feat: add schema helper aliases (latest)

- Add schemas/latest.ts and schemas_loose/latest.ts as aliases to current version
- Update constants.ts to use latest.ts instead of hardcoded version imports
- This makes version updates easier - only need to update latest.ts pointer

src/schemas/index.ts

@@ -1,6 +1,7 @@
 export * as v0_1 from "./0.1.js";
 export * as v0_2 from "./0.2.js";
+export * as latest from "./latest.js";
 export {
   MANIFEST_VERSION as CURRENT_MANIFEST_VERSION,
   McpbManifestSchema,
-} from "./0.2.js";
+} from "./latest.js";

src/schemas/latest.ts

@@ -0,0 +1 @@
+export * from "./0.2.js";

src/schemas_loose/index.ts

@@ -1,2 +1,3 @@
 export * as v0_1 from "./0.1.js";
 export * as v0_2 from "./0.2.js";
+export * as latest from "./latest.js";

src/schemas_loose/latest.ts

@@ -0,0 +1 @@
+export * from "./0.2.js";

src/shared/constants.ts

@@ -1,7 +1,9 @@
 import { McpbManifestSchema as ManifestSchemaV0_1 } from "../schemas/0.1.js";
 import { McpbManifestSchema as ManifestSchemaV0_2 } from "../schemas/0.2.js";
+import { McpbManifestSchema as CurrentManifestSchema } from "../schemas/latest.js";
 import { McpbManifestSchema as LooseManifestSchemaV0_1 } from "../schemas_loose/0.1.js";
 import { McpbManifestSchema as LooseManifestSchemaV0_2 } from "../schemas_loose/0.2.js";
+import { McpbManifestSchema as CurrentLooseManifestSchema } from "../schemas_loose/latest.js";
 
 /**
  * Current manifest version - the version that new manifests should use
@@ -27,11 +29,9 @@ export const MANIFEST_SCHEMAS_LOOSE = {
 /**
  * Get the current manifest schema based on CURRENT_MANIFEST_VERSION
  */
-export const CURRENT_MANIFEST_SCHEMA =
-  MANIFEST_SCHEMAS[CURRENT_MANIFEST_VERSION];
+export const CURRENT_MANIFEST_SCHEMA = CurrentManifestSchema;
 
 /**
  * Get the current loose manifest schema based on CURRENT_MANIFEST_VERSION
  */
-export const CURRENT_MANIFEST_SCHEMA_LOOSE =
-  MANIFEST_SCHEMAS_LOOSE[CURRENT_MANIFEST_VERSION];
+export const CURRENT_MANIFEST_SCHEMA_LOOSE = CurrentLooseManifestSchema;