tui/webui: title the ambient pane 'monitor'

crates/cli/src/app.rs

@@ -41896,7 +41896,7 @@ mod tests {
             .expect("minibuffer widget render should not panic");
         assert_eq!(app.layout.matrix_widget_hits.len(), 3);
         let text = rendered_text(term.backend().buffer());
-        assert!(text.contains("minibuffer ─"));
+        assert!(text.contains("monitor ─"));
         assert!(
             text.contains("■"),
             "selected widget indicator should be filled"
@@ -42077,7 +42077,7 @@ mod tests {
             .expect("collapsed rain title bar should render");
         let text = rendered_text(term.backend().buffer());
         assert!(
-            text.contains("minibuffer"),
+            text.contains("monitor"),
             "collapsed panel should keep its title bar: {text:?}"
         );
 
@@ -42141,7 +42141,7 @@ mod tests {
         term.draw(|f| crate::ui::render(f, &mut app))
             .expect("minibuffer approval title should render");
         let text = rendered_text(term.backend().buffer());
-        assert!(text.contains("minibuffer !"));
+        assert!(text.contains("monitor !"));
         let (x_start, _x_end, y) = app
             .layout
             .matrix_minibuffer_title_hit

crates/cli/src/ui.rs

@@ -1184,9 +1184,9 @@ fn render_list_title_button_tooltips(f: &mut Frame, app: &App) {
         if let Some((xs, xe, y)) = matrix_rain_close_button_range(rain) {
             if my == y && mx >= xs && mx < xe {
                 let (label, anchor_y) = if app.matrix_rain_hidden {
-                    (" Expand Minibuffer ", y)
+                    (" Expand monitor ", y)
                 } else {
-                    (" Collapse Minibuffer ", y.saturating_add(2))
+                    (" Collapse monitor ", y.saturating_add(2))
                 };
                 render_button_tooltip(f, &app.theme, label, xs, anchor_y);
             }
@@ -3777,7 +3777,7 @@ fn split_lineage_section(
 
 /// Render the sidebar's lineage section: a header bar (a `─` rule carrying
 /// the `⑂ lineage` label, the view-mode toggle, and a `−`/`+` collapse
-/// button — the same furniture as the minibuffer panel's title bar lower in
+/// button — the same furniture as the monitor panel's title bar lower in
 /// the sidebar)
 /// above the selected session's lineage diagram. Reuses
 /// `App::lineage_section_rows` (`crate::lineage::build_tree`/`flatten`
@@ -3807,7 +3807,7 @@ fn render_lineage_section(
     app.layout.lineage_area = Some(rect);
     let focused = app.lineage_focused && app.focus == PaneFocus::List;
 
-    // Header bar: a full-width `─` rule (the minibuffer panel's visual
+    // Header bar: a full-width `─` rule (the monitor panel's visual
     // language), label at the left, mode toggle + collapse button at the
     // right. The bare bar doubles as the height drag handle.
     let line_style = if focused {
@@ -3843,7 +3843,7 @@ fn render_lineage_section(
         } else {
             " − "
         };
-        // Flush right, matching the minibuffer panel's toggle below.
+        // Flush right, matching the monitor panel's toggle below.
         let bx = rect.x + rect.width.saturating_sub(3);
         let button = Rect {
             x: bx,
@@ -5583,10 +5583,17 @@ fn render_matrix_rain_header(f: &mut Frame, area: Rect, app: &mut App, now: Inst
     // so the squares below reflect the live shown/pinned widget.
     app.matrix_widget_visible(now);
     let approval_pending = app.minibuffer_has_pending_approval();
+
+    // Pane title: this pane is the fleet's ambient *monitor* (rain / token
+    // meter / widget strip), so it must not be titled after the minibuffer
+    // — that names the dispatcher session in the bottom strip (spec 0199).
+    // The label still carries the minibuffer affordances (status tooltip,
+    // approval alert, click-to-open) because the default sidebar width has
+    // no room for a separate chip; the tooltip names the minibuffer.
     let minibuffer_text = if approval_pending {
-        "minibuffer !"
+        "monitor !"
     } else {
-        "minibuffer"
+        "monitor"
     };
 
     // Play/pause toggle for the minibuffer ambient loop.
@@ -5612,7 +5619,7 @@ fn render_matrix_rain_header(f: &mut Frame, area: Rect, app: &mut App, now: Inst
         .set_string(loop_icon_x, area.y, loop_icon, loop_icon_style);
     app.layout.matrix_minibuffer_loop_hit = Some((loop_icon_x, loop_icon_end, area.y));
 
-    // Prompt label renders after the icon; the leading space in " minibuffer "
+    // Prompt label renders after the icon; the leading space in " monitor "
     // provides the visual gap between icon and text.
     let label = format!(" {minibuffer_text} ");
     let label_x = loop_icon_end;

crates/daemon/assets/index.html

@@ -2911,7 +2911,7 @@
     background: color-mix(in srgb, var(--accent) 45%, transparent);
   }
 
-  /* Minibuffer ambient panel (spec 0019 / 0167): fleet token meter by default. */
+  /* Monitor ambient panel (spec 0019 / 0167): fleet token meter by default. */
   .minibuffer-panel {
     flex: 0 0 auto;
     display: flex;
@@ -3880,19 +3880,21 @@
         <div class="lineage-body" id="lineageBody" role="tree" aria-label="session lineage"></div>
       </section>
       <!--
-        Minibuffer ambient panel (specs 0019 / 0167): fleet token meter by
+        Monitor ambient panel (specs 0019 / 0167): fleet token meter by
         default, with a rain mode toggle. Anchored at the bottom of the
-        sidebar like the TUI matrix-rain region.
+        sidebar like the TUI matrix-rain region. Titled "monitor" — the
+        pane observes the fleet; "minibuffer" names the dispatcher session
+        (spec 0199), not this pane.
       -->
       <section class="minibuffer-panel" id="minibufferPanel">
         <!-- Resize handle on the TOP border of the title bar (TUI parity). -->
         <div class="minibuffer-resize" id="minibufferResize" role="separator"
-             aria-orientation="horizontal" aria-label="resize minibuffer panel"></div>
+             aria-orientation="horizontal" aria-label="resize monitor panel"></div>
         <div class="minibuffer-header" id="minibufferHeader">
-          <span class="section-title" id="minibufferTitle">minibuffer</span>
-          <button type="button" id="minibufferModeBtn" aria-label="toggle minibuffer panel mode"
+          <span class="section-title" id="minibufferTitle">monitor</span>
+          <button type="button" id="minibufferModeBtn" aria-label="toggle monitor panel mode"
                   title="Toggle rain / tokens">tokens ⇄</button>
-          <button type="button" id="minibufferCollapseBtn" aria-label="collapse minibuffer panel"
+          <button type="button" id="minibufferCollapseBtn" aria-label="collapse monitor panel"
                   title="Collapse">−</button>
         </div>
         <div class="minibuffer-body" id="minibufferBody">
@@ -6263,7 +6265,7 @@ <h2 id="operatorViewTitle"></h2>
     minibufferCollapseBtn.textContent = state.minibufferCollapsed ? "+" : "−";
     minibufferCollapseBtn.setAttribute(
       "aria-label",
-      state.minibufferCollapsed ? "expand minibuffer panel" : "collapse minibuffer panel",
+      state.minibufferCollapsed ? "expand monitor panel" : "collapse monitor panel",
     );
   }
   const tokens = state.minibufferPanelMode !== "rain";

specs/0019-minibuffer-widgets-use-matrix-rain-viewport.md

@@ -1,7 +1,7 @@
 # 0019-minibuffer-widgets-use-matrix-rain-viewport
 
 Status: accepted
-Date: 2026-06-05 (amended 2026-08-01)
+Date: 2026-06-05 (amended 2026-08-16)
 Area: tui
 Scope: Defines the ambient panel's selectable body modes and how the collapsed Minibuffer communicates through it.
 
@@ -20,7 +20,7 @@ of the body, not a mode of its own.
 
 When the Minibuffer session is collapsed, the panel may act as a transient viewport over the Minibuffer session's normal sticky widgets. Minibuffer widgets keep the same lifecycle as all session widgets: sessions create, update, and delete them, and the viewport only controls temporary visibility.
 
-Updating a Minibuffer widget briefly reveals it in the panel. The title bar shows the lowercase `minibuffer` label followed by one square indicator per visible Minibuffer widget, and a mode switch naming the mode currently showing, carrying the same swap glyph as the session list's view-mode toggle so the two controls read as one convention. Hovering the Minibuffer label may reveal the current Minibuffer status in a tooltip. Hovering a widget indicator may reveal that widget's title. Clicking an empty square selects and shows the widget; clicking the filled square hides the widget viewport. The existing close button continues to hide the Minibuffer/ambient panel itself, and is distinct from the mode switch — switching modes never collapses the panel. When the widget viewport hides or no Minibuffer widgets exist, the panel returns to its selected mode.
+Updating a Minibuffer widget briefly reveals it in the panel. The title bar names the pane with the lowercase `monitor` title — the pane observes the fleet; `minibuffer` names the dispatcher session (spec 0199) and must never double as this pane's name. The title may also carry the Minibuffer affordances (loop toggle, status tooltip, approval alert, click-to-open) when the bar has no room for a second chip; the hover tooltip still names the Minibuffer so the control is not confused with the pane itself. Then come one square indicator per visible Minibuffer widget, and a mode switch naming the mode currently showing, carrying the same swap glyph as the session list's view-mode toggle so the two controls read as one convention. Hovering the title may reveal the current Minibuffer status in a tooltip. Hovering a widget indicator may reveal that widget's title. Clicking an empty square selects and shows the widget; clicking the filled square hides the widget viewport. The existing close button continues to hide the monitor/ambient panel itself, and is distinct from the mode switch — switching modes never collapses the panel. When the widget viewport hides or no Minibuffer widgets exist, the panel returns to its selected mode.
 
 ## Reason
 

specs/0081-lineage-section-in-sidebar.md

@@ -43,7 +43,7 @@ diagram glyph beneath them, while their full-cell tracks remain
 mouse-interactive.
 
 The section's header is a one-row horizontal rule carrying its label and
-controls — the same visual furniture as the minibuffer panel's title bar
+controls — the same visual furniture as the monitor panel's title bar
 lower in the sidebar: a `−`/`+` collapse button at the right end, the view-mode
 toggle beside it, and the bare rule doubling as a height drag handle (dragging
 up grows the section, within the same caps). The collapse state, the dragged

specs/0186-webui-lineage-and-token-meter.md

@@ -1,15 +1,15 @@
 # 0186-webui-lineage-and-token-meter
 
 Status: accepted
-Date: 2026-08-02 (amended 2026-08-05)
+Date: 2026-08-02 (amended 2026-08-16)
 Area: webui
 Scope: The web UI sidebar and persistent header expose the fleet token meter alongside the selected-session lineage section.
 
 ## Decision
 
 The web client's left sidebar stacks the same durable regions the TUI
 does: session rows, then a collapsible **lineage** section, then a
-collapsible **minibuffer** ambient panel. Operators remain ordinary list
+collapsible **monitor** ambient panel. Operators remain ordinary list
 rows (as they already are on the web).
 
 ### Lineage section
@@ -36,7 +36,7 @@ subagent / reset-snapshot), and subagent-group collapse match the TUI;
 the presentation uses HTML tree rows so the section remains usable on
 touch and narrow viewports.
 
-### Minibuffer ambient panel
+### Monitor ambient panel
 
 The ambient panel sits at the bottom of the sidebar and hosts the same
 named body modes as the TUI (spec 0019):
@@ -89,7 +89,7 @@ the gap was client presentation.
 ## Consequences
 
 - Future web sidebar work must preserve the stack order: list → lineage
-  → minibuffer, and must not drop Cost events that arrive for unfocused
+  → monitor, and must not drop Cost events that arrive for unfocused
   sessions.
 - A collapse or expansion in the narrow mobile menu must not consume the
   corresponding wide-sidebar preference, or vice versa.