fix: remove legacy OpenRouter alias handling

[chrarnoldus]

Summary

• remove the legacy OpenRouter alias allowlist entirely
• validate model IDs against the Redis-backed OpenRouter catalog only
• preserve the existing fallback when no model metadata is available

Testing

• not run (per request; CI will validate)

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 files)

• apps/web/src/lib/ai-gateway/providers/gateway-models-cache.test.ts

Previous Review Summaries (2 snapshots, latest commit 4e1b311)

Current summary above is authoritative. Previous snapshots are kept for context only.

Previous review (commit 4e1b311)

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
apps/web/src/lib/ai-gateway/providers/gateway-models-cache.ts	117	Removing the remaining OpenRouter alias allowlist leaves gateway-models-cache.test.ts asserting that gpt-4o still bypasses Redis

Files Reviewed (1 files)

• apps/web/src/lib/ai-gateway/providers/gateway-models-cache.ts - 1 issue

Fix these issues in Kilo Cloud

Previous review (commit 344b292)

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
apps/web/src/lib/ai-gateway/providers/gateway-models-cache.ts	119	Removing gpt-4o from legacyOpenRouterAliases leaves gateway-models-cache.test.ts asserting that alias still bypasses Redis

Files Reviewed (1 files)

• apps/web/src/lib/ai-gateway/providers/gateway-models-cache.ts - 1 issue

Fix these issues in Kilo Cloud

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_{Reviewed by grok-4.6 · Input: 57.7K · Output: 4.6K · Cached: 160.9K}

_{Review guidance: REVIEW.md from base branch main}

[chrarnoldus]

Fixed in 7988fd3 by removing the obsolete test that asserted legacy aliases bypass Redis. The remaining tests cover Redis catalog acceptance, rejection, and the empty-catalog fallback.