fix: thread URL path into ScriptBuilder.stopSync (was using empty initialPath)

frontend/src/lib/components/ScriptBuilder.svelte

@@ -106,6 +106,7 @@
 		script = $bindable(),
 		fullyLoaded = true,
 		initialPath = $bindable(''),
+		userDraftPath = '',
 		template = $bindable('script'),
 		initialArgs = {},
 		lockedLanguage = false,
@@ -348,10 +349,12 @@
 		// editor with the template's `initialCode` is a programmatic
 		// write that shouldn't count as the user's "first edit" and
 		// shouldn't POST to the server. The route's UserDraft handle is
-		// keyed by `initialPath` (the URL path). Resumed in the async
-		// `.finally` so language switches AFTER bootstrap (which also
-		// call `initContent`) sync normally.
-		UserDraft.stopSync('script', initialPath)
+		// keyed by `userDraftPath` (the URL path), distinct from
+		// `initialPath` which is the editor-displayed path (empty for
+		// new drafts). Resumed in the async `.finally` so language
+		// switches AFTER bootstrap (which also call `initContent`) sync
+		// normally.
+		UserDraft.stopSync('script', userDraftPath)
 		if (template === 'wac_python') {
 			script.modules = {
 				'helper.py': {
@@ -368,7 +371,7 @@
 			}
 		}
 		initContent(script.language, script.kind, template).finally(() => {
-			UserDraft.restartSync('script', initialPath)
+			UserDraft.restartSync('script', userDraftPath)
 		})
 	}
 

frontend/src/lib/components/script_builder.ts

@@ -15,6 +15,18 @@ export interface ScriptBuilderProps {
 	disableAi?: boolean
 	fullyLoaded?: boolean
 	initialPath?: string
+	/**
+	 * Path the route's `UserDraft.use<EditableScript>('script', ...)`
+	 * handle is keyed by. Distinct from `initialPath` for new drafts —
+	 * `initialPath` is the displayed/editor path (empty for new), while
+	 * this is the URL path the draft is persisted under (`u/{user}/
+	 * draft_{uuid}`). Used to bracket the bootstrap `initContent` write
+	 * with `UserDraft.stopSync` / `restartSync` so the template seed
+	 * doesn't POST before the user's first real edit. Default to `''`
+	 * for backwards compat with callers that don't manage drafts; the
+	 * stop/restart pair is a no-op on a non-live entry.
+	 */
+	userDraftPath?: string
 	template?:
 		| 'docker'
 		| 'bunnative'

frontend/src/routes/(root)/(logged)/scripts/edit/[...path]/+page.svelte

@@ -344,6 +344,7 @@
 	<ScriptBuilder
 		bind:this={scriptBuilder}
 		{initialPath}
+		userDraftPath={draftPath}
 		bind:script={scriptHandle.draft}
 		{fullyLoaded}
 		bind:savedScript