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evo-nasa-budget-recovery

Analyzes NASA budget workbook mathematical structure to recover missing ??? values via constraint propagation across sheets (row sums, YoY percentages, directorate shares, growth analysis).

tasks-evolved/xlsx-recover-data/environment/skills/evo-nasa-budget-recovery/SKILL.md

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Sep 10, 2026
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Apache-2.0

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# evo-nasa-budget-recovery

Recovers missing ??? values in multi-sheet NASA budget Excel files.

## Relationships Detected
1. **Row sums**: Budget sheet Total col = sum of directorate cols
2. **YoY %**: (current - previous) / previous * 100, rounded to 2 decimals
3. **Shares %**: directorate_val / total * 100, rounded to 2 decimals
4. **Growth Analysis**: CAGR, 5-year change, average annual budget
5. **Cross-sheet**: Budget values recoverable from YoY + previous year

## Usage

```python