feat: plan/limit system + role-based page access

Plan & limit enforcement:
- src/lib/plans.ts: PLAN_LIMITS (free: 15 props, 25 customers, 5 presentations, 1 member, 5 imgs/prop)
- checkLimit() + limitErrorMessage() — role-aware error messages (owner: upgrade CTA, others: contact admin)
- Create actions (property, customer, presentation, team invite): hard limit check before create
- PropertyImageUploader: maxImages prop + isOwner-aware toast
- UsageBadge component: usage counter shown only to owner (green→amber→red)

Role-based access:
- TenantContext + ActiveContext: add memberCount + role fields
- Dashboard layout: non-owner on free plan with >1 member → /plan-limit
- /plan-limit: blocked-access page with owner contact info + sign-out
- AppSidebar: minRole filtering — Plan & Faturalama (owner only), Çalışma Alanı/Yatırımcılar (admin+)
- settings/billing: owner-only hard redirect
- settings/workspace + settings/members: member redirect, admin read-only
- settings/investors: member redirect
- workspace-actions + logo-actions: restricted to owner only
- Workspace form: canEdit = owner only (admin sees read-only view)

src/app/(dashboard)/properties/page.tsx

@@ -3,14 +3,28 @@ export const dynamic = "force-dynamic";
 import { requireTenant } from "@/lib/appwrite/tenant-guard";
 import { listProperties } from "@/lib/appwrite/property-queries";
 import { PropertiesClient } from "@/components/properties/properties-client";
+import { checkLimit, PLAN_LIMITS } from "@/lib/plans";
 
 export default async function PropertiesPage() {
   const ctx = await requireTenant();
-  const properties = await listProperties(ctx.tenantId);
+  const [properties, limitResult] = await Promise.all([
+    listProperties(ctx.tenantId),
+    checkLimit(ctx.tenantId, ctx.settings?.plan, "properties"),
+  ]);
+
+  const plan = ctx.settings?.plan ?? "free";
+  const limit = PLAN_LIMITS[plan].properties;
+
+  const imgLimit = PLAN_LIMITS[plan].propertyImages;
 
   return (
     <div className="flex flex-1 flex-col gap-4 p-4 md:p-6 overflow-hidden">
-      <PropertiesClient initialProperties={properties} />
+      <PropertiesClient
+        initialProperties={properties}
+        isOwner={ctx.role === "owner"}
+        usageLimit={limit !== Infinity ? { current: limitResult.current, limit } : undefined}
+        maxImagesPerProperty={imgLimit !== Infinity ? imgLimit : undefined}
+      />
     </div>
   );
 }