fix: ccc login symlinks projects/ and plugins/ alongside settings.json

feat: symlink plugins/ to global — shared across all accounts

feat: symlink projects/ to global — shared memory across all accounts

fix: ccc login runs inside CLAUDE_CONFIG_DIR for full session init

feat: use 7d resets_at for accurate unblocking, penalize high 7d in pick_best

feat: pick_best uses reset times when all accounts exhausted

fix: dead PID cleanup, polling accuracy, Pyright warnings

fix: use real reset timestamps for unblocking, poll all accounts

fix: track actual account after mid-session swap, clean up stale refs

feat: CLAUDE_CONFIG_DIR per-terminal isolation — no shared keychain

feat: background polling of other accounts every 5 minutes

feat: rewrite as fleet model — all terminals share one account

fix: adopt-keychain command respects manual /login without cross-contamination

fix: remove keychain-based reconcile, lock swap_to atomically

fix: reconcile assignment when user does /login externally