fix: taking the latest moves the head each editor knows, not just the base

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

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

@@ -641,6 +641,8 @@
 							parentVersion = head
 							if (deployedBaseline) deployedBaseline = { ...deployedBaseline, parent_version: head }
 							draftBaseVersion = String(head)
+							// See /scripts/edit: the head this page knows moves with the base.
+							deployedHeadVersion = String(head)
 							// Persisted explicitly, as the script and flow routes do: the reactive
 							// bundle mirror is parked while auto-save is off, and a parked write is
 							// dropped on pagehide, so the new base would not survive a reload.

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

@@ -558,6 +558,8 @@
 					if (!draftSync.draft || head == null || !$workspaceStore) return
 					draftSync.draft = { ...draftSync.draft, version_id: head }
 					draftBaseVersion = String(head)
+					// See /scripts/edit: the head this page knows moves with the base.
+					version = head
 					await UserDraft.forcePersist('flow', flowDraftPath, { workspace: $workspaceStore })
 				}
 			: undefined}

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

@@ -543,6 +543,9 @@
 					// compares equal and the autosave can discard it.
 					if (deployedBaseline) deployedBaseline = { ...deployedBaseline, parent_hash: head }
 					draftBaseHash = head
+					// The head this page knows moves with it, or the prompt reopens comparing
+					// the fresh base against the stale head, the two the wrong way round.
+					deployedHeadHash = head
 					await UserDraft.forcePersist('script', draftPath, { workspace: $workspaceStore })
 				}
 			: undefined}