docs(kyberforge): add keywords/homepage/repository to plugin apm.yml

bin and kyberforge had empty keywords: [], and no plugin set homepage or
repository despite the schema supporting both and the repo having one
canonical Gitea remote -- flagged by an apm-docs-vs-repo audit following
issue #90's plugin->apm conversion.

Compiled .claude-plugin/plugin.json and .github/plugin/plugin.json were
regenerated via scripts/sync-plugin-content.sh to carry the new fields.

Refs: #90

plugins/kyberforge/apm.yml

@@ -6,7 +6,14 @@ author:
   email: defame1297@rkdr.net
   url: https://git.dev.rkdr.net/Defame1297/
 license: MIT
-keywords: []
+homepage: https://git.dev.rkdr.net/Defame1297/holocron/src/branch/main/plugins/kyberforge
+repository: https://git.dev.rkdr.net/Defame1297/holocron/src/branch/main/plugins/kyberforge
+keywords:
+  - marketplace
+  - plugin
+  - skill-authoring
+  - agent-authoring
+  - apm
 
 # Constrains what .apm/ may contain: instructions, skill, hybrid, or prompts
 type: hybrid