refactor(ios): replace segmented Picker with TabView(.sidebarAdaptable) architecture

CHANGELOG.md

@@ -17,13 +17,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- iOS: TabView with sidebar-adaptable navigation (Tables, Query, History, Settings), per-tab state preservation, iPad sidebar support (requires iOS 18)
 - Native macOS UI patterns: Picker(.menu) for cell editors, native alerts, native List selection, .navigationTitle for sheets, NSSearchField for welcome search, borderless toolbar buttons, chevron indicator on SET picker
 - Quit dialog defaults to Cancel on Return key
 - Connection form delete button moved to far left
 - SSH/SSL browse panels show descriptive message text
 
 ### Fixed
 
+- Crash when scrolling AI Chat during streaming on macOS 15.x
 - Connection failure on PostgreSQL-compatible databases (e.g., Aurora DSQL) that don't support `SET statement_timeout`
 - Schema-qualified table names (e.g. `public.users`) now correctly resolve in autocomplete
 - Alert dialogs use sheet attachment instead of bare modal

TableProMobile/TableProMobile.xcodeproj/project.pbxproj

@@ -1803,7 +1803,7 @@
 				INFOPLIST_FILE = TableProWidget/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = TableProWidget;
 				INFOPLIST_KEY_NSHumanReadableCopyright = "";
-				IPHONEOS_DEPLOYMENT_TARGET = 17.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 18.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -1834,7 +1834,7 @@
 				INFOPLIST_FILE = TableProWidget/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = TableProWidget;
 				INFOPLIST_KEY_NSHumanReadableCopyright = "";
-				IPHONEOS_DEPLOYMENT_TARGET = 17.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 18.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -1906,7 +1906,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 17.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 18.0;
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
@@ -1964,7 +1964,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 17.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 18.0;
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;

TableProMobile/TableProMobile/AppState.swift

@@ -16,6 +16,7 @@ final class AppState {
     var groups: [ConnectionGroup] = []
     var tags: [ConnectionTag] = []
     var pendingConnectionId: UUID?
+    var pendingTableName: String?
     let connectionManager: ConnectionManager
     let syncCoordinator = IOSSyncCoordinator()
     let sshProvider: IOSSSHProvider

TableProMobile/TableProMobile/Coordinators/ConnectionCoordinator.swift

@@ -0,0 +1,321 @@
+//
+//  ConnectionCoordinator.swift
+//  TableProMobile
+//
+
+import os
+import Foundation
+import Observation
+import SwiftUI
+import TableProDatabase
+import TableProModels
+
+@MainActor @Observable
+final class ConnectionCoordinator {
+    let connection: DatabaseConnection
+
+    private(set) var session: ConnectionSession?
+    private(set) var phase: ConnectionPhase = .connecting
+    private(set) var tables: [TableInfo] = []
+    private(set) var databases: [String] = []
+    private(set) var schemas: [String] = []
+    private(set) var activeDatabase: String = ""
+    private(set) var activeSchema: String = "public"
+
+    private(set) var isSwitching = false
+    private(set) var isReconnecting = false
+    var failureAlertMessage: String?
+    var showFailureAlert = false
+
+    var selectedTab: ConnectedTab = .tables {
+        didSet {
+            UserDefaults.standard.set(selectedTab.rawValue, forKey: "lastTab.\(connection.id.uuidString)")
+        }
+    }
+    var pendingQuery: String?
+    var tablesPath = NavigationPath()
+
+    private(set) var queryHistory: [QueryHistoryItem] = []
+    private let historyStorage = QueryHistoryStorage()
+
+    private let appState: AppState
+    private static let logger = Logger(subsystem: "com.TablePro", category: "ConnectionCoordinator")
+
+    enum ConnectionPhase: Sendable {
+        case connecting
+        case connected
+        case error(AppError)
+    }
+
+    var displayName: String {
+        connection.name.isEmpty ? connection.host : connection.name
+    }
+
+    var supportsDatabaseSwitching: Bool {
+        connection.type == .mysql || connection.type == .mariadb ||
+        connection.type == .postgresql || connection.type == .redshift
+    }
+
+    var supportsSchemas: Bool {
+        connection.type == .postgresql || connection.type == .redshift
+    }
+
+    init(connection: DatabaseConnection, appState: AppState) {
+        self.connection = connection
+        self.appState = appState
+    }
+
+    // MARK: - Persisted State
+
+    func restorePersistedState() {
+        let key = connection.id.uuidString
+        if let savedTab = UserDefaults.standard.string(forKey: "lastTab.\(key)"),
+           let tab = ConnectedTab(rawValue: savedTab) {
+            selectedTab = tab
+        }
+        activeDatabase = UserDefaults.standard.string(forKey: "lastDB.\(key)") ?? ""
+        activeSchema = UserDefaults.standard.string(forKey: "lastSchema.\(key)") ?? "public"
+    }
+
+    // MARK: - Connection Lifecycle
+
+    private var isConnecting = false
+
+    func connect() async {
+        guard !isConnecting, session == nil else {
+            if session != nil { phase = .connected }
+            return
+        }
+
+        isConnecting = true
+        defer { isConnecting = false }
+        phase = .connecting
+
+        if let existing = appState.connectionManager.session(for: connection.id) {
+            self.session = existing
+            do {
+                self.tables = try await existing.driver.fetchTables(schema: nil)
+                phase = .connected
+                await loadDatabases()
+                await loadSchemas()
+            } catch {
+                self.session = nil
+                await appState.connectionManager.disconnect(connection.id)
+                await connectFresh()
+            }
+            return
+        }
+
+        await connectFresh()
+    }
+
+    private func connectFresh() async {
+        await appState.sshProvider.setPendingConnectionId(connection.id)
+
+        do {
+            let newSession = try await appState.connectionManager.connect(connection)
+            self.session = newSession
+            self.tables = try await newSession.driver.fetchTables(schema: nil)
+            phase = .connected
+            await loadDatabases()
+            await loadSchemas()
+            navigateToPendingTable()
+        } catch {
+            let context = ErrorContext(
+                operation: "connect",
+                databaseType: connection.type,
+                host: connection.host,
+                sshEnabled: connection.sshEnabled
+            )
+            phase = .error(ErrorClassifier.classify(error, context: context))
+        }
+    }
+
+    func reconnectIfNeeded() async {
+        guard let session, !isSwitching, !isReconnecting else { return }
+        isReconnecting = true
+        defer { isReconnecting = false }
+        do {
+            _ = try await session.driver.ping()
+        } catch {
+            do {
+                await appState.sshProvider.setPendingConnectionId(connection.id)
+                let newSession = try await appState.connectionManager.connect(connection)
+                self.session = newSession
+            } catch {
+                let context = ErrorContext(
+                    operation: "reconnect",
+                    databaseType: connection.type,
+                    host: connection.host,
+                    sshEnabled: connection.sshEnabled
+                )
+                phase = .error(ErrorClassifier.classify(error, context: context))
+                self.session = nil
+            }
+        }
+    }
+
+    // MARK: - Database / Schema Switching
+
+    func switchDatabase(to name: String) async {
+        guard let session, name != activeDatabase, !isSwitching else { return }
+        isSwitching = true
+        defer { isSwitching = false }
+
+        if connection.type == .postgresql || connection.type == .redshift {
+            await reconnectWithDatabase(name)
+        } else {
+            do {
+                try await appState.connectionManager.switchDatabase(connection.id, to: name)
+                if let freshSession = appState.connectionManager.session(for: connection.id) {
+                    self.session = freshSession
+                }
+                activeDatabase = name
+                UserDefaults.standard.set(name, forKey: "lastDB.\(connection.id.uuidString)")
+                if let current = self.session {
+                    self.tables = try await current.driver.fetchTables(schema: nil)
+                }
+            } catch {
+                failureAlertMessage = String(localized: "Failed to switch database")
+                showFailureAlert = true
+            }
+        }
+    }
+
+    private func reconnectWithDatabase(_ database: String) async {
+        await appState.connectionManager.disconnect(connection.id)
+        self.session = nil
+
+        var newConnection = connection
+        newConnection.database = database
+
+        await appState.sshProvider.setPendingConnectionId(connection.id)
+
+        do {
+            let newSession = try await appState.connectionManager.connect(newConnection)
+            self.session = newSession
+            self.tables = try await newSession.driver.fetchTables(schema: nil)
+            activeDatabase = database
+            UserDefaults.standard.set(database, forKey: "lastDB.\(connection.id.uuidString)")
+            await loadSchemas()
+        } catch {
+            Self.logger.error("Failed to switch to database \(database, privacy: .public): \(error.localizedDescription, privacy: .public)")
+            await appState.sshProvider.setPendingConnectionId(connection.id)
+            do {
+                let fallbackSession = try await appState.connectionManager.connect(connection)
+                self.session = fallbackSession
+                self.tables = try await fallbackSession.driver.fetchTables(schema: nil)
+                failureAlertMessage = String(localized: "Failed to switch database")
+                showFailureAlert = true
+            } catch {
+                let context = ErrorContext(
+                    operation: "switchDatabase",
+                    databaseType: connection.type,
+                    host: connection.host,
+                    sshEnabled: connection.sshEnabled
+                )
+                phase = .error(ErrorClassifier.classify(error, context: context))
+                self.session = nil
+            }
+        }
+    }
+
+    func switchSchema(to name: String) async {
+        guard let session, name != activeSchema, !isSwitching else { return }
+        isSwitching = true
+        defer { isSwitching = false }
+
+        do {
+            try await session.driver.switchSchema(to: name)
+            activeSchema = name
+            UserDefaults.standard.set(name, forKey: "lastSchema.\(connection.id.uuidString)")
+            self.tables = try await session.driver.fetchTables(schema: name)
+        } catch {
+            failureAlertMessage = String(localized: "Failed to switch schema")
+            showFailureAlert = true
+        }
+    }
+
+    // MARK: - Tables
+
+    func refreshTables() async {
+        guard let session else { return }
+        do {
+            let schema = supportsSchemas ? activeSchema : nil
+            self.tables = try await session.driver.fetchTables(schema: schema)
+        } catch {
+            Self.logger.warning("Failed to refresh tables: \(error.localizedDescription, privacy: .public)")
+            failureAlertMessage = String(localized: "Failed to refresh tables")
+            showFailureAlert = true
+        }
+    }
+
+    // MARK: - Query History
+
+    func loadHistory() {
+        queryHistory = historyStorage.load(for: connection.id)
+    }
+
+    func addHistoryItem(_ item: QueryHistoryItem) {
+        historyStorage.save(item)
+        queryHistory.append(item)
+    }
+
+    func deleteHistoryItem(_ id: UUID) {
+        historyStorage.delete(id)
+        queryHistory.removeAll { $0.id == id }
+    }
+
+    func clearHistory() {
+        historyStorage.clearAll(for: connection.id)
+        queryHistory = []
+    }
+
+    func navigateToPendingTable() {
+        guard let tableName = appState.pendingTableName,
+              let table = tables.first(where: { $0.name == tableName }) else { return }
+        appState.pendingTableName = nil
+        selectedTab = .tables
+        tablesPath.append(table)
+    }
+
+    // MARK: - Private Helpers
+
+    private func loadDatabases() async {
+        guard let session, supportsDatabaseSwitching else { return }
+        do {
+            databases = try await session.driver.fetchDatabases()
+            if !activeDatabase.isEmpty, databases.contains(activeDatabase) {
+                let sessionDB = appState.connectionManager.session(for: connection.id)?.activeDatabase ?? connection.database
+                if activeDatabase != sessionDB {
+                    let target = activeDatabase
+                    activeDatabase = sessionDB
+                    await switchDatabase(to: target)
+                }
+            } else if let stored = appState.connectionManager.session(for: connection.id) {
+                activeDatabase = stored.activeDatabase
+            } else {
+                activeDatabase = connection.database
+            }
+        } catch {
+            Self.logger.warning("Failed to load databases: \(error.localizedDescription, privacy: .public)")
+        }
+    }
+
+    private func loadSchemas() async {
+        guard let session, supportsSchemas else { return }
+        do {
+            schemas = try await session.driver.fetchSchemas()
+            let currentSchema = session.driver.currentSchema ?? "public"
+            if schemas.contains(activeSchema), activeSchema != currentSchema {
+                let target = activeSchema
+                activeSchema = currentSchema
+                await switchSchema(to: target)
+            } else if !schemas.contains(activeSchema) {
+                activeSchema = currentSchema
+            }
+        } catch {
+            Self.logger.warning("Failed to load schemas: \(error.localizedDescription, privacy: .public)")
+        }
+    }
+}

TableProMobile/TableProMobile/Models/ConnectedTab.swift

@@ -0,0 +1,11 @@
+//
+//  ConnectedTab.swift
+//  TableProMobile
+//
+
+internal enum ConnectedTab: String, CaseIterable {
+    case tables
+    case query
+    case history
+    case settings
+}