fix(tui): restore composer focus after runtime controls

tui/src/app.test.ts

@@ -650,6 +650,7 @@ describe("NanobotTui layout", () => {
         visible: boolean
         menuRoot: { getChildren(): unknown[] }
       }
+      composer: TextareaRenderable
       titleText: TextRenderable
       status: TextRenderable
       meta: TextRenderable
@@ -680,8 +681,11 @@ describe("NanobotTui layout", () => {
       expect(modelRows.every((row) => !row.selectable)).toBe(true)
       const fast = modelRows.find((row) => row.plainText.includes("fast"))
       if (!fast) throw new Error("fast model row was not rendered")
+      ui.composer.blur()
+      expect(ui.composer.focused).toBe(false)
       await setup.mockMouse.click(fast.x + 2, fast.y)
       await waitUntil(() => sent.includes("/model fast"))
+      expect(ui.composer.focused).toBe(true)
 
       await setup.mockMouse.click(
         ui.runtimeControls.accessText.x + 2,
@@ -692,7 +696,10 @@ describe("NanobotTui layout", () => {
       const accessRows = ui.runtimeControls.menuRoot.getChildren() as TextRenderable[]
       const full = accessRows.find((row) => row.plainText.includes("Full access"))
       if (!full) throw new Error("full access row was not rendered")
+      ui.composer.blur()
+      expect(ui.composer.focused).toBe(false)
       await setup.mockMouse.click(full.x + 2, full.y)
+      expect(ui.composer.focused).toBe(true)
 
       expect(scopes).toEqual([{
         project_path: "/tmp/nanobot-workspace",

tui/src/app.ts

@@ -531,7 +531,10 @@ export class NanobotTui {
           }
         },
         onStatus: (message) => { this.status.content = message },
-        onVisibilityChange: () => this.updateMeta(),
+        onVisibilityChange: (visible) => {
+          this.updateMeta()
+          if (!visible) this.composer.focus()
+        },
       },
     )
     this.title.add(this.titleText)

tui/src/runtime-controls.ts

@@ -33,7 +33,7 @@ interface RuntimeControlsOptions {
   onModel: (name: string) => void
   onAccess: (scope: WorkspaceScopePayload) => void
   onStatus: (message: string) => void
-  onVisibilityChange: () => void
+  onVisibilityChange: (visible: boolean) => void
 }
 
 /** Model and workspace policy controls expose one small, mouse-optional interface. */
@@ -139,7 +139,7 @@ export class RuntimeControls {
     this.kind = null
     this.menu.hide()
     this.renderColors()
-    this.options.onVisibilityChange()
+    this.options.onVisibilityChange(false)
   }
 
   setTheme(theme: RuntimeControlsTheme): void {
@@ -261,7 +261,7 @@ export class RuntimeControls {
 
   private opened(): void {
     this.renderColors()
-    this.options.onVisibilityChange()
+    this.options.onVisibilityChange(true)
   }
 
   private apply(choice: Choice): void {