fix(editor): preserve current SQL execution boundaries

apps/desktop/src/lib/__tests__/sql/sqlExecutionTarget.spec.ts

@@ -1,5 +1,9 @@
 import { describe, expect, it } from "vitest";
-import { resolveExecutableSql } from "@/lib/sql/sqlExecutionTarget";
+import { executionCandidateForMode, resolveExecutableSql, type SqlExecutionCandidate } from "@/lib/sql/sqlExecutionTarget";
+
+function candidate(kind: SqlExecutionCandidate["kind"], supportedKinds: SqlExecutionCandidate["supportedKinds"]): SqlExecutionCandidate {
+  return { kind, supportedKinds, label: kind, sql: "SELECT 1", from: 0, to: 8 };
+}
 
 describe("resolveExecutableSql", () => {
   it("uses selected SQL before cursor-mode resolution", () => {
@@ -10,3 +14,27 @@ describe("resolveExecutableSql", () => {
     expect(resolveExecutableSql(sql, selectedSql, { mode: "current", cursorPos: cursorAfterFirstSemicolon })).toBe("select 2;");
   });
 });
+
+describe("executionCandidateForMode", () => {
+  it("does not fall back to all SQL when current mode has no cursor statement", () => {
+    const all = candidate("all", ["all"]);
+
+    expect(executionCandidateForMode([all], "current")).toBeNull();
+    expect(executionCandidateForMode([all], "all")).toBe(all);
+  });
+
+  it("uses the deduplicated candidate when one statement is both current and all", () => {
+    const currentAndAll = candidate("all", ["cursor", "all"]);
+
+    expect(executionCandidateForMode([currentAndAll], "current")).toBe(currentAndAll);
+    expect(executionCandidateForMode([currentAndAll], "all")).toBe(currentAndAll);
+  });
+
+  it("selects the exact target when current and all candidates are distinct", () => {
+    const current = candidate("cursor", ["cursor"]);
+    const all = candidate("all", ["all"]);
+
+    expect(executionCandidateForMode([current, all], "current")).toBe(current);
+    expect(executionCandidateForMode([current, all], "all")).toBe(all);
+  });
+});