tweak: bash metadata context truncation and truncation prompts

packages/opencode/src/tool/bash.ts

@@ -17,6 +17,7 @@ import { Shell } from "@/shell/shell"
 import { BashArity } from "@/permission/arity"
 import { Truncate } from "./truncation"
 
+const MAX_METADATA_LENGTH = 30_000
 const DEFAULT_TIMEOUT = Flag.OPENCODE_EXPERIMENTAL_BASH_DEFAULT_TIMEOUT_MS || 2 * 60 * 1000
 
 export const log = Log.create({ service: "bash-tool" })
@@ -177,7 +178,7 @@ export const BashTool = Tool.define("bash", async () => {
         output += chunk.toString()
         ctx.metadata({
           metadata: {
-            output,
+            output: output.length > MAX_METADATA_LENGTH ? output.slice(0, MAX_METADATA_LENGTH) + "\n\n..." : output,
             description: params.description,
           },
         })
@@ -245,7 +246,7 @@ export const BashTool = Tool.define("bash", async () => {
       return {
         title: params.description,
         metadata: {
-          output,
+          output: output.length > MAX_METADATA_LENGTH ? output.slice(0, MAX_METADATA_LENGTH) + "\n\n..." : output,
           exit: proc.exitCode,
           description: params.description,
         },

packages/opencode/src/tool/truncation.ts

@@ -90,8 +90,8 @@ export namespace Truncate {
     await Bun.write(Bun.file(filepath), text)
 
     const hint = hasTaskTool(agent)
-      ? `The tool output was too large, the full output was written to the following file: ${filepath}\nIMPORTANT: Use the Task tool to have a subagent process this file with Grep and Read (with offset/limit). Do NOT read the full file yourself - delegate to save context.`
-      : `The tool output was too large, the full output was written to the following file: ${filepath}\nUse Grep to search the full content or Read with offset/limit to read specific sections.`
+      ? `The tool call succeeded but the output was truncated. Full output saved to: ${filepath}\nUse the Task tool to have a subagent process this file with Grep and Read (with offset/limit). Do NOT read the full file yourself - delegate to save context.`
+      : `The tool call succeeded but the output was truncated. Full output saved to: ${filepath}\nUse Grep to search the full content or Read with offset/limit to view specific sections.`
     const message =
       direction === "head"
         ? `${preview}\n\n...${removed} ${unit} truncated...\n\n${hint}`