fix(ui): dead-end empty states — add CTA/context in GraphView, MemoryList no-match, RoomsView tabs, Lifecycle recycle bin

[ajianaz]

Problem

Empty states are inconsistent across views — some are engagement moments with a CTA, others are dead ends:

Dead ends ❌:

• GraphView.svelte:620 — "No memories to visualize." (no CTA, no hint)
• MemoryList.svelte:241 — "No matches in memories or documents." (no "clear filters" suggestion)
• RoomsView.svelte:238, 249 — two tab-empty states (text only)
• LifecycleView.svelte — Recycle Bin empty: "Recycle bin is empty." (no context for new users)

Good examples ✅ (keep as reference):

• MemoryList.svelte:300 — "No memories yet" + Create your first memory button
• DocumentsView.svelte:708 — icon + "No documents yet" + Create first doc button
• RoomsView.svelte:165 — explanation + CLI alternative + GUI alternative
• ContextPreviewPanel.svelte:180 — Load button

Fix (P32: reassurance + illustration + suggested next step + primary CTA)

• GraphView: add CTA "Go to Memories" (switches view) when empty
• MemoryList no-match: add "Clear search" action chip + hint about filters
• RoomsView tab-empty: short guidance what a tab means when empty (e.g. "Memories shared into this room appear here")
• LifecycleView recycle bin: context line "Memories land here after a lifecycle cycle or dedup — nothing to restore right now."

Source

Full-app UI audit (mobile-UX P32: empty states are engagement moments).