ops(sql-runner): add whitelisted SQL workflow + stuck-leads cleanup doc

.github/workflows/sql-runner.yml — универсальный SQL-runner для прод-операций
через GitHub Actions (workflow_dispatch). Whitelist: SELECT/WITH/EXPLAIN (read-only)
+ targeted UPDATE/DELETE на 5 таблицах при confirm_mutating=true.

docs/ops/2026-05-29-stage5-stuck-leads-cleanup.md — шаблон rollback log + инструкции
для cleanup 2 застрявших supplier_leads (id=1110, 1157, ~256k failed_webhook_jobs).
Root cause: поставщик crm.bp-gr.ru шлёт B1+SMS combo,
constraint chk_supplier_projects_b1_not_for_sms запрещает (Finding 2 Stage 5).

Task 1 plan 2026-05-29-supplier-webhook-fast-fail-and-stuck-cleanup.md.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/sql-runner.yml

@@ -0,0 +1,96 @@
+name: Run whitelisted SQL on liderra.ru
+
+on:
+  workflow_dispatch:
+    inputs:
+      sql:
+        description: 'SQL query (SELECT only by default; UPDATE/DELETE need confirm_mutating=true)'
+        required: true
+        type: string
+      confirm_mutating:
+        description: 'Подтверждаю UPDATE/DELETE на проде'
+        required: false
+        default: false
+        type: boolean
+
+jobs:
+  run:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    env:
+      LIDERRA_HOST: 111.88.246.137
+      LIDERRA_USER: ubuntu
+      SQL: ${{ github.event.inputs.sql }}
+      CONFIRM_MUT: ${{ github.event.inputs.confirm_mutating }}
+
+    steps:
+      - name: Whitelist check
+        run: |
+          set -euo pipefail
+          SQL_LOWER=$(echo "$SQL" | tr '[:upper:]' '[:lower:]' | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')
+
+          # Allow: SELECT / WITH (CTE) / \d / EXPLAIN
+          READ_RE='^(select |with |explain |\\d|\\df|\\di|\\dt)'
+
+          # Mutating allowed if confirm=true: targeted UPDATE/DELETE on specific tables
+          MUTATING_RE='^(update supplier_leads|update failed_webhook_jobs|update scheduler_heartbeats|delete from failed_webhook_jobs|delete from incidents_log) '
+
+          if [[ "$SQL_LOWER" =~ $READ_RE ]]; then
+            echo "::notice::SELECT/read-only — allowed."
+            exit 0
+          fi
+
+          if [[ "$SQL_LOWER" =~ $MUTATING_RE ]]; then
+            if [[ "$CONFIRM_MUT" != "true" ]]; then
+              echo "::error::Mutating SQL requires confirm_mutating=true."
+              exit 1
+            fi
+            echo "::warning::Mutating SQL authorized."
+            exit 0
+          fi
+
+          echo "::error::SQL not in whitelist: $SQL_LOWER"
+          exit 1
+
+      - name: Setup SSH key
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.LIDERRA_SSH_KEY }}" > ~/.ssh/liderra_deploy
+          chmod 600 ~/.ssh/liderra_deploy
+          ssh-keyscan -H ${{ env.LIDERRA_HOST }} >> ~/.ssh/known_hosts 2>/dev/null
+
+      - name: Run on prod
+        run: |
+          set -o pipefail
+          SQL_B64=$(printf '%s' "$SQL" | base64 -w0)
+          ssh -i ~/.ssh/liderra_deploy ${{ env.LIDERRA_USER }}@${{ env.LIDERRA_HOST }} \
+            "SQL_B64='$SQL_B64' bash -s" <<'REMOTE' | tee /tmp/sql.log
+            SQL=$(echo "$SQL_B64" | base64 -d)
+            echo "=== Running on $(hostname) at $(date -u) ==="
+            echo "SQL: $SQL"
+            echo
+            sudo -u postgres psql -d liderra -c "$SQL"
+            RC=$?
+            echo
+            echo "=== Exit code: $RC ==="
+            exit $RC
+          REMOTE
+
+      - name: Summary
+        if: always()
+        run: |
+          {
+            echo "## SQL on prod"
+            echo
+            echo '```sql'
+            echo "$SQL"
+            echo '```'
+            echo
+            echo '```'
+            cat /tmp/sql.log 2>/dev/null
+            echo '```'
+          } >> "$GITHUB_STEP_SUMMARY"
+
+      - name: Cleanup
+        if: always()
+        run: rm -f ~/.ssh/liderra_deploy