fix(settings): wrap nav tabs so the close button isn't cut off; add About page

The fixed-width settings panel overflowed horizontally because the tab nav
didn't wrap, pushing the X close button off the edge and adding a horizontal
scrollbar. nav now flex-wraps. Adds an About section: version, build commit,
and a link to the source repo (opened via open_url).

src/lib/views/Settings.svelte

@@ -24,6 +24,7 @@
     RefreshCw,
     ChevronRight,
     RotateCcw,
+    Info,
   } from "@lucide/svelte";
   import {
     OLLAMA_OPTIONS,
@@ -36,9 +37,13 @@
   let { onClose }: { onClose: () => void } = $props();
 
   let section = $state<
-    "recording" | "hardware" | "storage" | "calendar" | "sync" | "ai" | "privacy"
+    "recording" | "hardware" | "storage" | "calendar" | "sync" | "ai" | "privacy" | "about"
   >("recording");
 
+  // ---- About (version + build commit + source) ----
+  const SOURCE_URL = "https://git.dou.bet/iamdoubz/WhispAssist";
+  let appInfo = $state<{ version: string; commit: string } | null>(null);
+
   // ---- AI summary provider (T5.2, FR-LLM-1) ----
   let llmProvider = $state(settings.settings.llm_provider);
   let llmEndpoint = $state(settings.settings.llm_endpoint);
@@ -291,6 +296,10 @@
   onMount(() => {
     settings.load();
     calendar.load();
+    api
+      .appInfo()
+      .then((i) => (appInfo = i))
+      .catch(() => (appInfo = null));
     const un = events.onNpuDownload((p) => {
       if (p.stage === "model")
         npuMsg = p.total ? `Model ${Math.round((100 * (p.received ?? 0)) / p.total)}%` : "Model…";
@@ -408,6 +417,9 @@
         <button class:active={section === "privacy"} onclick={() => (section = "privacy")}>
           <ShieldCheck size={14} aria-hidden="true" /> Privacy
         </button>
+        <button class:active={section === "about"} onclick={() => (section = "about")}>
+          <Info size={14} aria-hidden="true" /> About
+        </button>
       </nav>
       <button class="close" onclick={onClose} aria-label="Close" title="Close (Esc)">
         <X size={18} aria-hidden="true" />
@@ -1017,7 +1029,7 @@
           </div>
         {/if}
       </section>
-    {:else}
+    {:else if section === "privacy"}
       <section>
         <h3>Privacy</h3>
         <p class="muted">
@@ -1122,6 +1134,22 @@
           {#if vaultMsg}<p class="muted">{vaultMsg}</p>{/if}
         {/if}
       </section>
+    {:else if section === "about"}
+      <section>
+        <h3>About</h3>
+        <p class="about-name">
+          WhispAssist <span class="about-ver">v{appInfo?.version ?? "…"}</span>
+        </p>
+        <p class="muted">A fully local, open-source, Windows-native meeting assistant.</p>
+        <div class="row">
+          Build commit<code>{appInfo?.commit ?? "…"}</code>
+        </div>
+        <p>
+          <button class="link source" onclick={() => api.openUrl(SOURCE_URL)}>
+            {SOURCE_URL} ↗
+          </button>
+        </p>
+      </section>
     {/if}
   </div>
 </div>
@@ -1151,13 +1179,19 @@
     top: 0;
     background: var(--bg-elevated);
     display: flex;
-    align-items: center;
+    align-items: flex-start;
     gap: 1rem;
     padding: 0.9rem 0;
     border-bottom: 1px solid var(--border);
   }
+  /* nav takes the middle and wraps its tabs onto a second row instead of
+     overflowing the fixed-width panel — that overflow was pushing the close
+     button off the panel edge and adding a horizontal scrollbar. */
   nav {
     display: flex;
+    flex: 1 1 auto;
+    min-width: 0;
+    flex-wrap: wrap;
     gap: 0.25rem;
   }
   nav button,
@@ -1187,6 +1221,7 @@
   .close {
     display: grid;
     place-items: center;
+    flex: 0 0 auto;
     margin-left: auto;
     width: 30px;
     height: 30px;
@@ -1417,6 +1452,23 @@
   .link.danger {
     color: var(--danger);
   }
+  .about-name {
+    font-size: 1.05rem;
+    font-weight: 600;
+    margin: 0.5rem 0 0.25rem;
+  }
+  .about-ver {
+    color: var(--muted);
+    font-weight: 500;
+  }
+  /* The source link reads as a link (accent + underline), unlike the muted
+     .link buttons used for secondary actions elsewhere. */
+  .link.source {
+    color: var(--accent);
+    text-decoration: underline;
+    padding: 0;
+    font: inherit;
+  }
   .test {
     display: inline-flex;
     align-items: center;