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/test/truncate-to-width.test.ts

@@ -0,0 +1,84 @@
+import { truncateToWidth, visibleWidth } from "@mariozechner/pi-tui";
+import { describe, expect, it } from "vitest";
+
+/**
+ * Tests for truncateToWidth behavior with Unicode characters.
+ *
+ * These tests verify that truncateToWidth properly handles text with
+ * Unicode characters that have different byte vs display widths.
+ */
+describe("truncateToWidth", () => {
+  it("should truncate messages with Unicode characters correctly", () => {
+    // This message contains a checkmark (✔) which may have display width > 1 byte
+    const message =
+      '✔ script to run › dev $ concurrently "vite" "node --import tsx ./';
+    const width = 67;
+    const maxMsgWidth = width - 2; // Account for cursor
+
+    const truncated = truncateToWidth(message, maxMsgWidth);
+    const truncatedWidth = visibleWidth(truncated);
+
+    expect(truncatedWidth).toBeLessThanOrEqual(maxMsgWidth);
+  });
+
+  it("should handle emoji characters", () => {
+    const message =
+      "🎉 Celebration! 🚀 Launch 📦 Package ready for deployment now";
+    const width = 40;
+    const maxMsgWidth = width - 2;
+
+    const truncated = truncateToWidth(message, maxMsgWidth);
+    const truncatedWidth = visibleWidth(truncated);
+
+    expect(truncatedWidth).toBeLessThanOrEqual(maxMsgWidth);
+  });
+
+  it("should handle mixed ASCII and wide characters", () => {
+    const message = "Hello 世界 Test 你好 More text here that is long";
+    const width = 30;
+    const maxMsgWidth = width - 2;
+
+    const truncated = truncateToWidth(message, maxMsgWidth);
+    const truncatedWidth = visibleWidth(truncated);
+
+    expect(truncatedWidth).toBeLessThanOrEqual(maxMsgWidth);
+  });
+
+  it("should not truncate messages that fit", () => {
+    const message = "Short message";
+    const width = 50;
+    const maxMsgWidth = width - 2;
+
+    const truncated = truncateToWidth(message, maxMsgWidth);
+
+    expect(truncated).toBe(message);
+    expect(visibleWidth(truncated)).toBeLessThanOrEqual(maxMsgWidth);
+  });
+
+  it("should add ellipsis when truncating", () => {
+    const message = "This is a very long message that needs to be truncated";
+    const width = 30;
+    const maxMsgWidth = width - 2;
+
+    const truncated = truncateToWidth(message, maxMsgWidth);
+
+    expect(truncated).toContain("...");
+    expect(visibleWidth(truncated)).toBeLessThanOrEqual(maxMsgWidth);
+  });
+
+  it("should handle the exact crash case from issue report", () => {
+    // Terminal width was 67, line had visible width 68
+    // The problematic text contained "✔" and "›" characters
+    const message =
+      '✔ script to run › dev $ concurrently "vite" "node --import tsx ./server.ts"';
+    const terminalWidth = 67;
+    const cursorWidth = 2; // "› " or "  "
+    const maxMsgWidth = terminalWidth - cursorWidth;
+
+    const truncated = truncateToWidth(message, maxMsgWidth);
+    const finalWidth = visibleWidth(truncated);
+
+    // The final line (cursor + message) must not exceed terminal width
+    expect(finalWidth + cursorWidth).toBeLessThanOrEqual(terminalWidth);
+  });
+});