Auto-Shield Reborn

Fixed

• LivingEntity.swing(InteractionHand, boolean) is GONE at 26.3-snapshot-7 -- a hard compile break in the auto-block mixin, which swings the shield hand as block feedback. Both the 1-arg and 2-arg overloads were removed; the only remaining form is swing(hand, SwingAnimation, sendToSwingingEntity). Now emitted per version by the codegen (compat.swing_anim, >= 26.3): 26.3+ passes the shield's own getInteractAnimation() -- a block is a use-path action, which is the animation vanilla threads through its own interact sites -- and every earlier cell keeps the plain 2-arg call. The sendToSwingingEntity flag stays true either way: this mixin runs server-side and the blocking player should see their own swing.

Changed

• Fabric 26.3 cell moved to MC 26.3-snapshot-7 (from snapshot-6): fabric-api 0.156.1+26.3 -> 0.156.2+26.3, resource pack_format 94 -> 95 (bumped in _codegen/compat.py resource_format, the mod's single source for that value), exclusive window [26.3-alpha.6, 26.3-alpha.7) -> [26.3-alpha.7, 26.3-alpha.8). Every 26.3 snapshot bumps pack_format by one, so each jar stays snapshot-exclusive. ModMenu stays on 21.0.0-alpha.1 (still the 26.3-line major). No other cell changed.

Notes

• The other snapshot-7 breaking surfaces do not touch ASR: the trailing Prediction argument on LivingEntity.drop(ItemStack, boolean) / Inventory.placeItemBackInInventory (ASR neither drops nor returns items), the client-side LocalPlayer.drop(boolean) return-type change, the InteractionResult.SwingSource CLIENT/SERVER -> PREDICTED/SERVER_ONLY rename (ASR uses only the plain InteractionResult constants), and the 32 new concrete slab/stair blocks plus the filled-map colour component removals.