Email verification on registration #43

Background

Identified during OSS audit v2 of startupintel.

Problem Statement

Immediate active admin.

Proposed Solution

is_active=False until verify.

Acceptance Criteria

• Implementation complete
• Tests pass
• Documented in README or docs/

Files / Modules Affected

startupintel/api/routes/auth.py

Suggested labels: priority:medium, difficulty:intermediate, category:security
Milestone: v3.0-platform
OSS Audit: Master Backlog v2