docs(skills): cover maintenance commands and verification

[rajanpanth]

Summary

• route blast-radius questions to \graphify affected\ and document its relation/depth controls
• surface the remaining maintenance commands in every generated skill
• add verification and recovery guidance for labeling, tree views, HTML limits, missing language extras, and OpenAI-compatible endpoints

Fixes #2535.

Validation

• uv run python -m tools.skillgen --bless
• uv run python -m tools.skillgen
• uv run python -m tools.skillgen --check
• uv run pytest tests/test_skillgen.py -q

[graphify-labs]

Graphify reviewed this change.

Looks safe to merge — no coupling regressions and no blocking issues, checked against the code graph (not a self-assessment).

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Graphify review — findings

This pull request adds two new documentation sections to the graphify skill markdown files and their corresponding expected-output test fixtures. The first section documents the graphify affected command for blast-radius/dependency queries, and the second lists less-common maintenance commands (tree, global, check-update, diagnose multigraph, merge-driver). The identical content is applied across all agent variants (agents, amp, claw, codex, copilot, droid, kilo, kiro, opencode, etc.) and the paired tools_skillgen_expected_* fixtures.

No blocking issues surfaced. 1 lower-confidence candidate did not survive cross-model review.

Analysis details — impact, health, verification

Impact & health

Graphify review

Impact — 1136 functions depend on the 1136 functions this change touches.

Health — grade A; no new coupling hotspots.

Verification — 1136 functions in the blast radius were not formally verified this run (proofs are advisory here).

Gate & verification

graphify gate

PASS — objectively clean (no health regressions, tests not run — proofs not run this pass (advisory)). Grounded, not self-assessed.

Advisory (not blocking):

• verification_scope: 1136 function(s) in the blast radius were not formally verified this run