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/frontmatter.test.ts

@@ -0,0 +1,72 @@
+import { describe, expect, it } from "vitest";
+import {
+  parseFrontmatter,
+  stripFrontmatter,
+} from "../src/utils/frontmatter.js";
+
+describe("parseFrontmatter", () => {
+  it("parses keys, strips quotes, and returns body", () => {
+    const input =
+      "---\nname: \"skill-name\"\ndescription: 'A desc'\nfoo-bar: value\n---\n\nBody text";
+    const { frontmatter, body } =
+      parseFrontmatter<Record<string, string>>(input);
+    expect(frontmatter.name).toBe("skill-name");
+    expect(frontmatter.description).toBe("A desc");
+    expect(frontmatter["foo-bar"]).toBe("value");
+    expect(body).toBe("Body text");
+  });
+
+  it("normalizes newlines and handles CRLF", () => {
+    const input = "---\r\nname: test\r\n---\r\nLine one\r\nLine two";
+    const { body } = parseFrontmatter<Record<string, string>>(input);
+    expect(body).toBe("Line one\nLine two");
+  });
+
+  it("throws on invalid YAML frontmatter", () => {
+    const input = "---\nfoo: [bar\n---\nBody";
+    expect(() => parseFrontmatter<Record<string, string>>(input)).toThrow(
+      /at line 1, column 10/,
+    );
+  });
+
+  it("parses | multiline yaml syntax", () => {
+    const input = "---\ndescription: |\n  Line one\n  Line two\n---\n\nBody";
+    const { frontmatter, body } =
+      parseFrontmatter<Record<string, string>>(input);
+    expect(frontmatter.description).toBe("Line one\nLine two\n");
+    expect(body).toBe("Body");
+  });
+
+  it("returns original content when frontmatter is missing or unterminated", () => {
+    const noFrontmatter = "Just text\nsecond line";
+    const missingEnd = "---\nname: test\nBody without terminator";
+    const resultNoFrontmatter =
+      parseFrontmatter<Record<string, string>>(noFrontmatter);
+    const resultMissingEnd =
+      parseFrontmatter<Record<string, string>>(missingEnd);
+    expect(resultNoFrontmatter.body).toBe("Just text\nsecond line");
+    expect(resultMissingEnd.body).toBe(
+      "---\nname: test\nBody without terminator"
+        .replace(/\r\n/g, "\n")
+        .replace(/\r/g, "\n"),
+    );
+  });
+
+  it("returns empty object for empty or comment-only frontmatter", () => {
+    const input = "---\n# just a comment\n---\nBody";
+    const { frontmatter } = parseFrontmatter(input);
+    expect(frontmatter).toEqual({});
+  });
+});
+
+describe("stripFrontmatter", () => {
+  it("removes frontmatter and trims body", () => {
+    const input = "---\nkey: value\n---\n\nBody\n";
+    expect(stripFrontmatter(input)).toBe("Body");
+  });
+
+  it("returns body when no frontmatter present", () => {
+    const input = "\n  No frontmatter body  \n";
+    expect(stripFrontmatter(input)).toBe("\n  No frontmatter body  \n");
+  });
+});