Implement the 20-track POSIX + P2P roadmap: booter, protocol, coreutils, docs,

and seeder/kernel parity.

Booter / ctx (1.44.0)
- bareOsReadPearRuntimeSnapshotJson; hrpc stock routes documented (kernel.*,
  vfs.readText, bare_os.echo, bare_os.disk_os_hints).
- Peer admission: BARE_OS_DHT_ADDRESS_CLASS_ALLOWLIST + meta.dhtAddressClass;
  shouldAttemptPeer(peerKey, meta).
- Optional BARE_OS_VFS_WARM_CACHE_INVALIDATE_ON_APPEND on system drive cores.
- maybeMergeBareFromDrive: path dedupe + early exit when manifest keys satisfied.
- identity-account: zero UTF-8 passphrase buffer after PBKDF2 (string path).

Shell / utilities
- BARE_OS_SHELL_ERREXIT and set -e / set +e; tests in bare-os-booter/test.js.
- expand: comma-separated POSIX-style tab stops; man page + coreutils tests.

Tooling / docs
- kernel-microbench vfs: warmReplicationPathClassify sketch.
- holepunch-drift-repos suggestedCriticalRepos; sync-holepunch-clones report.
- scripts/README: pretest maintainer runbook; handbook/12 P2P vs POSIX.
- KERNEL_CONTRACT, environment appendix, PLACEHOLDER_BASELINE (multisig gate),
  compatibility matrix, posix artifacts, syscalls.example.json, seeder sync.

Requires: npm run pretest && npm test (already green in session).

docs/reference/ctx-client-helper.generated.ts

@@ -1,16 +1,16 @@
 // Auto-generated by scripts/gen-ctx-client-helper.mjs — do not edit by hand.
 
 /** Canonical `ctx` API semver from `packages/bare-os-booter/lib/bare-os-ctx-api.js`. */
-export const BARE_OS_CTX_API_CLIENT_VERSION = '1.42.0' as const
+export const BARE_OS_CTX_API_CLIENT_VERSION = '1.44.0' as const
 
 /** Relative path to the hand-maintained TypeScript contract (schema source of truth). */
 export const BARE_OS_CTX_DTS_SOURCE = 'packages/bare-os-booter/lib/bare-os-ctx.d.ts' as const
 
 /** Approximate count of `bareOs…` members in the DTS (diagnostic only; regenerate on contract edits). */
-export const BARE_OS_CTX_DTS_BAREOS_MEMBER_APPROX = 150 as const
+export const BARE_OS_CTX_DTS_BAREOS_MEMBER_APPROX = 151 as const
 
 /** Byte length of `bare-os-ctx.d.ts` when this file was generated. */
-export const BARE_OS_CTX_DTS_BYTES = 18740 as const
+export const BARE_OS_CTX_DTS_BYTES = 18977 as const
 
 /** Pointers for external client generators (OpenAPI / JSON Schema follow-ups). */
 export const BARE_OS_CTX_SCHEMA_HINT = {