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Maven/CLAUDE.md
T
kami 29329b5f0e router: a Russian verb is a whole sentence, not thin evidence
The clarify gate thinned any one-word utterance to 0.3 confidence, which
trips the stage-3 gate and comes back as "не совсем поняла". That is an
English intuition. Russian packs subject, tense and gender into one word,
so "поужинал" is a complete report and "привет" a complete greeting, and
both got clarified.

thinSingleToken keeps the rule for bare nominals, where it is real ("вода"
is a fact-or-query coin flip), and spares two classes: a closed lexicon of
social and control singles, and any token carrying a verb ending. Both
tests are offline.

Fixture: false clarifies 3 → 2, intent-only 74.0% → 75.3%, full accuracy
unchanged at 70.1%, missed clarify still 1.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TrVSBKe3RFDF4fGYKWYQnX
2026-08-01 21:29:21 +04:00

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# CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Maven is a self-hosted, privacy-first voice assistant (Russian + English). Go daemons
talking over unix sockets; one resident small model for routing + phrasing; whisper.cpp STT, piper TTS.
Deploy target is a Ryzen laptop (homesrv) with Vulkan offload to the Vega iGPU (`n_gpu_layers: 99`,
compose passes `/dev/dri` + the render gid) — the resident model stays ≤1.7B either way.
**Resident model:** currently **Qwen3-1.7B** (`UD-Q4_K_XL`), stock — not yet the CPT'd one.
It replaced Qwen3.5-0.8B on 2026-07-31 because it measured better on both fixtures we have:
67.5% vs 59.7% intent-only on the 77-case RU routing fixture, and 20/27 vs 11-17/27 on the
talk fixture. See `MODEL-BAKEOFF-31-07-2026.md`. It is a Thinking variant, so `n_ctx` is 4096
— reasoning tokens need the room, and 4096 is what the scores above were measured at.
The **target** is still the locally CPT'd **Qwen3-1.7B** (Vikunja #122, training in flight).
Stock already speaks good Russian; what it gets wrong is the persona — it writes `я рад`,
masculine, where Maven needs `рада`. That is what the CPT is for.
**Do not bother with sub-500M models.** LFM2.5-230M and 350M were measured on 2026-07-31 and
both are unusable in Russian: the 350M routes at 5.2% (worse than guessing) and answers
"столица Франции?" with the invented non-word "Сторзит"; the 230M replies to Russian in
Spanish. Their strong published IFEval/BFCL numbers are English-only. Model files live in
`/mnt/hdd1/llms`, bind-mounted to `/opt/maven/models/llm` — which **shadows** the repo's
`models/llm/`, so the LFM2.5 gguf sitting there is not loaded by anything. Swapping the resident
model is a one-line change to `phraser.model_path` in `deploy/mavend.json`.
See `REARCH.md` for the target architecture, `DESIGN.md` for the folded design spec, and
`AGENTS.md` for local-preview + model-download recipes.
## Build & test
CGO daemons (`mavend`, `mavsttd`, `mavttsd`, `mavenclient`) need the vendored toolchain
and libs wired through the Makefile — **do not** call `go build` on them bare, use `make`:
```sh
make build # all 9 binaries
make build-web # single daemon (pure-Go ones: web/waked/poll/caldav build without CGO)
make test # go test -race across ./internal/... ./cmd/... with CGO env set
```
Run a single test (must carry the CGO env for packages that touch STT/TTS/voice):
```sh
CGO_CFLAGS="-I$(pwd)/deps/include -I$(pwd)/deps/whisper.cpp/ggml/include" \
CGO_LDFLAGS="-L$(pwd)/deps/lib -Wl,-rpath,$(pwd)/deps/lib" \
LD_LIBRARY_PATH="$(pwd)/deps/lib" \
deps/go/go/bin/go test -run TestName ./internal/router/
```
Pure-Go packages (`router`, `memory`, `mavweb`, …) run under a plain `go test ./pkg/`.
## The daemons (`cmd/`)
| Binary | Role |
|---|---|
| `mavend` | **Core.** Router, phraser, memory, reminders, digestion tick. Owns the DB + IPC socket. |
| `mavweb` | HTTP UI + PWA (`/dash`, `/history`, `/trace`, `/notifications`, `/tools`); WebAuthn auth. Connects to mavend's socket. |
| `mavsttd` | Speech-to-text (whisper.cpp, CGO). |
| `mavttsd` | Text-to-speech (piper subprocess). |
| `mavwaked` | Wake-word / VAD gate. |
| `mavenclient` | Voice loop client (mic → stt → core → tts). |
| `mavpoll` | Telegram long-poll reach. |
| `mavcaldav` | CalDAV calendar sync. |
| `mavmaild` | Mail reader (IMAP, read-only). Holds the IMAP password; core never sees it. |
Daemons are wired socket-to-socket, not linked. `internal/ipc` is the client/server wire
protocol; the config in `deploy/mavend.json` (with `${VAR}` env expansion from gitignored
`deploy/telegram.env`) sets socket paths, model paths, and the phraser/embedder blocks.
## Routing — read this before touching the router
`internal/router/` has TWO layered engines. **The LLM router is now the default and it is
on in deploy** — this section used to say it was wired `nil`, which stopped being true on
2026-07-31.
- **LLM router (the intended design, REARCH.md):** the resident Qwen3-1.7B (`llmrouter.go`)
emits GBNF-constrained structured JSON, and the SAME model phrases replies. Embedder is
demoted from a routing gate to a RAG hint. Wired at `voice.go:214` via
`pickLLMRouter(cfg.Voice.UseLLMRouter(), llmClient)`; the flag is `voice.llm_router`
(`config.go`), `DefaultLLMRouter` is **on**, and `deploy/mavend.json` sets it `true`.
- **Classifier cascade (the failure floor, not dead code):** `classifier.go` +
`embedder.go` nearest-neighbour over frozen seed phrases. It runs when the LLM router is
off, when there is no llama-server to talk to (`pickLLMRouter` logs that and degrades),
and on any per-turn LLM error. Do not delete it — routing by seed similarity is the known
cause of weak RU query handling, but a turn must never break on the model.
Cascade order: `stage0.go` exact-match fast-path → LLM router (when non-nil) → classifier
fallback. Any LLM error falls through to the classifier so a turn never breaks on the model.
Measured on the 77-case RU fixture (`MODEL-BAKEOFF-31-07-2026.md`): the classifier scores
36.8% full accuracy at p50 31ms; Qwen3-1.7B scores 67.5% intent-only / 72.7% through the
cascade at p50 ≈2.7s. Accuracy roughly doubled, latency is ~90× worse, and that trade was
accepted deliberately. `Confidence: 1.0` used to be hardcoded in `llmrouter.go`, so the LLM
path could never ask for clarification (6/6 refusal cases missed on the fixture) — Vikunja
#359. Fixed 31-07-2026 with structural signal (single-token utterance, keyless fact, act with
no allowlisted fn) feeding the same stage-3 gate the classifier path already had — see
`gateLLMDecision` in `router.go`. Note the second half of that bug: the LLM branch never
consulted `r.threshold` at all, so a correct low confidence would have been discarded anyway.
Re-measured on the fixture after the fix: **missed clarify 6/6 → 1**, at the cost of 3 false
clarifies and 2.6pt of full accuracy (72.7% → 70.1%, intent-only 67.5% → 74.0%). Two of the
three false clarifies are acts the model mis-routed and the gate caught — asking beats wrongly
executing, so the fixture and the daemon disagree about what is correct there. The third,
`"поужинал"`, was a real defect: the single-token rule was an English intuition and does not
transfer to Russian, where one word is routinely a whole sentence.
Narrowed 01-08-2026. `thinSingleToken` (`internal/router/singletoken.go`) still thins a bare
one-word nominal — "вода", "бэкап" — but spares two classes: a closed lexicon of social and
control singles ("привет", "спасибо", "стоп", "yes"), and any token carrying a Russian verb
ending (past tense, 2nd person, reflexive), because a verb already contains its subject. Both
tests are offline and cost nothing. Re-measured: **false clarifies 3 → 2, intent-only 74.0% →
75.3%, full accuracy unchanged at 70.1%, missed clarify still 1.** The two remaining false
clarifies are the act-with-no-allowlisted-fn arm of the gate, not this rule.
## LLM output contract
All phrasing paths emit `{"response":"...","mood":"..."}` (parsed in `replier_llm.go` and
`internal/phraser/llmphraser.go`), with fallback to plain text and the legacy
`{"body","summary"}`. Mood is a fixed enum. Router prompt is a separate contract:
`[{"intent":<enum>, key?, value?, text?, verb?}, ...]`, 7 intents (`fact, reminder,
note, query, act, chat, system`). `llm/check_prompt_parity.py` in the training
workspace enforces that the Go and relabelling prompts remain identical.
## Non-goals (hard constraints)
Not a nag, not autonomous. Maven's persona is **feminine** — Russian
self-reference must use feminine forms — `рада`, not `рад`; `поняла`, not `понял`. The owner
is male and is addressed informally: "ты", singular, never "вы"/"ваш" and never "он"/"его"
(she talks TO him, not about him). Pet names ("милый", "дорогой") are forbidden; his name
("Ками") is not. The eval enforces this: `CheckAddress`, `CheckFeminine` and `CheckCringe` in
`internal/phraser/eval/checks.go`, scored by `make eval-phrasing`.
**"Never phones home" is DEPRECATED** (owner's call, 2026-07-31). It used to be a hard
constraint and it is not one any more: a 0.8B — and a 1.7B — does not know enough to answer
world questions, so she needs to read external sources. What replaces it:
- **No telemetry, no cloud model, no third-party account.** That part never changes. Nothing
about Maven is reported to anyone, and inference stays on the box.
- **Local sources first.** Kiwix ZIMs on homesrv (Wikipedia, ifixit) before anything on the
network. Reading beats recalling for a small model, and a local read costs nothing.
- **External search is allowed and off unless configured**, like the weather and telegram
capabilities.
- **His notes and facts are never search input.** Looking up why the sky is blue and sending
his stored personal notes to an upstream engine are different acts. Only the utterance goes
out, never the persona block, history, or matched notes.
## Web UI conventions
Server-rendered pages share `cmd/mavweb/static/ui.css` (served at `/ui.css`) and the `nav`
partial (`navHTML` in `cmd/mavweb/main.go`, `{{template "nav" "<active-page>"}}`). No
per-page `<style>` beyond true one-offs. Wrap every table in `<div class=scroll>` so wide
data pans on a phone. Local preview + headless screenshot recipe is in `AGENTS.md`.
## Vikunja
This repo is project **Maven** (ID 2) in Vikunja. MCP: `http://localhost:9100/mcp` (or
`http://192.168.1.104:9100/mcp` from workpc). Feature/bug/deploy tasks go there.