docs: record v1 detective epic and remaining gaps. (#28)

Read path and MCP are in; write, hops, corpus, and CI eval are still open. Board is Gitea epic #16.

docs/README.md

@@ -5,6 +5,7 @@ related:
   - docs/runbook.md
   - docs/design.md
   - PLAN.md
+  - docs/roadmap.md
 ---
 
 # 2dph docs (Diataxis)
@@ -16,6 +17,7 @@ Evidence-first knowledge graph. Facts need proof or they are
 |------|-----|
 | tutorial / howto | [runbook](runbook.md) — run anywhere (uv, Go, Docker) |
 | explanation | [design](design.md) — two roots, deduction, D17/D20/D18 |
+| explanation | [roadmap](roadmap.md) — gap to v1 (epic #16) |
 | howto | [picoclaw](picoclaw.md) — MCP agent profile |
 | howto | [reasoner](reasoner.md) — CPU bake-off (D18) |
 | reference | [PLAN.md](../PLAN.md) — decisions D1–D21 |
@@ -26,9 +28,11 @@ Python write sidecar, **D14** `bin/{subject}/{method}.go`, **D15** Gitea origin,
 
 Search: `bin/brain/search.go "query"` (HTTP: `bin/brain/serve.go` —
 `/health` `/search` `/get` `/stats` `/audit` `/ingest`). `--hop` is
-not a walk; the flag errors until File/FROM_FILE edges exist.
+not a walk; the flag errors. Schema has `FROM_FILE`; search does not
+use it ([#17](https://git.produktor.io/eSlider/2dph/issues/17)).
 
-Work board: [Gitea issues](https://git.produktor.io/eSlider/2dph/issues).
+Work board: [Gitea issues](https://git.produktor.io/eSlider/2dph/issues)
+([epic #16](https://git.produktor.io/eSlider/2dph/issues/16)).
 PRs and CI: GitHub [`eSlider/2dph`](https://github.com/eSlider/2dph).
 
 Published docs live here and match live commands.

docs/design.md

@@ -4,6 +4,7 @@ status: current
 related:
   - docs/README.md
   - docs/runbook.md
+  - docs/roadmap.md
 ---
 
 # Design — facts, info, deduction
@@ -33,8 +34,9 @@ bin/brain/search.go "question"
      is not evidence of absence; `--no-web` / `--root` skip it)
 ```
 
-`--hop` is not implemented yet (needs File/FROM_FILE edges). The flag is an
-error; it is not a graph walk.
+`--hop` is not implemented. `FROM_FILE` / `HAS_VERSION` exist in schema;
+search does not walk them ([#17](https://git.produktor.io/eSlider/2dph/issues/17)).
+The flag is an error; it is not a graph walk.
 
 ## Who / What / How / Where / When + evidence
 
@@ -94,4 +96,7 @@ Pluggable OpenAI-compatible URL. RAM: `Qwen/Qwen3.5-9B`. Quality:
 `prism-ml/Bonsai-27B-gguf` or `Qwen/Qwen3.6-27B`. No official Qwen3.6-9B.
 CPU sidecar: compose profile `reasoner` (`OLLAMA_NUM_GPU=0`,
 `127.0.0.1:11435`). Bake-off: `bin/reasoner/bakeoff.go`. Weights stay out
-of the 2dph image. See [docs/reasoner.md](reasoner.md).
+of the 2dph image. See [docs/reasoner.md](reasoner.md).
+
+Gap to v1 (write, hops, corpus, agent loop): [roadmap](roadmap.md),
+[epic #16](https://git.produktor.io/eSlider/2dph/issues/16).

docs/roadmap.md

@@ -0,0 +1,67 @@
+---
+type: explanation
+status: current
+related:
+  - PLAN.md
+  - docs/design.md
+  - docs/runbook.md
+---
+
+# Gap to v1 — detective brain
+
+Goal: a brain that does not assert without proof. Search is deduction
+(`facts` ≥2 sources → `info` → `web`). `confirmed` only from the facts root.
+
+**v1 is a living graph the agent can write and walk**, not “more RAG”.
+
+Epic: [Gitea #16](https://git.produktor.io/eSlider/2dph/issues/16).
+Milestone: [v1 detective brain](https://git.produktor.io/eSlider/2dph/milestone/12).
+Decisions: [PLAN.md](../PLAN.md).
+
+## In (do not reopen)
+
+Read path Go + Zig CGO (D21). HTTP + OpenAPI + MCP (D20). PicoClaw compose
+profile + CPU reasoner (D18). Mail sync → import → rebuild. D14 shebangs.
+Compose `api` (no CPython) / `index` (Python write). Issues #1–#5, #7–#13.
+
+`POST /ingest` is a rebuild **hint**. `add` is not implemented.
+
+## Blockers
+
+```
+question
+    │
+    ├─ FTS + HNSW          ← in
+    ├─ facts / info roots  ← in
+    ├─ web (D17)           ← in
+    ├─ Cypher hop          ← #17  schema yes, search no
+    ├─ brain/add ACID      ← #14  rebuild only
+    └─ facts+chats corpus  ← #18
+```
+
+1. **[#14](https://git.produktor.io/eSlider/2dph/issues/14) write** —
+   `bin/brain/index.go --rebuild` (Python `kblib`). No incremental
+   `brain/add`. Watch/mail/git cannot become facts “now”.
+2. **[#17](https://git.produktor.io/eSlider/2dph/issues/17) hops** —
+   `Leaf-[:FROM_FILE]->File-[:HAS_VERSION]->Commit-[:AUTHORED]->Person`
+   exists; `--hop` still errors. Without a walk, D9/D10 are paper.
+3. **[#18](https://git.produktor.io/eSlider/2dph/issues/18) corpus** —
+   rebuild loads repo markdown + mail as `info`. `facts/extract` pairing
+   and `bin/chats` are not indexed. WhatsApp is a stub. PII stays in `var/`.
+4. **[#15](https://git.produktor.io/eSlider/2dph/issues/15) lever/loop** —
+   2dph is the lever (`search` → `get` → `audit`). PicoClaw is the loop.
+   Document the contour in-repo; CPU turns need a large context window.
+5. **[#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
+contradiction resolution, OQ3 duckdb-md export, OQ4 YAML-first leafs.
+
+## Close epic #16 when
+
+- facts+info can be written without a full rebuild for every leaf
+- `--hop` stops erroring and runs a Cypher path from search hits
+- ops pairing + chat import land as leafs on rebuild
+- MCP tool order is documented and still gated by tests

docs/runbook.md

@@ -55,6 +55,7 @@ bin/brain/stats.go
 ```
 
 `--hop` is not implemented. Empty web results are `throttled`, not absence.
+Gap to v1: [roadmap](roadmap.md) / [epic #16](https://git.produktor.io/eSlider/2dph/issues/16).
 
 Ladybug 0.19: never `DROP INDEX` FTS/VECTOR (ghost catalog). Fresh indexes =
 delete `var/kb.lbug` then `--rebuild`.