feat(interests): desired-dimension form fields + size-desired column

Surfaces the recommender inputs added in Phase 2a (interests
.desired_length_ft / desired_width_ft / desired_draft_ft) on the
two interfaces reps actually use:

- /interests list: new "Berth size desired" column rendered as a
  compact "60×18×6 ft" string. Cells with no dimensions show "-";
  partial dimensions render "?" for the missing axis (recommender
  treats null as "no constraint").
- New/Edit Interest form: three optional length/width/draft inputs
  with explanatory subhead. Empty submissions collapse to undefined
  so the API doesn't see "" -> numeric coercion errors.
- createInterestSchema gains the three optional desired-dim fields
  with a shared transform that coerces strings/numbers to a positive
  2-decimal numeric string for the postgres `numeric` column.

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

src/components/interests/interest-form.tsx

@@ -66,6 +66,9 @@ interface InterestFormProps {
     reminderEnabled?: boolean;
     reminderDays?: number | null;
     tags?: Array<{ id: string }>;
+    desiredLengthFt?: string | number | null;
+    desiredWidthFt?: string | number | null;
+    desiredDraftFt?: string | number | null;
   };
 }
 
@@ -131,6 +134,18 @@ export function InterestForm({ open, onOpenChange, defaultClientId, interest }:
         reminderEnabled: interest.reminderEnabled ?? false,
         reminderDays: interest.reminderDays ?? undefined,
         tagIds: interest.tags?.map((t) => t.id) ?? [],
+        desiredLengthFt:
+          interest.desiredLengthFt === null || interest.desiredLengthFt === undefined
+            ? undefined
+            : String(interest.desiredLengthFt),
+        desiredWidthFt:
+          interest.desiredWidthFt === null || interest.desiredWidthFt === undefined
+            ? undefined
+            : String(interest.desiredWidthFt),
+        desiredDraftFt:
+          interest.desiredDraftFt === null || interest.desiredDraftFt === undefined
+            ? undefined
+            : String(interest.desiredDraftFt),
       });
     } else if (!interest && open) {
       reset({
@@ -394,6 +409,54 @@ export function InterestForm({ open, onOpenChange, defaultClientId, interest }:
 
           <Separator />
 
+          {/* Desired berth dimensions (recommender inputs) */}
+          <div className="space-y-2">
+            <h3 className="text-sm font-medium text-muted-foreground uppercase tracking-wide">
+              Berth size desired
+            </h3>
+            <p className="text-xs text-muted-foreground">
+              Imperial. Optional - the recommender treats blank fields as no constraint on that
+              axis.
+            </p>
+            <div className="grid grid-cols-3 gap-3">
+              <div className="space-y-1">
+                <Label htmlFor="desiredLengthFt">Length (ft)</Label>
+                <Input
+                  id="desiredLengthFt"
+                  {...register('desiredLengthFt')}
+                  type="number"
+                  step="0.01"
+                  min={0}
+                  placeholder="e.g. 60"
+                />
+              </div>
+              <div className="space-y-1">
+                <Label htmlFor="desiredWidthFt">Width (ft)</Label>
+                <Input
+                  id="desiredWidthFt"
+                  {...register('desiredWidthFt')}
+                  type="number"
+                  step="0.01"
+                  min={0}
+                  placeholder="e.g. 18"
+                />
+              </div>
+              <div className="space-y-1">
+                <Label htmlFor="desiredDraftFt">Draft (ft)</Label>
+                <Input
+                  id="desiredDraftFt"
+                  {...register('desiredDraftFt')}
+                  type="number"
+                  step="0.01"
+                  min={0}
+                  placeholder="e.g. 6"
+                />
+              </div>
+            </div>
+          </div>
+
+          <Separator />
+
           {/* Notes */}
           <div className="space-y-2">
             <Label>Notes</Label>