Add failing repro for Gitea source links on a split SSH/web host (#4641)

packages/app/src/git/forge-url.repro-4641.test.ts

@@ -0,0 +1,21 @@
+import { describe, expect, it } from "vitest";
+import { buildForgeBlobUrl, buildForgeBranchTreeUrl } from "./forge-url";
+
+// Repro for https://github.com/getpaseo/paseo/issues/4641: a Gitea instance whose
+// SSH host (git.example.com) differs from the web URL configured in the tea
+// login (https://projects.example.com). The source links must use the web host.
+describe("#4641 Gitea source links with a split SSH/web host", () => {
+  const remoteUrl = "ssh://git@git.example.com:7998/Acme/main.git";
+
+  it("links the branch tree on the tea login's web host", () => {
+    expect(buildForgeBranchTreeUrl("gitea", { remoteUrl, branch: "main" })).toBe(
+      "https://projects.example.com/Acme/main/src/branch/main",
+    );
+  });
+
+  it("links a file on the tea login's web host", () => {
+    expect(buildForgeBlobUrl("gitea", { remoteUrl, branch: "main", path: "README.md" })).toBe(
+      "https://projects.example.com/Acme/main/src/branch/main/README.md",
+    );
+  });
+});