LMS-BGN/.trae/rules/bmad-tool-core-shard-doc.md

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# Shard Document Tool Rule
This rule defines the Shard Document tool.
## Tool Definition
When this tool is triggered, execute the following:
<tool id=".bmad/core/tasks/shard-doc" name="Shard Document"
description="Splits large markdown documents into smaller, organized files based on level 2 (default) sections" webskip="true"
standalone="true">
<objective>Split large markdown documents into smaller, organized files based on level 2 sections using @kayvan/markdown-tree-parser tool</objective>
<llm critical="true">
<i>MANDATORY: Execute ALL steps in the flow section IN EXACT ORDER</i>
<i>DO NOT skip steps or change the sequence</i>
<i>HALT immediately when halt-conditions are met</i>
<i>Each action xml tag within step xml tag is a REQUIRED action to complete that step</i>
<i>Sections outside flow (validation, output, critical-context) provide essential context - review and apply throughout execution</i>
</llm>
<critical-context>
<i>Uses `npx @kayvan/markdown-tree-parser` to automatically shard documents by level 2 headings and generate an index</i>
</critical-context>
<flow>
<step n="1" title="Get Source Document">
<action>Ask user for the source document path if not provided already</action>
<action>Verify file exists and is accessible</action>
<action>Verify file is markdown format (.md extension)</action>
<action if="file not found or not markdown">HALT with error message</action>
</step>
<step n="2" title="Get Destination Folder">
<action>Determine default destination: same location as source file, folder named after source file without .md extension</action>
<action>Example: /path/to/architecture.md → /path/to/architecture/</action>
<action>Ask user for the destination folder path ([y] to confirm use of default: [suggested-path], else enter a new path)</action>
<action if="user accepts default">Use the suggested destination path</action>
<action if="user provides custom path">Use the custom destination path</action>
<action>Verify destination folder exists or can be created</action>
<action>Check write permissions for destination</action>
<action if="permission denied">HALT with error message</action>
</step>
<step n="3" title="Execute Sharding">
<action>Inform user that sharding is beginning</action>
<action>Execute command: `npx @kayvan/markdown-tree-parser [source-document] [destination-folder]`</action>
<action>Capture command output and any errors</action>
<action if="command fails">HALT and display error to user</action>
</step>
<step n="4" title="Verify Output">
<action>Check that destination folder contains sharded files</action>
<action>Verify index.md was created in destination folder</action>
<action>Count the number of files created</action>
<action if="no files created">HALT with error message</action>
</step>
<step n="5" title="Report Completion">
<action>Display completion report to user including:</action>
<i>- Source document path and name</i>
<i>- Destination folder path</i>
<i>- Number of section files created</i>
<i>- Confirmation that index.md was created</i>
<i>- Any tool output or warnings</i>
<action>Inform user that sharding completed successfully</action>
</step>
</flow>
<halt-conditions critical="true">
<i>HALT if npx command fails or produces no output files</i>
</halt-conditions>
</tool>
## Usage
Reference this tool with `@tool-shard-doc` to execute it.
## Module
Part of the BMAD CORE module.