chore: Update physics shapes, minimap data and version table for 26.2

- BlockShapeData.json: add the 28 new sulfur/cinnabar blocks by copying
  shape entries from analogous blocks (stone, stone_slab, stone_stairs,
  stone_brick_wall, pointed_dripstone); state counts verified against the
  26.2 server blocks.json. PrismarineJS minecraft-data has no 26.x data
  yet, so these should be regenerated once it does.
- MinimapBlockColors.json: add new blocks with MapColor values taken from
  the decompiled 26.2 Blocks.java (COLOR_YELLOW / GOLD / COLOR_RED).
  Merged by hand because gen_block_color_map.py cannot parse the new
  BlockItemIds-based registration format yet.
- MinimapEntityCategories.json: add SulfurCube as hostile
  (MobCategory.MONSTER in EntityTypes.java, which now holds entity
  registrations instead of EntityType.java).
- AGENTS.md: add the 26.2 row to the version support table.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

MinecraftClient/Tui/MinimapEntityCategories.json

@@ -1,5 +1,5 @@
 {
-  "version": "26.1-rc-2",
+  "version": "26.2",
   "hostile": [
     "Blaze",
     "Bogged",
@@ -30,6 +30,7 @@
     "Skeleton",
     "Slime",
     "Stray",
+    "SulfurCube",
     "Vex",
     "Vindicator",
     "Warden",
@@ -164,4 +165,4 @@
     "WindCharge",
     "WitherSkull"
   ]
-}
+}