feat: UI Changes

* fix(#220): implement edit soul and set model dialogs

* fix(#211): make UI more compact and information dense

* fix(#211): make navigation drawer sidebar more compact

* feat(#252): move settings item to end of navigation drawer

* feat(#250): add bottom navigation bar display mode settings

* feat(#225): add search bar filtering to remaining screens

* fix: make bottom navigation bar display modes more compact

* fix: resolve compilation error in KanbanScreen by referencing assignedTo

* feat: add search to achievements screen and top padding for icon-only navigation bar

* fix: adjust icon-only bottom bar height and remove padding

* fix(#249): remove unused PaddingValues imports in 6 screens

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Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/main/java/com/m57/hermescontrol/theme/Spacing.kt

@@ -18,12 +18,12 @@ import androidx.compose.ui.unit.dp
  * Access in composables via `LocalSpacing.current` or the [Spacing] object.
  */
 object Spacing {
-    val xs = 4.dp
-    val sm = 8.dp
-    val md = 16.dp
-    val lg = 24.dp
-    val xl = 32.dp
-    val xxl = 48.dp
+    val xs = 2.dp
+    val sm = 6.dp
+    val md = 12.dp
+    val lg = 18.dp
+    val xl = 24.dp
+    val xxl = 36.dp
 }
 
 /** Alias for backwards-compatibility — existing `Spacing.xs` calls still work. */