row 66 r4: BUILD.md notes the rebase onto 29ce1e360 after rows 195, 213 and 231 (#1559)

agents/sage/work/queue-66/BUILD.md

@@ -170,3 +170,11 @@ request went out. 212 added `packages/library/src` to `COPY_PATHS` and a library
 `stack-copy.test.mjs` file list. None of the four picks had a conflict. Every file's patch-id equals the 4ced5e63d
 build's except `scripts/stack-copy.sh`, where the only change is the hunk's context line
 (`packages/queue/src packages/library/src`). Row 66's two added lines are the same.
+
+Rebased again on 29ce1e360, after rows 195, 213 and 231 landed, as branch `sage/row66-r4c` (r4b stays at
+49ad61963). Two of row 66's paths moved: `adapters/README.md` and `docs/TOOLS.md`. TOOLS.md merged without a
+conflict. In adapters/README.md, row 213 rewrote the skill-cap paragraph, because `claude` now gets the prompt
+as a file. The merge keeps 213's paragraph whole and adds row 66's "The unslop check (row 66)" section after
+it. Row 66's old cap sentence is dropped, since it described the argument limit that 213 removed. Every other
+path has the same blob as on r4b. Row 213 also changed the harness and both adapter scripts, so all of row 66's
+harness tests run whole again on this base before the request.