Include generated ai.txt docs in createLocalCircuitPrompt

[JYZ-LESLIE]

Summary

• fetch https://docs.tscircuit.com/ai.txt inside createLocalCircuitPrompt
• prepend the generated docs block into the system prompt when available
• make remote-doc fetch failures non-fatal so prompt generation still succeeds

This directly wires the new generated docs into prompt construction while keeping prompt creation resilient.

/claim #45

[JYZ-LESLIE]

Follow-up update: I pushed commit 21bbf81 to address the failing test check and make the suite deterministic without requiring a live OpenAI key.

What changed:

• TscircuitCoder now correctly forwards openaiClient into runAiWithErrorCorrection.
• Recursive retry path in runAiWithErrorCorrection now preserves openaiClient.
• generateRandomPrompts now accepts an optional injected client (default remains the existing OpenAI client).
• Updated tests to use deterministic mocked clients:
  • tests/tscircuitCoder.test.ts
  • tests/utils/generate-random-prompts.test.ts

Validation run locally on this branch:

• PATH="/tmp/bun-bin/bun-darwin-aarch64:$PATH" bun test --timeout 50000
• Result: 13 pass, 0 fail.

Please re-run CI and merge when convenient. Thanks!