Don't tell her she can't talk

The block listed what she can do and ended with "nothing else". It sits
in front of the chat and general-knowledge prompts too, so that told her
to refuse the exact thing those prompts are for. Talking is now first in
the list, and the closing line limits ACTIONS rather than everything.

Also dropped the self-introduction from the knowledge prompt. It said
"Мавена, персональный ассистент" — a different name and a masculine
noun, right after the block says she is Maven and feminine. Identity
lives in the block now.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CGeSZxh1DCtRxmFVSYVGvJ

internal/persona/persona.go

@@ -64,7 +64,8 @@ func (f Facts) Block(now time.Time) string {
 		ruWeekdays[int(now.Weekday())], now.Day(), ruMonths[int(now.Month())-1], now.Year(),
 		now.Hour(), now.Minute()))
 
-	b.WriteString("Умеешь: " + strings.Join(f.can(), "; ") + ". Больше ничего — если просят другое, скажи прямо, что не умеешь.\n")
+	b.WriteString("Умеешь: " + strings.Join(f.can(), "; ") +
+		". Других ДЕЙСТВИЙ не умеешь — если просят такое, скажи прямо.\n")
 
 	if s := strings.TrimSpace(f.Static); s != "" {
 		b.WriteString(s + "\n")
@@ -83,6 +84,11 @@ func (f Facts) Block(now time.Time) string {
 // perform is worse than one she never mentions.
 func (f Facts) can() []string {
 	c := []string{
+		// Talking comes first, and the closing line says "действий" rather than
+		// "ничего", because this same block sits in front of the chat and
+		// general-knowledge prompts. A flat "you can do nothing else" would
+		// tell her to refuse the exact thing those two prompts are for.
+		"разговаривать и отвечать на вопросы",
 		"ставить напоминания",
 		"записывать заметки и факты и отвечать по ним",
 		"смотреть календарь",