33 lines
5.9 KiB
Markdown
33 lines
5.9 KiB
Markdown
# CONTRACT — model-router-w4b-classifier
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- date: 2026-10-11 | flow: feat | branch: feature/model-router-w4
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- status: active
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## REQUEST (verbatim — IMMUTABLE)
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okm j'aimerais que tu corrige donc les residus techniques, et aussi que tu fasse cette wave optionnelle du classifieur. [earlier, same day: "est-ce quil y a une comande pour clear…"; "tu me dit le routing de tout skills et agents, mais c'est valable aussi pour la conversatio principale ? Si tu invoaue ni skill ni agebt il faut que ca route aussi on est d'accord ?" → orchestrator: the plain conversation routes only through prompt keywords, ultrathink, derived orchestrate and the route tool; the missing piece is the planned haiku classifier on each typed prompt → user chose it]
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## CLARIFICATIONS
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(pass A: none — the W1 plan § W3.2 and the 2026-10-11 exchange define outcome and scope)
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Q: public shape (after three lenses, orchestrator default, user may veto): labels `design | analysis | coding | bookkeeping | chat` mapped to plan / reflect / implement / apply / none; the classified phase becomes the TURN DEFAULT route carrying its EFFORT ONLY (never a model move), and only when NO route is in force (no typed skill, no run slot, no route tool, no sticky `/route`, no floor, no keyword rule, not mid-turn, composer only); no first-use dialog on it (visibility: status line `route: classifier <phase>` and the transition line with `/route verbose on`); `classify` is a machine config key (default `true`, `"classify": false` in `~/.claude/model-router.json` turns it off) with a session toggle `/route classify on|off`; the call is bounded to 3 s and pauses for `cooldownMinutes` after 3 failures; one small-model call per typed prompt of ≥ 12 characters [stated 2026-10-11]
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Q: the abort paths (`next.signal.aborted` first in the catch and after the await; classify's own `aborted` cause not counted) cannot be driven by the kit (no abortable dispatch, a throwing bottom hook becomes "no implementation") / A: judged by reading; the live check covers the rest [gated 2026-10-11]
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## ACCEPTANCE CRITERIA
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1. On a composer `prompt.submit` with `classify` on, not mid-turn, a trimmed text ≥ 12 chars not starting with `/`, no prompt rule matched and NO route in force on main (no sticky, turn, run or floor), the mod calls `$.model.classify(<first 500 + last 1500 chars>, [design, analysis, coding, bookkeeping, chat])` once, with no `model` option, and writes the turn route `{ effort }` of the mapped phase with source `classifier` (`chat` or an unknown label → nothing); it never runs for a sub-agent prompt, a non-composer origin (so never under `-p`), mid-turn, with the mod off, with `classify` off, when a rule matched, or when a route is in force. One kit test per clause (a bottom `model.classify` mock).
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2. The classified route is turn-scoped (gone at `turn.complete`), carries the effort only (the main model never moves because of it: no tier), may lower the effort (coding → medium, bookkeeping → low), is replaced by any later route tool call or typed skill in the turn, and is ignored at a step whose engine effort differs from the session's baseline (a user `/effort` beats it). One kit test per clause.
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3. Bounded and fail-safe: the call races a 3 s `$.clock.sleep` (timeout → no route, counts as a failure); a user interrupt (`next.signal.aborted`) neither counts nor writes; every guard is re-checked after the await (a route landing meanwhile wins); a rejection or timeout counts, three in a row pause the classifier for `cooldownMinutes` (×60000, kept across `/clear`, cleared by `/route reload`) with one toast and a status marker, a settled answer resets the counter; an unknown label neither warns nor counts; the classifier is skipped while the haiku id is marked down or the main loop runs on haiku. The prompt always proceeds. One kit test per clause.
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4. No dialog and no file write: a classified route opens no first-use dialog and never writes routing.json. One kit test (no `ui.ask`, no `fs.write` on a classified prompt).
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5. Config and command: `classify` is a Config key (default `true`) read from the machine override through `pickSwitch` (invalid → default + one log); `/route classify on|off` is a session toggle (composer only) that survives a rebuild like `switch`/`verbose`; `/route show` prints `classify: on|off` on the `router:` line; the argumentHint lists it. One kit test per clause.
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6. Visibility: the status line reads `route: classifier <phase>` and the main transition line "(<phase>: classifier)" (with verbose on). One kit test per clause.
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7. Kit suite, mods suite, validate and census green.
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CHECK: cd mods/model-router && out="$(claude plugin test . 2>&1)" && printf '%s\n' "$out" | grep -qE '[0-9]+ pass' && ! printf '%s\n' "$out" | grep -qE '[1-9][0-9]* fail' && claude plugin validate . 2>&1 | grep -q 'passed' && cd ../.. && make test suite=lib/tests/mods.test.sh 2>&1 | grep -q 'all suites green' && bash lib/tests/effort-routing.test.sh >/dev/null 2>&1 && echo W4B-GREEN
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EXPECT: W4B-GREEN
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EVIDENCE: MET exit=0 marker-found :: W4B-GREEN
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8. Docs: README (`classifier` paragraph in the model-router section: what, cost, `/route classify`), USAGE (`/route` row + one sentence in "Niveau d'effort"), CHANGELOG Unreleased Added, `lib/effort-shift.md` (≤ 2 lines).
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CHECK: grep -qi 'classif' README.md && grep -qi 'classif' USAGE.md && grep -qi 'classif' CHANGELOG.md && grep -qi 'classif' lib/effort-shift.md && echo W4B-DOCS
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EXPECT: W4B-DOCS
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EVIDENCE: MET exit=0 marker-found :: W4B-DOCS
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9. Live check (orchestrator + user, after the gates, `[gated]`): a few plain prompts typed in the terminal, each with the label it got (status line `route: classifier <phase>`, transition line with verbose on); drop `bookkeeping` if it misfires.
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## FILE SCOPE
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mods/model-router/hooks/register.ts, mods/model-router/hooks/register.test.ts, README.md, USAGE.md, CHANGELOG.md, lib/effort-shift.md, lib/tests/effort-routing.test.sh (only if a lock needs it)
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