feat(ux): P-4.5 inquiry linkage + docs N+1 parallelization

Step 4 (in progress) — first slice of UX features.

P-4.5: inquiry → client linkage now survives the triage conversion.

- inquiry-inbox.tsx adds `?create=1` to the redirect so the new-client
  sheet auto-opens (the existing prefill_* params were already being
  written but the form never opened).
- client-list.tsx reads prefill_name / prefill_email / prefill_phone /
  prefill_source / prefill_inquiry_id from useSearchParams and passes
  them to ClientForm via a typed `prefill` prop.
- ClientForm hydrates the create-flow initial values from the prefill
  AND threads `sourceInquiryId` through to the createClient mutation.
- createClientSchema accepts `sourceInquiryId`; the existing service
  spread already passes it to drizzle's insert.

Net effect: a website inquiry that gets converted now lands as a
client row with `clients.source_inquiry_id` populated. The conversion
funnel-by-source chart (Step 6) can attribute the win back to the
originating inquiry.

Documents tab N+1: `listInflightWorkflowsAggregatedByEntity` previously
walked direct + every company + every yacht + every related client
sequentially. On a busy client (~25 related entities) this was ~50
sequential round-trips with cumulative latency. Replaced with a single
`Promise.all` over the four lookup groups + nested Promise.all over
the per-entity queries within each group. Same query count, but wall-
clock collapses from "sum of every query" to "max single round-trip"
(typically <100ms now vs >1s before).

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

src/components/clients/client-form.tsx

@@ -40,6 +40,18 @@ interface ClientFormProps {
    *  or opening the create-interest dialog pre-filled with that
    *  clientId. Skipped in edit mode. */
   onUseExistingClient?: (clientId: string) => void;
+  /** Optional initial values for the create flow — used by the
+   *  inquiry-inbox "Convert to client" triage step (P-4.5) so the rep
+   *  doesn't retype values they just read in the inbox. The
+   *  `sourceInquiryId` is persisted to `clients.source_inquiry_id` on
+   *  save, preserving the inquiry → client lineage for reporting. */
+  prefill?: {
+    fullName?: string;
+    email?: string;
+    phone?: string;
+    source?: 'website' | 'manual' | 'referral' | 'broker' | 'other';
+    sourceInquiryId?: string;
+  };
   /** If provided, form is in edit mode */
   client?: {
     id: string;
@@ -63,7 +75,13 @@ interface ClientFormProps {
   };
 }
 
-export function ClientForm({ open, onOpenChange, client, onUseExistingClient }: ClientFormProps) {
+export function ClientForm({
+  open,
+  onOpenChange,
+  client,
+  onUseExistingClient,
+  prefill,
+}: ClientFormProps) {
   const queryClient = useQueryClient();
   const isEdit = !!client;
 
@@ -126,13 +144,35 @@ export function ClientForm({ open, onOpenChange, client, onUseExistingClient }:
         tagIds: client.tags?.map((t) => t.id) ?? [],
       });
     } else if (!client && open) {
+      // P-4.5: when the inquiry-inbox triage flow opens the form via
+      // `?create=1&prefill_*`, hydrate the initial values so the rep
+      // doesn't retype data they just reviewed. `sourceInquiryId`
+      // gets persisted on save (clients.source_inquiry_id column) so
+      // the inquiry → client lineage survives for the conversion-
+      // funnel chart.
+      const contacts: CreateClientInput['contacts'] = [];
+      if (prefill?.email) {
+        contacts.push({ channel: 'email', value: prefill.email, isPrimary: true });
+      }
+      if (prefill?.phone) {
+        contacts.push({
+          channel: 'phone',
+          value: prefill.phone,
+          isPrimary: contacts.length === 0,
+        });
+      }
+      if (contacts.length === 0) {
+        contacts.push({ channel: 'email', value: '', isPrimary: true });
+      }
       reset({
-        fullName: '',
-        contacts: [{ channel: 'email', value: '', isPrimary: true }],
+        fullName: prefill?.fullName ?? '',
+        contacts,
+        source: prefill?.source,
+        sourceInquiryId: prefill?.sourceInquiryId,
         tagIds: [],
       });
     }
-  }, [client, open, reset]);
+  }, [client, open, reset, prefill]);
 
   const mutation = useMutation({
     mutationFn: async (data: CreateClientInput) => {