fix(kyberforge): remove internal mechanics sentence from skill-author description

## Why

The description sentence "Handles both the full create flow (scaffold → fill →
validate) and the improve flow (signals → root cause → edit → audit)." describes
internal mechanics rather than user intent. The surrounding trigger phrases already
cover both create and improve intents, so this sentence adds no triggering value
and violates the description principle of focusing on what the user is trying to
achieve.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0147vXtL5sP6vorDdqXGJJU9

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

@@ -4,9 +4,7 @@ description: >
   Use when the user wants to create a new skill from scratch ("write a skill
   for X", "build a skill that does Y", "create a SKILL.md for Z") or improve
   an existing one ("improve this skill", "fix based on feedback", "apply these
-  audit findings", "update based on grill output"). Handles both the full
-  create flow (scaffold → fill → validate) and the improve flow (signals →
-  root cause → edit → audit). Also use when the user provides inline feedback
+  audit findings", "update based on grill output"). Also use when the user provides inline feedback
   about a skill's behavior and wants it applied, or when a grill session, eval
   run, or audit has produced findings the user wants acted on — even if they
   don't say "improve" explicitly. Do not use for read-only review — use