codium_nostr_extension/plans/longform-metadata-strategy.md

Long-Form Note Metadata Strategy

Goal

When publishing a .md file as a NIP-23 long-form note (kind 30023), the author needs to control metadata that is not part of the body content:

• d tag — the parameterized-replaceable identifier (slug)
• title — note title
• summary — short abstract shown in feeds
• image — cover/hero image URL
• t tags — topics / hashtags
• published_at — first-publish timestamp (set once, preserved on updates)
• alt — accessibility/relay hint text

We need a way to express these per-document. Two complementary mechanisms are proposed: front-matter (primary, authoring-time) and a publish dialog (secondary, last-mile override + confirmation).

NIP-23 tag reference

Tag	NIP-23 meaning	Source of value
d	identifier	front-matter slug, else filename stem, else prompt
title	title	front-matter title, else filename stem
summary	abstract	front-matter summary, else first paragraph
image	cover image URL	front-matter image
t	topic hashtag	front-matter tags (array)
published_at	first publish unix ts	auto-managed by extension, persisted in workspace state keyed by d
alt	relay hint	auto-generated: "Long-form post: