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/cli/src/index.ts

@@ -0,0 +1,46 @@
+/**
+ * PenguinHarness CLI entry point.
+ *
+ * Only responsible for parsing CLI input into SDK arguments and rendering the streaming
+ * OmniMessage returned by the SDK.
+ * Loads .env on startup (e.g. locally configured ANTHROPIC_API_KEY / ANTHROPIC_BASE_URL).
+ *
+ *   penguin config model add|default ...
+ *   penguin chat ...
+ *   penguin run --message ...
+ *   penguin server|web ...
+ * Docs: packages/docs/content/cli.{zh,en}.md (site path /docs/cli).
+ */
+import "dotenv/config";
+import { Command } from "commander";
+import { VERSION } from "@prismshadow/penguin-core";
+import { registerConfigCommand } from "./commands/config.js";
+import { registerRunCommand } from "./commands/run.js";
+import { registerChatCommand } from "./commands/chat.js";
+import { registerServeCommands } from "./commands/serve.js";
+import { defaultMessages } from "./i18n.js";
+
+// Language comes from the PENGUIN_LANG env var (default en); used consistently for
+// command/option descriptions and runtime output.
+const t = defaultMessages();
+
+const program = new Command();
+program
+  .name("penguin")
+  .description(t.cliDescription)
+  .version(VERSION, "-v, --version", t.versionDesc);
+
+registerConfigCommand(program, t);
+registerRunCommand(program, t);
+registerChatCommand(program, t);
+registerServeCommands(program, t);
+
+// Show help only when no subcommand is given (empty input); do not error.
+program.action(() => {
+  program.outputHelp();
+});
+
+program.parseAsync(process.argv).catch((err: unknown) => {
+  process.stderr.write(`${err instanceof Error ? err.message : String(err)}\n`);
+  process.exitCode = 1;
+});