Implement item cachine for 26.3

README.md

@@ -48,9 +48,11 @@ the next manual start, rather than triggering an automatic reconnect.
 
 The 26.3 client now handles AuthMe, chat commands, chunk/world-state caching,
 modern block/item/entity data, entity tracking, inventory/component sync,
-path-following movement (`1goto x y z`), inventory draining (`1drain`), and the
-crop harvest/replant loop (`1farm crops`). Other inventory/window actions and
-the farming/trading jobs remain disabled until their 26.3 packets are migrated.
+path-following movement (`1goto x y z`), inventory draining (`1drain`),
+normal/trapped-chest caching (`1cache`, also run by crop farming at the
+inventory threshold), and the crop harvest/replant loop (`1farm crops`). Other
+inventory/window actions and farming/trading jobs remain disabled until their
+26.3 packets are migrated.
 The default server is `127.0.0.1`; set `SERVER` explicitly only when you
 intentionally want another server.
 
@@ -72,10 +74,10 @@ would be ran like `1farm wood` or `1pos`.
 The exception are the below public commands, they can optionally be prefixed with `!`
 and all bots will run the command.
 
-The current 26.3 command path handles public chat. Private-message routing is
-not migrated yet. Verified commands are `!ping`, `!pos`, `!loaded`, `!info x y
-z`, `!inv` (basic slot/count data), `1drain`, addressed path movement such as
-`1goto x y z`, and `1farm crops`. The command catalog below is retained from
+The current 26.3 command path handles public chat and direct messages, replying
+in the same channel. Verified commands are `!ping`, `!pos`, `!loaded`,
+`!info x y z`, `!inv` (basic slot/count data), `1cache`, `1drain`, addressed
+path movement such as `1goto x y z`, and `1farm crops`. The command catalog below is retained from
 the legacy bot; other inventory actions, arbitrary block interaction, and the
 other farming/trading commands are not yet available on 26.3. Common item
 components (names, damage, enchantments, book