Release v3.8.39 (#5164)

* chore(release): open v3.8.39 development cycle

* docs(changelog): backfill 5 v3.8.38 bullets merged after release finalize

These PRs squash-merged into release/v3.8.38 between the CHANGELOG finalize
(ff57be32f) and the merge-to-main (ae6e2342d), so they shipped in the v3.8.38
tag but had no bullet:

- feat(compression): Ionizer engine (lossy JSON-array sampling + CCR) (#5148)
- fix(sse): preserve non-stream reasoning fields (#5155, @rdself)
- fix(i18n): add missing English UI labels (#5153, @rdself)
- test(combo): gated live smoke (#5151) + release-expectations refresh (#5150, @KooshaPari)

(#5129 exact-host Anthropic baseUrl is already covered by the #5130 bullet — same CodeQL #674.)
Synced 41 i18n CHANGELOG mirrors.

* feat(compression): TOON best-of-N candidate encoder + encoder A/B table (#5163)

Integrated into release/v3.8.39. TOON best-of-N candidate encoder (GCF default, fail-open). 17/17 unit tests pass on merge result; CI reds were base-stale + Quality Ratchet DRIFT.

* fix(zenmux): normalize vendor-prefixed GLM system roles (#5158)

Integrated into release/v3.8.39. ZenMux vendor-prefixed GLM system-role normalization; 12/12 role-normalizer tests pass on merge result. CI reds base-stale.

* [codex] fix xAI OAuth test and reasoning effort (#5157)

Integrated into release/v3.8.39. xAI reasoning-effort normalization (max/xhigh→high) + OAuth test config; 46/46 xai-translator tests pass on merge result. CI reds base-stale.

* docs(i18n): add Traditional Chinese (zh-TW) README and update zh-CN to latest (#5162)

Integrated into release/v3.8.39. Traditional Chinese (zh-TW) README + zh-CN refresh; docs-only.

* test(security): guard PII redaction stays opt-in (default off) + Hard Rule #20 (#5159)

Integrated into release/v3.8.39. PII opt-in regression guard + Hard Rule #20; rebased to strip base-drift (+81/-1). 5/5 guard tests pass; flip-proof verified.

* test(combo): deterministic context-relay universal-handoff coverage (closes phase-2 TODO) (#5168)

Integrated into release/v3.8.39. Deterministic context-relay universal-handoff coverage (3 tests); 3/3 pass on merge result.

* docs(i18n): full sync zh-TW and zh-CN README with canonical English v3.8.39 (#5171)

Integrated into release/v3.8.39. Full zh-TW docs tree + zh-CN sync with canonical English v3.8.39; docs-only.

* fix(serve): honour HOSTNAME from .env instead of hardcoding 0.0.0.0 (#5134) (#5170)

Integrated into release/v3.8.39. HOSTNAME env override in serve (#5134) + regression test (4/4, TDD flip-proof verified).

* fix(sse): resolve nameless deepseek-web tool blocks via parameter-schema match (#5154) (#5173)

Integrated into release/v3.8.39. Schema-based nameless deepseek-web tool-block resolution (#5154); 6/6 tests pass on merge result (incl. ambiguous/no-match negatives + named-tag no-regression).

* fix(sse): normalize array user content for Command Code to avoid upstream 400 (#5166) (#5174)

Integrated into release/v3.8.39. Normalize array user content for Command Code (#5166, user-array/400 symptom); 4/4 tests pass on merge result.

* fix(sse): defer </think> close so it never leaks before tool_calls (#5123) (#5175)

Integrated into release/v3.8.39. Defer </think> close so it never leaks before tool_calls (#5123); 4/4 tests pass (incl. #4633 no-regression). CHANGELOG synced to keep all 3 v3.8.39 fixes.

* fix(dashboard): use amber for home update-step warning icon (#5176)

Integrated into release/v3.8.39. Amber for home update-step warning icon; 1/1 UI test.

* fix(api): LAN/Tailscale dashboard — host-aware CSP + GET-exempt version route + combo field errors (#5083) (#5177)

Integrated into release/v3.8.39. Host-aware CSP (ReDoS/injection-safe host validation) + GET-exempt /api/system/version (POST/spawn stays LOCAL_ONLY, exact-match safe-methods-only) + COMBO_002 firstField. 44/44 tests + route-guard membership gate green. CHANGELOG synced to keep all 4 v3.8.39 fixes.

* fix(api): replace #5083 global middleware CSP with declarative ws: scheme (#5083)

Follow-up to PR #5177 (merged): that version implemented the LAN-CSP fix (Bug 1)
with a new global `src/middleware.ts` + `src/server/csp.ts`, which contradicts the
project's documented architecture — 'No global Next.js middleware — interception is
route-specific' (CLAUDE.md / AGENTS.md) — and was merged unverified (middleware vs
next.config header precedence was never confirmed in a real build).

This replaces that approach with the minimal, declarative equivalent:
  • next.config.mjs: connect-src now permits the bare `ws:` scheme (symmetric with the
    bare `wss:` already allowed) so the dashboard can reach its own Live WS server from
    a LAN/Tailscale host. No middleware.
  • Removes src/middleware.ts, src/server/csp.ts, and tests/unit/csp-host-aware.test.ts.
  • Adds tests/unit/csp-lan-ws-5083.test.ts (incl. a guard asserting src/middleware.ts
    does NOT exist, so the global-middleware approach cannot silently return).

Bugs 2 (GET-exempt /api/system/version) and 3 (COMBO_002 field surfacing) from #5177
are unaffected and remain in place.

Co-authored-by: KooshaPari <KooshaPari@users.noreply.github.com>

* test(combo): end-to-end quota-share DRR routing-decision coverage (matrix parity) (#5179)

Integrated into release/v3.8.39. Quota-share DRR routing-decision coverage (matrix parity); 2/2 pass on merge result.

* feat(agent-bridge): graceful cert-install fallback with manual guide for containers (#4546) (#5178)

Integrated into release/v3.8.39. Agent-bridge graceful cert-install fallback + manual guide (#4546); 6/6 tests pass on merge result.

* fix(antigravity): family-scoped quota lockout (gemini/claude buckets) (#5180)

Integrated into release/v3.8.39 — family-scoped antigravity quota lockout. Rebased from v3.8.37 + validated (vitest 5/5, typecheck clean, full combo-matrix green, model-lockout 99/0). Same-model cross-account retry (chat.ts) deferred pending live antigravity VPS validation.

* fix(cli): force NODE_ENV to match dev/start run mode in custom Next server (#5189)

Integrated into release/v3.8.39. Force NODE_ENV to match dev/start run mode in custom Next server; 2/2 source-scan+ordering tests pass on merge result.

* feat(compression): CCR ranged/grep/stats retrieval (ReDoS-safe, backward-compat) (#5187)

Integrated into release/v3.8.39. CCR ranged/grep/stats retrieval (safe-regex ReDoS guard + length/match caps); 17/17 tests pass on merge result.

* docs(combo): sync all combo/routing-strategy docs to current state + document test coverage (#5185)

Integrated into release/v3.8.39. Combo/routing-strategy docs sync; docs-only.

* fix(mcp): return 404 (not 400) for unknown Streamable HTTP session id (#5169) (#5191)

* fix(api): respect blocked Auto (Zero-Config) provider in /v1/models catalog (#5192) (#5194)

* test(combo): deterministic context-relay codex quota-handoff coverage (closes last gap) (#5195)

* test(ci): wire antigravity-quota-family under test:vitest (fix test-discovery orphan) (#5196)

* fix(oauth): antigravity login no longer hangs — fire-and-forget onboarding + bounded post-exchange (#5193)

Antigravity OAuth hang fix (no-PKCE/no-openid + bounded post-exchange + exchange-500 fix). Includes #5200 (Koosha) revert + owner rebaseline to keep documented comments. Integrated into release/v3.8.39.

* feat(oauth): remote Antigravity login via local helper + paste-credentials (#5203)

Remote Antigravity login: local helper (omniroute login antigravity) + paste-credentials. Integrated into release/v3.8.39.

* fix(translator): accept Claude Messages shape in non-stream malformed-200 guard (#5156)

Integrated into release/v3.8.39

* fix(cli): default dev bundler to Turbopack (16.2.x panic no longer reproduces) (#5206)

Integrated into release/v3.8.39

* fix(cli): auto-calibrate server V8 heap from physical RAM (#5172) (#5213)

The server was spawned with a fixed --max-old-space-size=512 (omniroute serve)
or no heap flag at all (Electron), so RAM-rich boxes still OOM-crashed under
load (Ineffective mark-compacts near heap limit ~500MB) with many providers/
accounts and large model catalogs. New calibrateHeapFallbackMb(os.totalmem())
defaults the heap to ~35% of RAM clamped [512,4096], wired into serve.mjs and
electron/main.js. Explicit OMNIROUTE_MEMORY_MB still wins (#2939 unchanged).

Also addresses #5160 (same OOM root); #5152 (docker) benefits via the same knob.

Closes #5172

* fix(proxy): coalesce fast-fail health probes (#5208)

Integrated into release/v3.8.39

* fix(proxy): close dispatchers when clearing cache (#5202)

Integrated into release/v3.8.39

* fix(cli): raise dev server Node heap limit to 8GB to prevent OOM (#5198)

Integrated into release/v3.8.39

* fix(auth): allow synthetic no-auth fallback for mimocode (#5205)

Integrated into release/v3.8.39

* fix(oauth): preserve Antigravity refresh_token on empty/omitted upstream response (#3850) (#5214)

Google's OAuth refresh tokens are non-rotating: the refresh response usually
omits refresh_token and occasionally returns it as an empty string. The
Antigravity executor used `typeof tokens.refresh_token === "string" ? ... `
which accepts "" (typeof "" === "string") and overwrote the stored token with
empty, nulling it on first refresh. Now treats non-string OR empty as absent and
preserves credentials.refreshToken, matching refreshGoogleToken semantics.

Closes #3850

* fix(responses): normalize non-array input (#5204)

Integrated into release/v3.8.39

* fix(stream): normalize safety finish reasons via shared helper (#5197)

Integrated into release/v3.8.39

* fix(request-logger): never render negative '(-100%)' compression badge (#5201)

Integrated into release/v3.8.39

* fix(combo): reject empty responses api output (#5207)

Integrated into release/v3.8.39 — combo failover now rejects empty Responses API output (validateQuality). Baseline rebaseline dropped (main-measured drift; maintainer rebaselines at release).

* fix(pwa): prefer cached navigation before offline page (#5209)

Integrated into release/v3.8.39 — PWA service worker prefers cached navigation before offline page (#5165).

* chore(release): v3.8.39 — 2026-06-28

* chore(release): rebaseline openapi+i18n coverage ratchet drift for v3.8.39

---------

Co-authored-by: Arthur Bodera <abodera@gmail.com>
Co-authored-by: Nguyen Minh <lop123thcs@gmail.com>
Co-authored-by: lunkerchen <labanchen@gmail.com>
Co-authored-by: Ankit <177378174+anki1kr@users.noreply.github.com>
Co-authored-by: KooshaPari <KooshaPari@users.noreply.github.com>
Co-authored-by: Ardem2025 <ardemb22@gmail.com>
Co-authored-by: backryun <bakryun0718@proton.me>
Co-authored-by: Anton <39598727+NomenAK@users.noreply.github.com>
Co-authored-by: KooshaPari <42529354+KooshaPari@users.noreply.github.com>
Co-authored-by: Wilson <pedbookmed@gmail.com>
Co-authored-by: Randi <55005611+rdself@users.noreply.github.com>

README.md

@@ -66,8 +66,8 @@
 </div>
 
 <div align="center">
-<b>🌐 Available in 40+ languages</b>
-<table>
+ <b>🌐 Available in 41+ languages</b>
+ <table>
   <tr>
     <td align="center"><a href="README.md">🇺🇸</a></td>
     <td align="center"><a href="docs/i18n/pt-BR/README.md">🇧🇷</a></td>
@@ -76,6 +76,7 @@
     <td align="center"><a href="docs/i18n/it/README.md">🇮🇹</a></td>
     <td align="center"><a href="docs/i18n/ru/README.md">🇷🇺</a></td>
     <td align="center"><a href="docs/i18n/zh-CN/README.md">🇨🇳</a></td>
+    <td align="center"><a href="docs/i18n/zh-TW/README.md">🇹🇼</a></td>
     <td align="center"><a href="docs/i18n/de/README.md">🇩🇪</a></td>
     <td align="center"><a href="docs/i18n/ja/README.md">🇯🇵</a></td>
     <td align="center"><a href="docs/i18n/ko/README.md">🇰🇷</a></td>
@@ -289,13 +290,13 @@ Result: 4 layers of fallback = zero downtime
 
 </div>
 
-> Recent highlights from **v3.8.20 → v3.8.38**. Full history in [`CHANGELOG.md`](CHANGELOG.md).
+> Recent highlights from **v3.8.20 → v3.8.39**. Full history in [`CHANGELOG.md`](CHANGELOG.md).
 
 - **⚖️ Quota-Share routing** — a dedicated combo strategy that spreads load across accounts by _available quota_: Deficit-Round-Robin scheduling, per-connection `max_concurrent` with cooldown-wait queueing, multi-window usage buckets (5h / 7d / per-model), per-(key,model) caps, session stickiness for prompt-cache integrity, and proactive saturation from upstream token-usage headers. → [Resilience Guide](docs/architecture/RESILIENCE_GUIDE.md)
 - **🤖 One-command CLI/agent setup** — a dedicated `setup-*` command configures each coding tool to route through OmniRoute (Claude Code, Codex, Cline, Continue, Cursor, Roo Code, Kilo Code, Crush, Goose, Qwen Code, Aider, OpenCode, Gemini CLI); `omniroute launch` / `omniroute launch-codex` are zero-config launchers. → [CLI Integrations](docs/guides/CLI-INTEGRATIONS.md)
-- **🛰️ Remote mode** — drive a remote OmniRoute from any machine with scoped access tokens (`omniroute connect` / `omniroute contexts` / `omniroute tokens`). → [Remote Mode](docs/guides/REMOTE-MODE.md)
-- **🧭 Smarter auto-routing** — OpenRouter-style `auto/<category>:<tier>` combos (e.g. `auto/coding:fast`, `auto/reasoning:pro`), a **Fusion** strategy (16th — fan out to a panel of models in parallel, then synthesize via a judge), **task-aware routing** (best-fit connection per task type), per-request `X-Route-Model` override, live Arena-ELO + models.dev model intelligence, per-step account allowlists, provider-wildcard combo steps, nested combo-ref execution, sticky weighted selection, and `web_search`-aware routing. → [Auto-Combo](docs/routing/AUTO-COMBO.md)
-- **🗜️ Pluggable compression** — an async pipeline of **9 composable engines** with Compression Studios, an LLMLingua-2 ONNX engine and a heuristic/SLM two-tier **Ultra**, RTK, delegated Anthropic Context Editing, **Output Styles** (output-axis steering: terse-prose / less-code / terse-CJK), an **adaptive context-budget dial** (escalate only as far as needed to fit the context window), per-request `x-omniroute-compression` control, an opt-in offline eval harness, one-click **Headroom** proxy lifecycle management from the dashboard (Docker sidecar supported), a synthetic **compression playground** (Play lanes + A/B Compare with USD-capped fidelity verdicts), an opt-in **per-step fidelity gate** that rejects a lossy engine before it degrades the prompt, and a unified panel with named profiles + an active-profile selector. → [Compression](docs/compression/COMPRESSION_ENGINES.md)
+- **🛰️ Remote mode** — drive a remote OmniRoute from any machine with scoped access tokens (`omniroute connect` / `omniroute contexts` / `omniroute tokens`), plus an `omniroute login antigravity` helper that runs Google "native/desktop" OAuth on your own machine and pastes a credential blob into a remote/VPS install (where the loopback redirect is unreachable). → [Remote Mode](docs/guides/REMOTE-MODE.md)
+- **🧭 Smarter auto-routing** — OpenRouter-style `auto/<category>:<tier>` combos (e.g. `auto/coding:fast`, `auto/reasoning:pro`), a **Fusion** strategy (fan out to a panel of models in parallel, then synthesize via a judge), **task-aware routing** (best-fit connection per task type), per-request `X-Route-Model` override, live Arena-ELO + models.dev model intelligence, per-step account allowlists, provider-wildcard combo steps, nested combo-ref execution, sticky weighted selection, and `web_search`-aware routing. → [Auto-Combo](docs/routing/AUTO-COMBO.md)
+- **🗜️ Pluggable compression** — an async pipeline of **9 composable engines** with Compression Studios, an LLMLingua-2 ONNX engine and a heuristic/SLM two-tier **Ultra**, RTK, delegated Anthropic Context Editing, **Output Styles** (output-axis steering: terse-prose / less-code / terse-CJK), an **adaptive context-budget dial** (escalate only as far as needed to fit the context window), per-request `x-omniroute-compression` control, an opt-in offline eval harness, one-click **Headroom** proxy lifecycle management from the dashboard (Docker sidecar supported), a synthetic **compression playground** (Play lanes + A/B Compare with USD-capped fidelity verdicts), an opt-in **per-step fidelity gate** that rejects a lossy engine before it degrades the prompt, a **best-of-N candidate encoder** (GCF vs TOON — keep whichever is shorter, with an A/B bytes/token table in the studio), **CCR ranged/grep/stats retrieval** (pull an exact byte/line slice or summary of a stored block instead of re-expanding it), and a unified panel with named profiles + an active-profile selector. → [Compression](docs/compression/COMPRESSION_ENGINES.md)
 - **🕵️ Transparent MITM decrypt (TPROXY)** — capture & translate traffic from CLIs that ignore proxy env vars, with a per-SNI certificate authority and a trust-store installer. → [MITM/TPROXY](docs/security/MITM-TPROXY-DECRYPT.md)
 - **💸 Cost telemetry everywhere** — `X-OmniRoute-*` cost/usage headers on every endpoint (including media), a non-token cost engine, a cache-HIT `X-OmniRoute-Cost-Saved` header, and per-key USD spend quotas. → [API Reference](docs/reference/API_REFERENCE.md)
 - **🧠 Memory you control** — opt-in int8 vector quantization (Qdrant + sqlite-vec), memory off by default, and a per-request `x-omniroute-no-memory` header. → [Memory](docs/frameworks/MEMORY.md)