Skill-Namensfamilien: weekly-review -> gtd-weekly-review, dritte Person in allen Descriptions (#129)

Files changed:
- AGENTS.md
- CHANGES.md
- INSTALL.md
- README.md
- VERSION
- instructions/CONTRACT.md
- instructions/dev/stack-close/SKILL.md
- instructions/dev/stack-dev/SKILL.md
- instructions/gtd-weekly-review/SKILL.md
- instructions/setup-instance.md
- instructions/weekly-review/SKILL.md
- instructions/wiki-ingest/SKILL.md
- instructions/wiki-lint/SKILL.md
- instructions/wiki-manage/SKILL.md
- instructions/wiki-query/SKILL.md
- instructions/wiki-status/SKILL.md
- tools/chemenu/tests/test_instructions_cmd.py

instructions/wiki-status/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: wiki-status
-description: Show a quick read-only snapshot of the LLM wiki - page counts, orphan pages, uncovered raw files, recent activity. Use when the user says "wiki status", "show wiki statistics", "what's new", or wants a quick health snapshot without running a full lint.
+description: Shows a quick read-only snapshot of the LLM wiki - page counts, orphan pages, uncovered raw files, recent activity. Use when the user says "wiki status", "show wiki statistics", "what's new", or wants a quick health snapshot without running a full lint.
 ---
 
 # Wiki Status