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/code-line-highlighting.md

@@ -0,0 +1,50 @@
+---
+name: line-highlighting
+description: Highlight specific lines in code blocks with static or click-based dynamic highlighting
+---
+
+# Line Highlighting
+
+Highlight specific lines in code blocks.
+
+## Static Highlighting
+
+````md
+```ts {2,3}
+function add(
+  a: Ref<number> | number,
+  b: Ref<number> | number
+) {
+  return computed(() => unref(a) + unref(b))
+}
+```
+````
+
+## Dynamic (Click-based)
+
+Use `|` to separate stages:
+
+````md
+```ts {2-3|5|all}
+function add(
+  a: Ref<number> | number,
+  b: Ref<number> | number
+) {
+  return computed(() => unref(a) + unref(b))
+}
+```
+````
+
+Click progression: lines 2-3 → line 5 → all lines
+
+## Special Values
+
+- `hide` - Hide the code block
+- `none` - Show code without highlighting
+- `all` - Highlight all lines
+
+````md
+```ts {hide|none|all}
+// Hidden → No highlight → All highlighted
+```
+````