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/turnstile-spin/templates/worker/vitest.config.ts

@@ -0,0 +1,12 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+	test: {
+		globals: true,
+		// We run unit tests under Node (mocking fetch) and integration tests
+		// hit real network. Workers test pool would let us run against the
+		// real Workers runtime; defer that to fast-follow.
+		environment: 'node',
+		include: ['test/**/*.test.ts'],
+	},
+});