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-log-level.md

@@ -0,0 +1,91 @@
+# Log Level
+
+Control the verbosity of build output.
+
+## Overview
+
+The `logLevel` option controls how much information tsdown displays during the build process.
+
+## Type
+
+```ts
+logLevel?: 'silent' | 'error' | 'warn' | 'info'
+```
+
+**Default:** `'info'`
+
+## Basic Usage
+
+### CLI
+
+```bash
+# Suppress all output
+tsdown --log-level silent
+
+# Only show errors
+tsdown --log-level error
+
+# Show warnings and errors
+tsdown --log-level warn
+
+# Show all info (default)
+tsdown --log-level info
+```
+
+### Config File
+
+```ts
+export default defineConfig({
+  entry: ['src/index.ts'],
+  logLevel: 'error',
+})
+```
+
+## Available Levels
+
+| Level | Shows | Use Case |
+|-------|-------|----------|
+| `silent` | Nothing | CI/CD pipelines, scripting |
+| `error` | Errors only | Minimal output |
+| `warn` | Warnings + errors | Standard CI/CD |
+| `info` | All messages | Development (default) |
+
+## Common Patterns
+
+### CI/CD Pipeline
+
+```ts
+export default defineConfig({
+  entry: ['src/index.ts'],
+  logLevel: 'error',  // Only show errors in CI
+})
+```
+
+### Scripting
+
+```ts
+export default defineConfig({
+  entry: ['src/index.ts'],
+  logLevel: 'silent',  // No output for automation
+})
+```
+
+## Fail on Warnings
+
+The `failOnWarn` option controls whether warnings cause the build to exit with a non-zero code. Defaults to `'ci-only'` — warnings fail the build in CI but not locally.
+
+```ts
+export default defineConfig({
+  failOnWarn: 'ci-only', // Default: fail on warnings only in CI
+  // failOnWarn: true,   // Always fail on warnings
+  // failOnWarn: false,  // Never fail on warnings
+})
+```
+
+See [CI Environment](advanced-ci.md) for more about CI-aware options.
+
+## Related Options
+
+- [CI Environment](advanced-ci.md) - CI-aware option details
+- [CLI Reference](reference-cli.md) - All CLI options
+- [Config File](option-config-file.md) - Configuration setup