修复：使用 OpenCode 2.x Plugin API，正确导入类型和 tool helper

src/index.ts

@@ -1,11 +1,11 @@
 /**
- * OpenCode Plugin: Show All Sessions
+ * OpenCode 2.x Plugin: Show All Sessions
  * 
  * This plugin provides /sessions-all command to show all sessions
  * regardless of the current working directory.
  */
 
-import { tool } from "@opencode-ai/plugin";
+import { type Plugin, tool } from "@opencode-ai/plugin";
 import { exec } from "child_process";
 import { promisify } from "util";
 import { join } from "path";
@@ -47,7 +47,6 @@ function getDbPath(): string {
 async function getAllSessionsFromDb(): Promise<Session[]> {
   try {
     const dbPath = getDbPath();
-    console.log(`[oc-session-all] Database path: ${dbPath}`);
     
     const query = `
       SELECT id, project_id, directory, title, time_created, time_updated, cost 
@@ -102,7 +101,10 @@ function formatCost(cost: number): string {
   return `$${cost.toFixed(4)}`;
 }
 
-export const OcSessionAll = async ({ project, client, $ }: any) => {
+/**
+ * OpenCode 2.x Plugin
+ */
+export const OcSessionAll: Plugin = async ({ project, client, $, directory, worktree }) => {
   console.log("[oc-session-all] Plugin loaded");
   
   return {
@@ -110,7 +112,7 @@ export const OcSessionAll = async ({ project, client, $ }: any) => {
       "sessions-all": tool({
         description: "显示所有项目的会话记录，绕过目录过滤限制。Show all sessions from all projects.",
         args: {},
-        async execute() {
+        async execute(args, context) {
           const sessions = await getAllSessionsFromDb();
           
           if (!sessions || sessions.length === 0) {
@@ -119,16 +121,6 @@ export const OcSessionAll = async ({ project, client, $ }: any) => {
           
           let output = "=== 所有会话记录 (All Sessions) ===\n\n";
           
-          // Group sessions by project
-          const byProject = new Map<string, Session[]>();
-          for (const session of sessions) {
-            const key = session.project_id || "unknown";
-            if (!byProject.has(key)) {
-              byProject.set(key, []);
-            }
-            byProject.get(key)!.push(session);
-          }
-          
           // Display sessions
           let index = 1;
           for (const session of sessions) {