soap-calc

Manage the user's soap-making supply inventory (oils, butters, fats, additives). Cross-references items against the soap-calc oil and additive JSON databases and saves a validated inventory.md file. Use when the user: (1) lists oils or additives they have on hand, (2) asks to add or remove items from their inventory, (3) asks to show, update, or clear their inventory, or (4) says things like "here's what I have" or "add castor oil to my inventory." Do NOT use for recipe formulation or lye calculations — use the soap-formulation skill for those.

Expert soap recipe formulation, troubleshooting, and educational guidance for cold process (CP), hot process (HP), bar soap (NaOH), and liquid soap (KOH). Use when the user asks to: (1) formulate or generate a soap recipe, (2) troubleshoot soap problems ("why is my soap soft/crumbly/not lathering/getting DOS"), (3) substitute or compare oils, (4) review or improve an existing recipe, (5) get formulation advice on fatty acid balance, superfat levels, or additive choices, or (6) learn about soap making chemistry and techniques. Do NOT use for melt-and-pour soap, syndet bars, or cosmetic regulatory questions.