feat(form-builder): add ApplyStatus, DismissalReasonType, BindingTargetType enums (WS-6)

DismissalReasonType has six values; manually_resolved is intentionally
absent because Resolve and Dismiss are separate workflows (RFC V2).

Refs: RFC-WS-6.md §3 (Q4 partial-status separation), §4 (V2 dismiss enum)

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

api/app/Enums/FormBuilder/ApplyStatus.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enums\FormBuilder;
+
+/**
+ * RFC-WS-6 §3 (Q4) — apply-state of a FormSubmission's binding pipeline.
+ * Distinct from {@see \App\Models\FormBuilder\FormSubmission::$identity_match_status},
+ * which tracks identity resolution (RFC O1).
+ */
+enum ApplyStatus: string
+{
+    case PENDING = 'pending';
+    case COMPLETED = 'completed';
+    case PARTIAL = 'partial';
+    case FAILED = 'failed';
+
+    public function isTerminal(): bool
+    {
+        return $this !== self::PENDING;
+    }
+
+    public function isOpen(): bool
+    {
+        return $this !== self::COMPLETED;
+    }
+
+    public function label(): string
+    {
+        return match ($this) {
+            self::PENDING => 'Wachtrij',
+            self::COMPLETED => 'Voltooid',
+            self::PARTIAL => 'Gedeeltelijk mislukt',
+            self::FAILED => 'Mislukt',
+        };
+    }
+}

api/app/Enums/FormBuilder/BindingTargetType.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enums\FormBuilder;
+
+/**
+ * RFC-WS-6 §4 (V1) — storage shape of a binding-target attribute, as
+ * declared by {@see \App\FormBuilder\Bindings\BindingTypeRegistry}.
+ *
+ * Source of truth for whether a target accepts the `Append` merge
+ * strategy (only COLLECTION does — V1 rejects scalar-append).
+ */
+enum BindingTargetType: string
+{
+    case SCALAR = 'scalar';
+    case COLLECTION = 'collection';
+    case RELATION = 'relation';
+}

api/app/Enums/FormBuilder/DismissalReasonType.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enums\FormBuilder;
+
+/**
+ * RFC-WS-6 §4 (V2) — typed reason for dismissing a
+ * {@see \App\Models\FormBuilder\FormSubmissionActionFailure}.
+ *
+ * `manually_resolved` is intentionally absent — Resolve and Dismiss are
+ * separate workflows (resolved_at + resolved_note vs. dismissed_at +
+ * dismissed_reason_type/note).
+ */
+enum DismissalReasonType: string
+{
+    case SCHEMA_DELETED = 'schema_deleted';
+    case TARGET_ENTITY_DELETED = 'target_entity_deleted';
+    case BINDING_REMOVED = 'binding_removed';
+    case DUPLICATE_SUBMISSION = 'duplicate_submission';
+    case DATA_QUALITY_ISSUE = 'data_quality_issue';
+    case OTHER = 'other';
+
+    public function requiresNote(): bool
+    {
+        return $this === self::OTHER;
+    }
+
+    public function label(): string
+    {
+        return match ($this) {
+            self::SCHEMA_DELETED => 'Formulier verwijderd',
+            self::TARGET_ENTITY_DELETED => 'Doel-entiteit verwijderd',
+            self::BINDING_REMOVED => 'Binding verwijderd',
+            self::DUPLICATE_SUBMISSION => 'Dubbele inzending',
+            self::DATA_QUALITY_ISSUE => 'Datakwaliteit-probleem',
+            self::OTHER => 'Anders',
+        };
+    }
+}