fix(kyberforge): resolve PR #144 review and audit round 1

- factory-audit: no-op hooks, ./ after interpreters, split-quote and
  spaced ${PLUGIN_ROOT} paths, camelCase events in Claude-targeted flat
  files, case-insensitive routing stems, and non-string YAML keys are
  now caught; input: forms and prompt boundary clauses align with
  primitive-author; bats 347 -> 367
- primitive-author: routing forms, quoting guidance, install exit on
  hidden Unicode, argument-hint exception
- forge: drop duplicated gotcha, fit description and body budgets (#143)
- skill-author: primitive-author boundary, Claude-only env vars
- hook: exit unless CLAUDE_PROJECT_DIR is set, so Copilot/Codex never
  run apm update; ADR-0019 correction, ADR-0025 amendment, docs fixes

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KkT7RSDwDbmrM9T34b6sTi

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

@@ -1,9 +1,10 @@
 ---
 name: skill-author
 description: >
-  Use when the user wants to create a new skill from scratch, or apply audit
-  findings, grill output, eval results, or inline feedback to an existing one.
-  Not read-only review -> `factory-audit`. Not agent files -> `agent-author`.
+  Use when creating a new skill, or applying audit findings, grill output, eval
+  results or feedback to an existing one. Not read-only review ->
+  `factory-audit`. Not agents -> `agent-author`. Not hooks, instructions or
+  prompts -> `primitive-author`.
 allowed-tools: Bash Read Write Edit
 metadata:
   version: "1.0.6"