feat: add GitLab Duo and CodeBuddy support, update observability settings

src/app/api/oauth/gitlab/pat/route.js

@@ -0,0 +1,62 @@
+import { NextResponse } from "next/server";
+import { createProviderConnection } from "@/models";
+
+const GITLAB_DEFAULT_BASE = "https://gitlab.com";
+
+/**
+ * POST /api/oauth/gitlab/pat
+ * Authenticate GitLab Duo with a Personal Access Token (PAT)
+ */
+export async function POST(request) {
+  try {
+    let body;
+    try {
+      body = await request.json();
+    } catch {
+      return NextResponse.json({ error: "Invalid request body" }, { status: 400 });
+    }
+
+    const { token, baseUrl } = body;
+    if (!token?.trim()) {
+      return NextResponse.json({ error: "Personal Access Token is required" }, { status: 400 });
+    }
+
+    const base = (baseUrl?.trim() || GITLAB_DEFAULT_BASE).replace(/\/$/, "");
+
+    // Verify token by fetching current user
+    const userRes = await fetch(`${base}/api/v4/user`, {
+      headers: { "Private-Token": token.trim(), Accept: "application/json" },
+    });
+
+    if (!userRes.ok) {
+      const err = await userRes.text();
+      return NextResponse.json({ error: `GitLab token verification failed: ${err}` }, { status: 401 });
+    }
+
+    const user = await userRes.json();
+    const email = user.email || user.public_email || "";
+
+    await createProviderConnection({
+      provider: "gitlab",
+      authType: "oauth",
+      accessToken: token.trim(),
+      refreshToken: null,
+      expiresAt: null,
+      email,
+      displayName: user.name || user.username || email,
+      testStatus: "active",
+      providerSpecificData: {
+        username: user.username || "",
+        email,
+        name: user.name || "",
+        baseUrl: base,
+        authKind: "personal_access_token",
+      },
+    });
+
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    console.error("GitLab PAT auth error:", error);
+    return NextResponse.json({ error: error.message }, { status: 500 });
+  }
+}