added typeaheead and introspetion

DBSyn/DatabaseModel.swift

@@ -197,6 +197,21 @@ final class DatabaseModel: ObservableObject {
         let views: [String]
         let columnsByTable: [String: [IntrospectedColumn]]
     }
+    // Resolve USE statements from the editor buffer even before Run is pressed.
+    // The completion provider must not depend on navigator selection alone.
+    var completionDatabase: String {
+        let pattern = #"(?im)^\s*USE\s+`?([A-Za-z_][A-Za-z0-9_]*)`?\s*;?"#
+        if let regex = try? NSRegularExpression(pattern: pattern) {
+            let value = sql as NSString
+            let range = NSRange(location: 0, length: value.length)
+            if let match = regex.matches(in: sql, range: range).last,
+               match.numberOfRanges > 1 {
+                return value.substring(with: match.range(at: 1))
+            }
+        }
+        return selectedDatabase.isEmpty ? (selected?.database ?? "") : selectedDatabase
+    }
+
     @Published private(set) var introspections: [String: SchemaIntrospection] = [:]
     private let introspectionStorageKey = "DBSyn.introspection.snapshots.v2"
     private func persistIntrospections() {
@@ -581,6 +596,7 @@ final class DatabaseModel: ObservableObject {
                         selectedDatabase = usedSchema
                         // Metadata is cached in memory for native SQL completion.
                         loadTables(database: usedSchema)
+                        introspect(database: usedSchema)
                     }
                 }
                 if listingDatabases {

DBSyn/MainView.swift

@@ -972,10 +972,11 @@ struct MainView: View {
                 .fill(WB.border)
                 .frame(width: 1)
 
-            SQLTextView(text: $model.sql, selectedSQL: $selectedSQL, focusRequest: sqlFocusRequest, completions: model.schemaColumns[model.selectedDatabase] ?? [],
+            SQLTextView(text: $model.sql, selectedSQL: $selectedSQL, focusRequest: sqlFocusRequest,
-                        tables: model.introspection(for: model.selectedDatabase)?.tables ?? model.schemaTables[model.selectedDatabase] ?? [],
+                        completions: model.schemaColumns[model.completionDatabase] ?? [],
-                        views: model.introspection(for: model.selectedDatabase)?.views ?? model.schemaViews[model.selectedDatabase] ?? [],
+                        tables: model.introspection(for: model.completionDatabase)?.tables ?? model.schemaTables[model.completionDatabase] ?? [],
-                        columnsByTable: model.introspection(for: model.selectedDatabase)?.columnsByTable.mapValues { $0.map(\.name) } ?? [:],
+                        views: model.introspection(for: model.completionDatabase)?.views ?? model.schemaViews[model.completionDatabase] ?? [],
+                        columnsByTable: model.introspection(for: model.completionDatabase)?.columnsByTable.mapValues { $0.map(\.name) } ?? [:],
                         databases: model.databases)
         }
             .background(Color(nsColor: .textBackgroundColor))
@@ -1442,7 +1443,6 @@ struct SQLTextView: NSViewRepresentable {
         editor.backgroundColor = .textBackgroundColor
         editor.textColor = .textColor
         scroll.backgroundColor = .textBackgroundColor
-        context.coordinator.highlight(editor)
         if context.coordinator.lastFocusRequest != focusRequest {
             context.coordinator.lastFocusRequest = focusRequest
             DispatchQueue.main.async { [weak editor] in
@@ -1513,7 +1513,7 @@ struct SQLTextView: NSViewRepresentable {
         }
 
         private func showSuggestions(_ editor: NSTextView) {
-            guard editor.window?.firstResponder === editor else { dismissSuggestions(); return }
+            guard editor.window != nil else { dismissSuggestions(); return }
             let selection = editor.selectedRange()
             guard selection.length == 0, selection.location != NSNotFound else { dismissSuggestions(); return }
             let source = editor.string as NSString
@@ -1546,7 +1546,7 @@ struct SQLTextView: NSViewRepresentable {
             guard !suggestionItems.isEmpty else { dismissSuggestions(); return }
             dismissPopoverOnly()
             let popover = NSPopover()
-            popover.behavior = .semitransient
+            popover.behavior = .applicationDefined
             let items = suggestionItems
             let content = NSHostingView(rootView: VStack(alignment: .leading, spacing: 0) {
                 ForEach(Array(items.enumerated()), id: \.offset) { index, item in
@@ -1580,7 +1580,7 @@ struct SQLTextView: NSViewRepresentable {
             if keyMonitor == nil {
                 keyMonitor = NSEvent.addLocalMonitorForEvents(matching: .keyDown) { [weak self, weak editor] event in
                     guard let self, let editor, self.suggestionPopover?.isShown == true,
-                          editor.window?.firstResponder === editor else { return event }
+                          editor.window != nil else { return event }
                     switch event.keyCode {
                     case 53: self.dismissSuggestions(); return nil // Escape
                     case 36, 48: self.acceptSuggestion(editor); return nil // Return / Tab
@@ -1678,7 +1678,7 @@ struct SQLTextView: NSViewRepresentable {
             highlight(editor)
             // Do not invoke AppKit's completion panel from textDidChange.
             // That re-entrant path caused the previous editor freezes/crashes.
-            // Completion remains available through the standard macOS Complete command.
+            // Schedule outside the AppKit edit callback to avoid re-entrant completion.
             scheduleSuggestions(editor)
         }
 

docs/PHASE61-10-AUTOSUGGEST.md

@@ -0,0 +1,9 @@
+# Phase 61.10 — SQL autocomplete wiring repair
+
+- Resolve the active completion database from the most recent `USE schema;` line in the SQL buffer, without requiring the navigator to change or Run to be pressed.
+- Feed tables, views and per-table columns from the resolved database's persisted introspection snapshot to the SQL editor.
+- Following successful `USE`, load the schema and trigger introspection to populate the cache.
+- Avoid requiring `firstResponder === editor` for suggestion display: macOS may make a field editor or popover responder active during the asynchronous callback.
+- Use an application-defined popover to avoid semitransient auto-dismissal on focus changes.
+
+The implementation has not been compiled or tested on macOS. Validate using `USE AAMEDIUK;` followed by `SELECT * FROM ADCU`, and inspect the app's status for introspection errors if suggestions are empty.