feat(kyberforge): ground skill-audit qualitative rubric in agentskillsio spec

Add references/description-quality.md and references/body-discipline.md to
skill-audit — condensed, rubric-focused extracts from the agentskills.io
specification docs. Both files are loaded conditionally via progressive
disclosure triggers added to Step 3 (Description and Body discipline
dimensions), so the agent consults the spec source when a finding is
borderline rather than relying solely on inline heuristics developed
during the skill-write authoring cycle.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

plugins/kyberforge/skills/skill-audit/SKILL.md

@@ -38,6 +38,8 @@ Work through each dimension. Cite file and line number for every finding.
 - **Near-miss exclusions**: are "Do not use when..." clauses present if a near-miss skill could steal activations?
 - **Length**: under 1024 characters?
 
+If a description finding is borderline or the distinction between PASS and FAIL is unclear, read `references/description-quality.md`.
+
 ### Body discipline
 
 For each sentence in the body, apply: *"Would the agent get this wrong without this sentence?"* Flag any that answer "no" as padding.
@@ -46,6 +48,8 @@ For each sentence in the body, apply: *"Would the agent get this wrong without t
 - **Why rationale**: include/exclude rules explain why, not just what
 - **Control calibration**: prescriptive for fragile or critical sequences; flexible where multiple approaches are valid
 
+If uncertain whether a sentence is padding or whether a control decision is correctly calibrated, read `references/body-discipline.md`.
+
 ### Patterns
 
 Check each pattern is appropriate and correctly formed: