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/slidev/references/layout-canvas-size.md

@@ -0,0 +1,25 @@
+---
+name: canvas-size
+description: Configure slide canvas dimensions and aspect ratio
+---
+
+# Slide Canvas Size
+
+Set the canvas dimensions for all slides.
+
+## Configuration
+
+```md
+---
+aspectRatio: 16/9
+canvasWidth: 980
+---
+```
+
+- `aspectRatio`: Ratio of width to height (default: `16/9`)
+- `canvasWidth`: Canvas width in pixels (default: `980`)
+
+## Related Features
+
+- Scale individual slides: use `zoom` frontmatter option
+- Scale elements: use `<Transform>` component