validation

## Overview **This skill is MANDATORY after creating or modifying any Honeydew object.** Validation ensures: - The object compiles and executes without errors - Results are returned (not NULL or empty) - Values make business sense - Related objects are consistent with each other --- ## Validation by Object Type ### Metrics **Step 1: Execute the metric** Call `get_data_from_fields` with: - `metrics`: `["<entity>.<metric_name>"]` If the tool call fails (API error, permission denied, timeout), report the error to the user before proceeding. Do not confuse a tool error with suspicious data. **Step 2: Sanity checks** | Check | What to Look For | Action if Failed | | --------------- | ------------------------------------- | ----------------------------------------------------- | | Returns data | Not NULL, not empty | Check SQL syntax, entity references | | Magnitude | Reasonable for business context | Verify calculation logic | | Sign | Positive for revenue/counts (usually) | Check for inverted logic | | Related metrics | Parts sum to whole | Query related metrics together and verify consistency | | Ratios | Between 0-100% (usually) | Check numerator and denominator metrics independently | **Step 3: Cross-validation** If the new metric is a fi...