ci: extract wipe-mnesia into standalone workflows [skip ci]

Move IFT/stage Mnesia wipe out of CI pipeline choice so Gitea Actions shows them as separate dispatch workflows.

.gitea/workflows/ci.yml

@@ -21,8 +21,6 @@ on:
           - e2e-ift
           - deploy-stage
           - e2e-stage
-          - wipe-mnesia-ift
-          - wipe-mnesia-stage
 
 concurrency:
   group: eventhub-back-${{ github.ref }}
@@ -474,30 +472,3 @@ jobs:
           REGISTRY_USER: ${{ secrets.REGISTRY_USER }}
           REGISTRY_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
         run: bash scripts/run-stand-api-tests.sh stage
-
-  # Manual only: full Mnesia wipe (NOT prod). No deploy/e2e needs.
-  wipe-mnesia-ift:
-    if: github.event_name == 'workflow_dispatch' && github.event.inputs.pipeline == 'wipe-mnesia-ift'
-    runs-on: ubuntu-latest
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v4
-      - name: Full Mnesia wipe IFT
-        env:
-          SSH_HOST: ${{ secrets.IFT_SSH_HOST }}
-          SSH_USER: ${{ secrets.IFT_SSH_USER }}
-          SSH_KEY: ${{ secrets.IFT_SSH_PRIVATE_KEY }}
-        run: bash scripts/ci-full-mnesia-wipe.sh ift
-
-  wipe-mnesia-stage:
-    if: github.event_name == 'workflow_dispatch' && github.event.inputs.pipeline == 'wipe-mnesia-stage'
-    runs-on: ubuntu-latest
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v4
-      - name: Full Mnesia wipe stage
-        env:
-          SSH_HOST: ${{ secrets.STAGE_SSH_HOST }}
-          SSH_USER: ${{ secrets.STAGE_SSH_USER }}
-          SSH_KEY: ${{ secrets.STAGE_SSH_PRIVATE_KEY }}
-        run: bash scripts/ci-full-mnesia-wipe.sh stage