config(git,claude,ssh): templated gitconfig; claude settings/commands/hooks/skills; ssh config

gitconfig: name/email from chezmoi data, gh credential helper by PATH
lookup (portable to darwin). claude: no credentials, history, projects,
sessions, or plugin caches. ssh config as private_ (0600).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

dot_claude/skills/sandbox-sdk/references/examples.md

@@ -0,0 +1,49 @@
+# Sandbox SDK Examples
+
+All examples: https://github.com/cloudflare/sandbox-sdk/tree/main/examples
+
+## Example Index
+
+| Example | Use Case | Key File |
+|---------|----------|----------|
+| `minimal` | Basic setup, exec, file ops | `src/index.ts` |
+| `code-interpreter` | AI code execution with Workers AI | `src/index.ts` |
+| `openai-agents` | OpenAI Agents SDK integration | `src/index.ts` |
+| `opencode` | OpenCode agent integration | `src/index.ts` |
+| `claude-code` | Claude Code agent integration | `src/index.ts` |
+| `typescript-validator` | TypeScript compilation/validation | `src/index.ts` |
+| `authentication` | Auth patterns for sandboxes | `src/index.ts` |
+
+## When to Use Which Example
+
+| Building | Start With |
+|----------|------------|
+| AI code execution | `code-interpreter` |
+| Agent with shell + file editing | `openai-agents` |
+| Basic command execution | `minimal` |
+| Code validation service | `typescript-validator` |
+| Multi-user sandboxes | `authentication` |
+
+## Common Patterns from Examples
+
+**Sandbox per user/session** (from `openai-agents`):
+```typescript
+const sandbox = getSandbox(env.Sandbox, `session-${sessionId}`);
+```
+
+**Code context reuse** (from `code-interpreter`):
+```typescript
+const pythonCtx = await sandbox.createCodeContext({ language: 'python' });
+const result = await sandbox.runCode(code, { context: pythonCtx });
+```
+
+**Resource cleanup** (from `code-interpreter`):
+```typescript
+try {
+  // ... use sandbox
+} finally {
+  await sandbox.destroy();
+}
+```
+
+Fetch the full example source when implementing similar patterns.