chore: add ion package, codesight wiki, work plans, ascli config

New @boocode/ion package (v0.0.1) for inference optimization network.
.codesight/ wiki artifacts for codebase documentation.
.omo/ work plans for openspec cleanup and enhanced file panel.

packages/ion/src/cli/commands/cleanup.ts

@@ -0,0 +1,74 @@
+/**
+ * `workflow cleanup` — Remove old workflow run artifacts.
+ *
+ * Default retention: 7 days. Removes run data older than the specified
+ * number of days.
+ *
+ * @example
+ *   workflow cleanup
+ *   workflow cleanup 30 --json
+ */
+
+import type { CliOptions } from '../utils.js';
+import { printJson } from '../utils.js';
+
+// ---------------------------------------------------------------------------
+// Stub: engine integration (not implemented yet)
+// ---------------------------------------------------------------------------
+
+interface CleanupResult {
+  removedRuns: number;
+  removedEvents: number;
+  freedBytes: number;
+  retentionDays: number;
+}
+
+async function cleanupWorkflowRuns(
+  _days: number,
+  _cwd?: string,
+): Promise<CleanupResult> {
+  throw new Error('not implemented yet: cleanupWorkflowRuns');
+}
+
+// ---------------------------------------------------------------------------
+// Command handler
+// ---------------------------------------------------------------------------
+
+export async function cleanupCommand(
+  args: string[],
+  options: CliOptions,
+): Promise<void> {
+  // First positional arg is the number of days (default 7).
+  const days = args.length > 0 ? parseInt(args[0]!, 10) : 7;
+
+  if (isNaN(days) || days < 1) {
+    throw new Error(`Invalid retention days: ${args[0]}. Must be a positive integer.`);
+  }
+
+  const result = await cleanupWorkflowRuns(days, options.cwd);
+
+  if (options.json) {
+    printJson(result);
+    return;
+  }
+
+  console.log(`Cleanup complete (retention: ${result.retentionDays} days).`);
+  console.log(`  Runs removed: ${result.removedRuns}`);
+  console.log(`  Events removed: ${result.removedEvents}`);
+  console.log(`  Space freed: ${formatBytes(result.freedBytes)}`);
+}
+
+// ---------------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------------
+
+function formatBytes(bytes: number): string {
+  if (bytes === 0) return '0 B';
+  const units = ['B', 'KB', 'MB', 'GB'];
+  const i = Math.min(
+    Math.floor(Math.log(bytes) / Math.log(1024)),
+    units.length - 1,
+  );
+  const value = bytes / Math.pow(1024, i);
+  return `${value.toFixed(i === 0 ? 0 : 1)} ${units[i]}`;
+}