diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 040fdaa..ba88356 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -54,13 +54,23 @@ jobs:
         run: go test ./internal/brain/rank -count=1
 
       - name: facts/audit self (lexicon consistency, no network)
-        run: |
-          ./bin/facts/audit self 2>/dev/null || echo "audit: not yet implemented; gate skipped"
+        run: ./bin/facts/audit self
 
-      - name: CGO via Zig (compile brain/search)
+      - name: CGO via Zig (compile brain/search + eval)
         run: |
           chmod +x bin/cgo/zig bin/cgo/zcc bin/cgo/zc++
           bin/cgo/zig go build -tags system_ladybug -o /tmp/brain-search ./bin/brain/search.go
+          bin/cgo/zig go build -tags 'system_ladybug,brain_eval' -o /tmp/brain-eval ./bin/brain/eval.go
+
+      - uses: actions/cache@v4
+        with:
+          path: ~/.cache/huggingface
+          key: ${{ runner.os }}-hf-potion-multilingual-128M
+
+      - name: recall@5 SoT (Zig bin/brain/eval.go)
+        run: |
+          uv run python bin/kb/index --rebuild --json
+          KB_ROOT="$PWD" /tmp/brain-eval --json
 
   release:
     name: Release (semver)
diff --git a/PLAN.md b/PLAN.md
index b9338e2..a271d9e 100644
--- a/PLAN.md
+++ b/PLAN.md
@@ -144,8 +144,8 @@ Common props on every node/edge: `root`, `confidence`, `evidence[]`, `how`,
 2. `go test ./internal/brain/rank` (cgo-free ranking + flag parser)
 3. python -m unittest discover -s bin/tools (includes published-docs SoT)
 4. `bin/facts/audit self` (lexicon internal consistency; `bin/facts/audit.go` is the D14 wrapper)
-5. `bin/kb/eval` (recall@5 ≥ 0.95). Local SoT is `bin/brain/eval.go` via Zig CGO.
-   CI SoT switch: [#19](https://git.produktor.io/eSlider/2dph/issues/19).
+5. `bin/brain/eval.go` via Zig (recall@5 ≥ 0.95). Python `bin/kb/eval` is an
+   explicit fallback, not the CI SoT.
 6. `bin/cgo/zig go build -tags system_ladybug` (compile search with zig cc; fetches pinned zig+libs).
 
 Feedback loop: every commit → PR → CI → green/gate → merge. Same discipline as
@@ -164,7 +164,7 @@ Feedback loop: every commit → PR → CI → green/gate → merge. Same discipl
 
 ## Gap to v1 (epic #16)
 
-Remaining: CI eval SoT. Board:
+Remaining: none for epic #16 (v1). Board:
 [epic #16](https://git.produktor.io/eSlider/2dph/issues/16),
 milestone [v1 detective brain](https://git.produktor.io/eSlider/2dph/milestone/12).
 Narrative: [docs/roadmap.md](docs/roadmap.md).
@@ -175,6 +175,6 @@ Narrative: [docs/roadmap.md](docs/roadmap.md).
 | 2 | [#17](https://git.produktor.io/eSlider/2dph/issues/17) | **in** — `--hop N` walks `FROM_FILE` → `HAS_VERSION` → `AUTHORED` (max 3). |
 | 3 | [#18](https://git.produktor.io/eSlider/2dph/issues/18) | **in** — `--with-facts` / `--facts-json` land `root=facts`; `--with-chats` indexes `var/chats/md`. WhatsApp sync is out of v1. |
 | 4 | [#15](https://git.produktor.io/eSlider/2dph/issues/15) | **in** — lever/loop documented (`search` → `get` → `audit`). |
-| 5 | [#19](https://git.produktor.io/eSlider/2dph/issues/19) | GitHub CI recall still runs Python `bin/kb/eval`. |
+| 5 | [#19](https://git.produktor.io/eSlider/2dph/issues/19) | **in** — CI recall SoT is `bin/brain/eval.go` via Zig. Python `bin/kb/eval` stays as an explicit fallback. |
 
 Does **not** block epic close: [#6](https://git.produktor.io/eSlider/2dph/issues/6) OCR, OQ1, OQ3, OQ4.
\ No newline at end of file
diff --git a/README.md b/README.md
index 70ea26a..fa01fb7 100644
--- a/README.md
+++ b/README.md
@@ -169,6 +169,9 @@ docker compose up brain-watch                  # auto re-index on change
 
 ## Related
 
+eSlider DevOps engineer practice: ops, OnlyOffice, and mail feed the facts
+root through `bin/facts/extract` (two-source pairing).
+
 - [go-second-brain](https://github.com/eSlider/go-second-brain) — the earlier
   Neo4j + Qdrant + Matrix RAG brain
 - [agent-skills](https://github.com/eSlider/agent-skills) — upstream
diff --git a/bin/tools/test_bin_layout.py b/bin/tools/test_bin_layout.py
index 88691b0..babd886 100644
--- a/bin/tools/test_bin_layout.py
+++ b/bin/tools/test_bin_layout.py
@@ -207,3 +207,25 @@ class BinLayoutTest(unittest.TestCase):
         search = (ROOT / "bin" / "kb" / "search").read_text()
         self.assertIn("bin/cgo/zig", search)
         self.assertNotIn("command -v gcc", search)
+
+    def test_ci_recall_sot_is_zig_brain_eval(self) -> None:
+        ci = (ROOT / ".github" / "workflows" / "ci.yml").read_text()
+        self.assertIn("bin/brain/eval.go", ci)
+        self.assertIn("system_ladybug,brain_eval", ci)
+        self.assertIn("/tmp/brain-eval", ci)
+        self.assertIn("KB_ROOT", ci)
+        self.assertNotIn("bin/kb/eval", ci)
+        self.assertNotIn("gate skipped", ci)
+        self.assertIn("./bin/facts/audit self", ci)
+
+    def test_eval_fragments_live_in_default_corpus(self) -> None:
+        """CI --rebuild indexes README/PLAN/docs/skills; fragments must be there."""
+        corpus = []
+        for rel in ("README.md", "PLAN.md", "AGENTS.md"):
+            corpus.append((ROOT / rel).read_text())
+        for d in ("docs", "skills"):
+            for p in (ROOT / d).rglob("*.md"):
+                corpus.append(p.read_text())
+        blob = "\n".join(corpus)
+        for frag in ("BM25", "DevOps", "LadybugDB"):
+            self.assertIn(frag, blob, f"{frag} must appear in default index corpus")
diff --git a/docs/roadmap.md b/docs/roadmap.md
index c4eced3..314d341 100644
--- a/docs/roadmap.md
+++ b/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.