refactor(presets): simplify TestPreset interface and update jobs handling

Author: Hannia Valera

src/api.ts

@@ -98,9 +98,7 @@ class CMakeProjectWrapper implements api.Project {
 
     get testPreset() {
         logApiTelemetry('getTestPreset');
-        // Cast: internal TestPreset widens execution.jobs to number | string (v11+),
-        // but the external API still exposes the narrower number type.
-        return this.project.testPreset as api.TestPreset | null ?? undefined;
+        return this.project.testPreset ?? undefined;
     }
 
     get packagePreset() {

src/presets/preset.ts

@@ -256,15 +256,7 @@ export interface TestPresetPrivate {
     __generator?: string; // Getting this from the config preset
 }
 
-// v11+: execution.jobs can be an empty string (--parallel with no value).
-// Widen the type from the API's number to number | string.
-export interface TestExecutionOptions extends Omit<api.ExecutionOptions, 'jobs'> {
-    jobs?: number | string;
-}
-
-export interface TestPreset extends Omit<api.TestPreset, 'execution'>, TestPresetPrivate, PresetPrivate {
-    execution?: TestExecutionOptions;
-}
+export interface TestPreset extends api.TestPreset, TestPresetPrivate, PresetPrivate {}
 
 export interface PackagePresetPrivate {
     __binaryDir?: string; // Getting this from the config preset
@@ -2307,10 +2299,12 @@ export function testArgs(preset: TestPreset): string[] {
         preset.execution.enableFailover && result.push('-F');
         if (preset.execution.jobs !== undefined) {
             // v11+: jobs can be an empty string meaning --parallel with no value (auto-detect).
-            if (preset.execution.jobs === '') {
+            // The API type currently declares jobs as number; will be updated to number | string.
+            const jobs = preset.execution.jobs as number | string;
+            if (jobs === '') {
                 result.push('--parallel');
             } else {
-                result.push('--parallel', preset.execution.jobs.toString());
+                result.push('--parallel', jobs.toString());
             }
         }
         preset.execution.resourceSpecFile && result.push('--resource-spec-file', preset.execution.resourceSpecFile);