feat(ui): speaker diarization download cards in Settings > Hardware

src/lib/views/Settings.svelte

@@ -879,6 +879,66 @@
           {/each}
         </ul>
 
+        <h4>Speaker diarization</h4>
+        <p class="muted">
+          Install both models to have finished recordings separated by speaker (Speaker 1, Speaker
+          2, …) instead of one running transcript. Runs fully offline, once per meeting after it
+          stops. Without them, every line is attributed to a single speaker.
+        </p>
+        <ul class="models">
+          {#each settings.diarizationModels as m (m.id)}
+            {@const downloading = m.id in settings.downloadProgress}
+            {@const pct = progressPct(m.id)}
+            <li class="model" class:active={m.installed}>
+              <div class="model-info">
+                <span class="name">{m.label}</span>
+                <span class="meta">
+                  {fmtBytes(m.size_mb)}
+                  {#if m.installed}
+                    <span class="badge ok"><Check size={11} aria-hidden="true" /> Installed</span>
+                  {/if}
+                </span>
+                {#if downloading}
+                  <div
+                    class="progress"
+                    role="progressbar"
+                    aria-label="Downloading {m.label}"
+                    aria-valuenow={pct ?? undefined}
+                    aria-valuemin={0}
+                    aria-valuemax={100}
+                  >
+                    <div
+                      class="progress-fill"
+                      class:indeterminate={pct === null}
+                      style={pct !== null ? `width: ${pct}%` : ""}
+                    ></div>
+                  </div>
+                  <span class="muted progress-label"
+                    >Downloading… {pct !== null ? `${pct}%` : ""}</span
+                  >
+                {/if}
+              </div>
+              <div class="model-actions">
+                {#if downloading}
+                  <!-- no actions while a download is in flight -->
+                {:else if m.installed}
+                  <button
+                    class="icon-btn danger"
+                    title="Remove"
+                    onclick={() => settings.removeDiarizationModel(m.id)}
+                  >
+                    <Trash2 size={13} aria-hidden="true" /> Remove
+                  </button>
+                {:else}
+                  <button class="icon-btn" onclick={() => settings.downloadDiarizationModel(m.id)}>
+                    <Download size={13} aria-hidden="true" /> Download
+                  </button>
+                {/if}
+              </div>
+            </li>
+          {/each}
+        </ul>
+
         <h4>Transcription Language</h4>
         {#if activeModel?.multilingual}
           <label