Add skill-manager skill (migrated from skill-creator) with deploy action

- Skill content moved from ~/.agents/skills/skill-creator, renamed to skill-manager
- New deploy CLI action: installs any skill via absolute-path symlinks (or copies)
  into $HOME/.agents/skills, $HOME/.claude/skills and $HOME/.cline/skills
- Taskfile + shell module wrappers (task deploy / cli:deploy)
- SKILL.md: deploy docs, origin-repository/origin-path metadata

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

scripts/.scripts/validator/Taskfile.yml

@@ -0,0 +1,11 @@
+# https://taskfile.dev
+
+version: "3"
+
+tasks:
+  execute:
+    desc: -- --skill-dir="<path>"
+    cmds:
+      - |
+        ./.scripts/validator/api/skill--execute.sh {{ .CLI_ARGS }}
+    silent: true