feat: support static catalog prices

[MuncleUscles]

Summary

• allow static served_by rows to carry operator price metadata
• validate catalog prices and expose them on static candidates
• cover routing without metrics seed for catalog-priced providers

Tests

• lua tests/run_lua.lua
• uv run --with-requirements ../requirements.txt --with-requirements ../requirements-dev.txt pytest ../tests/test_live_wiring.py ../tests/test_sources.py
• uv run --with-requirements ../requirements.txt --with-requirements ../requirements-dev.txt pytest

Summary by CodeRabbit

• Bug Fixes
  • Improved model pricing handling by accepting either legacy or new pricing fields and consistently normalizing them for use in candidate selection.
  • Added validation to ensure input and output prices are provided together, are numeric, and are non-negative.
  • Candidates now respect catalog-based pricing during routing and filtering, even when metrics data is unavailable.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 5b3f5095-af4f-47e3-8cea-90bdf89d82ad

📥 Commits

Reviewing files that changed from the base of the PR and between ee31e81 and f698982.

📒 Files selected for processing (2)

• llm_policy/candidate.lua
• tests/unit/price_enrichment.lua

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📝 Walkthrough

Walkthrough

Model validation now accepts paired per-served-model pricing fields, static candidates emit normalized price_in/price_out values from catalog prices, and a unit test verifies routing and rejection behavior when metrics are unavailable.

Changes

Catalog price normalization

Layer / File(s)	Summary
Price validation llm_policy/candidate.lua	validate_model accepts paired input and output price fields from either the new or legacy naming and rejects incomplete, non-numeric, or negative pairs.
Static candidate pricing llm_policy/candidate.lua, tests/unit/price_enrichment.lua	build_candidate_matrix normalizes served-model prices into candidate entries, and the new unit test covers catalog-priced routing with and without metrics.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• genlayerlabs/unhardcoded-engine#20 — Updates price getters to prefer candidate price fields, which complements the new candidate price normalization in this PR.

Suggested reviewers

• jmlago

Poem

A bunny hopped through priceful lanes,
With catalog carrots and metric-free gains.
Two prices in, two prices out,
And rejected hops still leave a route. 🐰

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 33.33% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: adding support for static catalog prices.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/static-catalog-prices

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[MuncleUscles]

Closing this: the parent PR was corrected to keep operator pricing in a parent-side source instead of changing the engine/static candidate builder. No engine change is needed for this stopgap.