Create structured journal entries with YAML frontmatter, template-based sections, and compliance validation. Use when user asks to 'create journal entry', 'new journal', 'document [topic]', 'journal about [topic]', or needs to create timestamped .md files in YYYY/MM/ directories. Supports four entry types: general journal entries, troubleshooting sessions, learning notes, and article summaries. Keywords: journal, documentation, troubleshooting, learning, article-summary, YAML frontmatter, template schemas, validation.