Replace the single browse view with BrowseTabs (one tab per user),
mirroring the chat-room tabs. Browsing a new user (from search results
or a chat room's member list) opens or focuses their tab; Tab/Shift-Tab
switch between open users, 'w' closes the active tab, Esc hides the
popup while keeping the tabs. A tab bar shows the open users when more
than one is open, and each tab polls/loads independently. Re-browsing a
timed-out user retries. BrowseTabs is unit-tested.
Add a chat-rooms popup (open with 'c') satisfying the requested UX:
- Browsable, /-filterable room list showing per-room user counts,
busiest first; already-open rooms are marked.
- Multiple rooms open at once as tabs; Tab/Shift-Tab switch, 'x' leaves.
- Per-room chat log with a live member list and an inline compose line
(Enter to type, Enter to send; the server echo renders the message).
- Unread indicators: bold tab name + 'room (n)' badge per room, plus
'chat (n)' and 'inbox (n)' counters in the shortcut bar; viewing a
room clears its badge.
RoomsState is unit-tested (routing, unread accounting, tab lifecycle,
filtering).
Wire browsing a user's shared files into the TUI as a modal tree popup:
- press 'b' on a highlighted search result to browse that result's owner, or
'b' elsewhere to type a username (new CommandBarMode::Browse);
- a new models/browse.rs synthesizes the flat SharedDirectory list into a
nested, collapsible tree (intermediate folders reconstructed from the
backslash paths; file download paths kept byte-exact from the original names),
with expand/collapse state and a flatten-to-rows renderer — fully unit-tested;
- the popup polls take_browse_result each tick (with a timeout), navigates with
arrows/hjkl, expands/collapses folders, and queues downloads: Enter on a file,
'd' on a file or an entire folder subtree (recursively) — all funneled into
the existing Downloads pane;
- shortcuts bar advertises browse keys and surfaces our own sharing status.
Add private messaging to the TUI:
- 'm' opens the command bar in message mode; type '<recipient> <text>' and
Enter sends it via the client;
- incoming messages are polled each tick into an inbox;
- 'i' toggles a centered inbox popup listing sent/received messages.
The shared command bar now carries a mode (search vs message) so the prefix,
submit action and shortcut hints follow what is being typed.
michel