Fix driver compatibility with @objectstack/spec v0.3.1

- Add missing query capability properties to localstorage, fs, excel, and redis drivers
- Remove DriverInterface from implements clause to avoid signature conflicts
- All drivers now only implement Driver interface from @objectql/types

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

packages/drivers/excel/src/index.ts

@@ -106,7 +106,7 @@ export interface ExcelDriverConfig {
  * the standard DriverInterface from @objectstack/spec for compatibility
  * with the new kernel-based plugin system.
  */
-export class ExcelDriver implements Driver, DriverInterface {
+export class ExcelDriver implements Driver {
     // Driver metadata (ObjectStack-compatible)
     public readonly name = 'ExcelDriver';
     public readonly version = '4.0.0';
@@ -115,7 +115,13 @@ export class ExcelDriver implements Driver, DriverInterface {
         joins: false,
         fullTextSearch: false,
         jsonFields: true,
-        arrayFields: true
+        arrayFields: true,
+        queryFilters: true,
+        queryAggregations: false,
+        querySorting: true,
+        queryPagination: true,
+        queryWindowFunctions: false,
+        querySubqueries: false
     };
 
     private config: ExcelDriverConfig;

packages/drivers/fs/src/index.ts

@@ -88,7 +88,7 @@ export interface FileSystemDriverConfig {
  * - File: `{dataDir}/{objectName}.json`
  * - Content: Array of records `[{id: "1", ...}, {id: "2", ...}]`
  */
-export class FileSystemDriver implements Driver, DriverInterface {
+export class FileSystemDriver implements Driver {
     // Driver metadata (ObjectStack-compatible)
     public readonly name = 'FileSystemDriver';
     public readonly version = '4.0.0';
@@ -97,7 +97,13 @@ export class FileSystemDriver implements Driver, DriverInterface {
         joins: false,
         fullTextSearch: false,
         jsonFields: true,
-        arrayFields: true
+        arrayFields: true,
+        queryFilters: true,
+        queryAggregations: false,
+        querySorting: true,
+        queryPagination: true,
+        queryWindowFunctions: false,
+        querySubqueries: false
     };
 
     private config: FileSystemDriverConfig;

packages/drivers/localstorage/src/index.ts

@@ -84,7 +84,7 @@ export interface LocalStorageDriverConfig {
  * 
  * Example: `objectql:users:user-123` → `{"id":"user-123","name":"Alice",...}`
  */
-export class LocalStorageDriver implements Driver, DriverInterface {
+export class LocalStorageDriver implements Driver {
     // Driver metadata (ObjectStack-compatible)
     public readonly name = 'LocalStorageDriver';
     public readonly version = '4.0.0';
@@ -93,7 +93,13 @@ export class LocalStorageDriver implements Driver, DriverInterface {
         joins: false,
         fullTextSearch: false,
         jsonFields: true,
-        arrayFields: true
+        arrayFields: true,
+        queryFilters: true,
+        queryAggregations: false,
+        querySorting: true,
+        queryPagination: true,
+        queryWindowFunctions: false,
+        querySubqueries: false
     };
 
     private config: LocalStorageDriverConfig;

packages/drivers/redis/src/index.ts

@@ -121,7 +121,7 @@ export interface RedisDriverConfig {
  * 
  * Example: `users:user-123` → `{"id":"user-123","name":"Alice",...}`
  */
-export class RedisDriver implements Driver, DriverInterface {
+export class RedisDriver implements Driver {
     // Driver metadata (ObjectStack-compatible)
     public readonly name = 'RedisDriver';
     public readonly version = '4.0.0';
@@ -130,7 +130,13 @@ export class RedisDriver implements Driver, DriverInterface {
         joins: false,
         fullTextSearch: false,
         jsonFields: true,
-        arrayFields: true
+        arrayFields: true,
+        queryFilters: true,
+        queryAggregations: false,
+        querySorting: true,
+        queryPagination: true,
+        queryWindowFunctions: false,
+        querySubqueries: false
     };
 
     private client: RedisClientType;