move pi-mono into companion-cloud as apps/companion-os

- Copy all pi-mono source into apps/companion-os/
- Update Dockerfile to COPY pre-built binary instead of downloading from GitHub Releases
- Update deploy-staging.yml to build pi from source (bun compile) before Docker build
- Add apps/companion-os/** to path triggers
- No more cross-repo dispatch needed

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/coding-agent/src/modes/interactive/components/extension-selector.ts

@@ -0,0 +1,119 @@
+/**
+ * Generic selector component for extensions.
+ * Displays a list of string options with keyboard navigation.
+ */
+
+import {
+  Container,
+  getEditorKeybindings,
+  Spacer,
+  Text,
+  type TUI,
+} from "@mariozechner/pi-tui";
+import { theme } from "../theme/theme.js";
+import { CountdownTimer } from "./countdown-timer.js";
+import { DynamicBorder } from "./dynamic-border.js";
+import { keyHint, rawKeyHint } from "./keybinding-hints.js";
+
+export interface ExtensionSelectorOptions {
+  tui?: TUI;
+  timeout?: number;
+}
+
+export class ExtensionSelectorComponent extends Container {
+  private options: string[];
+  private selectedIndex = 0;
+  private listContainer: Container;
+  private onSelectCallback: (option: string) => void;
+  private onCancelCallback: () => void;
+  private titleText: Text;
+  private baseTitle: string;
+  private countdown: CountdownTimer | undefined;
+
+  constructor(
+    title: string,
+    options: string[],
+    onSelect: (option: string) => void,
+    onCancel: () => void,
+    opts?: ExtensionSelectorOptions,
+  ) {
+    super();
+
+    this.options = options;
+    this.onSelectCallback = onSelect;
+    this.onCancelCallback = onCancel;
+    this.baseTitle = title;
+
+    this.addChild(new DynamicBorder());
+    this.addChild(new Spacer(1));
+
+    this.titleText = new Text(theme.fg("accent", title), 1, 0);
+    this.addChild(this.titleText);
+    this.addChild(new Spacer(1));
+
+    if (opts?.timeout && opts.timeout > 0 && opts.tui) {
+      this.countdown = new CountdownTimer(
+        opts.timeout,
+        opts.tui,
+        (s) =>
+          this.titleText.setText(
+            theme.fg("accent", `${this.baseTitle} (${s}s)`),
+          ),
+        () => this.onCancelCallback(),
+      );
+    }
+
+    this.listContainer = new Container();
+    this.addChild(this.listContainer);
+    this.addChild(new Spacer(1));
+    this.addChild(
+      new Text(
+        rawKeyHint("↑↓", "navigate") +
+          "  " +
+          keyHint("selectConfirm", "select") +
+          "  " +
+          keyHint("selectCancel", "cancel"),
+        1,
+        0,
+      ),
+    );
+    this.addChild(new Spacer(1));
+    this.addChild(new DynamicBorder());
+
+    this.updateList();
+  }
+
+  private updateList(): void {
+    this.listContainer.clear();
+    for (let i = 0; i < this.options.length; i++) {
+      const isSelected = i === this.selectedIndex;
+      const text = isSelected
+        ? theme.fg("accent", "→ ") + theme.fg("accent", this.options[i])
+        : `  ${theme.fg("text", this.options[i])}`;
+      this.listContainer.addChild(new Text(text, 1, 0));
+    }
+  }
+
+  handleInput(keyData: string): void {
+    const kb = getEditorKeybindings();
+    if (kb.matches(keyData, "selectUp") || keyData === "k") {
+      this.selectedIndex = Math.max(0, this.selectedIndex - 1);
+      this.updateList();
+    } else if (kb.matches(keyData, "selectDown") || keyData === "j") {
+      this.selectedIndex = Math.min(
+        this.options.length - 1,
+        this.selectedIndex + 1,
+      );
+      this.updateList();
+    } else if (kb.matches(keyData, "selectConfirm") || keyData === "\n") {
+      const selected = this.options[this.selectedIndex];
+      if (selected) this.onSelectCallback(selected);
+    } else if (kb.matches(keyData, "selectCancel")) {
+      this.onCancelCallback();
+    }
+  }
+
+  dispose(): void {
+    this.countdown?.dispose();
+  }
+}