Ignore other bots: skip m.notice + IGNORED_BOTS denylist (Pete)

No repost (urls.go) or XP (xp.go) for ignored senders. Filters at the
dispatcher so all plugins are covered. m.notice catches convention-
following bots; IGNORED_BOTS handles m.text bots like Pete.

.env.example

@@ -7,6 +7,9 @@ BOT_DISPLAY_NAME=GogoBee
 # Which rooms the bot posts scheduled content to (comma-separated room IDs)
 BROADCAST_ROOMS=!roomid:example.com
 
+# Bots to ignore wholesale: no repost, no XP (comma-separated user IDs)
+IGNORED_BOTS=@pete:matrix.example.org
+
 # Admins who can run admin-only commands (comma-separated Matrix user IDs)
 ADMIN_USERS=@yourmxid:example.com
 

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/olebedev/when v1.1.0
 	github.com/robfig/cron/v3 v3.0.1
 	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
-	golang.org/x/image v0.43.0
+	golang.org/x/image v0.40.0
 	maunium.net/go/mautrix v0.28.0
 	modernc.org/sqlite v1.50.1
 )
@@ -40,7 +40,7 @@ require (
 	golang.org/x/exp v0.0.0-20260508232706-74f9aab9d74a // indirect
 	golang.org/x/net v0.54.0 // indirect
 	golang.org/x/sys v0.44.0 // indirect
-	golang.org/x/text v0.38.0 // indirect
+	golang.org/x/text v0.37.0 // indirect
 	modernc.org/libc v1.72.3 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect

go.sum

@@ -85,8 +85,8 @@ golang.org/x/crypto v0.51.0 h1:IBPXwPfKxY7cWQZ38ZCIRPI50YLeevDLlLnyC5wRGTI=
 golang.org/x/crypto v0.51.0/go.mod h1:8AdwkbraGNABw2kOX6YFPs3WM22XqI4EXEd8g+x7Oc8=
 golang.org/x/exp v0.0.0-20260508232706-74f9aab9d74a h1:+3jdDGGB8NGb1Zktc737jlt3/A5f6UlwSzmvqUuufxw=
 golang.org/x/exp v0.0.0-20260508232706-74f9aab9d74a/go.mod h1:d2fgXJLVs4dYDHUk5lwMIfzRzSrWCfGZb0ZqeLa/Vcw=
-golang.org/x/image v0.43.0 h1:FLxcP4ec2350nTfOC8ysKtqYSIFbk/QGjw1ZHNP4tsY=
+golang.org/x/image v0.40.0 h1:Tw4GyDXMo+daZN1znreBRC3VayR1aLFUyUEOLUdW1a8=
-golang.org/x/image v0.43.0/go.mod h1:rrpelvGFt+kLPAjPM4HeWPgrl0FtafueU//e5N0qk/Q=
+golang.org/x/image v0.40.0/go.mod h1:uIc348UZMSvS5Z65CVZ7iDPaNobNFEPeJ4kbqTOszmA=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
@@ -112,8 +112,8 @@ golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sync v0.21.0 h1:HLII4xRRTtCRkxYp4HNFF0Js/Og6q2i++KXbg0gHCwM=
+golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
-golang.org/x/sync v0.21.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -146,8 +146,8 @@ golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
-golang.org/x/text v0.38.0 h1:sXmwo9DwP3OK9EZ7PqAdaooSGozfl/3a6/xJcbzPRhE=
+golang.org/x/text v0.37.0 h1:Cqjiwd9eSg8e0QAkyCaQTNHFIIzWtidPahFWR83rTrc=
-golang.org/x/text v0.38.0/go.mod h1:YXZt3QhHUKYT53r2lLKFIVi6Ao1jdzrTR/KQ09qyxF4=
+golang.org/x/text v0.37.0/go.mod h1:a5sjxXGs9hsn/AJVwuElvCAo9v8QYLzvavO5z2PiM38=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=

main.go

@@ -206,6 +206,14 @@ func main() {
 
 	// ---- Set up event handlers ----
 
+	// Bots we ignore wholesale (no repost, no XP). Set IGNORED_BOTS to a
+	// comma-separated list of Matrix user IDs. Pete (@pete:...) posts plain
+	// m.text, so the m.notice convention below won't catch it on its own.
+	ignoredBots := make(map[id.UserID]bool)
+	for _, u := range splitAndTrim(os.Getenv("IGNORED_BOTS"), ",") {
+		ignoredBots[id.UserID(u)] = true
+	}
+
 	syncer := client.Syncer.(*mautrix.DefaultSyncer)
 
 	// Auto-join on invite + moderation member tracking
@@ -260,11 +268,25 @@ func main() {
 			return
 		}
 
+		// Skip explicitly ignored bots (e.g. Pete, which posts m.text).
+		if ignoredBots[evt.Sender] {
+			return
+		}
+
 		content := evt.Content.AsMessage()
 		if content == nil || content.Body == "" {
 			return
 		}
 
+		// Ignore messages from other bots. By Matrix convention automated
+		// clients send m.notice (instead of m.text) precisely so other bots
+		// don't react to them, which avoids feedback loops. Dropping notices
+		// here means no plugin reposts them (urls.go) or awards XP for them
+		// (xp.go). Our own messages are already skipped by the sender check.
+		if content.MsgType == event.MsgNotice {
+			return
+		}
+
 		// Ignore edits — they arrive as m.room.message with m.replace relation.
 		// Without this check, edits re-trigger URL previews and inflate stats.
 		if content.RelatesTo != nil && content.RelatesTo.Type == event.RelReplace {