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Reworks the fipstop TUI across its rendering, the control read surface it draws from, and its interaction model, on a machine-verified base. Test infrastructure: - Add a ratatui TestBackend snapshot harness (testkit + snapshots modules) that renders any ui::draw_* into an in-memory Buffer from canned show_* JSON and asserts the text grid plus per-cell style. Layout, columns, alignment, labels, grouping, and colour are now checkable under cargo test; every render below ships a snapshot. Control read surface (each new field emitted byte-identically on the live and off-loop builders, published once from the tick, with schema fixtures regenerated and the parity asserts holding): - show_status: effective persistence (persistent || nsec.is_some()); root and is_root; and a per-configured-transport-type peer-count map in which idle-but-configured types stay visible at zero. - show_peers: per-peer effective_depth (depth + link_cost, the value evaluate_parent ranks on), null when unmeasured or coordless so fipstop never recomputes it. - show_tree: root_npub, resolved once daemon-side (self when root, an attested peer npub, or an identity-cache hit). - show_bloom: the last-actually-sent uptree filter fill ratio and subtree estimate, null for a root or before the first announce. - show_mmp: session-layer srtt, loss, and etx trend labels. Rendering: - Display a 6-byte non-UTF-8 TransportAddr as a colon-separated MAC at the type layer, so daemon logs, fipsctl, and JSON consumers all benefit; non-6-byte payloads stay bare hex. - Right-justify the Bloom Peer Filters numerics into aligned fixed-width columns, render the Routing panes through a kv_lines helper that shares one value column across a key-value group, and right-justify the Graphs by-peer summary columns. - Truncate an over-long peer name (the npub shown when no friendly name exists) in the Tree, Bloom, and MMP peer lists so it no longer runs into the next column. - Group the Peers table by role (parent, then STP children, then other) and render it as a full grouped view with styled group labels and blank separators; the selection stays a peer index and the cursor only ever lands on a peer row. Apply the same role grouping to the Tree and Bloom peer lists, joining each peer's role from the peers view by node address. - Show min in the Graphs plot titles, rest a steady non-zero metric on the baseline as a row of dots, render a genuine zero as an empty plot, and keep a distinct no-data placeholder. - Replace the metric-by-peer grid, which squeezed plots to nothing once peers overflowed, with a master/detail Graphs view: a scrollable per-peer summary list that expands (Enter) to a full-pane btop plot, with up/down to flip peer, n/N to switch statistic, m to cycle mode, and Esc to return. - Put inline colored trend arrows on the Link and Session MMP values (drawn only on a rising or falling trend, with a fixed blank slot when stable so the value columns stay aligned), via a shared helper. - Cycle column sorting on the Link MMP, Session MMP, and Graphs by-peer tables (one key cycles the active column, another toggles direction), with the active column marked in each table's header. - Render the new daemon-surfaced fields: the dashboard root line (a self-is-root marker, otherwise a truncated root hex), a transports-by-type line, and an "approx. mesh estimate" line; an effective_depth column and lines on the Peers, peer-detail, and Tree sites from the single daemon derivation, showing a dash placeholder when unmeasured rather than a misleading zero; the full Tree root hex plus an Npub line; and the Bloom uptree fill and subtree-estimate lines. Interaction model: - Add a declarative keybinding registry keyed by (Tab, UiMode) that both the context footer and the ? help overlay render from, so the two cannot drift; a test asserts every registry key has a dispatch handler. - Add a modal ? help overlay, and a context-aware footer that shows the current state's actions first, drops global hints when the terminal is narrow, and always keeps a Help affordance as the overflow path. - Generalize per-pane focus and scroll state on App, wired across the Tree, Filters, Routing, and MMP tabs (f cycles pane focus and the focused pane scrolls instead of clipping its overflow); on the MMP tab the column sort acts on the focused pane. Esc deselects the active row when no detail is open (detail-close still takes priority). - Add a Del-disconnect confirmation modal naming the peer, the only state-mutating action, issuing the control-socket disconnect on confirm and noting that the peer stays disconnected until manually reconnected.