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/tui/src/editor-component.ts

@@ -0,0 +1,74 @@
+import type { AutocompleteProvider } from "./autocomplete.js";
+import type { Component } from "./tui.js";
+
+/**
+ * Interface for custom editor components.
+ *
+ * This allows extensions to provide their own editor implementation
+ * (e.g., vim mode, emacs mode, custom keybindings) while maintaining
+ * compatibility with the core application.
+ */
+export interface EditorComponent extends Component {
+  // =========================================================================
+  // Core text access (required)
+  // =========================================================================
+
+  /** Get the current text content */
+  getText(): string;
+
+  /** Set the text content */
+  setText(text: string): void;
+
+  /** Handle raw terminal input (key presses, paste sequences, etc.) */
+  handleInput(data: string): void;
+
+  // =========================================================================
+  // Callbacks (required)
+  // =========================================================================
+
+  /** Called when user submits (e.g., Enter key) */
+  onSubmit?: (text: string) => void;
+
+  /** Called when text changes */
+  onChange?: (text: string) => void;
+
+  // =========================================================================
+  // History support (optional)
+  // =========================================================================
+
+  /** Add text to history for up/down navigation */
+  addToHistory?(text: string): void;
+
+  // =========================================================================
+  // Advanced text manipulation (optional)
+  // =========================================================================
+
+  /** Insert text at current cursor position */
+  insertTextAtCursor?(text: string): void;
+
+  /**
+   * Get text with any markers expanded (e.g., paste markers).
+   * Falls back to getText() if not implemented.
+   */
+  getExpandedText?(): string;
+
+  // =========================================================================
+  // Autocomplete support (optional)
+  // =========================================================================
+
+  /** Set the autocomplete provider */
+  setAutocompleteProvider?(provider: AutocompleteProvider): void;
+
+  // =========================================================================
+  // Appearance (optional)
+  // =========================================================================
+
+  /** Border color function */
+  borderColor?: (str: string) => string;
+
+  /** Set horizontal padding */
+  setPaddingX?(padding: number): void;
+
+  /** Set max visible items in autocomplete dropdown */
+  setAutocompleteMaxVisible?(maxVisible: number): void;
+}