fix: use ctx.directory instead of process.cwd() in tools for Desktop app support

Convert grep, glob, ast-grep, and session-manager tools from static exports to factory functions that receive PluginInput context. This allows them to use ctx.directory instead of process.cwd(), fixing issue #658 where tools search from wrong directory in OpenCode Desktop app.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/index.ts

@@ -86,6 +86,10 @@ import {
   createTaskGetTool,
   createTaskList,
   createTaskUpdateTool,
+  createGrepTools,
+  createGlobTools,
+  createAstGrepTools,
+  createSessionManagerTools,
 } from "./tools";
 import {
   CATEGORY_DESCRIPTIONS,
@@ -538,6 +542,10 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
 
   const allTools: Record<string, ToolDefinition> = {
     ...builtinTools,
+    ...createGrepTools(ctx),
+    ...createGlobTools(ctx),
+    ...createAstGrepTools(ctx),
+    ...createSessionManagerTools(ctx),
     ...backgroundTools,
     call_omo_agent: callOmoAgent,
     ...(lookAt ? { look_at: lookAt } : {}),