feat: Revert homepage changes, fix Persian slug 404, and make various article and about us adjustments

- Removed the newly added city-focused section from the homepage.
- Fixed 404 error for Persian slugs in specialties and blog pages by implementing a decode helper.
- Removed the "مخصوص شهر" label from article headers.
- Linked article tags to their respective filter pages.
- Adjusted related content images to prevent distortion.
- Added a section in the "About Us" page for physician registration guidance.
- Updated the logo in the "About Us" header to the correct version.
- Added tests for the new functionality and ensured existing tests are updated accordingly.

components/blog/relatedContent/relatedItem.test.js

@@ -0,0 +1,26 @@
+import { describe, expect, it } from "vitest";
+import { render, screen } from "@testing-library/react";
+import Item from "@/components/blog/relatedContent/Item";
+
+const DATA = {
+  uuid: "8f1c0f2e-0000-4000-8000-000000000001",
+  title: "تیتری که بسیار بلند است و باید ستون متن را پر کند بدون آنکه عکس را باریک کند",
+  created: 1750000000,
+};
+
+describe("آیتم مطالب مرتبط", () => {
+  it("ظرف عکس در فلکس فشرده نمی‌شود", () => {
+    render(<Item data={DATA} idx={0} loading={false} />);
+
+    const image = screen.getByRole("img", { name: DATA.title });
+
+    // jsdom چیدمان را اندازه نمی‌گیرد؛ آنچه قابل تست است همین قرارداد کلاس است.
+    expect(image.closest("a")).toHaveClass("shrink-0");
+  });
+
+  it("ستون متن اجازهٔ کوچک شدن دارد تا سرریز نکند", () => {
+    const { container } = render(<Item data={DATA} idx={0} loading={false} />);
+
+    expect(container.querySelector("li > div")).toHaveClass("min-w-0");
+  });
+});