feat(database): add grid range editing and SQL filters

Add rectangular database cell selection and TSV copy/paste, plus schema-aware SQL completion and highlighting in WHERE and ORDER BY fields. Preserve whitespace in highlighted SQL and match the input caret scroll width so the overlay remains aligned.

Co-authored-by: zzxzz12345 <[email protected]>

src/features/database/sql/complete.ts

@@ -47,6 +47,12 @@ export interface SqlCandidate {
   doc?: string;
 }
 
+/** Match the console's automatic trigger: a word or a qualifier followed by a dot. */
+export function shouldAutoCompleteSql(analysis: Analysis): boolean {
+  const typed = analysis.prefix.text;
+  return analysis.context.kind !== "none" && (!!typed || !!analysis.qualifier) && !/^\d/.test(typed);
+}
+
 const MAX_ALL_COLUMNS = 3000;
 
 const eq = (a: string | null | undefined, b: string | null | undefined) =>