fix: close 48-pt LoCoMo accuracy gap with 5 plugin hook fixes (re-targeted to main)

.github/workflows/ci.yml

@@ -3,25 +3,25 @@ name: CI
 on:
   push:
     branches: [main, dev]
+  # Run on every PR regardless of base branch. The `branches` filter on
+  # pull_request only matches base, so stacked / long-lived branches
+  # (e.g. `optimizations`) would otherwise skip the whole CI job.
   pull_request:
-    branches: [main, dev]
 
 permissions:
   contents: read
   pull-requests: write
 
 jobs:
-  test:
-    name: Typecheck and Test
+  duplication:
+    # Code-duplication regression guard. Pulled out of the `test` job so
+    # the PR checks table shows a dedicated pass/fail row — reviewers see
+    # at a glance whether the change introduced duplicated code without
+    # having to open the combined "Typecheck and Test" log.
+    name: Duplication check
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v4
-        with:
-          # Full history so the "Build PR coverage comment" step can do
-          # `git diff origin/<base>...HEAD` to detect touched src/ files.
-          # Default shallow checkout (depth=1) produces "no merge base".
-          fetch-depth: 0
 
       - name: Setup Node.js
         uses: actions/setup-node@v4
@@ -31,10 +31,7 @@ jobs:
       - name: Install dependencies
         run: npm install
 
-      - name: Typecheck
-        run: npm run typecheck
-
-      - name: Duplication check (jscpd)
+      - name: Run jscpd
         # Threshold 7% is the current baseline (see .jscpd.json). The job
         # fails if a future change pushes duplication above it, so the
         # number is a regression guard — reviewers can see the exact
@@ -49,6 +46,29 @@ jobs:
           path: jscpd-report/
           if-no-files-found: ignore
 
+  test:
+    name: Typecheck and Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          # Full history so the "Build PR coverage comment" step can do
+          # `git diff origin/<base>...HEAD` to detect touched src/ files.
+          # Default shallow checkout (depth=1) produces "no merge base".
+          fetch-depth: 0
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Typecheck
+        run: npm run typecheck
+
       - name: Run tests with coverage
         # Per-file 80% thresholds for PR #60 files are declared in
         # vitest.config.ts under `coverage.thresholds`. Vitest exits non-zero