one gesture beside the reply corrects a turn (V-630)

Two buttons' worth of cost: wrong, or wrong and it should have been this.
The second is worth much more and is not required to give the first, so a
turn marked wrong with no target still lands as a usable negative.

The target is one of the seven intents, never free text: an unroutable label
would enter the one table V-632 fits prototypes from.

/api/correct is not behind the step-up gate. It reaches no router, no model
and no act path, and a correction that costs a passkey tap is one that does
not get made.

cmd/mavweb/main.go

@@ -210,6 +210,13 @@ func main() {
 	mux.HandleFunc("/routines", gatedPage(handleRoutines))
 	mux.HandleFunc("/api/chat", gatedPage(handleChatAPI))
 	mux.HandleFunc("/api/revert", gatedPage(handleRevert))
+	// POST /api/correct is deliberately NOT on the step-up list (V-630). It
+	// reaches no router, no model and no act path: it writes one label row that
+	// nothing executes from. A correction that costs a passkey tap is a
+	// correction the owner does not make, and then the table stays empty.
+	mux.HandleFunc("/api/correct", func(w http.ResponseWriter, r *http.Request) {
+		handleCorrectAPI(w, r, core)
+	})
 	mux.HandleFunc("/models", func(w http.ResponseWriter, r *http.Request) {
 		handleModels(w, r, core, swapConn, stepUpSession, *requireStepUp)
 	})