Tags: jb55/damus

longform: fix note URLs not opening from nevent references

Previously, clicking nevent links pointing to longform notes (kind 30023)
showed "Can't display note" error because .longform was listed as an
unsupported kind in LoadableNostrEventView. This fix adds .longform to
the supported kinds alongside .text and .highlight, routing them to
ThreadModel for proper display.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Closes: damus-io#3487
Closes: damus-io#3003
Closes: damus-io#3485
Changelog-Fixed: Longform article links now open correctly when shared as nevent URLs
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: alltheseas <alltheseas@users.noreply.github.com>
Signed-off-by: William Casarin <jb55@jb55.com>