v0.4.0 — Phase β-3 Editor

Voller Editor-Flow für Decks und 5 Card-Types (basic, basic-reverse,
cloze, typing, multiple-choice). image-occlusion + audio-front kommen
mit β-4 (Media). Anki-Import bleibt vorerst aus (Web parsed client-
side, gibt keinen Server-Import-Endpoint zu rufen).

- DeckCreateBody/UpdateBody, CardCreateBody/UpdateBody Encodable
  mit snake_case-CodingKeys, nil-Felder werden weggelassen
- CardFieldsBuilder mit Type-spezifischen Pflicht-Feld-Konstruktoren
- CardsAPI: createDeck/updateDeck/deleteDeck +
  createCard/updateCard/deleteCard
- DeckEditorView (Create + Edit in einer View): Color-Picker mit
  8-Preset-Palette, Category-Picker (11 Kats, deutsche Labels),
  Visibility-Segmented-Control
- CardEditorView mit Type-Picker und dynamischen Feldern je Typ.
  Cloze-Sektion zeigt Live-Cluster-Count und Hint-Syntax-Hinweis.
  image-occlusion/audio-front zeigen β-4-Placeholder
- DeckDetailView mit Action-Buttons (Lernen, Karte hinzufügen,
  Bearbeiten, Löschen mit Confirmation)
- DeckListView: "+"-Button im Toolbar (Leading) für Create-Sheet
- 7 neue Encoding-Tests (24 Unit-Tests + 1 UI-Test grün)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Sources/Core/Domain/CardMutations.swift

@@ -0,0 +1,56 @@
+import Foundation
+
+/// Body für `POST /api/v1/cards`. Aus `CardCreateSchema`.
+///
+/// `fields` ist type-abhängig — Server validiert via
+/// `validateFieldsForType()`. Pflicht-Keys pro Type:
+/// - basic, basic-reverse: `front`, `back`
+/// - cloze: `text` (mit `{{cN::...}}`-Clustern)
+/// - typing: `front`, `answer`
+/// - multiple-choice: `front`, `answer`
+/// - image-occlusion: `image_ref`, `mask_regions` (β-4)
+/// - audio-front: `audio_ref`, `back` (β-4)
+struct CardCreateBody: Encodable, Sendable {
+    let deckId: String
+    let type: CardType
+    let fields: [String: String]
+    let mediaRefs: [String]?
+
+    enum CodingKeys: String, CodingKey {
+        case deckId = "deck_id"
+        case type
+        case fields
+        case mediaRefs = "media_refs"
+    }
+}
+
+/// Body für `PATCH /api/v1/cards/:id`. Nur `fields` und `media_refs` —
+/// Type und deck_id sind immutable (Server-Schema).
+struct CardUpdateBody: Encodable, Sendable {
+    var fields: [String: String]?
+    var mediaRefs: [String]?
+
+    enum CodingKeys: String, CodingKey {
+        case fields
+        case mediaRefs = "media_refs"
+    }
+}
+
+/// Hilfs-Builder für Card-Type-spezifische `fields`-Dictionaries.
+enum CardFieldsBuilder {
+    static func basic(front: String, back: String) -> [String: String] {
+        ["front": front, "back": back]
+    }
+
+    static func cloze(text: String) -> [String: String] {
+        ["text": text]
+    }
+
+    static func typing(front: String, answer: String) -> [String: String] {
+        ["front": front, "answer": answer]
+    }
+
+    static func multipleChoice(front: String, answer: String) -> [String: String] {
+        ["front": front, "answer": answer]
+    }
+}

Sources/Core/Domain/DeckMutations.swift

@@ -0,0 +1,38 @@
+import Foundation
+
+/// Body für `POST /api/v1/decks`. Aus `DeckCreateSchema` in
+/// `cards/packages/cards-domain/src/schemas/deck.ts`.
+struct DeckCreateBody: Encodable, Sendable {
+    let name: String
+    let description: String?
+    let color: String?
+    let category: DeckCategory?
+    let visibility: DeckVisibility?
+
+    enum CodingKeys: String, CodingKey {
+        case name
+        case description
+        case color
+        case category
+        case visibility
+    }
+}
+
+/// Body für `PATCH /api/v1/decks/:id`. Alle Felder optional plus `archived`.
+struct DeckUpdateBody: Encodable, Sendable {
+    var name: String?
+    var description: String?
+    var color: String?
+    var category: DeckCategory?
+    var visibility: DeckVisibility?
+    var archived: Bool?
+
+    enum CodingKeys: String, CodingKey {
+        case name
+        case description
+        case color
+        case category
+        case visibility
+        case archived
+    }
+}