feat: redesign page heroes, implement organic markers, and streamline contact flow

- Refined hero sections for About, Blog, Websites, and Case Studies for a bespoke industrial entry point.
- Redesigned Marker component using layered SVG paths for an organic, hand-drawn highlighter effect.
- Restored technical precision in ArchitectureVisualizer with refined line thickness.
- Streamlined contact page by removing generic headers and prioritizing the configurator/gateway.
- Updated technical references to reflect self-hosted Gitea infrastructure.
- Cleaned up unused imports and addressed linting warnings across modified pages.

apps/web/src/actions/contact.ts

@@ -0,0 +1,48 @@
+"use server";
+
+import { sendEmail } from "../lib/mail/mailer";
+import {
+  getInquiryEmailHtml,
+  getConfirmationEmailHtml,
+} from "../components/ContactForm/EmailTemplates";
+
+export async function sendContactInquiry(data: {
+  name: string;
+  email: string;
+  companyName: string;
+  projectType: string;
+  message: string;
+  isFreeText: boolean;
+  config?: any;
+}) {
+  try {
+    // 1. Send Inquiry to Marc
+    const inquiryResult = await sendEmail({
+      subject: `[PROJEKT] ${data.isFreeText ? "DIREKTANFRAGE" : "KONFIGURATION"}: ${data.companyName || data.name}`,
+      html: getInquiryEmailHtml(data),
+      replyTo: data.email,
+    });
+
+    if (!inquiryResult.success) {
+      throw new Error(inquiryResult.error);
+    }
+
+    // 2. Send Confirmation to Customer
+    await sendEmail({
+      to: data.email,
+      subject: `Kopie deiner Anfrage: ${data.companyName || "mintel.me"}`,
+      html: getConfirmationEmailHtml(data),
+    });
+
+    return { success: true };
+  } catch (error) {
+    console.error("Server Action Error:", error);
+    return {
+      success: false,
+      error:
+        error instanceof Error
+          ? error.message
+          : "Unknown error during submission",
+    };
+  }
+}