Make the PR workflow a real gate

- continue-on-error is removed; lint, test and build each have to pass,
  and fail-fast is off so each reports on its own
- after each step the tree must be unchanged (eslint --fix,
  packageInfo.ts written by the build)
- after build, scripts/check-built-manifests.py checks the package.json
  npm receives from each build/ directory
- push-main installs with --immutable and checks the manifests too
- the auto-approve and auto-merge bots are removed

.github/workflows/auto-approve.yml

@@ -1,16 +0,0 @@
-name: bot
-
-on:
-  pull_request:
-    types: [labeled]
-
-jobs:
-  approve:
-    if: "! startsWith(github.event.head_commit.message, '[CI Skip]') && (!github.event.pull_request || github.event.pull_request.head.repo.full_name == github.repository)"
-    runs-on: ubuntu-latest
-    steps:
-      - uses: jacogr/action-approve@795afd1dd096a2071d7ec98740661af4e853b7da
-        with:
-          authors: jacogr, TarikGul
-          labels: -auto
-          token: ${{ secrets.GH_PAT_BOT }}

.github/workflows/auto-merge.yml

@@ -1,16 +0,0 @@
-name: bot
-
-on:
-  pull_request:
-    types: [labeled]
-
-jobs:
-  merge:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: jacogr/action-merge@d2d64b4545acd93b0a9575177d3d215ae3f92029
-        with:
-          checks: pr (build),pr (lint),pr (test)
-          labels: -auto
-          strategy: squash
-          token: ${{ secrets.GH_PAT_BOT }}

.github/workflows/pr-any.yml

@@ -3,8 +3,9 @@ on: [pull_request]
 
 jobs:
   pr:
-    continue-on-error: true
     strategy:
+      # Each step reports on its own; one red step must not cancel the others.
+      fail-fast: false
       matrix:
         step: ['lint', 'test', 'build']
     runs-on: ubuntu-latest
@@ -17,5 +18,16 @@ jobs:
         node-version: 'lts/*'
     - name: ${{ matrix.step }}
       run: |
+        corepack enable
         yarn install --immutable
         yarn ${{ matrix.step }}
+    # `yarn lint` runs eslint --fix and `yarn build` rewrites packageInfo.ts,
+    # so both pass on a tree they changed. The committed tree must already be
+    # what they produce.
+    - name: tree unchanged
+      run: git diff --exit-code --stat
+    # The package.json each build/ directory holds is what npm receives: entry
+    # points must exist, no ./build/ or ./cjs/cjs/ paths, no workspace: ranges.
+    - name: check built manifests
+      if: matrix.step == 'build'
+      run: python3 scripts/check-built-manifests.py .

.github/workflows/push-main.yml

@@ -5,19 +5,21 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   build:
-    if: "! startsWith(github.event.head_commit.message, '[CI Skip]')"
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-      with:
-        fetch-depth: 0
     - uses: actions/setup-node@v4
       with:
         node-version: 'lts/*'
     - name: Build
       run: |
         corepack enable
-        yarn install
+        yarn install --immutable
         yarn build
+    - name: Check built manifests
+      run: python3 scripts/check-built-manifests.py .

scripts/check-built-manifests.py

@@ -0,0 +1,99 @@
+#!/usr/bin/env python3
+"""Check the package.json the build wrote into each packages/*/build directory.
+
+This is the manifest npm receives. It fails on what broke the January 2026
+releases and wasm 7.5.19: an entry point (main, module, types, browser,
+react-native, every exports target) naming a file that is not in the build
+directory, a path with ./build/ or a doubled ./cjs/cjs/ in it, numeric keys
+inside exports (a string spread into an object), and workspace:/portal:/link:
+dependency ranges.
+
+    check-built-manifests.py <repo-dir> [package ...]
+
+Prints one line per package and exits 1 if any package fails.
+"""
+import json
+import pathlib
+import sys
+
+ENTRY_FIELDS = ('main', 'module', 'types', 'typings', 'browser', 'react-native')
+DEP_FIELDS = ('dependencies', 'peerDependencies', 'optionalDependencies')
+
+
+def targets(node, path):
+    """Yield (json-path, target string) for every string leaf under exports."""
+    if isinstance(node, str):
+        yield path, node
+    elif isinstance(node, dict):
+        for key, value in node.items():
+            yield from targets(value, f'{path}/{key}')
+    elif isinstance(node, list):
+        for i, value in enumerate(node):
+            yield from targets(value, f'{path}[{i}]')
+
+
+def numeric_keys(node, path):
+    if isinstance(node, dict):
+        for key, value in node.items():
+            if key.isdigit():
+                yield f'{path}/{key}'
+            yield from numeric_keys(value, f'{path}/{key}')
+
+
+def check(build):
+    problems = []
+    manifest = build / 'package.json'
+    if not manifest.is_file():
+        return ['no build/package.json']
+    pkg = json.loads(manifest.read_text())
+
+    def check_path(where, target):
+        if not isinstance(target, str) or not target.startswith('.'):
+            return
+        if '/build/' in target or target.startswith('./build') or '/cjs/cjs/' in target:
+            problems.append(f'{where}: suspicious path {target}')
+        if '*' in target:
+            base = build / target.split('*', 1)[0]
+            if not base.parent.exists():
+                problems.append(f'{where}: {target} has no directory')
+            return
+        if not (build / target).is_file():
+            problems.append(f'{where}: {target} does not exist')
+
+    for field in ENTRY_FIELDS:
+        value = pkg.get(field)
+        if isinstance(value, str):
+            check_path(field, value)
+    for where, target in targets(pkg.get('exports'), 'exports'):
+        check_path(where, target)
+    for where in numeric_keys(pkg.get('exports'), 'exports'):
+        problems.append(f'{where}: numeric key (a string spread into an object)')
+    for field in DEP_FIELDS:
+        for dep, rng in (pkg.get(field) or {}).items():
+            if str(rng).startswith(('workspace:', 'portal:', 'link:', 'file:')):
+                problems.append(f'{field}.{dep}: {rng}')
+    return problems
+
+
+def main():
+    repo = pathlib.Path(sys.argv[1])
+    names = sys.argv[2:]
+    builds = [repo / 'packages' / n / 'build' for n in names] if names else sorted(repo.glob('packages/*/build'))
+    failed = 0
+    for build in builds:
+        problems = check(build)
+        name = build.parent.name
+        if problems:
+            failed += 1
+            print(f'FAIL {name}')
+            for p in problems[:12]:
+                print(f'     {p}')
+            if len(problems) > 12:
+                print(f'     ... {len(problems) - 12} more')
+        else:
+            print(f'ok   {name}')
+    sys.exit(1 if failed else 0)
+
+
+if __name__ == '__main__':
+    main()