chore(memory): BDR-116 amendment (classifier) + EVAL-045 + journal/TODO/contract w4b — feat model-router wave 4-B

.claude/memory/decisions.md

@@ -1414,4 +1414,8 @@ Branch feature/user-writing-web-rules, UNMERGED (human gate).
 - **Amendment (2026-10-11, wave 3-B, commit 604a6c4)**: clause (2) superseded: the dialog carries CONTEXT (skill description = first sentence of its SKILL.md frontmatter, five YAML forms, hardened read: name allowlist, stat kind file, size cap, `clean()` Cc/Cf + code points; agent description from `agent.offer`, bounded cache; phase `about` line, new 120-char field on the 11 routing.json phases, kept in memory not on Route) and the REAL next model id + effort. Options Later / Keep / Change (T3 Later / Keep). Change = model (4 fixed alias labels with tier role) → effort among those the phases headed by that alias offer (ascending, ≤ 4, one → skipped, zero → Later) → scope; the pair maps to an existing PHASE (rows stay phase names; row's current phase wins a tie; same phase = Keep); a pair no phase offers = a new phase by hand. Other anywhere = Later + toast (no echo). A main-row change toasts the real decision + `/route switch on` hint on a held downgrade. Three lenses rejected inline-route rows and dialog phase edits (2 BLOCKERs). First real use: user moved security-auditor to `judge` (opus/xhigh) through it; floor aligned (`model: opus`, 2026-10-11). Links [[EVAL-044]].
 - **Amendment (2026-10-11, wave 3-C, commit cd8d72f)**: clause (6) extended: `/route forget <name|all|projects>` (composer only) clears decisions in the tracked file through the same writer: a name in every table (`confirmed`, `changed` → row restored to its recorded `from` when it is a string, the row still equals `to` and `from` is a known phase; `projects[*]` pruned), asked again at once; `all`/`projects` confirm through the engine dialog (Cancel first, anything else = cancelled) and hold the single-dialog slot; nothing written when nothing to forget; the answer names a restored row's file + values to realign (a floor aligned to the decision makes the census FAIL after the restore). No per-user decisions file (user: "seulement le forget"): another user inherits the shared memory and may forget. Residuals (security LOW/MEDIUM): raw error text in the answer, file fragments unsanitized in the answer, `floorFile` name not allowlisted, `__proto__` plan/apply mismatch, `changed.phases` restorable. Links [[EVAL-044]].
 - **Amendment (2026-10-11, wave 4-A, commit 68d7ea6)**: logging rule: `verbose` (boolean) logs TRANSITIONS only, built from the decision itself inside `safely` before `next`: main "fable/high → fable/xhigh (<phase>: <cause>[, <model cause>])" once per turn per transition (causes: skill /<name>, route tool, prompt rule, prompt floor, dispatch, sticky /route, session; model: upgrade, switch, fallback: <alias> down); one hand-off line per agent dispatch deduped per turn per (type, target) "main … → agent <type> <alias>/<effort> (row <phase>|explicit|fallback|frontmatter, row|explicit|engine)"; later agent effort moves; an answered-by anomaly (agents only, canonical ids, once per agent+model). The host prefixes the plugin name: new lines carry none. The four stream lines are gone. Residuals W3-A/B/C closed: failure texts to the log, file fragments cleaned at render, floorFile allowlisted, `__proto__` refused, changed scan = rows, dialog Change offers shipped phases only (`mem.filePhases` = validated seed layer), post-answer write failure keeps the key asked. Rejected: a `trace` level (unrequested surface); detecting agent moves at turn.step (decided at spawn). Links [[EVAL-044]].
-
+- **Amendment (2026-10-11, wave 4-B, commit e54a2b5)**: prompt classifier closes the main-loop gap (plain prompt, no skill, no agent, no route in force). Composer `prompt.submit`, trimmed text ≥ 12 chars not starting with `/`, no prompt rule matched, no sticky/turn/run/floor route → one `$.model.classify(sample, [design, analysis, coding, bookkeeping, chat])`, sample = whole text ≤ 2000 code points else head 500 + tail 1500, no `model` option (engine small model). Label → phase (design→plan, analysis→reflect, coding→implement, bookkeeping→apply, chat/unknown → nothing) written as the TURN route, EFFORT ONLY (no tier: main model never moves on a guess), may lower, replaced by any later route tool call or typed skill, ignored at a step whose engine effort ≠ session baseline (`engineBase`: a user `/effort` beats the guess). Bounded: race with `$.clock.sleep(3000)`; timeout/rejection count, user abort neither counts nor writes, every guard re-checked after the await (a route landing meanwhile wins); 3 failures in a row → pause `cooldownMinutes` (×60000, kept across `/clear`, cleared by `/route reload`, one toast + status marker ` · classifier: paused`); skipped while the haiku id is marked down or main runs on haiku. No dialog, no routing.json write on a classified route. Config key `classify` (default true, `pickSwitch`), `/route classify on|off` session toggle surviving a rebuild, `/route show` `classify:` field, status `route: classifier <phase>`, verbose line `(<phase>: classifier)`.
+- **Why**: user 2026-10-11: routing must also cover the main conversation when no skill or agent is invoked. Effort-only because a model flip on a 3-s guess would fight the breaker and the user's `/model`; turn-scoped because a guess must never outlive its prompt.
+- **Alternatives rejected**: first-use dialog on classified phases (the TODO line said so; a dialog per plain prompt is noise and the phase is already confirmed through T3); writing the guess into routing.json; classifying mid-turn or sub-agent prompts; unbounded await (robustness BLOCKER r1: the classify call sat on the critical path with no clock race); `classify` as a tracked-file writer (session toggle + config key instead).
+- **Gates**: plan r1 → r3 (simplicity CONCERNS(4), robustness FATAL(6) BLOCKER unbounded await, correctness CONCERNS(4); confirmation robustness CONCERNS(4)); feater DONE (423) + 1 round (trim, argumentHint, repeated undefined: 428, each mutation-proven); GATE 0 MET; verifier ECARTS(2) coverage → CONFORME on #2; security PASS (0 findings; LOW accepted: pasted text can steer one turn's effort up, README says so). Abort paths judged by reading (`[gated]` clarification). Residual: `smallModelBusy` checks `cfg.models.haiku` while classify uses the engine's default small model (mismatch only when the two differ). Live AC9 open.
+- **Refs**: contract `.claude/tasks/contracts/2026-10-11-model-router-w4b-classifier-1858.md`, plan r3 same slug. Links [[EVAL-045]], [[LRN-210]].