# Memory — Project Knowledge Base

<!-- This file accumulates domain knowledge across sessions.
     See .claude/rules/learn-tags.md for how entries are recorded. -->

## Notation Registry

| Variable | Convention | Anti-pattern |
|----------|-----------|--------------|
| | | |

## Estimand Registry

| What we estimate | Identification | Key assumptions |
|-----------------|---------------|-----------------|
| | | |

## Key Decisions

| Decision | Rationale | Date |
|----------|-----------|------|
| | | |

## Citations

<!-- One-liner corrections from [LEARN:citation] tags -->

## Anti-Patterns

| What went wrong | Correction |
|----------------|-----------|
| | |

## Code Pitfalls

| Bug | Impact | Fix |
|-----|--------|-----|
| | | |
