db-diagramlisted

# Database ER Diagram Generator I'll help you generate comprehensive Entity-Relationship diagrams from your database schema, supporting multiple ORMs and output formats. Arguments: `$ARGUMENTS` - schema files, output format (mermaid/plantuml/dbml), or ORM type ## Token Optimization This skill uses diagram generation-specific patterns to minimize token usage: ### 1. Schema Snapshot Caching (900 token savings) **Pattern:** Cache parsed schema structure to avoid re-analysis - Store schema in `db-diagram/schema-snapshot.json` (24 hour TTL) - Cache: tables, columns, relationships, constraints - Compare checksum on subsequent runs (100 tokens vs 1,000 tokens fresh) - Regenerate only if schema changed - **Savings:** 90% on repeat diagram generations ### 2. Early Exit for Unchanged Schemas (95% savings) **Pattern:** Detect schema changes and return existing diagram - Check schema file mtimes vs diagram mtime (50 tokens) - If schema unchanged: return existing diagram path (80 tokens) - **Distribution:** ~60% of runs are "view diagram" on unchanged schema - **Savings:** 80 vs 2,000 tokens for diagram regeneration checks ### 3. Template-Based Diagram Generation (1,500 token savings) **Pattern:** Use Mermaid/PlantUML templates instead of creative generation - Standard templates for entity syntax, relationship arrows - Predefined formats for common diagram types - No creative diagram design logic needed - **Savings:** 85% vs LLM-generated diagram syntax ### 4. Bash-Based Diagram R