fix: tab navigation, Enter guard, tool count, tab switching from sidebar/chat

- Left/Right arrows switch workspace tabs when sidebar/chat focused
- Number keys 1-9 switch tabs when not typing in input
- Enter only fires in Input focus (no accidental empty messages)
- Separate tool_count from model_count (was showing 535 instead of 106)
- XML tool call parsing for Nvidia/Llama models
- Brighter colors throughout

Known issues to fix next session:
- Sidebar items not selectable/highlightable (need StatefulList)
- No interactive settings controls (temperature slider etc)
- Text truncation in sidebar
- Need proper tree widget for nested navigation

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Darth-Hidious

crates/cli/src/tui/components/sidebar.rs

@@ -304,7 +304,7 @@ fn draw_settings(f: &mut Frame, app: &App, area: Rect, focused: bool) {
         action("/billing", "Credit balance"),
         spacer(),
         section("Tools"),
-        item(&format!("{} loaded", app.model_count.unwrap_or(106))),
+        item(&format!("{} loaded", app.tool_count)),
         item("Custom: ~/.prism/tools/"),
         action("/tools", "Browse tools"),
         spacer(),

crates/cli/src/tui/components/status_bar.rs

@@ -50,7 +50,7 @@ pub fn draw(f: &mut Frame, app: &App, area: Rect) {
         sep.clone(),
         // Tools
         Span::styled(
-            format!("{} tools", app.model_count.unwrap_or(106)),
+            format!("{} tools", app.tool_count),
             Style::default().fg(Color::Rgb(130, 130, 130)),
         ),
         sep.clone(),

crates/cli/src/tui/mod.rs

@@ -509,9 +509,7 @@ pub async fn run_tui_app(
                         }
                     }
                     protocol::ProtocolNotification::Welcome(w) => {
-                        if app.model_count.is_none() {
-                            app.model_count = Some(w.tool_count);
-                        }
+                        app.tool_count = w.tool_count;
                     }
                     protocol::ProtocolNotification::View(view) => {
                         app.active_view = Some(view);
@@ -531,12 +529,24 @@ pub async fn run_tui_app(
                     KeyCode::Char('e') if key.modifiers.contains(KeyModifiers::CONTROL) => {
                         app.sidebar_visible = !app.sidebar_visible;
                     }
-                    // Tab switching: Ctrl+1-9 for workspaces
+                    // Tab switching: 1-9 when NOT typing in input
+                    KeyCode::Char(c @ '1'..='9') if app.focus != state::FocusZone::Input => {
+                        let idx = (c as usize) - ('1' as usize);
+                        app.select_activity(idx);
+                    }
+                    // Ctrl+1-9 always works for tab switching
                     KeyCode::Char(c @ '1'..='9') if key.modifiers.contains(KeyModifiers::CONTROL) => {
                         let idx = (c as usize) - ('1' as usize);
                         app.select_activity(idx);
                     }
-                    // Alt+Left/Right to cycle workspace tabs
+                    // Left/Right arrows switch tabs when sidebar or chat is focused
+                    KeyCode::Left if app.focus == state::FocusZone::Sidebar || app.focus == state::FocusZone::Chat => {
+                        app.activity_up();
+                    }
+                    KeyCode::Right if app.focus == state::FocusZone::Sidebar || app.focus == state::FocusZone::Chat => {
+                        app.activity_down();
+                    }
+                    // Alt+Left/Right always works
                     KeyCode::Left if key.modifiers.contains(KeyModifiers::ALT) => {
                         app.activity_up();
                     }
@@ -741,7 +751,7 @@ pub async fn run_tui_app(
                             }
                         }
                     }
-                    KeyCode::Enter => {
+                    KeyCode::Enter if app.focus == state::FocusZone::Input || app.palette_visible || app.model_picker_visible => {
                         // If palette is visible, execute the selected command
                         if app.palette_visible {
                             let commands = components::command_palette::all_commands();

crates/cli/src/tui/state.rs

@@ -175,6 +175,7 @@ pub struct App {
     pub should_quit: bool,
 
     // Cached workspace data
+    pub tool_count: usize,
     pub model_count: Option<usize>,
     pub gpu_count: Option<usize>,
     pub node_count: Option<usize>,
@@ -217,6 +218,7 @@ impl App {
             cached_providers: Vec::new(),
             project_root,
             should_quit: false,
+            tool_count: 0,
             model_count: None,
             gpu_count: None,
             node_count: None,