Silo: pixel-art version for the pixel look

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

docs/agent-log.md

@@ -4,6 +4,22 @@ 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.
 
+## 2026-10-23: pixel-art silo for the pixel look (Claude Code, with Codex)
+
+Note: "the silo art looks the same for both pixelated graphiocs and smooth."
+
+- `src/render/machines.js`: `drawSilo` is the smooth (illustrated) version as before; in the
+  pixel look `drawSiloPixel` draws it grain by grain: a drum shaded by column with rib rows and
+  ladder rungs, a cone to the slide gate, legs, the roof hatch with its lid, and the sight glass
+  filling in the contents colour. Codex's first version read poorly (dark side columns made
+  the drum look narrow); Claude redrew the grain layout.
+- `tools/scenes/silo.js` (run after `clear-sky.js`): three silos, empty, half sand, nearly full
+  copper ore with the gate open. Shots `shots/silo-*.png` at zoom 6 and 12; smooth shots match
+  the before shots pixel for pixel. `docs/DESIGN.md`, `docs/PROJECT_MAP.md`.
+- Tests: all 11 headless suites and `play.py` (129) pass. `t_smooth.py`'s half-resolution check
+  failed twice on the slow fallback at load ~5 (known flaky; it passed in the previous task).
+- Open: nothing.
+
 ## 2026-10-23: world sounds are local (Claude Code, with Codex)
 
 Note: "there is a sound effect that seems to happen randomly but constantly… maybe the sound