Preset out/qty=1 and use button group for movement type

When arriving at /movements/new with ?part_id=…, default to an 'out'
movement of 1 — recording a sale is the common reason to follow that
link from a part page. Also fix the part option not appearing selected
in the listbox (option value was a number, bound value a string).

Replace the type <select> with three large segmented buttons so the
most-used choice on this page is a single click.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/routes/movements/new/+page.svelte

@@ -11,7 +11,9 @@
 
   // Reference data/form directly here — the reactive `$: values = ...` above
   // hasn't run yet at component init.
-  let movementType = form?.values?.movement_type ?? 'in';
+  // When arriving with ?part_id=… (from a part detail page), default to an
+  // 'out' movement of 1 — the common case is recording a sale.
+  let movementType = form?.values?.movement_type ?? (data?.presetPartId ? 'out' : 'in');
   let partId       = String(form?.values?.part_id ?? data?.presetPartId ?? '');
   let partSearch   = '';
 
@@ -59,7 +61,8 @@
   // Quantity: for 'adjust' we pre-fill with the part's current on-hand so
   // the user can edit to the new total. Same don't-clobber-manual-edits
   // rule as unit price.
-  let quantity         = form?.values?.quantity ?? '';
+  // When arriving from a part detail page, start at 1 (the typical sale).
+  let quantity         = form?.values?.quantity ?? (data?.presetPartId ? '1' : '');
   let lastAutoQuantity = '';
 
   $: {
@@ -76,14 +79,21 @@
 <h1>{$t('movements.new')}</h1>
 
 <form class="stack" method="POST">
-  <label>
-    {$t('movements.type')}
-    <select name="movement_type" bind:value={movementType}>
-      <option value="in">{$t('movements.type_in')}</option>
-      <option value="out">{$t('movements.type_out')}</option>
-      <option value="adjust">{$t('movements.type_adjust')}</option>
-    </select>
-  </label>
+  <fieldset class="type-group">
+    <legend>{$t('movements.type')}</legend>
+    <input type="hidden" name="movement_type" value={movementType} />
+    <div class="type-buttons" role="radiogroup">
+      {#each ['in', 'out', 'adjust'] as opt}
+        <button type="button"
+                class="type-btn"
+                class:active={movementType === opt}
+                aria-pressed={movementType === opt}
+                on:click={() => (movementType = opt)}>
+          {$t('movements.type_' + opt)}
+        </button>
+      {/each}
+    </div>
+  </fieldset>
 
   <label>
     {$t('movements.part')} *
@@ -94,7 +104,7 @@
     <select name="part_id" bind:value={partId} required size={Math.min(8, Math.max(3, visibleParts.length + 1))}>
       <option value="">—</option>
       {#each visibleParts as p}
-        <option value={p.id}>
+        <option value={String(p.id)}>
           {p.sku} — {localized(p, 'name', lang)} ({$t('parts.quantity_on_hand')}: {p.quantity_on_hand})
         </option>
       {/each}
@@ -165,4 +175,40 @@
   .actions  { display: flex; gap: 1rem; align-items: center; }
   .field-error { color: #8a1f1b; font-size: 0.8rem; }
   .part-search { margin-bottom: 0.35rem; }
+
+  .type-group {
+    border: none;
+    padding: 0;
+    margin: 0;
+  }
+  .type-group legend {
+    padding: 0;
+    margin-bottom: 0.35rem;
+    font-weight: 500;
+  }
+  .type-buttons {
+    display: flex;
+    gap: 0.5rem;
+    flex-wrap: wrap;
+  }
+  .type-btn {
+    flex: 1 1 0;
+    min-width: 7rem;
+    padding: 0.85rem 1rem;
+    font-size: 1rem;
+    font-weight: 600;
+    background: #f3f4f7;
+    color: #2a2f3a;
+    border: 2px solid #d8dbe3;
+    border-radius: 6px;
+    cursor: pointer;
+    transition: background 0.1s, border-color 0.1s, color 0.1s;
+  }
+  .type-btn:hover { background: #e7eaf0; }
+  .type-btn.active {
+    background: #006a4e;
+    border-color: #006a4e;
+    color: #fff;
+  }
+  .type-btn.active:hover { background: #00553e; }
 </style>