chore: consolidate new foundation and archive v1 (#1495)

v1/packages/mosaic/framework/skills/slidev/references/code-line-highlighting.md

@@ -0,0 +1,44 @@
+---
+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
+```
+````