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/core/src/trace/index.ts

@@ -0,0 +1,10 @@
+export { Writer, readTrace } from "./writer.js";
+export type { WriterOptions } from "./writer.js";
+export {
+  findLatestTraceFile,
+  latestSessionId,
+  parseTraceLines,
+  readTraceTolerant,
+  resumeTrace,
+} from "./resume.js";
+export type { LocatedTraceFile, ResumeResult } from "./resume.js";