fix(faza-e): refresh dedup, fetch timeout, error surfacing

4 fixes for the symptoms Marius hit on Faza E pilot — search returning
"Eroare la căutare" after sessions got stale, even after relogin:

1. Refresh deduplication
   Authentik rotates refresh_tokens — exchange-once. Parallel map +
   search + parcela.get all hit jwt callback concurrently, each fires
   its own refresh, the first wins, the rest get invalid_grant and
   poison the JWT with token.error=RefreshAccessTokenError → user
   appears logged out for no good reason. Cache the inflight refresh
   promise in-memory keyed by refresh_token so concurrent callers
   share one Authentik exchange.

2. Fetch timeout in gis-api-client
   AbortSignal.timeout(30s) on every api.gis.ac call. Without it, a
   slow upstream (ANCPI scrape, orchestrator hiccup) hangs the route
   for the full Next.js default → Marius saw 10s gaps with no
   feedback. Throws GisApiError(504, upstream_timeout) instead.

3. Better error surfacing
   /api/gis/* routes return { error, hint: <first 200 chars> } on
   non-GisApiError throws instead of a bare "internal_error". Easier
   to triage from browser DevTools without paging through container
   logs.

4. Remove diagnostic [gis-search] logs
   Diagnostic served its purpose (identified the stale-token cause
   pre-refresh-fix). Now noise; keep only [auth] refresh success/fail
   + per-route internal_error.

Also adds AbortSignal.timeout(8s) on the Authentik refresh fetch
itself to keep the jwt callback bounded.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/api/gis/parcel/tech/route.ts

@@ -26,8 +26,7 @@ export async function POST(request: Request) {
   }
 
   try {
-    const data = await gisApi.parcel.tech(body);
-    return NextResponse.json(data);
+    return NextResponse.json(await gisApi.parcel.tech(body));
   } catch (err) {
     if (err instanceof GisApiError) {
       return NextResponse.json(
@@ -35,6 +34,11 @@ export async function POST(request: Request) {
         { status: err.status },
       );
     }
-    return NextResponse.json({ error: "internal_error" }, { status: 500 });
+    const msg = err instanceof Error ? err.message : String(err);
+    console.error("[gis-parcel-tech] internal error:", msg);
+    return NextResponse.json(
+      { error: "internal_error", hint: msg.slice(0, 200) },
+      { status: 500 },
+    );
   }
 }

src/app/api/gis/parcela/[id]/route.ts

@@ -20,8 +20,7 @@ export async function GET(
   }
 
   try {
-    const data = await gisApi.parcela.get(id);
-    return NextResponse.json(data);
+    return NextResponse.json(await gisApi.parcela.get(id));
   } catch (err) {
     if (err instanceof GisApiError) {
       return NextResponse.json(
@@ -29,6 +28,11 @@ export async function GET(
         { status: err.status },
       );
     }
-    return NextResponse.json({ error: "internal_error" }, { status: 500 });
+    const msg = err instanceof Error ? err.message : String(err);
+    console.error("[gis-parcela] internal error:", msg);
+    return NextResponse.json(
+      { error: "internal_error", hint: msg.slice(0, 200) },
+      { status: 500 },
+    );
   }
 }

src/app/api/gis/search/route.ts

@@ -7,17 +7,6 @@ export const dynamic = "force-dynamic";
 
 export async function GET(request: Request) {
   const session = await getAuthSession();
-  const hasSession = !!session;
-  const sessionUserEmail = session?.user?.email ?? null;
-  const hasAccessToken = !!(session as { accessToken?: string } | null)
-    ?.accessToken;
-  console.log(
-    "[gis-search] hasSession=%s email=%s hasAccessToken=%s",
-    hasSession,
-    sessionUserEmail,
-    hasAccessToken,
-  );
-
   if (!session) {
     return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
   }
@@ -32,18 +21,19 @@ export async function GET(request: Request) {
   }
 
   try {
-    const data = await gisApi.search(q, limit);
-    console.log("[gis-search] OK q=%s uats=%d features=%d", q, data.uats?.length ?? 0, data.features?.length ?? 0);
-    return NextResponse.json(data);
+    return NextResponse.json(await gisApi.search(q, limit));
   } catch (err) {
     if (err instanceof GisApiError) {
-      console.error("[gis-search] gis-api error code=%s status=%d body=%j", err.code, err.status, err.body);
       return NextResponse.json(
         { error: err.code, status: err.status },
         { status: err.status },
       );
     }
-    console.error("[gis-search] internal error:", err);
-    return NextResponse.json({ error: "internal_error" }, { status: 500 });
+    const msg = err instanceof Error ? err.message : String(err);
+    console.error("[gis-search] internal error:", msg);
+    return NextResponse.json(
+      { error: "internal_error", hint: msg.slice(0, 200) },
+      { status: 500 },
+    );
   }
 }

src/core/auth/auth-options.ts

@@ -12,13 +12,35 @@ import { useGisAcFlag } from "@/core/feature-flags/use-gis-ac";
  *
  * Marks the JWT with token.error="RefreshAccessTokenError" on failure;
  * the client can react by forcing a re-login.
+ *
+ * **Concurrency:** Authentik rotates refresh_tokens — a refresh_token can
+ * only be exchanged once. With parallel requests (typical for a map app —
+ * map tiles + parcela.get + search all firing at once), each request
+ * triggers its own jwt callback, each calls refresh, only the first wins
+ * and the rest get `invalid_grant` → user is logged out for no good
+ * reason. We dedupe in-memory by refresh_token key so concurrent callers
+ * share a single Authentik request.
  */
+const inflightRefreshes = new Map<string, Promise<JWT>>();
+
 async function refreshAuthentikToken(token: JWT): Promise<JWT> {
+  const refreshToken = token.refreshToken ? String(token.refreshToken) : "";
+  if (!refreshToken) {
+    return { ...token, error: "RefreshAccessTokenError" };
+  }
+
+  // Dedupe concurrent refreshes for the same refresh_token.
+  const existing = inflightRefreshes.get(refreshToken);
+  if (existing) {
+    return existing.then((fresh) => ({ ...token, ...fresh }));
+  }
+
+  const promise = (async (): Promise<JWT> => {
     try {
       const issuer = process.env.AUTHENTIK_ISSUER;
       const clientId = process.env.AUTHENTIK_CLIENT_ID;
       const clientSecret = process.env.AUTHENTIK_CLIENT_SECRET;
-    if (!issuer || !clientId || !clientSecret || !token.refreshToken) {
+      if (!issuer || !clientId || !clientSecret) {
         throw new Error("refresh_prerequisites_missing");
       }
       const url = `${issuer.replace(/\/$/, "")}/token/`;
@@ -27,11 +49,12 @@ async function refreshAuthentikToken(token: JWT): Promise<JWT> {
         headers: { "Content-Type": "application/x-www-form-urlencoded" },
         body: new URLSearchParams({
           grant_type: "refresh_token",
-        refresh_token: String(token.refreshToken),
+          refresh_token: refreshToken,
           client_id: clientId,
           client_secret: clientSecret,
         }),
         cache: "no-store",
+        signal: AbortSignal.timeout(8_000),
       });
       const body = (await res.json()) as {
         access_token?: string;
@@ -43,17 +66,25 @@ async function refreshAuthentikToken(token: JWT): Promise<JWT> {
         console.warn("[auth] refresh failed:", res.status, body.error);
         return { ...token, error: "RefreshAccessTokenError" };
       }
+      console.log("[auth] refresh OK expires_in=%d", body.expires_in ?? 300);
       return {
         ...token,
         accessToken: body.access_token,
         accessTokenExpires: Date.now() + (body.expires_in ?? 300) * 1000,
-      refreshToken: body.refresh_token ?? token.refreshToken,
+        refreshToken: body.refresh_token ?? refreshToken,
         error: undefined,
       };
     } catch (err) {
-    console.warn("[auth] refresh error:", err);
+      const msg = err instanceof Error ? err.message : String(err);
+      console.warn("[auth] refresh error:", msg);
       return { ...token, error: "RefreshAccessTokenError" };
+    } finally {
+      inflightRefreshes.delete(refreshToken);
     }
+  })();
+
+  inflightRefreshes.set(refreshToken, promise);
+  return promise;
 }
 
 export const authOptions: NextAuthOptions = {

src/lib/gis-api-client.ts

@@ -143,9 +143,15 @@ function parseRateLimit(res: Response): RateLimit | undefined {
   };
 }
 
+// Default per-request timeout. Light queries (search, parcela.get) usually
+// finish in <1s; proxy calls (parcel/tech) hit ANCPI live and can take 5-15s.
+const DEFAULT_TIMEOUT_MS = 30_000;
+
 async function request<T = unknown>(path: string, opts: RequestOpts = {}): Promise<T> {
   const token = opts.accessToken || (await bearerFromSession());
-  const res = await fetch(buildUrl(path, opts.query), {
+  let res: Response;
+  try {
+    res = await fetch(buildUrl(path, opts.query), {
       method: opts.method || "GET",
       body: opts.body ?? null,
       headers: {
@@ -154,7 +160,17 @@ async function request<T = unknown>(path: string, opts: RequestOpts = {}): Promi
         ...opts.headers,
       },
       cache: "no-store",
+      signal: AbortSignal.timeout(DEFAULT_TIMEOUT_MS),
     });
+  } catch (err) {
+    const isAbort = (err as { name?: string })?.name === "TimeoutError" ||
+      (err as { name?: string })?.name === "AbortError";
+    throw new GisApiError(
+      504,
+      isAbort ? "upstream_timeout" : "upstream_unreachable",
+      { hint: (err as Error)?.message },
+    );
+  }
 
   const rateLimit = parseRateLimit(res);
 
@@ -178,7 +194,9 @@ async function request<T = unknown>(path: string, opts: RequestOpts = {}): Promi
 
 async function rawResponse(path: string, opts: RequestOpts = {}): Promise<Response> {
   const token = opts.accessToken || (await bearerFromSession());
-  const res = await fetch(buildUrl(path, opts.query), {
+  let res: Response;
+  try {
+    res = await fetch(buildUrl(path, opts.query), {
       method: opts.method || "GET",
       body: opts.body ?? null,
       headers: {
@@ -186,7 +204,17 @@ async function rawResponse(path: string, opts: RequestOpts = {}): Promise<Respon
         ...opts.headers,
       },
       cache: "no-store",
+      signal: AbortSignal.timeout(DEFAULT_TIMEOUT_MS),
     });
+  } catch (err) {
+    const isAbort = (err as { name?: string })?.name === "TimeoutError" ||
+      (err as { name?: string })?.name === "AbortError";
+    throw new GisApiError(
+      504,
+      isAbort ? "upstream_timeout" : "upstream_unreachable",
+      { hint: (err as Error)?.message },
+    );
+  }
   if (!res.ok) {
     let body: unknown = null;
     try {