history questions match verbs by lemma (V-530)

historyMarkers were truncated Russian prefixes, so "что я читал рассказ" read
as a history question because "рассказ" is a prefix of "рассказывал". That is
the defect V-528 fixed in complaint.go, where "лаг" matched "лагерь".

A history question is now an interrogative, plus a first- or second-person
subject, plus a verb of saying or recording matched through morph.SameWord.
"что записать?" is a verb with nobody saying it and no longer claims the turn.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

cmd/mavend/historyq.go

@@ -6,6 +6,8 @@ import (
 	"log"
 	"strings"
 	"time"
+
+	"github.com/kami/maven/internal/morph"
 )
 
 // Command history — "что я тебе говорил?", "что ты записала сегодня?"
@@ -15,18 +17,34 @@ import (
 // storage: everything he tapped in is already a row with a source and a
 // timestamp, and this only reads them back.
 
-// historyMarkers — the ways he asks what he told her. Each entry is a pair of
-// substrings that must BOTH appear, because either half alone is a different
-// question: "что я говорил про сервер" is a recall question the notes pass
-// answers better, and "что ты записала" with no "что" is not a question at all.
-var historyMarkers = [][2]string{
-	{"что я", "говорил"},
-	{"что я", "сказал"},
-	{"что я", "рассказ"},
-	{"что ты", "записал"},
-	{"что ты", "запомнил"},
-	{"что я", "отмечал"},
-	{"что я", "отметил"},
+// A history question needs three things in one utterance: the interrogative,
+// whose turn is being asked about, and a verb of saying or recording. Any two of
+// them are a different question. "что я говорил про сервер" names a topic and
+// the notes pass answers it better; "записал молоко" is a capture.
+//
+// The verbs are matched by lemma through internal/morph, not by a truncated
+// prefix (Vikunja #530). The pairs here used to hold "рассказ" and "записал",
+// which is the defect V-528 fixed in complaint.go: "рассказ" is also the noun,
+// so "что я рассказал ей" and "что я читал рассказ" were the same string test.
+// Aspect pairs are separate lemmas in the dictionary, so both members are listed.
+var (
+	// historySpokenVerbs — what HE did. "что я тебе говорил".
+	historySpokenVerbs = []string{"говорить", "сказать", "рассказать", "рассказывать", "отметить", "отмечать"}
+
+	// historyRecordedVerbs — what SHE did with it. "что ты записала сегодня".
+	historyRecordedVerbs = []string{"записать", "запомнить", "отметить", "отмечать"}
+
+	// firstPersonSubjects and secondPersonSubjects — whose turn the question is
+	// about. Only the subject forms: "что я тебе говорил" is his turn, and the
+	// dative "тебе" in it is not the subject.
+	firstPersonSubjects  = []string{"я"}
+	secondPersonSubjects = []string{"ты"}
+)
+
+// historyMarkersEn — the English pairs, kept as substrings because the
+// dictionary is Russian. Each half alone is a different question, the same way
+// the Russian test needs all three parts.
+var historyMarkersEn = [][2]string{
 	{"what did i", "tell"},
 	{"what did you", "record"},
 }
@@ -47,11 +65,56 @@ func isHistoryQuery(u string) bool {
 			return false
 		}
 	}
-	for _, pair := range historyMarkers {
+	for _, pair := range historyMarkersEn {
 		if strings.Contains(s, pair[0]) && strings.Contains(s, pair[1]) {
 			return true
 		}
 	}
+	toks := historyTokens(s)
+	if !hasAny(toks, "что", "чего") {
+		return false
+	}
+	if hasAny(toks, firstPersonSubjects...) && hasVerbForm(toks, historySpokenVerbs) {
+		return true
+	}
+	return hasAny(toks, secondPersonSubjects...) && hasVerbForm(toks, historyRecordedVerbs)
+}
+
+// historyTokens splits an utterance into bare words. The punctuation goes
+// because "говорил?" is the same word as "говорил".
+func historyTokens(s string) []string {
+	toks := strings.Fields(s)
+	out := make([]string, 0, len(toks))
+	for _, t := range toks {
+		if t = strings.Trim(t, ".,!?;:—–-()\"'«»"); t != "" {
+			out = append(out, t)
+		}
+	}
+	return out
+}
+
+func hasAny(toks []string, want ...string) bool {
+	for _, t := range toks {
+		for _, w := range want {
+			if t == w {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+// hasVerbForm reports whether any token is a form of any of the lemmas. Both
+// sides go through the dictionary, so a caller may name the infinitive and he
+// may say the past tense.
+func hasVerbForm(toks []string, lemmas []string) bool {
+	for _, t := range toks {
+		for _, l := range lemmas {
+			if morph.SameWord(t, l) {
+				return true
+			}
+		}
+	}
 	return false
 }
 

cmd/mavend/historyq_test.go

@@ -41,6 +41,17 @@ func TestIsHistoryQuery(t *testing.T) {
 		{"что я тебе говорил?", true},
 		{"что ты записала сегодня?", true},
 		{"что я отмечал?", true},
+		// Forms the truncated prefixes did not reach. The dictionary answers
+		// these because it lemmatises both sides (V-530).
+		{"что я тебе рассказывал?", true},
+		{"что я сказала вчера", true},
+		{"что ты запомнила?", true},
+		// The noun, not the verb. "рассказ" was a prefix of the old pair, so
+		// this read as a history question — the same defect V-528 fixed in
+		// complaint.go, where "лаг" matched "лагерь".
+		{"что я читал рассказ", false},
+		// A verb of saying with nobody saying it.
+		{"что записать?", false},
 		// A named topic is a recall question, and the notes pass answers it
 		// better than a list of the last five facts does.
 		{"что я говорил про сервер?", false},