[data] SSOT enforcement — platform-stats.json as single source of truth for all numbers

[enioxt]

TASK-122 (new)

Created platform-stats.json as the SSOT for all platform statistics. All pages, reports, and docs MUST reference this file or the live API — never hardcode numbers.

Completed:

• Created frontend/public/updates/platform-stats.json
• Fixed 14 data errors across 9 files (141M→9.2M, MIT→AGPL, etc)
• Verified all numbers against live API (11/11 match)

Remaining:

• Frontend components should fetch from platform-stats.json or API
• Pre-commit check detects stale numbers (data accuracy check in pre-commit v2)
• Script to auto-update platform-stats.json from API periodically

Files: frontend/public/updates/platform-stats.json
Priority: P1
Area: Data Governance