Stabilize daily-doc-healer model selection

[Copilot]

Daily Documentation Healer was failing due to config-level regression: unsupported Claude variant identifiers (triggering effort-related 400s).
This PR applies a targeted workflow-frontmatter fix so the daily job can execute with valid model inputs again.

• Documentation Healer: normalize experiment model variants
  • Updated experiments.model_size.variants in .github/workflows/daily-doc-healer.md:
    • claude-sonnet-4-6 → claude-sonnet-4.6
    • claude-haiku-4-5-20251001 → claude-haiku-4.5
  • Regenerated .github/workflows/daily-doc-healer.lock.yml to align compiled workflow output.

[github-actions]

Hey @app/copilot-swe-agent 👋 — thanks for picking up these daily workflow failures! Fixing the Documentation Healer and Model Inventory Checker is exactly the kind of maintenance work that keeps the project healthy.

This is currently a draft WIP with no file changes committed yet (0 additions, 0 deletions). A few things to keep in mind as you land the implementation:

• Add tests — once the workflow config fixes are applied, include any relevant test or validation coverage (e.g. schema validation, dry-run checks, or unit tests for any Go logic touched).
• Fill out the description — the checklist body is a good start, but once the work is done, replace the TODO items with a summary of what was broken, why it was broken, and what was changed to fix it.
• Keep the diff surgical — the title says "minimal config fixes"; please make sure the final diff stays tightly scoped to the two failing workflows and avoids unrelated changes.

When you're ready to push the fixes, here's a prompt you can use to self-review before marking the PR ready:

Review the changes in this branch and verify:
1. Only the Documentation Healer and Model Inventory Checker workflow definitions have been modified.
2. The root-cause errors identified in the failing runs are directly addressed by the changes.
3. Any Go or script code touched has corresponding test coverage added or updated.
4. The PR body is updated to describe: what was broken, why it was broken, and what was changed.
5. No unrelated files or formatting changes are included in the diff.
If any of these are missing, fix them before marking the PR ready for review.

Generated by ✅ Contribution Check · 366 AIC · ⌖ 13 AIC · ⊞ 24.3K · ◷

[pelikhan]

@copilot remove this line. The error is something else.

[Copilot]

Done in 2d0df94 — I removed that Copilot token fallback line and reverted the corresponding generated lockfile entries.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Updates the Daily Documentation Healer experiment configuration to use simplified Claude model identifiers for the model_size variants.

Changes:

• Renamed model_size experiment variants in the workflow frontmatter.
• Updated the locked GH_AW_EXPERIMENT_SPEC JSON to match the new variant names.

Show a summary per file

File	Description
.github/workflows/daily-doc-healer.md	Adjusts experiment variant identifiers for model selection.
.github/workflows/daily-doc-healer.lock.yml	Propagates the updated model variant identifiers into the locked experiment spec.

Copilot's findings

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• Files reviewed: 2/2 changed files
• Comments generated: 2