Refresh of the open-core distribution from the private tree.
Included since the previous snapshot:
- Mail module (ADR-158/159/160/169): composer, labels, scheduling,
attachments, reply-tokens, IMAP/SMTP bridge + migrations 079-083
- Crawler-readable SSR for /blog and public spaces (ADR-190):
blogSeo, publicDocsSeo, per-space SEO prefs, blog index/post pages
- Registration policy + referral/promo settings (ADR-183/188)
- Message translation + language detection (ADR-185)
- Reddit connector for the agent-tool surface
Excised from the public distribution (unchanged policy): infrastructure
topology and host config, internal ops scripts, DB cleanup snapshots,
business documents, throwaway debug scripts, and two private product
lines (SC-SIM simulator, personal one-off tools). Real host addresses
are replaced with placeholders; credential-shaped literals are redacted.
Frontend build verified green on this tree.
065f2edd23