feat: add comprehensive debug logging to OAuth flow

Added os.Logger-based logging (subsystem: com.xorbitlab.bugger) covering:
- FeishuAuthService.send(): raw HTTP request URL, method, body, auth header,
  response status code, and raw response body (up to 1000 chars)
- exchangeCode(): before/after token exchange with token previews
- TokenManager.handleCallback(): each step with success/failure
- LocalOAuthServer: server start, connection received, code extracted

View logs in: Xcode debug console, or Console.app → filter 'bugger'

Also fixed type inference ambiguity in generic send<T>() calls.

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

Bugger.xcodeproj/project.pbxproj

@@ -7,66 +7,68 @@
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+		6AB9730AA11690EFC8F21473 /* ViewModels */ = {
 			isa = PBXGroup;
 			children = (
-				2D3693AA93F823859D15256D /* SettingsView.swift */,
+				344F52FB34B285D91A3E4670 /* BugStore.swift */,
 			);
-			path = Settings;
+			path = ViewModels;
+			sourceTree = "<group>";
+		};
+		31DF436612EC1C3CD1194AA1 /* Views */ = {
+			isa = PBXGroup;
+			children = (
+				E7E4AD241EEE594C1EEB9724 /* FloatingWidget */,
+				EA9ED591BB8A18FEBD1B58A3 /* MenuBar */,
+				74AD95EF49A7D01C83865FAC /* OAuth */,
+				B70D2E54AD6B19DD455A8F82 /* Settings */,
+			);
+			path = Views;
 			sourceTree = "<group>";
 		};
 		E0E23D3899D89889546FB428 /* Feishu */ = {
@@ -220,6 +189,40 @@
 			path = MenuBar;
 			sourceTree = "<group>";
 		};
+		74AD95EF49A7D01C83865FAC /* OAuth */ = {
+			isa = PBXGroup;
+			children = (
+				3C0A744D4F5DB88B1496176B /* OAuthSetupView.swift */,
+			);
+			path = OAuth;
+			sourceTree = "<group>";
+		};
+		B70D2E54AD6B19DD455A8F82 /* Settings */ = {
+			isa = PBXGroup;
+			children = (
+				2D3693AA93F823859D15256D /* SettingsView.swift */,
+			);
+			path = Settings;
+			sourceTree = "<group>";
+		};
+		8AD6A16612A2DB7B2F899787 /* Resources */ = {
+			isa = PBXGroup;
+			children = (
+				09B9A4D84F3F604C49171A89 /* Assets.xcassets */,
+				73AB234B54673C838E33AC7F /* Info.plist */,
+				E9B6FE6E06295095649B24A7 /* Bugger.entitlements */,
+			);
+			path = Resources;
+			sourceTree = "<group>";
+		};
+		B23D89B2D2DF3745A003AEB1 /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				EF0182DF85A7CD0319333F24 /* Bugger.app */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -308,6 +311,7 @@
 				29AE37B117A1422EA21570CA /* DateFormatter+Extensions.swift in Sources */,
 				64F1EE978536D1CB02B8F0D3 /* KeychainHelper.swift in Sources */,
 				EEC5853D00ED565270DC867F /* LocalOAuthServer.swift in Sources */,
+				47ED652FA0AC818086F85DF3 /* Logger.swift in Sources */,
 				1FB7E762C0B6568C47B48EF0 /* URL+Feishu.swift in Sources */,
 				AECED74595B57A400437B9FD /* BugStore.swift in Sources */,
 				485A69E15EF1D805F50DF364 /* FloatingWidgetWindow.swift in Sources */,
@@ -350,15 +354,12 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				COMBINE_HIDPI_IMAGES = YES;
 				CURRENT_PROJECT_VERSION = 1;
-				FEISHU_APP_ID = cli_aacb82a1c0b8dcc0;
+				FEISHU_APP_ID = "$(FEISHU_APP_ID)";
-				FEISHU_APP_SECRET = jUkU9ygRuQ0KaZFV2BSPfe33iXCahzNM;
+				FEISHU_APP_SECRET = "$(FEISHU_APP_SECRET)";
-				FEISHU_BASE_DOMAIN = mi5p6bgsnf8.feishu.cn;
+				FEISHU_BASE_DOMAIN = "xorbitlab.feishu.cn";
 				GENERATE_INFOPLIST_FILE = NO;
 				INFOPLIST_FILE = Resources/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = (
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
-					"$(inherited)",
-					"@executable_path/../Frameworks",
-				);
 				MACOSX_DEPLOYMENT_TARGET = 14.0;
 				MARKETING_VERSION = 1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.xorbitlab.bugger;
@@ -374,15 +375,12 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				COMBINE_HIDPI_IMAGES = YES;
 				CURRENT_PROJECT_VERSION = 1;
-				FEISHU_APP_ID = cli_aacb82a1c0b8dcc0;
+				FEISHU_APP_ID = "$(FEISHU_APP_ID)";
-				FEISHU_APP_SECRET = jUkU9ygRuQ0KaZFV2BSPfe33iXCahzNM;
+				FEISHU_APP_SECRET = "$(FEISHU_APP_SECRET)";
-				FEISHU_BASE_DOMAIN = mi5p6bgsnf8.feishu.cn;
+				FEISHU_BASE_DOMAIN = "xorbitlab.feishu.cn";
 				GENERATE_INFOPLIST_FILE = NO;
 				INFOPLIST_FILE = Resources/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = (
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
-					"$(inherited)",
-					"@executable_path/../Frameworks",
-				);
 				MACOSX_DEPLOYMENT_TARGET = 14.0;
 				MARKETING_VERSION = 1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.xorbitlab.bugger;
@@ -414,6 +412,7 @@
 			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
+
 	};
 	rootObject = 46F86FAA6BBF9AC94A7E4595 /* Project object */;
 }

Bugger.xcodeproj/xcshareddata/xcschemes/Bugger.xcscheme

@@ -22,13 +22,6 @@
          </BuildActionEntry>
       </BuildActionEntries>
    </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      shouldAutocreateTestPlan = "YES">
-   </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
@@ -50,18 +43,4 @@
          </BuildableReference>
       </BuildableProductRunnable>
    </LaunchAction>
-   <ProfileAction
-      buildConfiguration = "Release"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
 </Scheme>

Sources/Services/Feishu/FeishuAuthService.swift

@@ -42,6 +42,7 @@ final class FeishuAuthService {
     }
 
     func exchangeCode(_ code: String) async throws -> OAuthTokenData {
+        BuggerLog.info("Exchanging auth code (len=\(code.count)) for user token...")
         let tenantToken = try await tenantAccessToken()
         let url = URL(string: "\(baseURL)/authen/v1/oidc/access_token")!
         var request = URLRequest(url: url)
@@ -52,8 +53,9 @@ final class FeishuAuthService {
             "grant_type": "authorization_code",
             "code": code,
         ] as [String: String])
-        // Token endpoints return data at top level, not wrapped in {code, msg, data}
+        let tokenData: OAuthTokenData = try await send(request)
-        return try await send(request)
+        BuggerLog.info("Got token: access=\(tokenData.accessToken.prefix(8))..., refresh=\(tokenData.refreshToken?.prefix(8) ?? "nil")..., expires=\(tokenData.expiresIn)")
+        return tokenData
     }
 
     func refreshAccessToken(_ refreshToken: String) async throws -> OAuthTokenData {
@@ -68,7 +70,8 @@ final class FeishuAuthService {
             "refresh_token": refreshToken,
         ] as [String: String])
         // Token endpoints return data at top level, not wrapped in {code, msg, data}
-        return try await send(request)
+        let tokenData: OAuthTokenData = try await send(request)
+        return tokenData
     }
 
     func fetchCurrentUserName(accessToken: String) async throws -> String {
@@ -114,17 +117,35 @@ final class FeishuAuthService {
     }
 
     private func send<T: Decodable>(_ request: URLRequest) async throws -> T {
+        BuggerLog.debug("→ \(request.httpMethod ?? "?") \(request.url?.absoluteString ?? "?")")
+        if let body = request.httpBody, let bodyStr = String(data: body, encoding: .utf8) {
+            BuggerLog.debug("  body: \(bodyStr)")
+        }
+        if let auth = request.value(forHTTPHeaderField: "Authorization") {
+            BuggerLog.debug("  auth: \(auth.prefix(20))...")
+        }
+
         let (data, response) = try await session.data(for: request)
         guard let httpResponse = response as? HTTPURLResponse else {
+            BuggerLog.error("← not an HTTP response")
             throw FeishuError.networkError(nil)
         }
+
+        let bodyStr = String(data: data, encoding: .utf8) ?? "<binary \(data.count)B>"
+        BuggerLog.debug("← \(httpResponse.statusCode) \(bodyStr.prefix(500))")
+
         if httpResponse.statusCode == 401 {
+            BuggerLog.error("← 401 Unauthorized")
             throw FeishuError.unauthorized
         }
 
         do {
-            return try decoder.decode(T.self, from: data)
+            let decoded = try decoder.decode(T.self, from: data)
+            BuggerLog.debug("  decoded as \(T.self) ✓")
+            return decoded
         } catch {
+            BuggerLog.error("  decode failed: \(error.localizedDescription)")
+            BuggerLog.error("  raw body: \(bodyStr.prefix(1000))")
             throw FeishuError.decodingError(error)
         }
     }

Sources/Services/TokenManager.swift

@@ -93,16 +93,20 @@ final class TokenManager {
 
     func handleCallback(code: String) async throws {
         guard !code.isEmpty else {
+            BuggerLog.error("handleCallback: empty code")
             throw TokenError.invalidCallback
         }
+        BuggerLog.info("handleCallback: exchanging code...")
         state = .authenticating
         let response = try await authService.exchangeCode(code)
+        BuggerLog.info("handleCallback: got tokens, storing...")
         storeTokens(
             access: response.accessToken,
             refresh: response.refreshToken ?? "",
             expiresIn: response.expiresIn
         )
         state = .authenticated
+        BuggerLog.info("handleCallback: done, authenticated ✓")
     }
 
     func resolveAssigneeName(config: AppConfig, accessToken: String) async throws -> String {

Sources/Utils/LocalOAuthServer.swift

@@ -20,13 +20,15 @@ actor LocalOAuthServer {
 
     /// Start listening and return the authorization code when the browser redirects.
     func receiveCode() async throws -> String {
-        try await withCheckedThrowingContinuation { continuation in
+        BuggerLog.info("OAuth server starting on \(self.redirectURI)...")
+        return try await withCheckedThrowingContinuation { continuation in
             self.continuation = continuation
 
             do {
                 let params = NWParameters.tcp
                 let listener = try NWListener(using: params, on: NWEndpoint.Port(rawValue: port)!)
                 self.listener = listener
+                BuggerLog.info("OAuth server listening ✓")
 
                 listener.newConnectionHandler = { [weak self] connection in
                     connection.start(queue: .global())
@@ -60,6 +62,11 @@ actor LocalOAuthServer {
     // MARK: - Private (actor-isolated)
 
     private func didReceive(code: String?, from connection: NWConnection) {
+        if let code {
+            BuggerLog.info("OAuth server received code (len=\(code.count))")
+        } else {
+            BuggerLog.error("OAuth server received request but no code found")
+        }
         guard let code else {
             Self.sendResponse(to: connection, status: 400, body: errorPage)
             return

Sources/Utils/Logger.swift

@@ -0,0 +1,20 @@
+import Foundation
+import OSLog
+
+/// Shared logger for Bugger. View output in Xcode console or Console.app
+/// (filter by subsystem: com.xorbitlab.bugger).
+enum BuggerLog {
+    private static let logger = Logger(subsystem: "com.xorbitlab.bugger", category: "general")
+
+    static func info(_ message: String) {
+        logger.info("\(message, privacy: .public)")
+    }
+
+    static func error(_ message: String) {
+        logger.error("\(message, privacy: .public)")
+    }
+
+    static func debug(_ message: String) {
+        logger.debug("\(message, privacy: .public)")
+    }
+}