# Task ID: 83

**Title:** Implement Section Drill-Down for Prompts

**Status:** cancelled

**Dependencies:** 82 ✓

**Priority:** high

**Description:** Extend read_prompts to support section parameter for drilling into specific sections produced by proxymodel stages.

**Details:**

Modify the read_prompts handler in `src/mcplocal/src/router.ts`:

```typescript
// In the read_prompts tool handler
if (args.section) {
  // Look up section in the processed result
  const sectionId = args.section;
  const cachedResult = this.sectionCache.get(promptName);
  if (cachedResult?.sections) {
    const section = findSection(cachedResult.sections, sectionId);
    if (section) {
      return { content: [{ type: 'text', text: section.content }] };
    }
    return { content: [{ type: 'text', text: `Section '${sectionId}' not found` }], isError: true };
  }
}

// Helper to find section by ID (supports nested sections)
function findSection(sections: Section[], id: string): Section | null {
  for (const s of sections) {
    if (s.id === id) return s;
    if (s.sections) {
      const nested = findSection(s.sections, id);
      if (nested) return nested;
    }
  }
  return null;
}
```

Also add a sectionCache Map to store processed results with their sections for drill-down.

**Test Strategy:**

Integration tests: read_prompts with section parameter returns correct section content, nested section lookup works, missing section returns error, section cache populated after initial processing.