The manual version of the architecture's `route` step: Brian points her at the
TYPE of work and her register + tools shift to match. Biggest single lever on the
'meh' problem (a mode card can demand decisive/technical/generative, countering
gpt-4o's default warm-vapor).
- modes.py: Build (heads-down engineering — decisive, concrete, tradeoffs, no
listicles), Explore (open brainstorming — generative, riffs + honest catch,
spawn threads, don't converge early), Study (poker review away from the table —
analytical, GTO-aware, teaching; read-only lookups + analyze_spot). Cash relabeled
Poker (key kept for compat).
- UI: mode selectors (desktop + mobile) get all five; badge taps now cycle modes.
- design: docs/COGNITION.md (the society-of-parts control-plane sketch).
- tests: presence + tool-gating for the new modes. Suite 85, ruff clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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