swapitlisted

# swapit — household toxics inventory + swap engine ## What this skill is `swapit` turns a vague worry ("there's probably a lot of plastic and BPA in my house") into a **concrete, prioritized, trackable plan**. It is stateful: your household inventory lives on disk and persists across sessions. It is local-first: zero paid services, nothing leaves your device unless you explicitly opt into the (M3) commons. One pass produces: 1. An **inventory** of the items you own, each tagged with its generic *item-class*. 2. A **risk score** per item that reflects *actual exposure* — a scratched non-stick pan used daily at high heat ranks far above an unopened plastic bin in the garage. 3. A **ranked "swap-first" list** — the 5% of changes that cut the most exposure. 4. **Swap tracking** — chosen alternative, procurement status, checklist, bookmarks. 5. A shareable **HTML report** (and, in M2, a live dashboard at `swapit serve`). ## The three realms (and the privacy invariant) | Realm | What it holds | Sharing | |---|---|---| | **1 · Knowledge** | hazards → item-classes → alternatives (generic, cited facts) | shareable; cached + (M3) commons-synced | | **2 · Inventory** | your items, rooms, quantities, brands, photos, swaps, bookmarks | **PRIVATE — never leaves the device** | | **3 · Commons** (M3) | anonymized contributions enriching the shared knowledge graph | opt-in, reviewed, generic facts only | > **Privacy invariant (binding):** Realm-2 inventory (items, rooms, quantities,