fix(hooks): add lowercase tool names to truncator hooks

Tool names in builtinTools are lowercase ('grep', 'glob') but truncator
hooks were checking for capitalized names ('Grep', 'Glob'), causing
truncation to never trigger and resulting in context window overflow.

🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

src/hooks/grep-output-truncator.ts

@@ -75,7 +75,7 @@ function truncateToTokenLimit(output: string, maxTokens: number): { result: stri
 }
 
 export function createGrepOutputTruncatorHook(ctx: PluginInput) {
-  const GREP_TOOLS = ["safe_grep", "Grep"]
+  const GREP_TOOLS = ["grep", "Grep", "safe_grep"]
 
   const toolExecuteAfter = async (
     input: { tool: string; sessionID: string; callID: string },

src/hooks/tool-output-truncator.ts

@@ -2,8 +2,10 @@ import type { PluginInput } from "@opencode-ai/plugin"
 import { createDynamicTruncator } from "../shared/dynamic-truncator"
 
 const TRUNCATABLE_TOOLS = [
+  "grep",
   "Grep",
   "safe_grep",
+  "glob",
   "Glob",
   "safe_glob",
   "lsp_find_references",