feat: edit a transcript in the Notitie editor, delete button per transcript

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

Sources/Sst/AppModel.swift

@@ -57,6 +57,8 @@ final class AppModel: ObservableObject {
     @Published private(set) var historyRevision = 0
     @Published private(set) var dictionaryRevision = 0
     @Published private(set) var searchFocusTick = 0
+    /// The transcript currently open in the Notitie editor, if any.
+    @Published var editingEntryID: UUID?
     @Published var lastError: String?
     @Published var section: Section = .transcripts
     @Published var confirmingClearHistory = false
@@ -375,6 +377,12 @@ final class AppModel: ObservableObject {
 
     // MARK: preview
 
+    /// Opens a transcript in the editor; edits go straight back into the history.
+    func edit(entry id: UUID) {
+        editingEntryID = id
+        section = .note
+    }
+
     private func loadPreviewData() {
         note.text = "Notities voor vrijdag: Supabase-migratie plannen en Claude Code uitproberen."
         try? dictionary.load()