CI/docs: placeholder-baseline --check, seeder↔kernel sync script and docs,

holepunch lockfile drift Markdown dashboard + doc links
- disk.os / ctx: replication_operator_sketch schema 5 + corestore stats;
  protomux extensions proc versioning; HRPC allowlist_sketch schema 3 +
  versioned stock route table; swarm_health proc + runtime caps paths
- Session: BARE_OS_HOSTNAME_SET + ctx.bareOsSetSessionHostname, hostname man,
  security_posture; export -p in shell
- kernel.ext.d: optional provides[] version conflict detection (strict boot);
  resolver parity + tests; BARE_OS_INIT_DEFER_KERNEL_EXT_GRAPH documented
- VFS/policy: mirror/aux read tests, GUEST_BARE_READ_ALL edge negative test;
  adaptive warm-cache window env documented; microbench note
- POSIX: syscalls.json schema 10, posix_fadvise no-op, getconf + conformance
  matrix sync; posix-issue7-traceability index; handbook/profile/matrix updates
- Seeder: pear.multisig hint tests; SCM_RIGHTS unit coverage extended
- Regenerated kernel bundle, seeder kernel mirror, posix dashboard, coreutils
  build/man; booter CHANGELOG maintenance row updated
Full npm test / pretest green.

packages/bare-os-seeder/test/pear-multisig-hint.test.mjs

@@ -0,0 +1,62 @@
+/**
+ * @import { test } from 'node:test'
+ */
+import assert from 'node:assert'
+import test from 'node:test'
+import { mkdir, writeFile, rm } from 'node:fs/promises'
+import path from 'node:path'
+import os from 'node:os'
+import { logPearMultisigKernelHint } from '../lib/pear-multisig-hint.js'
+
+test('logPearMultisigKernelHint skips when pear.multisig.json absent', async () => {
+  const dir = await mkdir(path.join(os.tmpdir(), `bare-os-msig-${Date.now()}`), {
+    recursive: true
+  })
+  try {
+    await logPearMultisigKernelHint(dir)
+  } finally {
+    await rm(dir, { recursive: true, force: true })
+  }
+})
+
+test('logPearMultisigKernelHint accepts minimal valid pear.multisig.json shape', async () => {
+  const dir = await mkdir(path.join(os.tmpdir(), `bare-os-msig2-${Date.now()}`), {
+    recursive: true
+  })
+  try {
+    await writeFile(
+      path.join(dir, 'pear.multisig.json'),
+      JSON.stringify({ signers: ['a', 'b'], quorum: 2 }),
+      'utf8'
+    )
+    await logPearMultisigKernelHint(dir)
+  } finally {
+    await rm(dir, { recursive: true, force: true })
+  }
+})
+
+test('logPearMultisigKernelHint warns on invalid shape', async () => {
+  const dir = await mkdir(path.join(os.tmpdir(), `bare-os-msig3-${Date.now()}`), {
+    recursive: true
+  })
+  try {
+    await writeFile(
+      path.join(dir, 'pear.multisig.json'),
+      JSON.stringify({ signers: [], quorum: 0 }),
+      'utf8'
+    )
+    const orig = console.warn
+    let saw = false
+    console.warn = (...args) => {
+      if (String(args[0] || '').includes('pear.multisig.json')) saw = true
+    }
+    try {
+      await logPearMultisigKernelHint(dir)
+    } finally {
+      console.warn = orig
+    }
+    assert.ok(saw, 'expected warn for invalid multisig shape')
+  } finally {
+    await rm(dir, { recursive: true, force: true })
+  }
+})