[deep-report] Fix 3 frontmatter doc gaps: undocumented max-tool-denials, stale github-app dependencies claim, runs-on-slim macOS example misma #56575

Description

Schema Consistency Checker (#56553, findings 2-4) found three doc/schema mismatches, all verified live:

1. max-tool-denials is a real, validated frontmatter field (default 5, Copilot-SDK-only) documented in the generated schema reference (frontmatter-full.md:3299-3308) but has no section at all in the main user-facing guide docs/src/content/docs/reference/frontmatter.md.
2. That same guide's github-app fallback description (frontmatter.md:187-200) claims the fallback applies to a top-level dependencies field — no such field exists anywhere in the schema or pkg/workflow/frontmatter_types.go; this is stale wording.
3. runs-on-slim's schema-derived reference text inherits the generic github_actions_runs_on definition's prose, which still lists macos-latest-style examples, even though pkg/workflow/runs_on_validation.go:35-82 explicitly rejects macos/macos-* for both runs-on and runs-on-slim.

Expected Impact

Closes 3 concrete doc-accuracy gaps that currently mislead users: a real, useful field is undiscoverable, a nonexistent field is implied configurable, and generated reference text implies a runner option the compiler forbids.

Suggested Agent

New Agent / manual — (1) add a max-tool-denials section to frontmatter.md, (2) remove/correct the dependencies mention in the github-app fallback docs, (3) specialize runs-on-slim's schema description/examples away from the generic macOS-friendly wording.

Estimated Effort

Quick (< 1 hour) — three small, independent doc edits, no code changes.

Data Source

DeepReport analysis 2026-08-28 cycle, from Schema Consistency Checker #56553, findings 2-4.

network:
  allowed:
    - defaults
    - "api.anthropic.com"

Generated by 🔬 Deep Report · claude · agent · 131.9 AIC · ⌖ 9.14 AIC · ⊞ 12.4K · ◷

• expires on Aug 30, 2026, 1:34 AM UTC-08:00