Initialize repository with harness code and assets

Initial import of all source code, config, and README assets: the
packages workspace (cli, core, server, web, docs, landing, skills),
build scripts, tooling config, and CI workflows.

Includes the data-layout revision made on this branch: the local data
root defaults to ~/.penguin/data (PENGUIN_HOME still overrides; the
installer keeps its binaries in ~/.penguin), and every Agent lives
under <project>/agents/<agent>/ — path helpers, the three
agent-enumeration scans, the system prompt, built-in Skills, tests
and docs all follow the new layout.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018ihk8iQuo3kv2aPjAYEPuR

packages/docs/src/lib/frontmatter.ts

@@ -0,0 +1,31 @@
+/**
+ * Minimal frontmatter parser for doc pages: a leading `---` block of `key: value`
+ * lines (values may contain colons; quotes optional). Kept dependency-free and pure
+ * so it is unit-testable without Vite. Same format as the landing page blog.
+ */
+
+export interface Frontmatter {
+  meta: Record<string, string>;
+  body: string;
+}
+
+export function parseFrontmatter(raw: string): Frontmatter {
+  const normalized = raw.replace(/\r\n/g, "\n");
+  const match = /^---\n([\s\S]*?)\n---\n?/.exec(normalized);
+  if (!match) return { meta: {}, body: normalized.trim() };
+  const meta: Record<string, string> = {};
+  for (const line of match[1]!.split("\n")) {
+    const idx = line.indexOf(":");
+    if (idx === -1) continue;
+    const key = line.slice(0, idx).trim();
+    let value = line.slice(idx + 1).trim();
+    if (
+      (value.startsWith('"') && value.endsWith('"')) ||
+      (value.startsWith("'") && value.endsWith("'"))
+    ) {
+      value = value.slice(1, -1);
+    }
+    if (key) meta[key] = value;
+  }
+  return { meta, body: normalized.slice(match[0].length).trim() };
+}