Add a navigable Obsidian vault as the project's first-class
technical documentation. Notes cross-reference with [[wikilinks]];
docs/index.md is the Map of Content.
New notes:
index.md MOC, entry point
architecture.md what the extension owns vs what lives outside
data-model.md entity-by-entity schema reference
menu-tree.md the arbitrary-depth tree concept
order-flow.md state machine + invoice listener + print
nostr-layer.md kinds 0/30402/5/1059, signing, t-tags
api-reference.md endpoint catalog by audience
cms.md Vue 3 + Quasar 2 UMD conventions, q-tree
webapp-integration.md multi-restaurant cart pattern + atomicity
glossary.md domain terms
Existing notes (kept as-is):
adr-0001-menu-tree.md the storage choice rationale
design-conversation.md trimmed transcript
README.md adds a Documentation section pointing at docs/index.md
with the headline note list. Each note links to ~3-5 others; the
vault forms a connected graph.
A project-level memory rule (saved outside the repo) commits us to
keeping these docs in sync as the code evolves: any commit that
materially changes schema, API, order flow, Nostr surface, CMS
conventions, or webapp integration must update the relevant note(s)
in the same commit.