fix(frontend): apply script editor timeout to preview/Test runs (#9794)

The custom timeout configured in the script editor settings was only
honored for deployed script runs: it is persisted on the script row and
passed as custom_timeout when running by hash/path. Preview ("Test")
runs derive their timeout solely from the `timeout` query param of
/jobs/run/preview, which the editor never sent, so Test silently fell
back to the instance default.

Forward the editor's timeout setting through ScriptBuilder ->
ScriptEditor -> JobLoader.runPreview as the preview run's timeout query
param. The backend already clamps custom_timeout against the instance
max in resolve_job_timeout, so previews get the same ceiling as deployed
runs.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

backend/windmill-api/openapi.yaml

@@ -11800,6 +11800,11 @@ paths:
           in: query
           schema:
             type: boolean
+        - name: timeout
+          description: custom timeout in seconds for this preview run
+          in: query
+          schema:
+            type: integer
         - $ref: "#/components/parameters/NewJobId"
 
       requestBody:

frontend/src/lib/components/JobLoader.svelte

@@ -336,12 +336,14 @@
 		callbacks?: Callbacks,
 		flowPath?: string,
 		modules?: Record<string, import('$lib/gen').ScriptModule> | null,
-		tempScriptRefs?: Record<string, string>
+		tempScriptRefs?: Record<string, string>,
+		timeout?: number
 	): Promise<string> {
 		return abstractRun(
 			() =>
 				JobService.runScriptPreview({
 					workspace: $workspaceStore!,
+					timeout,
 					requestBody: {
 						path,
 						content: code,

frontend/src/lib/components/ScriptBuilder.svelte

@@ -2016,6 +2016,7 @@
 			stablePathForCaptures={initialPath || fakeInitialPath}
 			bind:code={script.content}
 			lang={script.language}
+			timeout={script.timeout}
 			kind={script.kind}
 			autoKind={script.auto_kind}
 			{template}

frontend/src/lib/components/ScriptEditor.svelte

@@ -158,6 +158,10 @@
 		// succeeded.
 		requireValidAssets?: boolean
 		args: Record<string, any>
+		// Custom timeout (in seconds) from the script settings. Forwarded to the
+		// preview run so "Test" honors the same timeout a deployed run would,
+		// instead of silently falling back to the instance default.
+		timeout?: number
 		selectedTab?: 'main' | 'preprocessor' | 'diagram'
 		hasPreprocessor?: boolean
 		captureTable?: CaptureTable | undefined
@@ -215,6 +219,7 @@
 		customUi = undefined,
 		requireValidAssets = false,
 		args = $bindable(),
+		timeout = undefined,
 		selectedTab = $bindable('main'),
 		hasPreprocessor = $bindable(false),
 		captureTable = $bindable(undefined),
@@ -791,7 +796,9 @@
 				}
 			},
 			undefined,
-			activeModuleTab !== null ? undefined : modules
+			activeModuleTab !== null ? undefined : modules,
+			undefined,
+			timeout
 		)
 		if (job) {
 			onTestJob?.({ jobId: job })