chore: initial backup of Claude Code configuration

Includes: CLAUDE.md, settings.json, agents, commands, rules, skills,
hooks, contexts, evals, get-shit-done, plugin configs (installed list
and marketplace sources). Excludes credentials, runtime caches,
telemetry, session data, and plugin binary cache.

rules/typescript/security.md

@@ -0,0 +1,28 @@
+---
+paths:
+  - "**/*.ts"
+  - "**/*.tsx"
+  - "**/*.js"
+  - "**/*.jsx"
+---
+# TypeScript/JavaScript Security
+
+> This file extends [common/security.md](../common/security.md) with TypeScript/JavaScript specific content.
+
+## Secret Management
+
+```typescript
+// NEVER: Hardcoded secrets
+const apiKey = "sk-proj-xxxxx"
+
+// ALWAYS: Environment variables
+const apiKey = process.env.OPENAI_API_KEY
+
+if (!apiKey) {
+  throw new Error('OPENAI_API_KEY not configured')
+}
+```
+
+## Agent Support
+
+- Use **security-reviewer** skill for comprehensive security audits