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/vitest/references/features-coverage.md

@@ -0,0 +1,207 @@
+---
+name: code-coverage
+description: Code coverage with V8 or Istanbul providers
+---
+
+# Code Coverage
+
+## Setup
+
+```bash
+# Run tests with coverage
+vitest run --coverage
+```
+
+## Configuration
+
+```ts
+// vitest.config.ts
+defineConfig({
+  test: {
+    coverage: {
+      // Provider: 'v8' (default, faster) or 'istanbul' (more compatible)
+      provider: 'v8',
+      
+      // Enable coverage
+      enabled: true,
+      
+      // Reporters
+      reporter: ['text', 'json', 'html'],
+      
+      // Files to include
+      include: ['src/**/*.{ts,tsx}'],
+      
+      // Files to exclude
+      exclude: [
+        'node_modules/',
+        'tests/',
+        '**/*.d.ts',
+        '**/*.test.ts',
+      ],
+      
+      // Report uncovered files
+      all: true,
+      
+      // Thresholds
+      thresholds: {
+        lines: 80,
+        functions: 80,
+        branches: 80,
+        statements: 80,
+      },
+    },
+  },
+})
+```
+
+## Providers
+
+### V8 (Default)
+
+```bash
+npm i -D @vitest/coverage-v8
+```
+
+- Faster, no pre-instrumentation
+- Uses V8's native coverage
+- Recommended for most projects
+
+### Istanbul
+
+```bash
+npm i -D @vitest/coverage-istanbul
+```
+
+- Pre-instruments code
+- Works in any JS runtime
+- More overhead but widely compatible
+
+## Reporters
+
+```ts
+coverage: {
+  reporter: [
+    'text',           // Terminal output
+    'text-summary',   // Summary only
+    'json',           // JSON file
+    'html',           // HTML report
+    'lcov',           // For CI tools
+    'cobertura',      // XML format
+  ],
+  reportsDirectory: './coverage',
+}
+```
+
+## Thresholds
+
+Fail tests if coverage is below threshold:
+
+```ts
+coverage: {
+  thresholds: {
+    // Global thresholds
+    lines: 80,
+    functions: 75,
+    branches: 70,
+    statements: 80,
+    
+    // Per-file thresholds
+    perFile: true,
+    
+    // Auto-update thresholds (for gradual improvement)
+    autoUpdate: true,
+  },
+}
+```
+
+## Ignoring Code
+
+### V8
+
+```ts
+/* v8 ignore next -- @preserve */
+function ignored() {
+  return 'not covered'
+}
+
+/* v8 ignore start -- @preserve */
+// All code here ignored
+/* v8 ignore stop -- @preserve */
+```
+
+### Istanbul
+
+```ts
+/* istanbul ignore next -- @preserve */
+function ignored() {}
+
+/* istanbul ignore if -- @preserve */
+if (condition) {
+  // ignored
+}
+```
+
+Note: `@preserve` keeps comments through esbuild.
+
+## Package.json Scripts
+
+```json
+{
+  "scripts": {
+    "test": "vitest",
+    "test:coverage": "vitest run --coverage",
+    "test:coverage:watch": "vitest --coverage"
+  }
+}
+```
+
+## Vitest UI Coverage
+
+Enable HTML coverage in Vitest UI:
+
+```ts
+coverage: {
+  enabled: true,
+  reporter: ['text', 'html'],
+}
+```
+
+Run with `vitest --ui` to view coverage visually.
+
+## CI Integration
+
+```yaml
+# GitHub Actions
+- name: Run tests with coverage
+  run: npm run test:coverage
+
+- name: Upload coverage to Codecov
+  uses: codecov/codecov-action@v3
+  with:
+    files: ./coverage/lcov.info
+```
+
+## Coverage with Sharding
+
+Merge coverage from sharded runs:
+
+```bash
+vitest run --shard=1/3 --coverage --reporter=blob
+vitest run --shard=2/3 --coverage --reporter=blob
+vitest run --shard=3/3 --coverage --reporter=blob
+
+vitest --merge-reports --coverage --reporter=json
+```
+
+## Key Points
+
+- V8 is faster, Istanbul is more compatible
+- Use `--coverage` flag or `coverage.enabled: true`
+- Include `all: true` to see uncovered files
+- Set thresholds to enforce minimum coverage
+- Use `@preserve` comment to keep ignore hints
+
+<!-- 
+Source references:
+- https://vitest.dev/guide/coverage.html
+-->