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/compaction-summary-message.ts

@@ -0,0 +1,68 @@
+import {
+  Box,
+  Markdown,
+  type MarkdownTheme,
+  Spacer,
+  Text,
+} from "@mariozechner/pi-tui";
+import type { CompactionSummaryMessage } from "../../../core/messages.js";
+import { getMarkdownTheme, theme } from "../theme/theme.js";
+import { editorKey } from "./keybinding-hints.js";
+
+/**
+ * Component that renders a compaction message with collapsed/expanded state.
+ * Uses same background color as custom messages for visual consistency.
+ */
+export class CompactionSummaryMessageComponent extends Box {
+  private expanded = false;
+  private message: CompactionSummaryMessage;
+  private markdownTheme: MarkdownTheme;
+
+  constructor(
+    message: CompactionSummaryMessage,
+    markdownTheme: MarkdownTheme = getMarkdownTheme(),
+  ) {
+    super(1, 1, (t) => theme.bg("customMessageBg", t));
+    this.message = message;
+    this.markdownTheme = markdownTheme;
+    this.updateDisplay();
+  }
+
+  setExpanded(expanded: boolean): void {
+    this.expanded = expanded;
+    this.updateDisplay();
+  }
+
+  override invalidate(): void {
+    super.invalidate();
+    this.updateDisplay();
+  }
+
+  private updateDisplay(): void {
+    this.clear();
+
+    const tokenStr = this.message.tokensBefore.toLocaleString();
+    const label = theme.fg("customMessageLabel", `\x1b[1m[compaction]\x1b[22m`);
+    this.addChild(new Text(label, 0, 0));
+    this.addChild(new Spacer(1));
+
+    if (this.expanded) {
+      const header = `**Compacted from ${tokenStr} tokens**\n\n`;
+      this.addChild(
+        new Markdown(header + this.message.summary, 0, 0, this.markdownTheme, {
+          color: (text: string) => theme.fg("customMessageText", text),
+        }),
+      );
+    } else {
+      this.addChild(
+        new Text(
+          theme.fg("customMessageText", `Compacted from ${tokenStr} tokens (`) +
+            theme.fg("dim", editorKey("expandTools")) +
+            theme.fg("customMessageText", " to expand)"),
+          0,
+          0,
+        ),
+      );
+    }
+  }
+}