Merge the second-person gender check

PHRASING-EVAL-31-07-2026.md

@@ -105,11 +105,14 @@ that never says food.
 
 ## Broken, found, not fixed
 
-1. **`checkFeminine` only catches half the constraint.** It scans for masculine
-   self-reference and passed 15/15 both runs — but three messages address the *owner* in
-   the feminine: "ты давно не отдыхал**а**", "он не ел". The owner is a man. The check has
-   no second-person gender test, so this scores clean while being exactly the persona
-   failure the constraint exists to prevent. This is the most important gap in the harness.
+1. ~~**`checkFeminine` only catches half the constraint.**~~ **Fixed** (#381). It scanned for
+   masculine self-reference only, so three messages that addressed the *owner* in the feminine
+   ("ты давно не отдыхал**а**") scored clean. There is now a second check, `hisgender`: a
+   feminine past-tense verb (-ла/-лась) in a sentence addressed to him ("ты", "тебе", "твой")
+   fails, unless the verb is hers ("я заметила", "напомнила тебе"). It is a suffix rule, not a
+   parser — see the comment in `checks.go` for what it misses. A fresh 15-case run after adding
+   it scored **12/15** with `hisgender` 15/15; the model did not repeat the feminine address in
+   that sample, and the check is pinned by unit tests on the recorded bad strings instead.
 2. **Grammar is not checked at all, and it is bad.** `"Он не ел 11 дней"` (it was 11 hours),
    `"Сонуждились 7 дней"` (not a word), `"Они забыли воду"` (wrong person entirely). Every
    one of these passes all six checks. The fixture measures properties, not fluency, and at
@@ -125,8 +128,7 @@ that never says food.
 
 ## Next steps
 
-1. **Add a second-person gender check** to `checks.go`. Finding 1 above. Until it exists the
-   feminine column means less than it looks like.
+1. ~~**Add a second-person gender check**~~ — done, `hisgender` in `checks.go` (#381).
 2. **Decide whether the fallback should count as a pass.** Right now `Score` cannot tell a
    model answer from a fallback. Either mark fallback bodies in `PhrasedNudge` or count them
    in their own column. Without that, any future prompt change can score well by failing

internal/phraser/eval/checks.go

@@ -17,10 +17,14 @@ const (
 	CheckFeminine = "feminine" // her self-reference is feminine (hard constraint)
 	CheckCringe   = "cringe"   // DESIGN.md § Non-goals, "not a relationship"
 	CheckOnTopic  = "ontopic"  // says the thing the rule is about
+
+	// CheckHisGender — the other half of the persona rule: SHE is feminine, HE
+	// is male. "ты давно не отдыхала" addresses the operator as a woman.
+	CheckHisGender = "hisgender"
 )
 
 // CheckNames — report order.
-var CheckNames = []string{CheckMood, CheckLang, CheckLength, CheckFeminine, CheckCringe, CheckOnTopic}
+var CheckNames = []string{CheckMood, CheckLang, CheckLength, CheckFeminine, CheckHisGender, CheckCringe, CheckOnTopic}
 
 // Result — one check on one message.
 type Result struct {
@@ -52,6 +56,7 @@ func RunChecks(c Case, body, mood string) []Result {
 		checkLang(body),
 		checkLength(body),
 		checkFeminine(body),
+		checkHisGender(body),
 		checkCringe(body),
 		checkOnTopic(c, body),
 	}
@@ -176,6 +181,122 @@ func checkFeminine(body string) Result {
 	return Result{CheckFeminine, true, ""}
 }
 
+// --- he is male ----------------------------------------------------------
+//
+// The mirror of checkFeminine, and the failure it was written for: the model
+// wrote "ты давно не отдыхала", which addresses the operator as a woman. That
+// scored clean, because checkFeminine only ever looks at how SHE speaks about
+// herself.
+//
+// How it works: Russian past tense is gendered by suffix, -л (m) / -ла (f). So
+// this looks for feminine past-tense words in a sentence that also talks TO him
+// ("ты", "тебя", "тебе", "твой", …). A feminine verb that belongs to her ("я
+// заметила", "напомнила тебе") is skipped — that one is correct.
+//
+// Honest about the limits: this is a suffix rule, not a parser.
+//   - False positives: a feminine noun can be the subject in the same sentence
+//     ("зарядка была утром, ты её пропустил"). The guard below skips a verb whose
+//     previous word looks like a feminine noun, which helps but will not always
+//     be right.
+//   - False negatives: gender also shows up outside the past tense (short
+//     adjectives, "сама"), and none of that is checked here.
+//
+// That is acceptable for an eval check. It is a signal to read the message, not
+// a grammar verdict, and every hit prints the word it tripped on so a human can
+// disagree.
+
+// hisMarkers — words that mean the sentence is addressed to him.
+var hisMarkers = map[string]bool{
+	"ты": true, "тебя": true, "тебе": true, "тобой": true, "тобою": true,
+	"твой": true, "твоя": true, "твоё": true, "твое": true, "твои": true, "твою": true,
+}
+
+// notFeminineVerb — ordinary words ending in "-ла" that are not verbs. Small on
+// purpose: it only has to cover words a nudge might actually use.
+var notFeminineVerb = map[string]bool{
+	"школа": true, "скала": true, "игла": true, "метла": true, "смола": true,
+	"дела": true, "тела": true, "масла": true, "стекла": true, "весла": true,
+	"зола": true, "пчела": true, "числа": true, "села": true, "мыла": true,
+}
+
+// femininePast reports whether a word looks like a feminine past-tense verb:
+// "отдыхала", "поела", "выспалась".
+func femininePast(w string) bool {
+	if len([]rune(w)) < 3 || notFeminineVerb[w] {
+		return false
+	}
+	return strings.HasSuffix(w, "ла") || strings.HasSuffix(w, "лась")
+}
+
+// looksFeminineNoun — a crude guard against "зарядка была": a word right before
+// the verb that ends in "а"/"я" and is not itself a verb is probably the subject.
+func looksFeminineNoun(w string) bool {
+	if femininePast(w) || len([]rune(w)) < 3 {
+		return false
+	}
+	return strings.HasSuffix(w, "а") || strings.HasSuffix(w, "я")
+}
+
+// sentenceRE splits on sentence-ending punctuation, so a feminine verb in one
+// sentence is not blamed on a "ты" in the next.
+var sentenceRE = regexp.MustCompile(`[.!?;…]+`)
+
+func checkHisGender(body string) Result {
+	for _, sentence := range sentenceRE.Split(strings.ToLower(body), -1) {
+		words := wordRE.FindAllString(sentence, -1)
+		addressed := false
+		for _, w := range words {
+			if hisMarkers[w] {
+				addressed = true
+			}
+		}
+		if !addressed {
+			continue
+		}
+		for i, w := range words {
+			if !femininePast(w) || hersNotHis(words, i) {
+				continue
+			}
+			if i > 0 && looksFeminineNoun(prevWord(words, i)) {
+				continue
+			}
+			return Result{CheckHisGender, false,
+				fmt.Sprintf("feminine %q addressed to him — he is male", w)}
+		}
+	}
+	return Result{CheckHisGender, true, ""}
+}
+
+// hersNotHis — the verb is Maven's own if "я" comes shortly before it, or if the
+// thing she did was done to him ("напомнила тебе", "проверила за тебя").
+func hersNotHis(words []string, i int) bool {
+	for j := i - 1; j >= 0 && j >= i-3; j-- {
+		if words[j] == "я" {
+			return true
+		}
+	}
+	if i+1 < len(words) {
+		switch words[i+1] {
+		case "тебе", "тебя", "за", "тобой":
+			return true
+		}
+	}
+	return false
+}
+
+// prevWord — the word before i, skipping "не" and punctuation, so "не отдыхала"
+// still sees the subject.
+func prevWord(words []string, i int) string {
+	for j := i - 1; j >= 0; j-- {
+		w := words[j]
+		if w == "не" || w == "ни" || !unicode.Is(unicode.Cyrillic, []rune(w)[0]) {
+			continue
+		}
+		return w
+	}
+	return ""
+}
+
 // --- the cringe checks ---------------------------------------------------
 //
 // "Think Jarvis without the cringe part". DESIGN.md § Non-goals: "Not a

internal/phraser/eval/eval.go

@@ -281,7 +281,7 @@ func (r Report) String() string {
 	fmt.Fprintf(&b, "%s: %d/%d cases pass every check (%.1f%%), %d errors\n",
 		r.Name, r.Passed, r.Total, 100*r.Accuracy(), r.Errors)
 	for _, name := range CheckNames {
-		fmt.Fprintf(&b, "  %-9s %d/%d\n", name, r.ByCheck[name], r.Total)
+		fmt.Fprintf(&b, "  %-10s %d/%d\n", name, r.ByCheck[name], r.Total)
 	}
 	fmt.Fprintf(&b, "  latency: p50 %s  p95 %s  max %s\n", r.P50, r.P95, r.Max)
 	fmt.Fprintf(&b, "  by rule: %s\n", renderStats(r.ByRule))

internal/phraser/eval/eval_test.go

@@ -72,10 +72,11 @@ func TestStubBaseline(t *testing.T) {
 		// ceiling ("you've been at your desk for 4 hours without a break — step
 		// away for a bit." is 76 chars but 16 words). Left failing rather than
 		// raising the ceiling to hide it.
-		CheckLength:   12,
-		CheckFeminine: 15,
-		CheckCringe:   15,
-		CheckOnTopic:  12,
+		CheckLength:    12,
+		CheckFeminine:  15,
+		CheckHisGender: 15,
+		CheckCringe:    15,
+		CheckOnTopic:   12,
 	}
 	for name, floor := range floors {
 		if rep.ByCheck[name] < floor {
@@ -104,6 +105,14 @@ func TestChecksCatchWhatTheyClaim(t *testing.T) {
 		{"masculine predicative", "я должен сказать: попей воды.", CheckFeminine},
 		// The other direction: HE is male, so second-person masculine is right.
 		{"second person masculine ok", "ты не пил воду четыре часа.", ""},
+		// The real observed failure: she addressed him as a woman.
+		{"feminine second person", "ты давно не отдыхала — попей воды.", CheckHisGender},
+		{"feminine second person no dash", "ты пила воду четыре часа назад.", CheckHisGender},
+		// Her own feminine verb next to "ты" is correct and must not be flagged.
+		{"her feminine verb near ты", "я заметила, что ты не пил воду.", ""},
+		{"her feminine verb about him", "напомнила тебе про воду.", ""},
+		// A feminine noun subject in the same sentence is not him.
+		{"feminine noun subject ok", "зарядка была утром, ты её пропустил, попей воды.", ""},
 		{"feminine self ok", "я заметила: воды не было четыре часа.", ""},
 		{"pet name", "милый, попей воды.", CheckCringe},
 		{"emoji", "попей воды 💧", CheckCringe},