feat(documents): wire folder sidebar + breadcrumb + In-progress tab

Documents hub now opens with the folder tree on the left and a
breadcrumb on top. Folder selection is its own state — undefined =
"All", null = "Root only", string = specific folder. Filter pushes
through to /api/v1/documents via folderId query param.

Drops the "Signature-based only" pill — it defaulted to true and
silently hid informational documents, which confused new reps. With
folders the rep organises by location, not by signature-vs-not.

Adds an "In progress" hub tab covering status IN (draft, sent,
partially_signed) for the everyday "what's in flight" view.

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

src/lib/services/documents.service.ts

@@ -62,6 +62,13 @@ function buildHubTabFilters(
   if (!tab || tab === 'all') return filters;
 
   switch (tab) {
+    case 'in_progress':
+      // All document types currently in-flight — the everyday "what's in flight" view.
+      filters.push(
+        inArray(documents.status, ['draft', 'sent', 'partially_signed']),
+        sql`${documents.status} != 'expired'`,
+      );
+      break;
     case 'eoi_queue':
       // EOI documents currently in-flight (drafted, sent, or partially signed).
       // Used by the dedicated tab on the documents hub to triage EOI signing
@@ -288,6 +295,7 @@ export async function listDealDocumentsForBerth(
 
 export interface HubTabCounts {
   all: number;
+  in_progress: number;
   eoi_queue: number;
   awaiting_them: number;
   awaiting_me: number;
@@ -313,16 +321,18 @@ export async function getHubTabCounts(
     return row?.count ?? 0;
   }
 
-  const [all, eoi_queue, awaiting_them, awaiting_me, completed, expired] = await Promise.all([
-    tabCount('all'),
-    tabCount('eoi_queue'),
-    tabCount('awaiting_them'),
-    tabCount('awaiting_me'),
-    tabCount('completed'),
-    tabCount('expired'),
-  ]);
+  const [all, in_progress, eoi_queue, awaiting_them, awaiting_me, completed, expired] =
+    await Promise.all([
+      tabCount('all'),
+      tabCount('in_progress'),
+      tabCount('eoi_queue'),
+      tabCount('awaiting_them'),
+      tabCount('awaiting_me'),
+      tabCount('completed'),
+      tabCount('expired'),
+    ]);
 
-  return { all, eoi_queue, awaiting_them, awaiting_me, completed, expired };
+  return { all, in_progress, eoi_queue, awaiting_them, awaiting_me, completed, expired };
 }
 
 // ─── Get by ID ────────────────────────────────────────────────────────────────

src/lib/validators/documents.ts

@@ -72,6 +72,7 @@ export type CreateDocumentWizardInput = z.infer<typeof createDocumentWizardSchem
 
 export const documentsHubTabs = [
   'all',
+  'in_progress',
   'eoi_queue',
   'awaiting_them',
   'awaiting_me',