feat: complete rebranding to Gemini Nexus with improved UI, proxies and documentation

openspec/changes/improve-cross-platform-stability/proposal.md

@@ -20,7 +20,7 @@
 - Affected code:
   - `src/ipc/database/cloudHandler.ts`
   - `src/ipc/database/handler.ts`
-  - `src/utils/antigravityVersion.ts`
+  - `src/utils/geminiNexusVersion.ts`
   - `src/utils/paths.ts` (this stage covers default runtime configuration path only)
   - `src/types/db.ts`
 

openspec/changes/improve-cross-platform-stability/specs/ide-auth-compat/spec.md

@@ -38,5 +38,5 @@ The system SHALL use a strategy pattern to split new/legacy/dual-write injection
 The system SHALL prefer new-format injection when new-format keys are detected.
 
 #### Scenario: New-format key exists
-- **WHEN** `antigravityUnifiedStateSync.oauthToken` exists
+- **WHEN** `geminiNexusUnifiedStateSync.oauthToken` exists
 - **THEN** injection uses new format with higher priority