ci: recall@5 SoT is Zig bin/brain/eval.go (#19) (#32)

* ci: recall@5 SoT is Zig bin/brain/eval.go.

GitHub Actions rebuilds the repo corpus and runs the Go eval gate
instead of Python bin/kb/eval. Audit self is a hard fail (Gitea #19).

* ci: point eval at the checkout and keep DevOps in the corpus.

/tmp/brain-eval cannot walk up to var/kb.lbug; KB_ROOT is required.
Recall fragments must exist in README/docs so a repo-only rebuild gates.

docs/roadmap.md

@@ -26,11 +26,18 @@ Compose `api` (no CPython) / `index` (Python write). Issues #1–#5, #7–#13.
 [#15](https://git.produktor.io/eSlider/2dph/issues/15) lever/loop.
 [#14](https://git.produktor.io/eSlider/2dph/issues/14) `bin/brain/add.go` /
 `POST /ingest` (Python `kblib.add_leafs`; no Go upsert port).
+[#17](https://git.produktor.io/eSlider/2dph/issues/17) `--hop N` walks
+FROM_FILE / HAS_VERSION / AUTHORED.
 [#18](https://git.produktor.io/eSlider/2dph/issues/18) `--with-facts` /
 `--with-chats` on rebuild (WhatsApp out of v1).
+[#19](https://git.produktor.io/eSlider/2dph/issues/19) CI recall SoT =
+`bin/brain/eval.go` via Zig.
 
 ## Blockers
 
+None for epic #16. v2: [#6](https://git.produktor.io/eSlider/2dph/issues/6) OCR,
+OQ1 contradiction resolution, OQ3 duckdb-md, OQ4 YAML-first leafs.
+
 ```
 question
     │
@@ -42,9 +49,6 @@ question
     └─ facts+chats corpus  ← in
 ```
 
-1. **[#19](https://git.produktor.io/eSlider/2dph/issues/19) CI eval** —
-   recall SoT should be `bin/brain/eval.go` via Zig, not Python `bin/kb/eval`.
-
 ## Not v1
 
 [#6](https://git.produktor.io/eSlider/2dph/issues/6) OCR (OQ2), OQ1
@@ -52,5 +56,4 @@ contradiction resolution, OQ3 duckdb-md export, OQ4 YAML-first leafs.
 
 ## Close epic #16 when
 
-- MCP tool order is documented and still gated by tests
-- CI recall SoT is `bin/brain/eval.go` via Zig
+Children #14, #15, #17, #18, #19 are closed. MCP tool order stays gated by tests.