Function writeAnalysisFile

writeAnalysisFile(
    filePath: string,
    frontmatter: AnalysisFrontmatter,
    content: string,
): void
Write an analysis markdown file with YAML frontmatter.

Creates parent directories as needed. The file is written atomically via temp-file-then-rename (see atomicWrite) to avoid partial writes on crash or interruption. Any existing file at the path will be overwritten.
Parameters
- filePath: string
  Absolute or relative path of the markdown file to write
- frontmatter: AnalysisFrontmatter
  Structured frontmatter metadata
- content: string
  Markdown body content (without frontmatter)
Returns void
Example
```
writeAnalysisFile('./analysis-output/2026-03-26/classification/significance-assessment.md', fm, body);
```
- Defined in utils/political-classification.ts:975