refactor: Blueprint UI — catalog-based field selection

Replace manual field definition with a visual field catalog where admins
toggle available attributes on/off and set defaults inline.

New files:
- blueprint-field-catalog.ts: 36 pre-defined fields across 7 categories
  (Client & Billing, Technical Specs, Scope, Person Info, Organization,
  Contract, Skills & Work) for both PROJECT and RESOURCE targets
- FieldCard.tsx: toggle card with type icon, expandable default value
  editor, required/show-in-list toggles, helper text
- BlueprintFieldCatalog.tsx: main catalog modal with category sidebar,
  search bar, collapsible sections, custom field support

UX improvements:
- All standard fields pre-defined — users toggle instead of typing
- Default values set inline on each card (type-appropriate inputs)
- Fields grouped by category with enable counts
- Search/filter to find fields quickly
- Custom fields still supported via "Add Custom Field"
- Full backward compatibility: existing fieldDefs auto-map to catalog

Co-Authored-By: claude-flow <ruv@ruv.net>

apps/web/src/components/blueprints/BlueprintsClient.tsx

@@ -5,7 +5,7 @@ import type { FormEvent, MouseEvent } from "react";
 import { BlueprintTarget } from "@planarchy/shared";
 import type { BlueprintFieldDefinition } from "@planarchy/shared";
 import { trpc } from "~/lib/trpc/client.js";
-import { BlueprintFieldEditor } from "./BlueprintFieldEditor.js";
+import { BlueprintFieldCatalog } from "./BlueprintFieldCatalog.js";
 import { useSelection } from "~/hooks/useSelection.js";
 import { BatchActionBar } from "~/components/ui/BatchActionBar.js";
 import { ConfirmDialog } from "~/components/ui/ConfirmDialog.js";
@@ -496,9 +496,10 @@ export function BlueprintsClient() {
       )}
 
       {editingBlueprint && (
-        <BlueprintFieldEditor
+        <BlueprintFieldCatalog
           blueprintId={editingBlueprint.id}
           blueprintName={editingBlueprint.name}
+          blueprintTarget={editingBlueprint.target}
           initialFieldDefs={Array.isArray(editingBlueprint.fieldDefs) ? (editingBlueprint.fieldDefs as BlueprintFieldDefinition[]) : []}
           initialRolePresets={Array.isArray(editingBlueprint.rolePresets) ? (editingBlueprint.rolePresets as import("@planarchy/shared").StaffingRequirement[]) : []}
           initialTab={editingTab}