Merge origin/main (v1.64.0.0) into garrytan/time-attack-fork-review

Both waves fixed several of the same bugs; resolutions keep whichever
shape this branch's tests pin (#2018 jq bind, #1798 set-- pattern,
stop-ack, lock errors, polyfill windowsHide) and take main's richer
codex Step 2A (it absorbed the same mktemp fix). True unions: memory-
ingest keeps main's capability-probed --include-gitignored inside our
GIT_CEILING defense; setup wraps main's Playwright platform override in
our stale-healing install lock; package.json takes main's diff@^9 and
the combined test glob (design/test + ios-qa/daemon/test, 30s timeout).
Generated SKILL.md files regenerated from resolved templates, never
hand-picked. Ship goldens refreshed; parity/carve budgets re-measured
for the summed preamble growth of both waves (itemized per entry).

.github/workflows/actionlint.yml

@@ -1,5 +1,13 @@
 name: Workflow Lint
 on: [push, pull_request]
+
+# Cancel superseded runs for the same branch (matches evals.yml,
+# windows-free-tests.yml, etc.). head_ref is set on pull_request; ref_name is
+# the fallback for push so a rapid push series doesn't pile up stale lint runs.
+concurrency:
+  group: actionlint-${{ github.head_ref || github.ref_name }}
+  cancel-in-progress: true
+
 jobs:
   actionlint:
     runs-on: ubicloud-standard-8

.github/workflows/evals.yml

@@ -51,19 +51,30 @@ jobs:
       - if: steps.check.outputs.exists == 'false'
         run: cp package.json bun.lock .github/docker/
 
+      # A fork PR's GITHUB_TOKEN only has `packages: read`, so pushing fails.
+      # Still BUILD (validates Dockerfile.ci changes), just don't publish. This
+      # job intentionally keeps no `if:` so fork PRs still get one real, honest
+      # green check here instead of a run where every job is grey.
       - if: steps.check.outputs.exists == 'false'
         uses: docker/build-push-action@v6
         with:
           context: .github/docker
           file: .github/docker/Dockerfile.ci
-          push: true
+          push: ${{ github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository }}
           tags: |
             ${{ steps.meta.outputs.tag }}
             ${{ env.IMAGE }}:latest
 
+  # Fork PRs never receive repository secrets (ANTHROPIC_API_KEY et al), so every
+  # API-calling eval fails at SDK auth before a model runs. Skip deterministically
+  # rather than leaving the outcome to Docker-cache luck: a warm cache let these
+  # run and fail, a cold one made build-image fail its push and the shards skip.
+  # Same-repo PRs, pushes, and workflow_dispatch keep full coverage. Fork work
+  # gets real coverage via a trusted base-repo branch.
   evals:
     runs-on: ${{ matrix.suite.runner || 'ubicloud-standard-8' }}
     needs: build-image
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
     container:
       image: ${{ needs.build-image.outputs.image-tag }}
       credentials:
@@ -282,7 +293,7 @@ jobs:
   report:
     runs-on: ubicloud-standard-8
     needs: evals
-    if: always() && github.event_name == 'pull_request'
+    if: always() && github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
     timeout-minutes: 5
     permissions:
       contents: read

.github/workflows/skill-docs.yml

@@ -1,5 +1,13 @@
 name: Skill Docs Freshness
 on: [push, pull_request]
+
+# Cancel superseded runs for the same branch (matches evals.yml,
+# windows-free-tests.yml, etc.). head_ref is set on pull_request; ref_name is
+# the fallback for push so a rapid push series doesn't pile up stale runs.
+concurrency:
+  group: skill-docs-${{ github.head_ref || github.ref_name }}
+  cancel-in-progress: true
+
 jobs:
   check-freshness:
     runs-on: ubicloud-standard-8