ci-pipeline-cleanup Phase 1: extract 20 regression guards to scripts/ci-guards/

Bundle: ci-pipeline-cleanup, Phase 1.

Pure relocation — no behavior change. Each guard's bash logic is
byte-identical to the prior inline version; the only changes are:
(a) the guard becomes a sibling script under scripts/ci-guards/<id>.sh,
(b) ci.yml's per-guard step is replaced by a single loop step that
iterates all scripts.

20 scripts extracted (alphabetized):
  B-1-orphan-crud.sh, D-1-D-2-statusbadge-phantom.sh,
  G-1-jwt-auth-literal.sh, G-2-api-key-hash-json.sh,
  G-3-env-docs-drift.sh, H-001-bare-from.sh, H-009-readme-jwt.sh,
  L-001-insecure-skip-verify.sh, L-1-bulk-action-loop.sh,
  M-012-no-root-user.sh, P-1-documented-orphan-fns.sh,
  S-1-hardcoded-source-counts.sh, S-2-strings-contains-err.sh,
  T-1-frontend-page-coverage.sh, U-2-plaintext-healthcheck.sh,
  U-3-migration-mount.sh, bundle-8-L-015-target-blank-rel-noopener.sh,
  bundle-8-L-019-dangerously-set-inner-html.sh,
  bundle-8-M-009-bare-usemutation.sh, test-naming-convention.sh

Plus scripts/ci-guards/README.md documenting the contract:
- Each script must exit 0 on clean repo, non-zero with ::error::
  prefix on regression
- Runnable from repo root via 'bash scripts/ci-guards/<id>.sh'
- Adding a new guard: drop a new <id>.sh; CI auto-picks it up

ci.yml dropped 1488 → 557 lines (-931, -63%).

Single CI loop step now collects ALL guard failures before failing
the build instead of fail-fast — UX win for regressions that hit
two guards at once.

Two guards (QA-doc Part-count + seed-count, ci.yml lines 868-917)
deliberately NOT extracted — they move to 'make verify-docs' in
Phase 11 because they protect docs-the-operator-reads, not the
product itself.

Verification (sandbox):
- All 20 scripts pass against HEAD (chmod +x; for g in scripts/ci-guards/*.sh; do bash $g; done)
- New ci.yml YAML-parses cleanly
- Job boundaries preserved: go-build-and-test, frontend-build,
  helm-lint, deploy-vendor-e2e, deploy-vendor-e2e-windows
- Loop step appears twice (once at end of go-build-and-test, once
  at end of frontend-build) so both jobs continue running their
  set of guards

scripts/ci-guards/bundle-8-M-009-bare-usemutation.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+# scripts/ci-guards/bundle-8-M-009-bare-usemutation.sh
+#
+# Audit M-009 + M-029 Pass 1 closure:
+#
+# Pre-Bundle-8 the codebase had 56 bare useMutation sites with
+# discretionary invalidation. Bundle 8 shipped the useTrackedMutation
+# wrapper (web/src/hooks/useTrackedMutation.ts) that requires every
+# caller to declare `invalidates: QueryKey[] | 'noop'`. M-029 Pass 1
+# then migrated all 56 sites to the wrapper across 6 batches.
+#
+# This guard pins the contract going forward: every useMutation call
+# in src/ MUST be inside useTrackedMutation.ts (the wrapper itself
+# is the only legitimate caller of useMutation). Any bare useMutation
+# call elsewhere is a regression — adding a new mutation site means
+# going through the wrapper so the invalidates contract is enforced
+# per-site, not by a soft budget guard.
+#
+# If you genuinely need raw useMutation (extremely unlikely — the
+# wrapper supports invalidates: 'noop' for fire-and-forget mutations),
+# update this guard's exclusion list and document the carve-out.
+
+set -e
+# Test files (web/src/**/*.test.{ts,tsx}) are excluded so existing
+# useMutation-mocking test patterns and the wrapper's own unit
+# tests don't trip the production guard — symmetric with L-015
+# and L-019 above.
+BARE=$(grep -rnE '\buseMutation\(' web/src/ 2>/dev/null \
+  | grep -v 'web/src/hooks/useTrackedMutation\.ts' \
+  | grep -vE '\.test\.(ts|tsx)(:[0-9]+)?:' \
+  || true)
+if [ -n "$BARE" ]; then
+  echo "::error::M-009 hard-zero regression: bare useMutation() call(s) outside the wrapper:"
+  echo "$BARE"
+  echo
+  echo "Every mutation must go through useTrackedMutation"
+  echo "(web/src/hooks/useTrackedMutation.ts) with explicit"
+  echo "invalidates: QueryKey[] | 'noop'. See file header for usage."
+  exit 1
+fi
+# Sanity counts (informational, not a gate).
+TRACKED=$(grep -rcE '\buseTrackedMutation\(' web/src/ 2>/dev/null | awk -F: '{s+=$2} END{print s}')
+INVALIDATIONS=$(grep -rcE 'invalidateQueries|setQueryData|removeQueries|invalidates:' web/src/ 2>/dev/null | awk -F: '{s+=$2} END{print s}')
+echo "M-009 bare-usemutation: clean (wrapper-internal call + test files excluded)."
+echo "M-009 informational: useTrackedMutation sites = $TRACKED; invalidation surface = $INVALIDATIONS."