BindAlias

Added

• diffState alias — captures a state diff mid-chain and posts it to the new agent_msg channel
• printScreen alias — grabs an async screenshot and posts base64 PNG to agent_msg
• agent_msg channel — structured message channel keyed by clientTick; same-tick state+screenshot entries merge automatically

Changed

• MCP: simplified snap parameter — snap (multi-entry array) replaced by snapDeferredTicks (single integer defer); screenshots moved from snap into printScreen alias
• MCP: JS bridge — extracts agent_msg screenshots as MCP image blocks, removes legacy multi-snap code

Fixed

• cfg auto-load — world-specific agent.cfg no longer wipes global bind-alias.cfg aliases
• deferred snap extra — recipes JSON from listRecipes now preserved in deferred snap envelopes
• 1.21.x alias parsing — divider4AliasArgs corrected from \ to /, fixing all BuiltinAliasWithArgs aliases (yaw, log, say, etc.) on 1.21.x branches