Record the reading cost of the last chunk, and refresh item 167's figures

docs/reading-cost.md

@@ -470,3 +470,20 @@ Read most (opens and searches):
 - `.github/workflows/test.yml` 1
 - `cmd/fejkdata/main.go` 1
 - `compose.yaml` 1
+
+## Reading cost, chunk 2f68b5245844, finished 2026-10-10T10:55:47Z
+
+112728 new input tokens before the first commit.
+
+Read most (opens and searches):
+
+- `README.md` 9
+- `todo.md` 6
+- `docs/decisions.md` 5
+- `shipped_test.go` 2
+- `CHANGELOG.md` 1
+- `compose.yaml` 1
+- `data.go` 1
+- `fejkdata.go` 1
+- `inline.go` 1
+- `internal/datafiles/datafiles.go` 1

todo.md

@@ -292,7 +292,7 @@ Carries out the decision "The shipped data is Go packages a library imports by c
 
 ### 167. Lower the reading cost of the files a chunk reads most before its first commit.
 
-`reading-cost` on 2026-10-09: the last 5 chunks' median is 96842 new input tokens before their first commit, the 5 before them 79101. Read most over the last 5 (opens and searches): `README.md` 45, `todo.md` 24, `AGENTS.md` 23, `cmd/fejkdata/main.go` 23, `CHANGELOG.md` 21, `pick.go` 21, `path.go` 20, `env.go` 19, `fejkdata.go` 19, `arm.go` 18. The chunk shipping this item runs `reading-cost --reset`.
+`reading-cost` on 2026-10-10: the last 5 chunks' median is 112728 new input tokens before their first commit, the 5 before them 93957. Read most over the last 5 (opens and searches): `README.md` 47, `todo.md` 32, `CHANGELOG.md` 26, `docs/decisions.md` 23, `cmd/fejkdata/main.go` 21, `compose.yaml` 20, `node.go` 19, `testdata/shipped_shape.txt` 19, `AGENTS.md` 18, `arm.go` 17. The chunk shipping this item runs `reading-cost --reset`.
 
 ### 89. Fail `New` without `WithSeed`, naming the option, and seed the CLI from the system.