style: fix missed Phase 1/2 items — FA→Lucide, a11y, variant-* cleanup

- +layout.svelte: replace fa-cog/fa-spinner spinners with LoaderCircle;
  variant-filled-primary → preset-filled-primary on reload button
- events/+page.svelte: fa-calendar-alt → CalendarDays, fa-exclamation-triangle
  → TriangleAlert (+ text-red-500 → text-error-500), fa-spinner → LoaderCircle
- sign_in_out.svelte: fa-times → X, fa-sign-in-alt → LogIn
- journals/+layout.svelte: fa-arrow-right → ArrowRight
- journal_entry_header.svelte: fix focus:ring-0 → focus:ring-2 focus:ring-primary-500
  (WCAG 2.1 AA — removes keyboard focus indicator violation)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/routes/journals/ae_comp__journal_entry_header.svelte

@@ -105,7 +105,7 @@
                 <input
                     type="text"
                     bind:value={tmp_entry_obj.name}
-                    class="input input-sm font-bold text-lg grow md:min-w-[300px] border-none bg-transparent focus:ring-0"
+                    class="input input-sm font-bold text-lg grow md:min-w-[300px] border-none bg-transparent focus:ring-2 focus:ring-primary-500"
                     placeholder="Entry Title..."
                     onchange={on_save}
                 />