[C2] Non-standard `command:` field at root level — 4 skills

[synerbot]

Four vault skills declare a command: field in frontmatter at the root level:

command: find-ideas   # find-ideas
command: find-links   # find-links
command: grow-note    # grow-note
command: save-bookmark # save-bookmark

This field is not in the Agent Skills spec (allowed-tools, metadata.version, skills are mentioned — command is not). It may be:

• A: Intentional — used by a routing or CLI layer that reads frontmatter
• B: Redundant — the filename/name field already serves this purpose
• C: Leftover — from an earlier iteration of the skill format

Decision needed: Is command: serving a real runtime purpose? If yes, document it and add it to the convention guide. If no, remove it (or move to metadata.command for clarity).

Note: track-idea has context: fork at root (not inside metadata) which is a parallel inconsistency — context should be inside metadata per create-syner-skill's own spec. Same decision applies.