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-lint.md

@@ -0,0 +1,127 @@
+# Package Validation (publint & attw)
+
+Validate your package configuration and type declarations before publishing.
+
+## Overview
+
+tsdown integrates with [publint](https://publint.dev/) and [Are the types wrong?](https://arethetypeswrong.github.io/) (attw) to catch common packaging issues. Both are optional dependencies.
+
+## Installation
+
+```bash
+# publint only
+npm install -D publint
+
+# attw only
+npm install -D @arethetypeswrong/core
+
+# both
+npm install -D publint @arethetypeswrong/core
+```
+
+## publint
+
+Checks that `package.json` fields (`exports`, `main`, `module`, `types`) match your actual output files.
+
+### Enable
+
+```ts
+export default defineConfig({
+  publint: true,
+})
+```
+
+### Configuration
+
+```ts
+export default defineConfig({
+  publint: {
+    level: 'error', // 'warning' | 'error' | 'suggestion'
+  },
+})
+```
+
+### CLI
+
+```bash
+tsdown --publint
+```
+
+## attw (Are the types wrong?)
+
+Verifies TypeScript declarations are correct across different module resolution strategies (`node10`, `node16`, `bundler`).
+
+### Enable
+
+```ts
+export default defineConfig({
+  attw: true,
+})
+```
+
+### Configuration
+
+```ts
+export default defineConfig({
+  attw: {
+    profile: 'node16',   // 'strict' | 'node16' | 'esm-only'
+    level: 'error',       // 'warn' | 'error'
+    ignoreRules: ['false-cjs', 'cjs-resolves-to-esm'],
+  },
+})
+```
+
+### Profiles
+
+| Profile | Description |
+|---------|-------------|
+| `strict` | Requires all resolutions to pass (default) |
+| `node16` | Ignores `node10` resolution failures |
+| `esm-only` | Ignores `node10` and `node16-cjs` resolution failures |
+
+### Ignore Rules
+
+Suppress specific problem types with `ignoreRules`:
+
+| Rule | Description |
+|------|-------------|
+| `no-resolution` | Module could not be resolved |
+| `untyped-resolution` | Resolution succeeded but has no types |
+| `false-cjs` | Types indicate CJS but implementation is ESM |
+| `false-esm` | Types indicate ESM but implementation is CJS |
+| `cjs-resolves-to-esm` | CJS resolution points to an ESM module |
+| `fallback-condition` | A fallback/wildcard condition was used |
+| `cjs-only-exports-default` | CJS module only exports a default |
+| `named-exports` | Named exports mismatch between types and implementation |
+| `false-export-default` | Types declare a default export that doesn't exist |
+| `missing-export-equals` | Types are missing `export =` for CJS |
+| `unexpected-module-syntax` | File uses unexpected module syntax |
+| `internal-resolution-error` | Internal resolution error in type checking |
+
+### CLI
+
+```bash
+tsdown --attw
+```
+
+## CI Integration
+
+Both tools support CI-aware options:
+
+```ts
+export default defineConfig({
+  publint: 'ci-only',
+  attw: {
+    enabled: 'ci-only',
+    profile: 'node16',
+    level: 'error',
+  },
+})
+```
+
+Both tools require a `package.json` in your project directory.
+
+## Related Options
+
+- [CI Environment](advanced-ci.md) - CI-aware option details
+- [Package Exports](option-package-exports.md) - Auto-generate exports field