LatteandClaude Opus 4.8
61837d4783
Rework the token store to hold many characters keyed by character_id,
migrating the previous single-character file transparently. `familiar login`
now adds a character; `familiar status` lists all; `familiar logout [name|id]`
removes one or all.
Every account tool gains an optional `character` (name or id): omitted means
all logged-in characters, given means just that one. Results are uniform
{"characters": [...]}. get_auth refreshes per character.
58 tests, coverage 89%. Closes #9
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>