Settings: db-viewer redesign, theme/accent wiring, macOS overlay titlebar (#6)

* feat: settings back button returns to origin view (push/pop nav)

* feat: redesign settings screen with db-viewer border styling

* fix: settings sidebar — icon+text tabs, back at top, top border (PR feedback)

* fix: tighten settings sidebar — back and tabs in one group

* fix: settings header shows active tab name instead of duplicated title

* fix: settings — accent back button, header shows active tab; fix App test

* fix: tags settings — no create label, no card chrome (bg/border/padding)

* feat: drag-and-drop tag reordering in settings tags tab

* fix: general settings — remove section card chrome (bg/border/padding)

* fix: merge Appearance and Interface into one settings section

* fix: remove row separators between settings items within sections

* fix: settings rows use gap spacing instead of per-row padding

* feat: strip section cards from all settings tabs; delete SettingsSection

* feat: apply theme and font size settings (appearance wiring)

* feat: honor default folder setting on startup

* feat: confirm_before_delete setting now skips delete confirmations

* feat: default_ports setting prefills new connection forms

* fix: light theme — text colors, native window chrome, ThemePicker preview

* fix: sync window background color with theme so title bar follows light mode

* fix: window-sync test uses microtask flush instead of vi.waitFor

* fix: app root carries canvas bg so home-screen parent matches theme

* fix: grant window set-theme/set-background-color permissions so title bar follows theme

* fix: overlay title bar — webview paints under traffic lights, flat canvas color in both themes

* fix: compact 28px overlay titlebar with visible bottom border

* fix: in-flow titlebar strip (draggable via allowed permission); screens fill remaining height, no bottom clipping

* fix: top border only on settings + db viewer pages, not the titlebar strip

* fix: db viewer sidebar h-screen -> h-full (28px overflow clipped bottom icons)

* fix: system theme resets window to OS before reading matchMedia (was polluted by forced window theme)

* fix: theme switcher labels moved below previews for readability

* feat: configurable accent color setting (circle palette in Appearance)

* docs: update AGENTS.md + README for settings redesign, wired settings, accent color

src/components/folders/FolderTree.tsx

@@ -27,7 +27,7 @@ export function FolderTree({ folders, activeFolderId, onSelect }: FolderTreeProp
           ref={setDropRef}
           onClick={() => onSelect(folder.id)}
           className={`flex items-center gap-1 w-full text-left px-2 py-1 rounded text-sm ${
-            isActive ? "bg-accent/20 text-white" : "text-white/70 hover:text-white"
+            isActive ? "bg-accent/20 text-text" : "text-text-muted hover:text-text"
           } ${isOver ? "ring-1 ring-accent bg-accent/10" : ""}`}
           style={{ paddingLeft: `${depth * 12 + 8}px` }}
         >
@@ -46,7 +46,7 @@ export function FolderTree({ folders, activeFolderId, onSelect }: FolderTreeProp
         ref={setRootRef}
         onClick={() => onSelect(null)}
         className={`flex items-center gap-1 w-full text-left px-2 py-1 rounded text-sm ${
-          activeFolderId === null ? "bg-accent/20 text-white" : "text-white/70 hover:text-white"
+          activeFolderId === null ? "bg-accent/20 text-text" : "text-text-muted hover:text-text"
         } ${isRootOver ? "ring-1 ring-accent bg-accent/10" : ""}`}
       >
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