feat: add Redis 8.x command support and new socket.io handlers}
- Add hash per-field TTL commands (HGETEX, HSETEX, HGETDEL, HTTL, HPTTL, HEXPIRE, HPEXPIRE, HEXPIREAT, HPEXPIREAT, HPERSIST, HEXPIRETIME, HPEXPIRETIME) with command hints and socket.io handlers for get/set/bulk field TTL operations - Add CLUSTER SLOT-STATS handler for per-slot usage metrics (Redis 8.2+) - Add FT.HYBRID search handler combining text and vector similarity (Redis 8.4+) - Add DIGEST command hint and string-digest socket.io handler (Redis 8.4+) - Add MSETEX, XDELEX, XCFGSET command hints for Redis 8.2-8.6 - Add VSIM filter support for vectorset similarity queries - Add redis-version utility for server version parsing and feature gating - Expand BITOP hints with DIFF, DIFF1, ANDOR, ONE operations - Improve AI query prompt with Redis 8.x command documentation, language handling for non-English UI locales, and 4096-char prompt length limit - Bump version to v2026.4.349