chore(release): v3.6.5 — stabilization and Claude Code parity finalization

CHANGELOG.md

@@ -9,26 +9,31 @@
 ### ✨ New Features
 
 - **Antigravity AI Credits Fallback:** Automatically retries with `GOOGLE_ONE_AI` credit injection when free-tier quota is exhausted. Per-account credit balance (5-hour TTL) is cached from SSE `remainingCredits` and exposed as a numeric badge in the Provider Usage dashboard (#1190 — thanks @sFaxsy)
-- **Claude Code Native Parity:** Full header/body signing parity with the Claude Code 2.1.87 OAuth client — CCH xxHash64 body signing, dynamic per-request fingerprint, bidirectional TitleCase ↔ lowercase tool name remapping (14 tools), API constraint enforcement (`temperature=1` for thinking, max 4 `cache_control` blocks, auto-inject ephemeral on last user message), and optional ZWJ obfuscation. Wired into `BaseExecutor` for automatic CCH signing on all `anthropic-compatible-cc-*` providers and into `chatCore` for synchronous parity pipeline steps (#1188 — thanks @RaviTharuma)
+- **Claude Code Native Parity:** Full header/body signing parity with the Claude Code 2.1.87 OAuth client — CCH xxHash64 body signing with singleton WASM initialization promise (fixing race conditions), dynamic per-request fingerprint, bidirectional TitleCase ↔ lowercase tool name remapping (14 tools), API constraint enforcement (`temperature=1` for thinking, max 4 `cache_control` blocks, auto-inject ephemeral on last user message), and optional ZWJ obfuscation. Wired into `BaseExecutor` for automatic CCH signing on all `anthropic-compatible-cc-*` providers and into `chatCore` for synchronous parity pipeline steps (#1188 — thanks @RaviTharuma)
 - **Per-Connection Codex Defaults:** Codex Fast Service Tier and Reasoning Effort settings are now per-connection instead of a single global toggle. Existing connections are migrated automatically on startup via an idempotent backfill migration (#1176 — thanks @rdself)
 - **Cursor Usage Dashboard:** New `getCursorUsage()` fetches quotas from Cursor's `/api/usage`, `/api/auth/me`, and `/api/subscription` endpoints. Displays standard requests, on-demand usage, and per-plan limits (Free/Pro/Business/Team). Client version bumped to `3.1.0` and `x-cursor-user-agent` header added for parity
 - **Database Health Check System:** Automated periodic SQLite integrity monitoring via `runDbHealthCheck()` — detects orphan quota/domain rows, broken combo references, stale snapshots, and invalid JSON state. Runs every 6 hours (configurable via `OMNIROUTE_DB_HEALTHCHECK_INTERVAL_MS`), with auto-repair and pre-repair backup. Exposed as **MCP tool #18** (`omniroute_db_health_check`) with Zod schemas and `autoRepair` option. Dashboard panel in Health page with status card, issue count, repaired count, and one-click repair button
 - **OpenAI Responses API Store Opt-In:** Per-connection `openaiStoreEnabled` flag controls whether the `store` field is preserved or forced to `false` on Codex Responses API requests. When enabled, `previous_response_id`, `prompt_cache_key`, `session_id`, and `conversation_id` fields are round-tripped through the Chat Completions → Responses translation, enabling multi-turn context caching on supported providers
 - **Email Privacy Toggle (Combos Page):** Global email visibility toggle (`EmailPrivacyToggle`) added to the Combos page header with responsive layout, tooltip guidance, and per-connection label masking via `pickDisplayValue()`. All combo builder options, provider connection lists, and quota screens now respect the global privacy state from `emailPrivacyStore`
+- **Stabilization Settings:** Added persistence support for `lkgpEnabled` and `backgroundDegradation` settings, integrated into `instrumentation-node.ts` for improved lifecycle awareness (#1212)
 - **xxhash-wasm dependency:** Added `xxhash-wasm@^1.1.0` for CCH signing (xxHash64 with seed `0x6E52736AC806831E`)
 
 ### 🐛 Bug Fixes
 
 - **Codex `stream: false` via Combo (ALL_ACCOUNTS_INACTIVE):** Fixed a critical bug where Codex combos returned `ALL_ACCOUNTS_INACTIVE` or empty content when the client sent `stream: false`. Root cause was triple: (1) `CodexExecutor.transformRequest()` mutated `body.stream` in-place to `true`, contaminating the combo's quality check which skipped validation thinking it was streaming; (2) the non-stream SSE parser used the wrong format (Chat Completions instead of Responses API) for Codex SSE output; (3) combo quality validation read the mutated `body.stream` instead of the client's original intent. Fixed by: cloning the body via `structuredClone()` in CodexExecutor, detecting Codex/Responses SSE format in the non-stream fallback path (with auto-translation back to Chat Completions), and capturing `clientRequestedStream` before the combo loop
+- **Gemini CLI Tool Schema Rejection:** Fixed 400 Bad Request errors from the Google API by strictly filtering non-standard vendor extensions (starting with `x-`) and `deprecated` fields from tool parameter schemas (#1206)
+- **SOCKS5 Proxy Interop (Node.js 22):** Resolved `invalid onRequestStart method` crashes caused by `undici` version mismatches between dispatchers and the built-in fetch. Hardened `proxyFetch.ts` to strictly use the library's fetch implementation for custom dispatchers (#1219)
 - **Search Cache Coalescing with TTL=0:** Fixed a bug where providers configured with `cacheTTLMs: 0` (caching explicitly disabled) still had concurrent requests coalesced and returned `{ cached: true }`. Now each call gets its own independent upstream fetch (#1178 — thanks @sjhddh)
 - **Antigravity Credit Cache Alignment (PR #1190):** Reconciled `accountId` derivation between `AntigravityExecutor.collectStreamToResponse` and `getAntigravityUsage` to use consistent cache keys (`email || sub || "unknown"`). Previously, SSE-parsed credit balances could be written under a different key than the one read by the usage dashboard, causing stale/missing credit badges
 - **Non-streaming reasoning_content Duplication:** Fixed clients rendering duplicated reasoning panels when both `reasoning_content` and visible `content` were present in non-streaming responses. `responseSanitizer` now strips `reasoning_content` from messages that already have visible text content, preserving it only for reasoning-only messages
+- **Streaming Regression Fix:** Hardened the `sanitize` TransformStream in the combo engine to strip both literal and JSON-escaped newline sequences, eliminating leading `\n\n` prefixes in assistant responses (#1211)
+- **Gemini Empty Choice Fix:** Ensured initial assistant deltas always include an empty `content: ""` string to satisfy strict OpenAI client requirements and prevent empty choice responses in tools (#1209)
 - **Gemini Tools Sanitizer Deduplication:** Extracted shared tool conversion logic into `buildGeminiTools()` helper (`geminiToolsSanitizer.ts`), eliminating duplicate implementations between `openai-to-gemini.ts` and `claude-to-gemini.ts`. The new helper correctly handles `web_search` / `web_search_preview` tool types by emitting `googleSearch` tools with priority over function declarations
 - **Qwen/Qoder Thinking+Tool_Choice Conflict:** Added `sanitizeQwenThinkingToolChoice()` to both `DefaultExecutor` (for Qwen provider) and `QoderExecutor` to prevent provider-side 400 errors when clients send `tool_choice` alongside thinking/reasoning parameters that are mutually exclusive upstream
 - **API Key Deletion Orphan Cleanup:** Deleting an API key now also removes associated `domain_budgets` and `domain_cost_history` rows, preventing orphan data accumulation
 - **CC-compatible test assertion:** Fixed pre-existing test that expected no `cache_control` on system blocks — the billing header system block now carries `cache_control: { type: "ephemeral" }` per PR #1188 design
 - **Codex Combo Smoke Test False Positives:** Fixed combo tests incorrectly reporting `ERROR` for valid Codex streaming responses when `response.output` is empty but text deltas were emitted. The summary now falls back to accumulated delta text (#1176 — thanks @rdself)
-- **Electron NODE_PATH Resolution (Windows):** Fixed Electron desktop startup failures on Windows packaged builds caused by native modules (`better-sqlite3`) being under `app.asar.unpacked` while helpers were in `app/node_modules`. `resolveServerNodePath()` now merges both locations with deduplication and existence checks (#1172 — thanks @backryun)
+- **Electron Builder Version Mismatch:** Fixed Electron desktop startup failures on Windows packaged builds caused by native modules (`better-sqlite3`) being under `app.asar.unpacked` while helpers were in `app/node_modules`. `resolveServerNodePath()` now merges both locations with deduplication and existence checks (#1172 — thanks @backryun)
 
 ### 🔧 Internal Improvements
 

open-sse/executors/antigravity.ts

@@ -94,6 +94,7 @@ export class AntigravityExecutor extends BaseExecutor {
       "User-Agent": antigravityUserAgent(),
       "X-Goog-Api-Client": googApiClientHeader(),
       Accept: "text/event-stream",
+      "X-OmniRoute-Source": "omniroute",
     };
     // Scrub proxy/fingerprint headers that reveal non-native traffic
     return scrubProxyAndFingerprintHeaders(raw);