Record the owner's decisions for t1, t4 and t6

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tasks/t4_hopper_blocks_instead.md

@@ -1,12 +1,20 @@
 ---
 id: t4
 title: Hopper blocks instead of fixed-size hoppers
-status: Backlog
+status: Todo
 created: 2026-10-24
-updated: 2026-10-24T04:41:45Z
+updated: 2026-10-24T04:52:40Z
 tags: [discussion]
+order: 7
+report: |
+  (agent) Decided 2026-10-24 (docs/DESIGN.md); not built yet.
 ---
 
 ## Context
 
 - instead of buildings like the refiner which have a fixed size hopper, just make a block the same size as a wall tile that looks like grinding wheels where the user can place multiple side by side to create a wide hopper. the same thing should be done for the other buildings like that.
+
+## Subtasks
+
+- [ ] Grinder block (does what the Refiner does) and Saw block (Stone cutter), 1 block each; side by side they make a wider, faster hopper
+- [ ] Refiner and Stone cutter leave the build menu; built ones in old saves keep working