[codex] extend ai router timeout

[0x4007]

Summary

Extends the Cloudflare router timeout for ai.ubq.fi service routes so long-running model requests can complete through the custom domain.

Root Cause

ai.ubq.fi is served through ubq.fi-router, not directly by the Deno Deploy app. The router proxied service traffic with a hardcoded 6 second timeout, then returned 502 Upstream error on timeout. Direct calls to https://ai-ubq-fi.ubiquity-dao.deno.net bypassed that router and succeeded for OCR requests taking 8-13 seconds.

Changes

• Adds explicit router timeout constants.
• Gives ai and preview-ai service routes a 120 second proxy timeout.
• Uses a 30 second default for other service routes.
• Adds test coverage for the timeout policy.

Validation

• bun install --frozen-lockfile --no-progress
• bun run type-check
• bun test

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 75cafcd0-e1b1-46f9-a860-981d55cfb7a0

📥 Commits

Reviewing files that changed from the base of the PR and between df2137b and b5b27a2.

📒 Files selected for processing (2)

• src/worker.ts
• tests/worker-routing.test.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/extend-ai-router-timeout

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[0x4007]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. 👍

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