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/web/src/features/chat/skills-banner.tsx

@@ -0,0 +1,18 @@
+/**
+ * Source notice for a skill invocation: the `<use_skills>` block at the start of a message isn't
+ * shown verbatim, it's collapsed into a single line reading "Using skills: <names>" (book icon +
+ * static text, no navigation — skill management lives on the skill library page); the body text
+ * after the block is rendered as usual by the caller.
+ */
+import { S } from "../../lib/strings";
+import { GlyphIcon } from "../../components/ui/glyph-icon";
+import { BOOK_ICON } from "./skill-use";
+
+export function SkillsBanner({ names }: { names: string[] }) {
+  return (
+    <p className="anim-msg my-2 flex w-fit items-center gap-2 rounded-md border border-gray-200 bg-gray-50 px-3 py-2 text-xs text-gray-600 dark:border-gray-800 dark:bg-gray-900 dark:text-gray-400">
+      <GlyphIcon d={BOOK_ICON} className="text-gray-400 dark:text-gray-500" />
+      {S.chat.skillsBanner(names)}
+    </p>
+  );
+}