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_entry_editor.svelte

@@ -81,7 +81,7 @@
                         </p>
                         <button
                             type="button"
-                            class="btn btn-sm variant-filled-error font-bold"
+                            class="btn btn-sm preset-tonal-error hover:preset-filled-error-500 font-bold"
                             onclick={on_force_reset}
                         >
                             <RefreshCcw size="1.1em" class="mr-2" /> Force Reset to
@@ -113,7 +113,7 @@
                 type="button"
                 onclick={on_save}
                 disabled={!has_changed}
-                class="btn btn-sm md:btn-md lg:btn-lg fixed top-72 right-6 min-w-32 variant-filled-success shadow-xl z-20 transition-all"
+                class="btn btn-sm md:btn-md lg:btn-lg fixed top-72 right-6 min-w-32 preset-filled-success shadow-xl z-20 transition-all"
                 class:hidden={!has_changed}
             >
                 <Save size="1.2em" class="mr-2" /> Save
@@ -124,7 +124,7 @@
                 type="button"
                 onclick={on_save}
                 disabled={!has_changed}
-                class="btn variant-filled-warning w-full max-w-96 mt-4"
+                class="btn preset-tonal-warning hover:preset-filled-warning-500 w-full max-w-96 mt-4"
                 class:invisible={!has_changed}
             >
                 <Save size="1.2em" class="mr-2" /> Save Changes