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feat(gemini): add Gemini 3.6 Flash tier routing and 3.5 Flash Lite

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Add gemini-3.6-flash tiered (high/medium/low) for Antigravity routing
via upstreamModelId "gemini-3.6-flash-tiered(level)" + thinkingLevel,
plus gemini-3.6-flash and gemini-3.5-flash-lite direct API models.

- getModelUpstreamId: split (level) suffix before lookup, re-append after
- Antigravity executor: preserve transformed body.model
- MITM extractModel: parse thinkingLevel for tiered model (default medium)
- Isolate Cloud Code endpoints: discovery (loadCodeAssist/onboardUser/
  quota) on PROD cloudcode-pa, chat transport on daily-cloudcode-pa
  to bypass prod 429
This commit is contained in:
Phuong Lambert
2026-07-23 16:33:03 +07:00
committed by decolua
parent 3c17d3406b
commit 783e271c16
15 changed files with 236 additions and 65 deletions
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2
open-sse/providers/shared.js
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@@ -58,7 +58,7 @@ export const ANTHROPIC_COMPAT_BASE = "https://api.anthropic.com/v1";
// Keep this static even when 9router runs on Linux: the provider profile is
// intentionally matching the IDE client, not the server host.
export const ANTIGRAVITY_IDE_VERSION = "2.1.1";
export const ANTIGRAVITY_IDE_BASE_URL = "https://cloudcode-pa.googleapis.com";
export const ANTIGRAVITY_IDE_BASE_URL = "https://daily-cloudcode-pa.googleapis.com";
export const ANTIGRAVITY_IDE_USER_AGENT = `antigravity/ide/${ANTIGRAVITY_IDE_VERSION} darwin/arm64`;
// Antigravity OAuth client credentials (public CLI client — duplicated in usage.js + src/lib/oauth)