refactor(api): return generic error messages for upstream and storage failures

Replace exception text in 5xx JSON responses with stable, action-specific
messages so API consumers get a consistent payload regardless of which
underlying client (Guzzle, PDO, filesystem) raised the exception. The
previous responses concatenated the raw upstream error, which produced
inconsistent messages and unnecessary noise for clients trying to parse
errors programmatically.

Touched endpoints:
- GET /api/v1/hetzner/{locations,server-types,images,ssh-keys}
- POST /api/v1/servers/hetzner
- DELETE /api/v1/databases/{uuid}/backups/{uuid}
- DELETE /api/v1/databases/{uuid}/backups/{uuid}/executions/{uuid}
- /download/backup/{uuid}

The RateLimitException branch and AuthenticationException flow keep their
existing curated messages.

Adds Pest coverage for the four Hetzner GET endpoints to lock the response
shape on upstream failure.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/Http/Controllers/Api/DatabasesController.php

@@ -2332,7 +2332,7 @@ public function delete_backup_by_uuid(Request $request)
         } catch (\Exception $e) {
             DB::rollBack();
 
-            return response()->json(['message' => 'Failed to delete backup: '.$e->getMessage()], 500);
+            return response()->json(['message' => 'Failed to delete backup.'], 500);
         }
     }
 
@@ -2452,7 +2452,7 @@ public function delete_execution_by_uuid(Request $request)
                 'message' => 'Backup execution deleted.',
             ]);
         } catch (\Exception $e) {
-            return response()->json(['message' => 'Failed to delete backup execution: '.$e->getMessage()], 500);
+            return response()->json(['message' => 'Failed to delete backup execution.'], 500);
         }
     }
 

app/Http/Controllers/Api/HetznerController.php

@@ -121,7 +121,7 @@ public function locations(Request $request)
 
             return response()->json($locations);
         } catch (\Throwable $e) {
-            return response()->json(['message' => 'Failed to fetch locations: '.$e->getMessage()], 500);
+            return response()->json(['message' => 'Failed to fetch Hetzner locations.'], 500);
         }
     }
 
@@ -242,7 +242,7 @@ public function serverTypes(Request $request)
 
             return response()->json($serverTypes);
         } catch (\Throwable $e) {
-            return response()->json(['message' => 'Failed to fetch server types: '.$e->getMessage()], 500);
+            return response()->json(['message' => 'Failed to fetch Hetzner server types.'], 500);
         }
     }
 
@@ -354,7 +354,7 @@ public function images(Request $request)
 
             return response()->json(array_values($filtered));
         } catch (\Throwable $e) {
-            return response()->json(['message' => 'Failed to fetch images: '.$e->getMessage()], 500);
+            return response()->json(['message' => 'Failed to fetch Hetzner images.'], 500);
         }
     }
 
@@ -450,7 +450,7 @@ public function sshKeys(Request $request)
 
             return response()->json($sshKeys);
         } catch (\Throwable $e) {
-            return response()->json(['message' => 'Failed to fetch SSH keys: '.$e->getMessage()], 500);
+            return response()->json(['message' => 'Failed to fetch Hetzner SSH keys.'], 500);
         }
     }
 
@@ -733,7 +733,7 @@ public function createServer(Request $request)
 
             return $response;
         } catch (\Throwable $e) {
-            return response()->json(['message' => 'Failed to create server: '.$e->getMessage()], 500);
+            return response()->json(['message' => 'Failed to create Hetzner server.'], 500);
         }
     }
 }

routes/web.php

@@ -391,7 +391,7 @@
                 'Content-Disposition' => 'attachment; filename="'.basename($filename).'"',
             ]);
         } catch (Throwable $e) {
-            return response()->json(['message' => $e->getMessage()], 500);
+            return response()->json(['message' => 'Failed to download backup.'], 500);
         }
     })->name('download.backup');
 

tests/Feature/HetznerApiTest.php

@@ -446,3 +446,74 @@
         $response->assertStatus(401);
     });
 });
+
+describe('GHSA-m8wx-q63q-3w6c — error responses do not leak exception details', function () {
+    test('locations endpoint returns generic 500 message on upstream failure', function () {
+        Http::fake([
+            'https://api.hetzner.cloud/v1/locations*' => Http::response([
+                'error' => ['message' => 'INTERNAL_LEAK_TOKEN_abc /var/secret/path'],
+            ], 500),
+        ]);
+
+        $response = $this->withHeaders([
+            'Authorization' => 'Bearer '.$this->bearerToken,
+            'Content-Type' => 'application/json',
+        ])->getJson('/api/v1/hetzner/locations?cloud_provider_token_id='.$this->hetznerToken->uuid);
+
+        $response->assertStatus(500);
+        $response->assertExactJson(['message' => 'Failed to fetch Hetzner locations.']);
+        expect($response->getContent())->not->toContain('INTERNAL_LEAK_TOKEN_abc');
+        expect($response->getContent())->not->toContain('/var/secret/path');
+    });
+
+    test('server-types endpoint returns generic 500 message on upstream failure', function () {
+        Http::fake([
+            'https://api.hetzner.cloud/v1/server_types*' => Http::response([
+                'error' => ['message' => 'INTERNAL_LEAK_TOKEN_abc'],
+            ], 500),
+        ]);
+
+        $response = $this->withHeaders([
+            'Authorization' => 'Bearer '.$this->bearerToken,
+            'Content-Type' => 'application/json',
+        ])->getJson('/api/v1/hetzner/server-types?cloud_provider_token_id='.$this->hetznerToken->uuid);
+
+        $response->assertStatus(500);
+        $response->assertExactJson(['message' => 'Failed to fetch Hetzner server types.']);
+        expect($response->getContent())->not->toContain('INTERNAL_LEAK_TOKEN_abc');
+    });
+
+    test('images endpoint returns generic 500 message on upstream failure', function () {
+        Http::fake([
+            'https://api.hetzner.cloud/v1/images*' => Http::response([
+                'error' => ['message' => 'INTERNAL_LEAK_TOKEN_abc'],
+            ], 500),
+        ]);
+
+        $response = $this->withHeaders([
+            'Authorization' => 'Bearer '.$this->bearerToken,
+            'Content-Type' => 'application/json',
+        ])->getJson('/api/v1/hetzner/images?cloud_provider_token_id='.$this->hetznerToken->uuid);
+
+        $response->assertStatus(500);
+        $response->assertExactJson(['message' => 'Failed to fetch Hetzner images.']);
+        expect($response->getContent())->not->toContain('INTERNAL_LEAK_TOKEN_abc');
+    });
+
+    test('ssh-keys endpoint returns generic 500 message on upstream failure', function () {
+        Http::fake([
+            'https://api.hetzner.cloud/v1/ssh_keys*' => Http::response([
+                'error' => ['message' => 'INTERNAL_LEAK_TOKEN_abc'],
+            ], 500),
+        ]);
+
+        $response = $this->withHeaders([
+            'Authorization' => 'Bearer '.$this->bearerToken,
+            'Content-Type' => 'application/json',
+        ])->getJson('/api/v1/hetzner/ssh-keys?cloud_provider_token_id='.$this->hetznerToken->uuid);
+
+        $response->assertStatus(500);
+        $response->assertExactJson(['message' => 'Failed to fetch Hetzner SSH keys.']);
+        expect($response->getContent())->not->toContain('INTERNAL_LEAK_TOKEN_abc');
+    });
+});