Replace NTextInput with NComboBox for font settings

FontService: use Qt.fontFamilies to grab available fonts and split Mono
fonts
NComboBox: allow height changes
GeneralTab: replace NTextInput with NComboBox

Services/FontService.qml

@@ -0,0 +1,165 @@
+pragma Singleton
+
+import QtQuick
+import QtQuick.Controls
+import Quickshell
+import qs.Commons
+
+Singleton {
+  id: root
+
+  property ListModel availableFonts: ListModel {}
+  property ListModel monospaceFonts: ListModel {}
+  property ListModel displayFonts: ListModel {}
+  property bool fontsLoaded: false
+
+  Component.onCompleted: {
+
+    // Fonts will be loaded when init() is called
+  }
+
+  function init() {
+    Logger.log("FontService", "Service started")
+    loadSystemFonts()
+  }
+
+  function loadSystemFonts() {
+    Logger.log("FontService", "Loading system fonts...")
+
+    var fontFamilies = Qt.fontFamilies()
+
+    availableFonts.clear()
+    monospaceFonts.clear()
+    displayFonts.clear()
+
+    for (var i = 0; i < fontFamilies.length; i++) {
+      var fontName = fontFamilies[i]
+      if (fontName && fontName.trim() !== "") {
+        availableFonts.append({
+                                "key": fontName,
+                                "name": fontName
+                              })
+
+        if (isMonospaceFont(fontName)) {
+          monospaceFonts.append({
+                                  "key": fontName,
+                                  "name": fontName
+                                })
+        }
+
+        if (isDisplayFont(fontName)) {
+          displayFonts.append({
+                                "key": fontName,
+                                "name": fontName
+                              })
+        }
+      }
+    }
+
+    sortModel(availableFonts)
+    sortModel(monospaceFonts)
+    sortModel(displayFonts)
+
+    if (monospaceFonts.count === 0) {
+      Logger.log("FontService", "No monospace fonts detected, adding fallbacks")
+      addFallbackFonts(
+            monospaceFonts,
+            ["DejaVu Sans Mono", "Liberation Mono", "Courier New", "Courier", "Monaco", "Consolas", "Lucida Console", "Monaco", "Andale Mono"])
+    }
+
+    if (displayFonts.count === 0) {
+      Logger.log("FontService", "No display fonts detected, adding fallbacks")
+      addFallbackFonts(
+            displayFonts,
+            ["Inter", "Roboto", "Open Sans", "Arial", "Helvetica", "Verdana", "Segoe UI", "SF Pro Display", "Ubuntu", "Noto Sans"])
+    }
+
+    fontsLoaded = true
+    Logger.log("FontService", "Loaded", availableFonts.count, "fonts (", monospaceFonts.count, "monospace,",
+               displayFonts.count, "display)")
+  }
+
+  function isMonospaceFont(fontName) {
+    var patterns = ["mono", "monospace", "fixed", "console", "terminal", "typewriter", "courier", "dejavu", "liberation", "source code", "fira code", "jetbrains", "cascadia", "hack", "inconsolata", "roboto mono", "ubuntu mono", "menlo", "consolas", "monaco", "andale mono"]
+    var lowerFontName = fontName.toLowerCase()
+
+    for (var i = 0; i < patterns.length; i++) {
+      if (lowerFontName.includes(patterns[i]))
+        return true
+    }
+
+    var commonFonts = ["DejaVu Sans Mono", "Liberation Mono", "Source Code Pro", "Fira Code", "JetBrains Mono", "Cascadia Code", "Hack", "Inconsolata", "Roboto Mono", "Ubuntu Mono", "Menlo", "Consolas", "Monaco", "Andale Mono", "Courier New", "Courier", "Lucida Console", "Monaco", "MS Gothic", "MS Mincho"]
+    return commonFonts.includes(fontName)
+  }
+
+  function isDisplayFont(fontName) {
+    var patterns = ["display", "headline", "title", "hero", "showcase", "brand", "inter", "roboto", "open sans", "lato", "montserrat", "poppins", "raleway", "nunito", "source sans", "ubuntu", "noto sans", "work sans", "dm sans", "manrope", "plus jakarta", "figtree"]
+    var lowerFontName = fontName.toLowerCase()
+
+    for (var i = 0; i < patterns.length; i++) {
+      if (lowerFontName.includes(patterns[i]))
+        return true
+    }
+
+    var commonFonts = ["Inter", "Roboto", "Open Sans", "Lato", "Montserrat", "Poppins", "Raleway", "Nunito", "Source Sans Pro", "Ubuntu", "Noto Sans", "Work Sans", "DM Sans", "Manrope", "Plus Jakarta Sans", "Figtree", "SF Pro Display", "Segoe UI", "Arial", "Helvetica", "Verdana"]
+    return commonFonts.includes(fontName)
+  }
+
+  function sortModel(model) {
+    var fontsArray = []
+    for (var i = 0; i < model.count; i++) {
+      fontsArray.push({
+                        "key": model.get(i).key,
+                        "name": model.get(i).name
+                      })
+    }
+
+    fontsArray.sort(function (a, b) {
+      return a.name.localeCompare(b.name)
+    })
+
+    model.clear()
+    for (var j = 0; j < fontsArray.length; j++) {
+      model.append(fontsArray[j])
+    }
+  }
+
+  function addFallbackFonts(model, fallbackFonts) {
+    for (var i = 0; i < fallbackFonts.length; i++) {
+      var fontName = fallbackFonts[i]
+      var exists = false
+      for (var j = 0; j < model.count; j++) {
+        if (model.get(j).name === fontName) {
+          exists = true
+          break
+        }
+      }
+
+      if (!exists) {
+        model.append({
+                       "key": fontName,
+                       "name": fontName
+                     })
+      }
+    }
+
+    sortModel(model)
+  }
+
+  function searchFonts(query) {
+    if (!query || query.trim() === "")
+      return availableFonts
+
+    var results = []
+    var lowerQuery = query.toLowerCase()
+
+    for (var i = 0; i < availableFonts.count; i++) {
+      var font = availableFonts.get(i)
+      if (font.name.toLowerCase().includes(lowerQuery)) {
+        results.push(font)
+      }
+    }
+
+    return results
+  }
+}