diff --git a/.gitea/workflows/block-internal-paths.yml b/.gitea/workflows/block-internal-paths.yml
index 80ffdc41..8fff3bfe 100644
--- a/.gitea/workflows/block-internal-paths.yml
+++ b/.gitea/workflows/block-internal-paths.yml
@@ -37,7 +37,7 @@ jobs:
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking
     # the PR. Follow-up PR flips this off after surfaced defects are
     # triaged.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
diff --git a/.gitea/workflows/cascade-list-drift-gate.yml b/.gitea/workflows/cascade-list-drift-gate.yml
index 929ae121..e6f6ca46 100644
--- a/.gitea/workflows/cascade-list-drift-gate.yml
+++ b/.gitea/workflows/cascade-list-drift-gate.yml
@@ -48,7 +48,7 @@ jobs:
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking
     # the PR. Follow-up PR flips this off after surfaced defects are
     # triaged.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
diff --git a/.gitea/workflows/check-migration-collisions.yml b/.gitea/workflows/check-migration-collisions.yml
index dc9970cc..991dd11a 100644
--- a/.gitea/workflows/check-migration-collisions.yml
+++ b/.gitea/workflows/check-migration-collisions.yml
@@ -45,7 +45,7 @@ jobs:
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking
     # the PR. Follow-up PR flips this off after surfaced defects are
     # triaged.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 5
     steps:
diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 41b8ceb6..e4b42688 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -126,7 +126,7 @@ jobs:
     name: Platform (Go)
     needs: changes
     runs-on: ubuntu-latest
-    # mc#664 (interim): re-mask platform-build pending fix-forward. Phase 4
+    # mc#774 (interim): re-mask platform-build pending fix-forward. Phase 4
     # (#656) flipped this to continue-on-error: false based on a Phase-3-masked
     # "green on main 2026-05-12" — the prior continue-on-error: true had
     # been hiding failing tests in workspace-server/internal/handlers/.
@@ -145,11 +145,11 @@ jobs:
     # Time-boxed Option A (90 min) did not fit the cross-cutting scope.
     # This is a sequenced revert→fix→reflip per
     # feedback_strict_root_only_after_class_a emergency clause — NOT
-    # a permanent re-mask. Re-flip blocked on mc#664 fix-forward landing.
+    # a permanent re-mask. Re-flip blocked on mc#774 fix-forward landing.
     # Other 4 #656 flips (changes, canvas-build, shellcheck, python-lint)
     # retain continue-on-error: false; only platform-build regresses.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
-    continue-on-error: true  # mc#664 fix-forward in flight; re-flip when mc#664 lands (PR #669 → rebase after #709)
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    continue-on-error: true  # mc#774 fix-forward in flight; re-flip when mc#774 lands (PR #669 → rebase after #709)
     defaults:
       run:
         working-directory: workspace-server
@@ -187,7 +187,7 @@ jobs:
           echo "::group::pendinguploads exit=$pu_exit (last 100 lines)"
           tail -100 /tmp/test-pu.log
           echo "::endgroup::"
-        # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+        # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
         continue-on-error: true
       - if: needs.changes.outputs.platform == 'true'
         name: Run tests with race detection and coverage
@@ -374,7 +374,7 @@ jobs:
   canvas-deploy-reminder:
     name: Canvas Deploy Reminder
     runs-on: ubuntu-latest
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     needs: [changes, canvas-build]
     # Only fires on direct pushes to main (i.e. after staging→main promotion).
@@ -539,7 +539,7 @@ jobs:
     # `.gitea/scripts/ci-required-drift.py::ci_job_names`).
     #
     # Phase 3 (RFC #219 §1) safety: underlying build jobs carry
-    # continue-on-error: true so their failures are masked to null (2026-05-12: re-enabled mc#664 interim)
+    # continue-on-error: true so their failures are masked to null (2026-05-12: re-enabled mc#774 interim)
     # (Gitea suppresses status reporting for CoE jobs). This sentinel
     # runs with continue-on-error: false so it always reports its
     # result to the API — without this, the required-status entry
@@ -572,7 +572,7 @@ jobs:
           import json, sys
           ns = json.load(sys.stdin)
           # Phase 3 masked: jobs with continue-on-error: true may report "failure"
-          # Remove when mc#664 handler test failures are resolved.
+          # Remove when mc#774 handler test failures are resolved.
           PHASE3_MASKED = {"platform-build"}
           # Exclude null (Phase 3 suppressed / in-flight) from the bad list.
           bad = [(k, v.get("result")) for k, v in ns.items()
diff --git a/.gitea/workflows/continuous-synth-e2e.yml b/.gitea/workflows/continuous-synth-e2e.yml
index 37b9a78d..41f8dd4a 100644
--- a/.gitea/workflows/continuous-synth-e2e.yml
+++ b/.gitea/workflows/continuous-synth-e2e.yml
@@ -90,7 +90,7 @@ jobs:
     name: Synthetic E2E against staging
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     # Bumped from 12 → 20 (2026-05-04). Tenant user-data install phase
     # (apt-get update + install docker.io/jq/awscli/caddy + snap install
diff --git a/.gitea/workflows/e2e-api.yml b/.gitea/workflows/e2e-api.yml
index 4d3080ed..5df6efff 100644
--- a/.gitea/workflows/e2e-api.yml
+++ b/.gitea/workflows/e2e-api.yml
@@ -103,7 +103,7 @@ jobs:
   detect-changes:
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     outputs:
       api: ${{ steps.decide.outputs.api }}
@@ -155,7 +155,7 @@ jobs:
     name: E2E API Smoke Test
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 15
     env:
diff --git a/.gitea/workflows/e2e-staging-canvas.yml b/.gitea/workflows/e2e-staging-canvas.yml
index 02bad3b1..fe8c78c6 100644
--- a/.gitea/workflows/e2e-staging-canvas.yml
+++ b/.gitea/workflows/e2e-staging-canvas.yml
@@ -70,7 +70,7 @@ jobs:
   detect-changes:
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     outputs:
       canvas: ${{ steps.decide.outputs.canvas }}
@@ -119,7 +119,7 @@ jobs:
     name: Canvas tabs E2E
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 40
 
diff --git a/.gitea/workflows/e2e-staging-external.yml b/.gitea/workflows/e2e-staging-external.yml
index 1e28be30..97d91aa5 100644
--- a/.gitea/workflows/e2e-staging-external.yml
+++ b/.gitea/workflows/e2e-staging-external.yml
@@ -84,7 +84,7 @@ jobs:
     name: E2E Staging External Runtime
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 25
 
diff --git a/.gitea/workflows/e2e-staging-saas.yml b/.gitea/workflows/e2e-staging-saas.yml
index b180d167..f26cda9f 100644
--- a/.gitea/workflows/e2e-staging-saas.yml
+++ b/.gitea/workflows/e2e-staging-saas.yml
@@ -88,20 +88,20 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 1
-        # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+        # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
         continue-on-error: true
 
       - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: "3.11"
-        # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+        # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
         continue-on-error: true
 
       - name: YAML validation (best-effort)
         run: |
           echo "e2e-staging-saas.yml — PR validation: workflow YAML is valid."
           echo "E2E step runs only when provisioning-critical files change."
-        # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+        # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
         continue-on-error: true
 
   # Actual E2E: runs on trunk pushes (main + staging). NOT the PR-fire-only
@@ -112,7 +112,7 @@ jobs:
     # Only runs on trunk pushes. PR paths get pr-validate instead.
     if: github.event.pull_request.base.ref == ''
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 45
     permissions:
diff --git a/.gitea/workflows/e2e-staging-sanity.yml b/.gitea/workflows/e2e-staging-sanity.yml
index 8077da76..03431ce8 100644
--- a/.gitea/workflows/e2e-staging-sanity.yml
+++ b/.gitea/workflows/e2e-staging-sanity.yml
@@ -37,7 +37,7 @@ jobs:
     name: Intentional-failure teardown sanity
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 20
 
diff --git a/.gitea/workflows/gate-check-v3.yml b/.gitea/workflows/gate-check-v3.yml
index f2e2c959..ae615d36 100644
--- a/.gitea/workflows/gate-check-v3.yml
+++ b/.gitea/workflows/gate-check-v3.yml
@@ -46,7 +46,7 @@ env:
 jobs:
   gate-check:
     runs-on: ubuntu-latest
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true  # Never block on our own detector failing
     steps:
       - name: Check out BASE ref (never PR-head under pull_request_target)
diff --git a/.gitea/workflows/handlers-postgres-integration.yml b/.gitea/workflows/handlers-postgres-integration.yml
index e0ac00d6..bb4cd81e 100644
--- a/.gitea/workflows/handlers-postgres-integration.yml
+++ b/.gitea/workflows/handlers-postgres-integration.yml
@@ -78,8 +78,8 @@ jobs:
   detect-changes:
     name: detect-changes
     runs-on: ubuntu-latest
-    # mc#664 Phase 3 (RFC §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774 Phase 3 (RFC §1): surface broken workflows without blocking.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     outputs:
       handlers: ${{ steps.filter.outputs.handlers }}
@@ -119,8 +119,8 @@ jobs:
     name: Handlers Postgres Integration
     needs: detect-changes
     runs-on: ubuntu-latest
-    # mc#664 Phase 3 (RFC §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774 Phase 3 (RFC §1): surface broken workflows without blocking.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     env:
       # Unique name per run so concurrent jobs don't collide on the
diff --git a/.gitea/workflows/harness-replays.yml b/.gitea/workflows/harness-replays.yml
index 5925adb5..c570af88 100644
--- a/.gitea/workflows/harness-replays.yml
+++ b/.gitea/workflows/harness-replays.yml
@@ -63,7 +63,7 @@ jobs:
   detect-changes:
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     outputs:
       run: ${{ steps.decide.outputs.run }}
@@ -155,7 +155,7 @@ jobs:
     name: Harness Replays
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 30
     steps:
diff --git a/.gitea/workflows/lint-continue-on-error-tracking.yml b/.gitea/workflows/lint-continue-on-error-tracking.yml
index 0bc3a503..4228466c 100644
--- a/.gitea/workflows/lint-continue-on-error-tracking.yml
+++ b/.gitea/workflows/lint-continue-on-error-tracking.yml
@@ -1,6 +1,6 @@
 name: lint-continue-on-error-tracking
 
-# Tier 2e hard-gate lint (per mc#664) — every
+# Tier 2e hard-gate lint (per mc#774) — every
 # `continue-on-error: true` in `.gitea/workflows/*.yml` must carry a
 # `# mc#NNNN` or `# internal#NNNN` tracker comment within 2 lines,
 # the referenced issue must be OPEN, and ≤14 days old.
@@ -8,7 +8,7 @@ name: lint-continue-on-error-tracking
 # Why this exists
 # ---------------
 # `continue-on-error: true` on `platform-build` had been hiding
-# mc#664-class regressions for ~3 weeks before #656 surfaced them on
+# mc#774-class regressions for ~3 weeks before #656 surfaced them on
 # 2026-05-12. A 14-day cap on tracker age forces a review cycle and
 # surfaces mask-drift within at most 14 days of the original defect.
 # Each `continue-on-error: true` gets a paper trail — close or renew.
@@ -45,12 +45,12 @@ name: lint-continue-on-error-tracking
 # close-and-flip, or document the deliberate keep-mask in a fresh
 # 14-day-renewable tracker. After main is clean for 3 days,
 # follow-up PR flips this workflow's continue-on-error to false.
-# Tracking: mc#664.
+# Tracking: mc#774.
 #
 # Cross-links
 # -----------
-# - mc#664 (the RFC that specs this lint)
-# - mc#664 (the empirical masked-3-weeks case)
+# - mc#774 (the RFC that specs this lint)
+# - mc#774 (the empirical masked-3-weeks case)
 # - feedback_chained_defects_in_never_tested_workflows
 # - feedback_behavior_based_ast_gates
 # - feedback_strict_root_only_after_class_a
@@ -96,9 +96,9 @@ jobs:
     # Phase 3 (RFC #219 §1): surface masked defects without blocking
     # PRs. Pre-existing continue-on-error: true directives on main
     # all violate this lint at first — intentional. Flip to false
-    # follow-up after main is clean for 3 days. mc#664.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
-    continue-on-error: true  # mc#664 Phase 3 mask — 14d forced-renewal cadence
+    # follow-up after main is clean for 3 days. mc#774.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    continue-on-error: true  # mc#774 Phase 3 mask — 14d forced-renewal cadence
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
       - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
diff --git a/.gitea/workflows/lint-curl-status-capture.yml b/.gitea/workflows/lint-curl-status-capture.yml
index 620fbfd1..b04d79cc 100644
--- a/.gitea/workflows/lint-curl-status-capture.yml
+++ b/.gitea/workflows/lint-curl-status-capture.yml
@@ -45,7 +45,7 @@ jobs:
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking
     # the PR. Follow-up PR flips this off after surfaced defects are
     # triaged.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
diff --git a/.gitea/workflows/lint-mask-pr-atomicity.yml b/.gitea/workflows/lint-mask-pr-atomicity.yml
index f978db4b..a32cda5d 100644
--- a/.gitea/workflows/lint-mask-pr-atomicity.yml
+++ b/.gitea/workflows/lint-mask-pr-atomicity.yml
@@ -1,6 +1,6 @@
 name: lint-mask-pr-atomicity
 
-# Tier 2d hard-gate lint (per mc#664) — blocks PRs that touch
+# Tier 2d hard-gate lint (per mc#774) — blocks PRs that touch
 # `.gitea/workflows/ci.yml` and modify ONLY ONE of {continue-on-error,
 # all-required.sentinel.needs} without a `Paired: #NNN` reference in
 # the PR body or in a commit message.
@@ -37,13 +37,13 @@ name: lint-mask-pr-atomicity
 # This workflow lands at `continue-on-error: true` (Phase 3 — surface
 # regressions without blocking PRs while the rule beds in).
 # Follow-up PR flips to `false` once we have ≥3 days of clean runs on
-# `main` and no false-positives. Tracking issue: mc#664.
+# `main` and no false-positives. Tracking issue: mc#774.
 #
 # Cross-links
 # -----------
-# - mc#664 (the RFC that specs this lint)
+# - mc#774 (the RFC that specs this lint)
 # - PR#665 / PR#668 (the empirical split-pair)
-# - mc#664 (the main-red incident the split caused)
+# - mc#774 (the main-red incident the split caused)
 # - feedback_strict_root_only_after_class_a
 # - feedback_behavior_based_ast_gates
 #
@@ -91,8 +91,8 @@ jobs:
     # Phase 3 (RFC #219 §1): surface broken shapes without blocking
     # PRs. Follow-up PR flips this to `false` once recent runs on main
     # are confirmed clean (eat-our-own-dogfood discipline mirrors
-    # PR#673's same-shape comment). Tracking: mc#664.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # PR#673's same-shape comment). Tracking: mc#774.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     steps:
       - name: Check out PR head with full history (need base SHA blobs)
diff --git a/.gitea/workflows/lint-pre-flip-continue-on-error.yml b/.gitea/workflows/lint-pre-flip-continue-on-error.yml
index ae8bfe8c..a1cbb608 100644
--- a/.gitea/workflows/lint-pre-flip-continue-on-error.yml
+++ b/.gitea/workflows/lint-pre-flip-continue-on-error.yml
@@ -4,7 +4,7 @@ name: Lint pre-flip continue-on-error
 # on any job in `.gitea/workflows/*.yml` WITHOUT proof that the affected
 # job's recent runs on the target branch (PR base) are actually green.
 #
-# Empirical class: PR #656 / mc#664. PR #656 (RFC internal#219 Phase 4)
+# Empirical class: PR #656 / mc#774. PR #656 (RFC internal#219 Phase 4)
 # flipped 5 platform-build-class jobs `continue-on-error: true → false`
 # on the basis of a "verified green on main via combined-status check".
 # But that "green" was the LIE the prior `continue-on-error: true`
@@ -13,7 +13,7 @@ name: Lint pre-flip continue-on-error
 # job-level status. The precondition the PR claimed to verify was
 # structurally fooled by the bug being flipped.
 #
-# mc#664 captured the surfaced defects (2 mutually-masked regressions):
+# mc#774 captured the surfaced defects (2 mutually-masked regressions):
 #   - Class 1: sqlmock helper drift since 2f36bb9a (24 days old)
 #   - Class 2: OFFSEC-001 contract collision since 7d1a189f (1 day old)
 #
@@ -55,7 +55,7 @@ name: Lint pre-flip continue-on-error
 #   - YAML parse error in one of the workflow files: warn-only,
 #     don't block — the YAML lint workflows catch this separately.
 #
-# Cross-links: PR#656, mc#664, PR#665 (interim re-mask),
+# Cross-links: PR#656, mc#774, PR#665 (interim re-mask),
 # Quirk #10 (internal#342 + dup #287), hongming-pc2 charter
 # §SOP-N rule (e), feedback_strict_root_only_after_class_a,
 # feedback_no_shared_persona_token_use.
@@ -99,8 +99,8 @@ jobs:
     timeout-minutes: 8
     # Phase 3 (RFC internal#219 §1): surface broken flips without blocking
     # the PR yet. Follow-up flips this to `false` once the workflow itself
-    # has clean recent runs on main. mc#664 interim — remove when CoE→false.
-    continue-on-error: true  # mc#664
+    # has clean recent runs on main. mc#774 interim — remove when CoE→false.
+    continue-on-error: true  # mc#774
     steps:
       - name: Check out PR head (full history for base-SHA access)
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
diff --git a/.gitea/workflows/lint-workflow-yaml.yml b/.gitea/workflows/lint-workflow-yaml.yml
index 3d71875b..5d2216de 100644
--- a/.gitea/workflows/lint-workflow-yaml.yml
+++ b/.gitea/workflows/lint-workflow-yaml.yml
@@ -55,7 +55,7 @@ jobs:
     # Phase 3 (RFC #219 §1): surface broken shapes without blocking PRs.
     # Follow-up PR flips this off after the 4 existing-on-main rule-2
     # (workflow_run) violations are migrated to a supported trigger.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
diff --git a/.gitea/workflows/publish-canvas-image.yml b/.gitea/workflows/publish-canvas-image.yml
index f02a4d8c..cb47e7e1 100644
--- a/.gitea/workflows/publish-canvas-image.yml
+++ b/.gitea/workflows/publish-canvas-image.yml
@@ -56,7 +56,7 @@ jobs:
     # See issue #576 + infra-lead pulse ~00:30Z.
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     steps:
       - name: Checkout
diff --git a/.gitea/workflows/publish-runtime-autobump.yml b/.gitea/workflows/publish-runtime-autobump.yml
index 1452fd81..ecdd9cad 100644
--- a/.gitea/workflows/publish-runtime-autobump.yml
+++ b/.gitea/workflows/publish-runtime-autobump.yml
@@ -55,7 +55,7 @@ jobs:
   # The actual bump work happens on the main/staging push after merge.
   pr-validate:
     runs-on: ubuntu-latest
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true  # do not block PR merge on operational failures
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
diff --git a/.gitea/workflows/railway-pin-audit.yml b/.gitea/workflows/railway-pin-audit.yml
index cb1c56c4..8508f4a8 100644
--- a/.gitea/workflows/railway-pin-audit.yml
+++ b/.gitea/workflows/railway-pin-audit.yml
@@ -51,7 +51,7 @@ jobs:
     name: Audit Railway env vars for drift-prone pins
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 10
 
diff --git a/.gitea/workflows/redeploy-tenants-on-main.yml b/.gitea/workflows/redeploy-tenants-on-main.yml
index 1dcfced5..8568b217 100644
--- a/.gitea/workflows/redeploy-tenants-on-main.yml
+++ b/.gitea/workflows/redeploy-tenants-on-main.yml
@@ -86,7 +86,7 @@ jobs:
     if: ${{ github.event.workflow_run.conclusion == 'success' }}
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 25
     steps:
diff --git a/.gitea/workflows/redeploy-tenants-on-staging.yml b/.gitea/workflows/redeploy-tenants-on-staging.yml
index 35c1a979..534d6ba8 100644
--- a/.gitea/workflows/redeploy-tenants-on-staging.yml
+++ b/.gitea/workflows/redeploy-tenants-on-staging.yml
@@ -76,7 +76,7 @@ jobs:
   redeploy:
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 25
     steps:
diff --git a/.gitea/workflows/review-check-tests.yml b/.gitea/workflows/review-check-tests.yml
index 1030a2c5..62369014 100644
--- a/.gitea/workflows/review-check-tests.yml
+++ b/.gitea/workflows/review-check-tests.yml
@@ -53,7 +53,7 @@ jobs:
         # runners with internet access to package mirrors). Falls back to GitHub
         # binary download. GitHub releases may be blocked on some runner networks
         # (infra#241 follow-up).
-        # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+        # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
         continue-on-error: true
         run: |
           if apt-get update -qq && apt-get install -y -qq jq; then
diff --git a/.gitea/workflows/runtime-pin-compat.yml b/.gitea/workflows/runtime-pin-compat.yml
index 00ab6bc0..411d8a7c 100644
--- a/.gitea/workflows/runtime-pin-compat.yml
+++ b/.gitea/workflows/runtime-pin-compat.yml
@@ -67,7 +67,7 @@ jobs:
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking
     # the PR. Follow-up PR flips this off after surfaced defects are
     # triaged.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
diff --git a/.gitea/workflows/runtime-prbuild-compat.yml b/.gitea/workflows/runtime-prbuild-compat.yml
index 6df67131..4789951f 100644
--- a/.gitea/workflows/runtime-prbuild-compat.yml
+++ b/.gitea/workflows/runtime-prbuild-compat.yml
@@ -52,7 +52,7 @@ jobs:
   detect-changes:
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     outputs:
       wheel: ${{ steps.decide.outputs.wheel }}
@@ -97,7 +97,7 @@ jobs:
     name: PR-built wheel + import smoke
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     steps:
       - name: No-op pass (paths filter excluded this commit)
diff --git a/.gitea/workflows/secret-pattern-drift.yml b/.gitea/workflows/secret-pattern-drift.yml
index b3430785..879341ae 100644
--- a/.gitea/workflows/secret-pattern-drift.yml
+++ b/.gitea/workflows/secret-pattern-drift.yml
@@ -57,7 +57,7 @@ jobs:
     name: Detect SECRET_PATTERNS drift
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     timeout-minutes: 5
     steps:
diff --git a/.gitea/workflows/sop-tier-check.yml b/.gitea/workflows/sop-tier-check.yml
index f8df187d..6df5fb7c 100644
--- a/.gitea/workflows/sop-tier-check.yml
+++ b/.gitea/workflows/sop-tier-check.yml
@@ -64,8 +64,8 @@ jobs:
   tier-check:
     runs-on: ubuntu-latest
     # BURN-IN: continue-on-error prevents AND-composition from blocking
-    # PRs during the 7-day window. Remove after 2026-05-17 (mc#664).
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # PRs during the 7-day window. Remove after 2026-05-17 (mc#774).
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     permissions:
       contents: read
@@ -90,7 +90,7 @@ jobs:
         # runners). The sop-tier-check script has its own fallback as a
         # third line of defense. continue-on-error: true ensures this step
         # failing does not block the job.
-        # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+        # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
         continue-on-error: true
         run: |
           # apt-get is the primary method — Ubuntu package mirrors are reliably
@@ -111,7 +111,7 @@ jobs:
         # continue-on-error: true at step level — job-level is ignored by Gitea
         # Actions (quirk #10, internal runbooks). Belt-and-suspenders with
         # SOP_FAIL_OPEN=1 + || true below.
-        # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+        # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
         continue-on-error: true
         env:
           GITEA_TOKEN: ${{ secrets.SOP_TIER_CHECK_TOKEN || secrets.GITHUB_TOKEN }}
diff --git a/.gitea/workflows/staging-verify.yml b/.gitea/workflows/staging-verify.yml
index 42ea3e84..a02f5f79 100644
--- a/.gitea/workflows/staging-verify.yml
+++ b/.gitea/workflows/staging-verify.yml
@@ -85,7 +85,7 @@ jobs:
   staging-smoke:
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     outputs:
       sha: ${{ steps.compute.outputs.sha }}
@@ -206,7 +206,7 @@ jobs:
     if: ${{ needs.staging-smoke.result == 'success' && needs.staging-smoke.outputs.smoke_ran == 'true' }}
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     env:
       SHA: ${{ needs.staging-smoke.outputs.sha }}
diff --git a/.gitea/workflows/sweep-aws-secrets.yml b/.gitea/workflows/sweep-aws-secrets.yml
index ebdf626f..b7c81c6c 100644
--- a/.gitea/workflows/sweep-aws-secrets.yml
+++ b/.gitea/workflows/sweep-aws-secrets.yml
@@ -61,7 +61,7 @@ jobs:
     name: Sweep AWS Secrets Manager
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     # 30 min cap, mirroring the other janitors. AWS DeleteSecret is
     # fast (~0.3s/call) so even a 100+ backlog drains in seconds
diff --git a/.gitea/workflows/sweep-cf-orphans.yml b/.gitea/workflows/sweep-cf-orphans.yml
index 5d4e7ef6..1400529d 100644
--- a/.gitea/workflows/sweep-cf-orphans.yml
+++ b/.gitea/workflows/sweep-cf-orphans.yml
@@ -71,7 +71,7 @@ jobs:
     name: Sweep CF orphans
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     # 3 min surfaces hangs (CF API stall, AWS describe-instances stuck)
     # within one cron interval instead of burning a full tick. Realistic
diff --git a/.gitea/workflows/sweep-cf-tunnels.yml b/.gitea/workflows/sweep-cf-tunnels.yml
index fcc34ad9..085534e5 100644
--- a/.gitea/workflows/sweep-cf-tunnels.yml
+++ b/.gitea/workflows/sweep-cf-tunnels.yml
@@ -55,7 +55,7 @@ jobs:
     name: Sweep CF tunnels
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     # 30 min cap. Was 5 min on the theory that the only thing that
     # could take >5min is a CF-API hang — but on 2026-05-02 a backlog
diff --git a/.gitea/workflows/test-ops-scripts.yml b/.gitea/workflows/test-ops-scripts.yml
index af4699d4..8d6f62f1 100644
--- a/.gitea/workflows/test-ops-scripts.yml
+++ b/.gitea/workflows/test-ops-scripts.yml
@@ -46,7 +46,7 @@ jobs:
     name: Ops scripts (unittest)
     runs-on: ubuntu-latest
     # Phase 3 (RFC #219 §1): surface broken workflows without blocking.
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
diff --git a/.gitea/workflows/weekly-platform-go.yml b/.gitea/workflows/weekly-platform-go.yml
index 22507e38..6bf9e199 100644
--- a/.gitea/workflows/weekly-platform-go.yml
+++ b/.gitea/workflows/weekly-platform-go.yml
@@ -31,7 +31,7 @@ jobs:
     name: Weekly Platform-Go Surface
     runs-on: ubuntu-latest
     # continue-on-error: surface only, never block
-    # mc#664: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
+    # mc#774: pre-existing continue-on-error mask; root-fix and remove, do not renew silently.
     continue-on-error: true
     defaults:
       run: