style(journals): standardize Skeleton v4 preset-* classes across all journal components

- Replace all Skeleton v2 variant-* classes with v4 preset-* equivalents
  - variant-filled-* → preset-filled-*
  - variant-soft-* / variant-ghost-* → preset-tonal-*
  - variant-outline-* → preset-outlined-*
  - variant-form-material removed from inputs/selects/textareas
  - input-bordered removed

- Fix dark mode: journal entry content hover (dark:hover:bg-blue-950)
- Fix dark mode: journal obj view section/description bg and text colors
- Fix modal headers: add dismissable=false + explicit X close button (all 3 journals modals)
- Fix DaisyUI wrappers removed from modal_journal_entry_append
- app.css: add global select padding-inline to fix text-against-border issue

src/routes/journals/ae_comp__journal_obj_li.svelte

@@ -111,7 +111,7 @@
                 >
                     <a
                         href="/journals/{journal?.journal_id}"
-                        class="btn variant-filled-primary w-full font-bold shadow-md hover:scale-[1.02] active:scale-95 transition-all"
+                        class="btn preset-filled-primary w-full font-bold shadow-md hover:scale-[1.02] active:scale-95 transition-all"
                     >
                         <BookOpenText size="1.2em" class="mr-2" />
                         <span>Open Journal</span>
@@ -138,13 +138,13 @@
                     <div class="absolute -top-2 -right-2 flex gap-1">
                         {#if journal.hide}
                             <span
-                                class="badge-icon variant-filled-surface shadow-sm"
+                                class="badge-icon preset-tonal-surface shadow-sm"
                                 title="Hidden">🚫</span
                             >
                         {/if}
                         {#if !journal.enable}
                             <span
-                                class="badge-icon variant-filled-warning shadow-sm"
+                                class="badge-icon preset-tonal-warning shadow-sm"
                                 title="Disabled">⚠️</span
                             >
                         {/if}