v0.2.27 — EDG acquaintance & multi-world mobile

Added

• entity_knowledge — @edg SSOT for holder acquaintance; depth-gated POV name masking
• party_sheet — roster panel with EDG-gated NPC names
• novel-mobile multi-world — world registry/slot, optional auth, E2E script

Changed

• knowledge_graph — EDG-based view (@knh deprecated)
• presentation / beat_prompt — acquaintance masking; prose POV (旁白「你」、內心才「我」)
• novel_mobile — per-world sessions, beat jobs, mobile UX fixes

See CHANGELOG.md for full notes.