v0 state

item

item is one entry on the board. \`address\` is the uverse bech32 type — it is persistable (unlike a \`realm\` value), so it is safe to store across txs.

items

nextID

Add

Add appends a new item authored by the caller and returns its id. Crossing function: takes \`cur realm\` first (gno 0.9 interrealm convention), authenticates with cur.IsCurrent() before trusting cur.Previous().

Toggle

Toggle flips the done state of the item with the given id.

Remove

Remove deletes the item with the given id.

idKey

idKey renders an id as a fixed-width, zero-padded key so avl.Tree's byte-lexicographic ordering matches numeric id ordering.

shortAddr

shortAddr renders an address as "g1abc…" (first 6 chars + ellipsis).

counts

counts returns the number of open and done items.

Render

Render returns the board as Markdown. Newest item (highest id) first. Render is NOT a crossing function (no \`cur realm\` param) — it is read-only and invoked by gnoweb, not via MsgCall.