refactor: modernize module-help CSV format and rewrite bmad-help as outcome-based skill (#2120)
New CSV format: module,skill,display-name,menu-code,description,action,args,phase,after,before,required,output-location,outputs
- Replace sequence numbers with after/before dependency graph
- Drop command, workflow-file, agent, options columns
- Add action column for multi-action skills (tech-writer, create-story)
- Add args column for CLI shortcut hints
- Make description optional (only when adding flow/routing context beyond frontmatter)
- Expand module names for clarity
- Rewrite bmad-help SKILL.md from procedural 8-step execution to outcome-based design
- Fix eslint config to ignore gitignored lock files (pnpm-lock.yaml, bun.lock)
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