fix(desktop): make @mention clicks reliably open the profile panel

[matt2e]

Summary

Clicking an @mention chip only worked in the main message timeline, and only when the mention text matched the profile's display name. Chips in forum posts, forum replies, the home feed, and inbox rows were inert, and a mention rendered from a kind-0 name alias never resolved to a pubkey. This PR makes mention chips reliably open the right-hand profile panel everywhere they render interactively.

Changes

• Single-pass alias resolution: resolveMentionProps resolves mention render names and the name→pubkey click map from one alias set per mentioned user — display name, kind-0 name, and NIP-05 local part — so any alias the app renders resolves back to its pubkey, case-insensitively.
• Kind-0 name plumbed through: carry the name field through the Tauri profile summary (UserProfileSummaryInfo.name); split the profile API wrappers out of tauri.ts into tauriProfiles.ts to stay under the file-size ratchet.
• All interactive surfaces wired: mentionPubkeysByName now reaches forum post cards, the forum thread panel (post + replies), the home feed, and inbox rows. Markdown's memo compares the map by value (shallowRecordEqual) so call sites that rebuild it inline don't defeat memoization.
• Honest affordance: chips get pointer cursor + hover styles only when clicking actually opens a profile (interactive surface and resolved pubkey).
• ForumView profile fetches: fetch profiles for mention-tag pubkeys so a mentioned user who never authored a post no longer renders as a dead chip.
• Profile panel in forum channels: new ForumChannelContent hosts the user-profile auxiliary pane next to ForumView (forums replace ChannelPane, which hosts the panel for message channels — opening a profile there previously showed nothing). Removes the matching MembersSidebar forum workaround.
• Clippy fixes: fix six pre-existing Rust 1.95 clippy lints in desktop/src-tauri (unused import, doc indentation, slice::from_ref, is_none_or) that blocked just ci and the pre-push hook.

Tests

• Unit coverage for alias resolution: display name, kind-0 name, NIP-05 local part, _ root skip, mention reference tags, case normalization (resolveMentionNames.test.mjs).
• Playwright specs clicking mention chips in the timeline (display-name and kind-0-name aliases) and in a forum post, asserting the profile panel opens.

Known limitation

NIP-27 nostr:npub1... references are not linkified (out of scope per plan).

🤖 Generated with Claude Code

[baxen]

LGTM!