Journal skill: local capture into gitignored .journal/

[bracyw]

Parent

#677

What to build

The capture half of the journal skill as a new skill at .claude/skills/journal/. Provides a low-friction way to park a thought without leaving flow: a note drops into a gitignored .journal/ folder at the repo root. No git, GitHub, ticketing, or branching — capture is formless and git-free.

Notes organize into categories (subfolders) that cluster related entries, and loose uncategorized entries at the journal root are also allowed. This slice is capture only; the export/dispatch half is a later slice, so the skill skeleton should leave a clear seam for it.

Also lands the supporting conventions: a .journal/ line in .gitignore (kept distinct from .context/, which holds cloned reference repos), and the workflow terms Journal, entry (journal entry), and category added to docs/agents/glossary.md alongside the existing Idea term.

Acceptance criteria

• New skill journal exists under .claude/skills/journal/ with a SKILL.md whose capture instructions drop a note into .journal/
• Notes can be captured into a category (subfolder) and as a loose entry at the journal root
• .journal/ is gitignored; capturing a note commits nothing and pushes nothing
• .gitignore gains a .journal/ entry, kept separate from .context/
• docs/agents/glossary.md defines Journal, entry, and category
• Capture never invokes git, GitHub, or any downstream skill

Blocked by

None - can start immediately