feat(kyberforge): add instructions-author skill for .apm/instructions files

Scaffolds and revises apm instructions files, with a throwaway-package
verification recipe because `apm compile --validate` always exits 0 and
Claude Code drops `description`. Routed from forge and linked from
apm-workflow's compile reference. Bumps kyberforge to 2.1.0 and the catalog
to 0.5.2.

Fixes #148

Co-Authored-By: Claude Code <[email protected]>
Claude-Session: https://claude.ai/code/session_01KkT7RSDwDbmrM9T34b6sTi

apm.yml

@@ -1,5 +1,5 @@
 name: holocron
-version: 0.5.1
+version: 0.5.2
 description: AI development skills for Claude Code, and for GitHub Copilot through apm — factory, design, implement, review, and cross-cutting workflows.
 license: MIT
 
@@ -61,7 +61,7 @@ dependencies:
 # an apm mechanic.
 executables:
   allow:
-    kyberforge#2.0.2:
+    kyberforge#2.1.0:
       hooks: true
       bin: true
 
@@ -71,7 +71,7 @@ marketplace:
   # top-level apm.yml description:/version: above are NOT inherited into the
   # compiled output despite being used elsewhere (e.g. by `apm audit`).
   description: AI development skills for Claude Code, and for GitHub Copilot through apm — factory, design, implement, review, and cross-cutting workflows.
-  version: 0.5.1
+  version: 0.5.2
   owner:
     name: Defame1297
     email: [email protected]