feat(gastown): add REVIEW.md support to refinery code review prompts

[IamCoder18]

Summary

Added REVIEW.md support to Gas Town Refinery agents, allowing them to read and follow repository-level review guidance from the workspace root. This mirrors the web implementation (PR #3183) but leverages the fact that Refineries already have the repository cloned and checked out on the feature branch, eliminating the need for API fetching.

Closes #3609

Verification

I have not manually verified.

Visual Changes

N/A

Reviewer Notes

N/A

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Executive Summary

All three previous WARNING issues are resolved: the REVIEW.md conditional logic is now clear and unambiguous in both buildBranchReviewPrompt and buildPRReviewPrompt, with explicit if-present/if-absent branching replacing the former sequential numbered steps.

Previously Flagged Issues — Now Resolved

File	Previous Issue	Status
services/gastown/src/prompts/refinery-system.prompt.ts	Default review bullets visually grouped under REVIEW.md step, risking misapplication when REVIEW.md is present	Resolved — now guarded by explicit If REVIEW.md is absent, use these default review rules: condition
services/gastown/src/prompts/refinery-system.prompt.ts	Sequential numbering in Step 2 could cause agent to execute all sub-steps unconditionally	Resolved — numbered list replaced with if/if-absent bullet structure
services/gastown/src/prompts/refinery-system.prompt.ts	Same ambiguity in buildPRReviewPrompt	Resolved — symmetric fix applied

Files Reviewed (1 file)

• services/gastown/src/prompts/refinery-system.prompt.ts

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_{Reviewed by claude-sonnet-4.6 · 349,361 tokens}

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