mavend: record which channel a quiet toggle arrived on

resolveQuietToggle runs inside runTurn, so mavweb /api/chat and telegram reach
it as well as the microphone. Every toggle was written with Source "tap:voice"
regardless, which left the facts table claiming a mic flipped a setting nobody
spoke to. This is the one function whose own doc comment calls it a
network-reachable way to change a daemon-wide setting, and provenance is the
first column read when asking why quiet mode is on.

runTurn now takes the channel it was entered from and the toggle writes it:
"tap:voice" from HandlePushToTalk, "tap:text" from handleText.

Found in review of #53.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TrVSBKe3RFDF4fGYKWYQnX

cmd/mavend/quiet_toggle.go

@@ -19,7 +19,14 @@ import (
 // both the voice path and the text path (mavweb /api/chat, telegram) reach it,
 // so a false positive here is a network-reachable way to flip a daemon-wide
 // setting. See classifyQuietToggle for the matching rule.
-func (h *reactiveHandler) resolveQuietToggle(ctx context.Context, text string) (string, bool) {
+//
+// src is the channel the utterance arrived on, and it is written straight into
+// the fact. Every toggle used to be stored as "tap:voice", including the ones
+// typed into the web UI, which left the facts table claiming a microphone flipped
+// a setting nobody spoke to. This is the one function where that matters most:
+// when he goes looking at why quiet mode is on, provenance is the first column
+// he reads.
+func (h *reactiveHandler) resolveQuietToggle(ctx context.Context, text string, src turnSource) (string, bool) {
 	on, off := classifyQuietToggle(text)
 	if !on && !off {
 		return "", false
@@ -35,7 +42,7 @@ func (h *reactiveHandler) resolveQuietToggle(ctx context.Context, text string) (
 		Kind:       "config",
 		Key:        "quiet_hours",
 		Value:      val,
-		Source:     "tap:voice",
+		Source:     string(src),
 		Confidence: 1.0,
 	}); err != nil {
 		log.Printf("voice: write quiet_hours: %v", err)