Security & Privacy (Pre-flight)

Use when

• Adding/reading/writing user/workspace data.
• Touching identity/auth, permissions, Firebase rules, or external APIs.
• Adding logging, analytics, telemetry, or error reporting.

Workflow

1. Identify data: what fields are PII, where stored, retention expectations.
2. Identify trust boundaries: browser ↔ Firebase/backend; who can call what.
3. Minimize & redact: remove unnecessary fields; ensure logs/errors redact secrets/PII.
4. Validate inputs at the edge; keep Domain pure.
5. Confirm least privilege: tokens, rules, and access paths.

Output checklist

• No secrets in repo, fixtures, or logs.
• No PII in logs/errors/templates.
• Clear authorization point (not scattered across UI).
• Deletion path does not leave access holes.