chore: remove preview/ directory

glossy/src/themes/twocol.typ

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+// Theme definition for a two-column glossary layout with hierarchical sections
+//
+// This theme provides formatting for three levels of glossary content:
+// 1. Section: The overall glossary container
+// 2. Groups: Optional categorization of related terms
+// 3. Entries: Individual glossary terms and their definitions
+//
+#let theme-twocol = (
+  // Renders the main glossary section as a two-column layout
+  // Parameters:
+  //   title: The glossary section title
+  //   body: Content containing all groups and entries
+  section: (title, body) => {
+    set par.line(numbering: none)
+    heading(level: 1, title)
+    columns(2, body)
+  },
+
+  // Renders a group of related glossary terms
+  // Parameters:
+  //   name: Group name (empty string for ungrouped terms)
+  //   index: Zero-based group index
+  //   total: Total number of groups
+  //   body: Content containing the group's entries
+  group: (name, index, total, body) => {
+    if name != "" and total > 1 {
+      heading(level: 2, name)
+    }
+    body
+  },
+
+  // Renders a single glossary entry with term, definition, and page references
+  // Parameters:
+  //   entry: Dictionary containing term data:
+  //     - short: Short form of term
+  //     - long: Long form of term (optional)
+  //     - description: Term description (optional)
+  //     - label: Term's dictionary label
+  //     - pages: Linked page numbers where term appears
+  //   index: Zero-based entry index within group
+  //   total: Total entries in group
+  entry: (entry, index, total) => {
+    // Format the short form and optional long form of the term
+    let short-display = text(weight: "regular", entry.short)
+    let long-display = if entry.long == none {
+      []
+    } else {
+      [#h(0.25em) -- #entry.long]
+    }
+
+    // Format the optional description
+    let description = if entry.description == none {
+      []
+    } else {
+      [: #entry.description]
+    }
+
+    // Render the complete entry with dotted leader line to page numbers
+    text(
+      size: 0.75em,
+      weight: "light",
+      grid(
+        columns: (auto,1fr,1em,auto),
+        align: (left, center, center, right),
+        [#short-display#entry.label#long-display#description],  // Term with label
+        [#repeat(h(0.25em) + "." + h(0.25em))],  // Dotted leader line
+        [ . ], // A 1em wide dot so we definitely get some break between term and pages
+        [#entry.pages]                 // Page references
+      )
+    )
+  },
+)