remove decodable for now

Sources/ComposableArchitecture/SharedState/Shared.swift

@@ -224,16 +224,6 @@ import Foundation
     }
   }
 
-  extension Shared: Decodable where Value: Decodable {
-    public init(from decoder: Decoder) throws {
-      do {
-        self.init(try decoder.singleValueContainer().decode(Value.self))
-      } catch {
-        self.init(try .init(from: decoder))
-      }
-    }
-  }
-
   extension Shared: Encodable where Value: Encodable {
     public func encode(to encoder: Encoder) throws {
       do {

Tests/ComposableArchitectureTests/SharedTests.swift

@@ -639,6 +639,29 @@ final class SharedTests: XCTestCase {
       $0.count = 42
     }
   }
+
+  func test_Codable_AppStorage() throws {
+    struct State: Codable {
+      @Shared(.appStorage("count")) var count = 0
+      init(count: Int = 0) {
+        self.count = count
+      }
+      init(from decoder: any Decoder) throws {
+        self._count = Shared(wrappedValue: 0, .appStorage("count"))
+      }
+    }
+
+    let state = State()
+    state.count = 42
+
+    let data = try JSONEncoder().encode(state)
+
+    state.count += 1
+
+    let decodedState = try JSONDecoder().decode(State.self, from: data)
+
+    XCTAssertEqual(decodedState.count, 43)
+  }
 }
 
 @Reducer