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/diagram-latex.md

@@ -0,0 +1,55 @@
+---
+name: latex
+description: Render mathematical equations using KaTeX
+---
+
+# LaTeX
+
+Render mathematical equations. Powered by KaTeX.
+
+## Inline Math
+
+```md
+$\sqrt{3x-1}+(1+x)^2$
+```
+
+## Block Math
+
+```md
+$$
+\begin{aligned}
+\nabla \cdot \vec{E} &= \frac{\rho}{\varepsilon_0} \\
+\nabla \cdot \vec{B} &= 0
+\end{aligned}
+$$
+```
+
+## Line Highlighting
+
+```md
+$$ {1|3|all}
+\begin{aligned}
+\nabla \cdot \vec{E} &= \frac{\rho}{\varepsilon_0} \\
+\nabla \cdot \vec{B} &= 0 \\
+\nabla \times \vec{E} &= -\frac{\partial\vec{B}}{\partial t}
+\end{aligned}
+$$
+```
+
+## Chemical Equations
+
+Enable mhchem extension in `vite.config.ts`:
+
+```ts
+import 'katex/contrib/mhchem'
+
+export default {}
+```
+
+Then use:
+
+```md
+$$
+\ce{B(OH)3 + H2O <--> B(OH)4^- + H+}
+$$
+```