technical-research
Explore ideas, validate concepts, and research broadly across technical, business, and market domains. Preliminary phase before discussion-specification-plan-implement-review workflow. Use when: (1) User has a new idea to explore, (2) Need to research a topic deeply, (3) Validating feasibility - technical, business, or market, (4) Learning and exploration without necessarily building anything, (5) User says 'research this' or 'explore this idea', (6) Brain dumping early thoughts before formal discussion. Creates research documents in docs/workflow/research/ that may seed the technical-discussion phase.
estimation-fermi
Use when making quick order-of-magnitude estimates under uncertainty (market sizing, resource planning, feasibility checks), decomposing complex quantities into estimable parts, bounding unknowns with upper/lower limits, sanity-checking strategic assumptions, or when user mentions Fermi estimation, back-of-envelope calculation, order of magnitude, ballpark estimate, triangulation, or needs to assess feasibility before detailed analysis.
plan-reviewer
Review implementation plans for completeness and feasibility. Use when user says "review this plan before I start", "is this implementation plan complete", "check if this plan aligns with our patterns", "give me feedback on my implementation strategy", or "validate this plan before we execute it".
