diff --git a/frontend/src/lib/components/assets/AssetGraph/AssetGraphCanvas.svelte b/frontend/src/lib/components/assets/AssetGraph/AssetGraphCanvas.svelte
index 67dbc5b8bd..1c9482ca81 100644
--- a/frontend/src/lib/components/assets/AssetGraph/AssetGraphCanvas.svelte
+++ b/frontend/src/lib/components/assets/AssetGraph/AssetGraphCanvas.svelte
@@ -328,7 +328,14 @@
 				model.edges.some((x) => x.kind === kind && x.source === e.source && x.target === id)
 			const target = { script: script.path as string, asset, reads: has('lineage-read') }
 			if (has('trigger-asset')) stop.push(target)
-			else if (target.reads) listen.push(target)
+			// A script rerunning on its own writes would loop: offered only for inputs.
+			else if (
+				target.reads &&
+				!model.edges.some(
+					(x) => x.kind === 'lineage-write' && x.source === id && x.target === e.source
+				)
+			)
+				listen.push(target)
 		}
 		const where = (ts: EdgeTarget[]) =>
 			ts.length === 1 ? ts[0].script : `${ts.length} scripts: ${ts.map((t) => t.script).join(', ')}`
@@ -343,7 +350,10 @@
 		if (stop.length) {
 			out.push({
 				label: 'Stop rerunning on writes',
-				detail: `${stopListeningChangeText(asset, stop.some((t) => t.reads))} in ${where(stop)}; only the annotation header changes. Saved as a draft.`,
+				detail: `${stopListeningChangeText(
+					asset,
+					stop.some((t) => t.reads)
+				)} in ${where(stop)}; only the annotation header changes. Saved as a draft.`,
 				run: () => onEdgeAction?.({ action: 'stop', targets: stop })
 			})
 		}
@@ -356,7 +366,8 @@
 		const nameOf = (id: string) => {
 			const n = byId.get(id)
 			if (!n) return id.replace(/^[^:]+:/, '')
-			if (n.type === 'asset') return formatShortAssetPath({ kind: n.data.asset_kind, path: n.data.path })
+			if (n.type === 'asset')
+				return formatShortAssetPath({ kind: n.data.asset_kind, path: n.data.path })
 			if (n.type === 'no-asset') return 'the scripts that build no asset'
 			if (n.type === 'trigger') return n.data.summary || n.data.ref
 			return n.data.summary || n.data.path
@@ -1227,13 +1238,20 @@
 						}
 					: onDeleteAssetUpstream && u
 						? {
-								deleteBlocked: !u.multiple
-									? r?.runnable_kind === 'flow'
-										? 'a flow builds it'
-										: 'its script builds other assets too'
-									: u.runnableIds.length > 1
-										? 'several scripts build it'
-										: 'its script has several triggers'
+								// The No-asset card stands for its scripts; an asset is built by them.
+								deleteBlocked: data.noAsset
+									? !u.multiple
+										? 'it stands for a flow'
+										: u.runnableIds.length > 1
+											? 'it stands for several scripts'
+											: 'its script has several triggers'
+									: !u.multiple
+										? r?.runnable_kind === 'flow'
+											? 'a flow builds it'
+											: 'its script builds other assets too'
+										: u.runnableIds.length > 1
+											? 'several scripts build it'
+											: 'its script has several triggers'
 							}
 						: {})
 			}
@@ -1903,10 +1921,7 @@
 {/if}
 
 {#if scheduleWizard}
-	<div
-		class="fixed w-0 h-0"
-		style="left: {scheduleWizard.at.x}px; top: {scheduleWizard.at.y}px;"
-	>
+	<div class="fixed w-0 h-0" style="left: {scheduleWizard.at.x}px; top: {scheduleWizard.at.y}px;">
 		<PipelineInsertMenu
 			kinds={[{ id: 'schedule', label: 'On schedule', description: '', icon: Clock }]}
 			onPick={() => {}}
diff --git a/frontend/src/routes/(root)/(logged)/pipeline/[folder]/+page.svelte b/frontend/src/routes/(root)/(logged)/pipeline/[folder]/+page.svelte
index e2e37cffc9..9351026a7e 100644
--- a/frontend/src/routes/(root)/(logged)/pipeline/[folder]/+page.svelte
+++ b/frontend/src/routes/(root)/(logged)/pipeline/[folder]/+page.svelte
@@ -185,6 +185,8 @@
 			if (pe.folder !== f) {
 				if (pe.folder !== undefined) {
 					pe.reset()
+					// The set-aside edit pane belongs to the folder being left.
+					editPane = undefined
 					// Re-scope the Global chat's pipeline prompt to the new folder. The
 					// helper methods already read the reactive folder, but the system
 					// message string was built for the old one and is only rebuilt when
@@ -241,7 +243,7 @@
 		if (m === 'view') url.searchParams.delete('mode')
 		else url.searchParams.set('mode', m)
 		// Same-pathname navigation — the drafts leave-guard skips it.
-		goto(url, { replaceState: opts?.replace ?? false, keepFocus: true, noScroll: true })
+		return goto(url, { replaceState: opts?.replace ?? false, keepFocus: true, noScroll: true })
 	}
 	// View-mode drafts overlay: "what View will show once the drafts are
 	// deployed". A view variant rather than a third mode — ephemeral (not
@@ -249,17 +251,6 @@
 	// shared link couldn't reproduce it anyway).
 	let includeDrafts = $state(false)
 
-	// Asset-kind → syntax-prefix for `// on <ref>` reconstruction. Mirrors
-	// ASSET_KINDS in backend/parsers/windmill-parser/src/asset_parser.rs.
-	const ASSET_PREFIX: Record<AssetKind, string> = {
-		s3object: 's3://',
-		resource: '$res:',
-		ducklake: 'ducklake://',
-		datatable: 'datatable://',
-		volume: 'volume://',
-		dbt: 'dbt://'
-	}
-
 	// Path-input split for the insert menu: a read-only `f/<folder>/` chip
 	// on the left the user can't delete, plus an editable suffix seeded
 	// with a placeholder name.
@@ -1210,7 +1201,7 @@
 		aiPrompt?: string,
 		options?: PipelineInsertOptions
 	) {
-		const ref = `${ASSET_PREFIX[asset.kind]}${asset.path}`
+		const ref = assetRef(asset)
 		openMaterializerDraft(
 			language,
 			scriptPath,
@@ -1306,7 +1297,9 @@
 	): Promise<boolean> {
 		const ws = $workspaceStore
 		if (!ws) return false
-		if (mode !== 'edit') setMode('edit')
+		// Wait for Edit: the switch reopens Edit's set-aside pane when it lands, which
+		// would take the place of the draft opened below.
+		if (mode !== 'edit') await setMode('edit')
 		pe.selection = undefined
 		pe.activeDraftPath = undefined
 		await tick()
@@ -1430,6 +1423,15 @@
 						scheduleFor: {
 							script: path,
 							onSchedule: async (schedule) => {
+								// Checked first: a header saying `on schedule` with no schedule
+								// behind it would be a new error, not a fix.
+								if (pe.triggerDrafts.has(triggerDraftKey('schedule', schedule.path))) {
+									sendUserToast(
+										`Another draft schedule already uses the path ${schedule.path}`,
+										true
+									)
+									return
+								}
 								const ok = await editScriptHeader(
 									path,
 									(c) => addTriggerDirective(c, 'schedule'),
@@ -1741,22 +1743,29 @@
 		const showDrafts = mode === 'edit' || includeDrafts
 		const errors = nodeErrors
 		const schedules = scheduleInfo.current
+		// An asset drawn only because a script subscribes to it, which nothing ever
+		// writes, stands for nothing: it is left out, and the subscriber carries the
+		// error. One a script reads or writes stays.
+		const used = new Set(g.edges.map((e) => `${e.asset_kind}:${e.asset_path}`))
+		const phantom = new Set([...errors.unwritten.keys()].filter((k) => !used.has(k)))
+		const triggers = g.triggers.filter(
+			(t) => t.trigger_kind !== 'asset' || !phantom.has(`${t.asset_kind}:${t.asset_path}`)
+		)
 		return {
 			...g,
 			triggers: schedules?.size
-				? g.triggers.map((t) =>
+				? triggers.map((t) =>
 						t.trigger_kind === 'schedule' && t.path && !t.draft && schedules.has(t.path)
 							? { ...t, ...schedules.get(t.path) }
 							: t
 					)
-				: g.triggers,
-			assets:
-				errors.assets.size === 0
-					? g.assets
-					: g.assets.map((a) => {
-							const error = errors.assets.get(`${a.kind}:${a.path}`)
-							return error ? { ...a, error } : a
-						}),
+				: triggers,
+			assets: g.assets
+				.filter((a) => !phantom.has(`${a.kind}:${a.path}`))
+				.map((a) => {
+					const error = errors.assets.get(`${a.kind}:${a.path}`)
+					return error ? { ...a, error } : a
+				}),
 			runnables: g.runnables.map((r) => {
 				const draft = showDrafts ? pe.drafts.get(r.path)?.script : undefined
 				const meta = scriptMetaByPath.get(r.path)