chore(release): v3.22.0 — TUI effort/pool/streaming (opt-in) + post-audit hardening (#166)

Consolidates #155–#165 into a minor release. Version 3.21.1 → 3.22.0.

Minor (not patch) because it adds user-facing opt-in features and new env vars
(OCP_TUI_EFFORT #156, OCP_TUI_POOL_SIZE #158, OCP_TUI_STREAM + OCP_TUI_STREAM_HOLDBACK/
_DIR/_POLL_MS #159/#160). All default OFF, so the default request path (-p /
--output-format stream-json) is byte-for-byte unchanged — no breaking change.

Release-kit walk (CLAUDE.md 5.5): all four new env vars already carry README
§ "Environment Variables" rows + dedicated § "How It Works" coverage (added by the
feature PRs); no new endpoint (TUI streaming reuses /v1/chat/completions); no
models.json change (Available Models table unchanged — #152 not merged). Version is
sourced from package.json (server.mjs VERSION = _pkg.version), so no other file needs
editing. The README:899 "pre-3.21.1" note is historical (the #148 boot-reap migration)
and stays.

Tag push (v3.22.0) triggers .github/workflows/release.yml to create the GitHub Release.

Co-authored-by: dtzp555 <dtzp555@gmail.com>
Co-authored-by: Claude <claude-opus-4-8> <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "open-claude-proxy",
-  "version": "3.21.1",
+  "version": "3.22.0",
   "description": "OCP (Open Claude Proxy) — use your Claude Pro/Max subscription as an OpenAI-compatible API for any IDE. Works with Cline, OpenCode, Aider, Continue.dev, OpenClaw, and more.",
   "type": "module",
   "bin": {