Trigger Deploy
-        run: |
-          echo "Build successful. Starting deployment via deploy-prod.yml..."
-          echo "Artifact: quantengine-${{ needs.stage-4-build.outputs.artifact-name }}"
-
-  summary:
-    name: "Pipeline Summary"
-    runs-on: ubuntu-latest
-    if: always()
-    needs:
-      - stage-1-fast-gates
-      - stage-2-critical-gates
-      - stage-3-validators-parallel
-      - stage-4-build
-      - stage-5-deploy
-
-    steps:
-      - name: Generate Summary
-        run: |
-          echo "Pipeline Execution Summary"
-          echo "Stage 1 (Fast Gates):      ${{ needs.stage-1-fast-gates.result }}"
-          echo "Stage 2 (Critical):        ${{ needs.stage-2-critical-gates.result }}"
-          echo "Stage 3 (Integration):     ${{ needs.stage-3-validators-parallel.result }}"
-          echo "Stage 4 (Build):           ${{ needs.stage-4-build.result }}"
-          echo "Stage 5 (Deploy Trigger):  ${{ needs.stage-5-deploy.result }}"