Concurrent MessageHandler + SyncTask per-interface timeout: fix multi-vault sync starvation

Rename DMs column to Direct

Release send_message write lock before network I/O, remove blob_listener eprintln spam

Finder polish: keyboard nav, Quick Look, breadcrumbs, file icons, empty states, context menu, inline rename, Cmd+Delete

Realm column-view vault UI: 4-column Finder layout (Private/DMs/Groups/Public) with accordion realms and file modal popup

Sync convergence: immediate sync on member add + await_members barrier for combinatorial test

Merge redundancies: vault-sync into sync-engine, extract viewer-common, Quest→Intention cleanup, document node/network boundary

Inline markdown editor: click-to-edit body, clickable title rename, file watcher, empty file placeholder

Filesystem watcher, reactive file preview, Obsidian vault init, skip hidden files

Init Obsidian vault: create .obsidian/ dir, restore Open in Obsidian button, deduplicate vault setup

Inline CRDT content for vault blob sync: embed small file content in VaultFile, eliminate relay dependency for sub-500KB files

UI/UX overhaul: bioluminescent design system, deferred pass story, streamlined onboarding, Ctrl+C handler

Relay blob sync: transport-based push via realm interface, blob listener, local relay fallback

Fix relay_sync build: add indras-node dep, node_arc() method, correct event pattern matching

Add se-btn-back CSS rule for back button styling