feat: Complete fleet — 94 skills across 10+ domains

Pulled ALL skills from 15 source repositories:
- anthropics/skills: 16 (docs, design, MCP, testing)
- obra/superpowers: 14 (TDD, debugging, agents, planning)
- coreyhaines31/marketingskills: 25 (marketing, CRO, SEO, growth)
- better-auth/skills: 5 (auth patterns)
- vercel-labs/agent-skills: 5 (React, design, Vercel)
- antfu/skills: 16 (Vue, Vite, Vitest, pnpm, Turborepo)
- Plus 13 individual skills from various repos

Mosaic Stack is not limited to coding — the Orchestrator and
subagents serve coding, business, design, marketing, writing,
logistics, analysis, and more.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

skills/tsdown/references/option-cjs-default.md

@@ -0,0 +1,98 @@
+# CJS Default Export
+
+Control how default exports are handled in CommonJS output.
+
+## Overview
+
+The `cjsDefault` option improves compatibility when generating CommonJS modules. When enabled (default), modules with only a single default export use `module.exports = ...` instead of `exports.default = ...`.
+
+## Type
+
+```ts
+cjsDefault?: boolean  // default: true
+```
+
+## Basic Usage
+
+### Enabled (Default)
+
+```ts
+export default defineConfig({
+  entry: ['src/index.ts'],
+  format: ['cjs'],
+  cjsDefault: true,  // default behavior
+})
+```
+
+### Disabled
+
+```ts
+export default defineConfig({
+  entry: ['src/index.ts'],
+  format: ['cjs'],
+  cjsDefault: false,
+})
+```
+
+## How It Works
+
+### With `cjsDefault: true` (Default)
+
+When your module has **only a single default export**, tsdown transforms:
+
+**Source:**
+```ts
+// src/index.ts
+export default function greet() {
+  console.log('Hello, world!')
+}
+```
+
+**Generated CJS:**
+```js
+// dist/index.cjs
+function greet() {
+  console.log('Hello, world!')
+}
+module.exports = greet
+```
+
+**Generated Declaration:**
+```ts
+// dist/index.d.cts
+declare function greet(): void
+export = greet
+```
+
+This allows consumers to use `const greet = require('your-module')` directly.
+
+### With `cjsDefault: false`
+
+The default export stays as `exports.default`:
+
+```js
+// dist/index.cjs
+function greet() {
+  console.log('Hello, world!')
+}
+exports.default = greet
+```
+
+Consumers need `require('your-module').default`.
+
+## When to Disable
+
+- When your module has both default and named exports
+- When you need consistent `exports.default` behavior
+- When consumers always use ESM imports
+
+## Tips
+
+1. **Leave enabled** for most libraries (default `true`)
+2. **Disable** if you have both default and named exports and need consistent behavior
+3. **Test CJS consumers** to verify compatibility
+
+## Related Options
+
+- [Output Format](option-output-format.md) - Module formats
+- [Shims](option-shims.md) - ESM/CJS compatibility