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

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

docs/DESIGN.md

@@ -211,6 +211,17 @@ above, including:
   by default). The owner doesn't like it.
 - **Fog of war reveals by line of sight.** Unexplored ground is black with a soft edge; the sky
   and the surface start seen. The owner chose line of sight over a plain circle around the bot.
+- **Bars pile neatly, and a Bar rack stores them (t1).** Bars that come to rest snap to a tidy
+  brick pattern so piles have no air gaps; a Bar rack machine (the Silo for bars) takes them from
+  a belt or tube, counts them and lets them out with F. The owner wanted bar storage that doesn't
+  waste space, like stacked ingots in real life.
+- **Hopper blocks replace hopper machines (t4).** 1-block Grinder and Saw blocks each work what
+  lands on them and drop it below, so a wider row is a wider, faster hopper. The Refiner and Stone
+  cutter leave the build menu; built ones in old saves keep working. The owner wanted hoppers of
+  any width.
+- **The bag is the vacuum's control panel (t6).** Each bag row has separate pick-up and blow
+  marks; a chip on the tool card sets pick-up to everything, only marked, or the same as the
+  first click; R over a grain toggles its pick-up mark. The owner found the shared ticks confusing.
 
 ## Ideas not built yet
 

docs/agent-log.md

@@ -4,6 +4,13 @@ What agents have done, newest first. Add an entry for every piece of work: the d
 note or request it was for, what changed, the files touched, the tests run, and anything left
 open or not verified. Keep each entry short; the git history has the details.
 
+## 2026-10-24: decisions for t1, t4, t6 (Claude Code)
+
+- Options given in chat; the owner chose: t1 neat bar piles plus a Bar rack; t4 Grinder and Saw
+  blocks replace the Refiner and Stone cutter (old ones keep working); t6 the bag as the vacuum's
+  control panel with separate pick-up and blow marks. Recorded in `docs/DESIGN.md` and as
+  subtasks on each task. Nothing built yet.
+
 ## 2026-10-24: t8 Fog of war for unexplored areas (Claude Code, Codex)
 
 - Decided with the owner: revealed by line of sight; unseen is black with a soft edge.

tasks/t1_ingot_stacking_storage.md

@@ -1,12 +1,20 @@
 ---
 id: t1
 title: Ingot stacking and storage
-status: Backlog
+status: Todo
 created: 2026-10-24
-updated: 2026-10-24T04:41:45Z
+updated: 2026-10-24T04:52:56Z
 tags: [discussion]
+order: 8
+report: |
+  (agent) Decided 2026-10-24 (docs/DESIGN.md); not built yet.
 ---
 
 ## Context
 
 - stacking ingots is a little odd, they dont stack neatly. so putting them all in the same place means it will get full but have lots of air space. what can we do about this? WHat in real life might be the solution for storing ingots?
+
+## Subtasks
+
+- [ ] Bars that come to rest snap to a brick pattern, so piles have no air gaps
+- [ ] Bar rack machine: takes bars from a belt or tube, holds a set number, shows the count, F lets them out

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

tasks/t6_rework_vacuum_blower.md

@@ -1,12 +1,21 @@
 ---
 id: t6
 title: Rework the vacuum/blower tool
-status: Backlog
+status: Todo
 created: 2026-10-24
-updated: 2026-10-24T04:41:45Z
+updated: 2026-10-24T04:52:40Z
 tags: [discussion]
+order: 6
+report: |
+  (agent) Decided 2026-10-24 (docs/DESIGN.md); not built yet.
 ---
 
 ## Context
 
 - lets rework the vacuum/blower tool. the selecting, ticking, etc of the items for filtering and otherwise. its a little confusing and difficult to understand. lets ocme up with a simpler ui/ux, intuitive while still containing the same core functions like filtering what you pickup and drop and allowing pickup/drop all or filtered.
+
+## Subtasks
+
+- [ ] Bag rows get separate pick-up and blow marks (no more shared ticks)
+- [ ] Tool card chip: pick up everything / only marked / same as the first click
+- [ ] R over a grain toggles its pick-up mark; blowing uses the rows marked to blow