docs(skill-writer): update SKILL.md for skill-writer CLI

[pixelastic]

Parent

#28

What to build

Update config/ai/claude/claudecode/skills/skill-writer/SKILL.md to reflect the implemented CLI:

• Replace all occurrences of --name with --scope
• Fix the worktree path: ~/local/tmp/claude/skill-writer/<name> → ~/local/tmp/claude/skill-writer/<scope>/worktree/
• Update all command examples to use the correct subcommand signatures
• The history file is at ~/local/tmp/claude/skill-writer/<scope>/history.jsonl — update any references

Acceptance criteria

• No occurrence of --name remains in SKILL.md
• All worktree path references point to ~/local/tmp/claude/skill-writer/<scope>/worktree/
• All command examples in SKILL.md match the implemented CLI interface
• history.jsonl path is correct wherever referenced

Blocked by

• feat(skill-writer): skill-writer test core #29
• feat(skill-writer): skill-writer test --skill injection #30
• feat(skill-writer): skill-writer ask subcommand #31
• feat(skill-writer): skill-writer clean subcommand #32
• feat(skill-writer): skill-writer test recreates scope if already exists #33