[instructions] Sync instruction files with release v0.83.1

[github-actions]

Summary

Syncs instruction/documentation files with release v0.83.1. Adds documentation for the models.default-ai-credits-pricing fallback field that enables self-hosted and BYOK models to work with the AWF proxy without HTTP 400 errors.

Changes

.github/aw/syntax-agentic.md

• Extended the models: frontmatter field description to document default-ai-credits-pricing (input/output in $/1M tokens) as a fallback rate for models absent from the built-in pricing table.
• Notes that setting both fields to 0 covers free/local models, and that omitting the field causes HTTP 400 unknown_model_ai_credits rejections for unrecognised models.

.github/aw/token-optimization.md

• Added a dedicated paragraph on models.default-ai-credits-pricing for self-hosted or BYOK models (e.g. Ollama, vLLM) that are absent from the built-in models.json.
• Clarifies the error consequence (HTTP 400 unknown_model_ai_credits) when the field is omitted for such models.

Impact

• Breaking: No
• Scope: Documentation only — no code changes
• Affected users: Operators running self-hosted or BYOK models (Ollama, vLLM, etc.) who need to configure AI Credit accounting

Generated by PR Description Updater for #47965 · sonnet46 · 23.9 AIC · ⌖ 7.41 AIC · ⊞ 4.8K · ◷

[github-actions]

Great work on the Instructions Janitor automation! 🤖 This PR looks ready for review.

What's being done:
You're synchronizing the agentic instruction files with changes from release v0.83.1, specifically adding documentation for the new models.default-ai-credits-pricing field. The changes are minimal (2 net lines), well-audited, and stay within size targets.

Why it's solid:

• ✅ Focused change: single new schema field documented across two files
• ✅ Audits included: size, duplication, and schema accuracy verified against v0.83.1
• ✅ Detailed description: reviewers can understand exactly what was changed and why
• ✅ Documentation-only: no dependencies or risky code changes

This PR demonstrates exactly the kind of disciplined, audited approach the project values. The schema diff audit confirms this closes a real gap in the instruction files.

Generated by ✅ Contribution Check · sonnet46 · 63.8 AIC · ⌖ 12.3 AIC · ⊞ 6.2K · ◷

[gh-aw-bot]

@copilot please run the pr-finisher skill, address any remaining review feedback on this PR, and rerun checks once the branch is up to date.

Run: https://github.com/github/gh-aw/actions/runs/30152885438

Generated by 👨‍🍳 PR Sous Chef · gpt54 · 23.3 AIC · ⌖ 8.82 AIC · ⊞ 7.1K · ◷
_{Comment /souschef to run again}

[github-actions]

🎉 This pull request is included in a new release.

Release: v0.83.3