Camp: auto-break when party moves to a different room

Camp was a stationary "rest here until the next briefing" intent, but
nothing struck it when the autopilot / !zone advance / fork picks walked
the party into a new room. The stale CampState then blocked !camp <type>
with "already camped" even though the player was several rooms away.

autoBreakCampOnMove clears the camp (no rest bonuses — those only land
at briefing time via processOvernightCamp) whenever Camp.RoomIndex no
longer matches run.CurrentRoom. Wired into advanceOnceWithOpts (covers
advance/autopilot, complete/fork/next-room branches all surface a
"⛺ Camp struck" banner) and zoneCmdGo (fork commit).

internal/plugin/dnd_expedition_camp.go

@@ -384,6 +384,41 @@ func campLocationCheck(exp *Expedition) (cleared bool, problem string) {
 	return true, ""
 }
 
+// autoBreakCampOnMove strikes an active camp when the player has moved
+// to a different room than the one camp was pitched in. Camp is a
+// stationary intent (long-rest at this spot until the next briefing);
+// once the party walks on — whether by autopilot, manual !advance, or
+// fork pick — the tent stops mattering. Overnight rest effects are not
+// applied here (those only land at briefing time via
+// processOvernightCamp). Returns the camp type that was struck, or ""
+// if no break happened. Safe to call when there's no expedition.
+func autoBreakCampOnMove(userID id.UserID) string {
+	exp, err := getActiveExpedition(userID)
+	if err != nil || exp == nil {
+		return ""
+	}
+	if exp.Camp == nil || !exp.Camp.Active {
+		return ""
+	}
+	if exp.RunID == "" {
+		return ""
+	}
+	run, err := getZoneRun(exp.RunID)
+	if err != nil || run == nil {
+		return ""
+	}
+	if run.CurrentRoom == exp.Camp.RoomIndex {
+		return ""
+	}
+	kind := exp.Camp.Type
+	if err := updateCamp(exp.ID, nil); err != nil {
+		slog.Warn("camp: auto-break on move failed", "expedition", exp.ID, "err", err)
+		return ""
+	}
+	_ = appendExpeditionLog(exp.ID, exp.CurrentDay, "narrative", "camp struck (party moved on)", "")
+	return kind
+}
+
 // campCurrentRoomIndex returns 0 (entry) when no room context exists.
 func campCurrentRoomIndex(exp *Expedition) int {
 	if exp.RunID == "" {

internal/plugin/dnd_zone_cmd.go

@@ -606,6 +606,10 @@ func (p *AdventurePlugin) advanceOnceWithOpts(ctx MessageContext, compact bool)
 	if gerr != nil {
 		return advanceResult{}, fmt.Errorf("Couldn't advance: %s", gerr.Error())
 	}
+	var campStruck string
+	if kind := autoBreakCampOnMove(ctx.Sender); kind != "" {
+		campStruck = fmt.Sprintf("⛺ Camp struck (**%s**) — the party moved on.\n\n", kind)
+	}
 	if complete {
 		_, _ = applyMoodEvent(run.RunID, MoodEventZoneComplete)
 		var b strings.Builder
@@ -613,6 +617,9 @@ func (p *AdventurePlugin) advanceOnceWithOpts(ctx MessageContext, compact bool)
 			b.WriteString(outcome)
 			b.WriteString("\n\n")
 		}
+		if campStruck != "" {
+			b.WriteString(campStruck)
+		}
 		// A "complete" run is only a full zone clear when it isn't a mid-zone
 		// region clear of a multi-region zone. For the latter, name the region
 		// and point at the next one — "Cleared {zone}. Run complete." reads
@@ -658,6 +665,9 @@ func (p *AdventurePlugin) advanceOnceWithOpts(ctx MessageContext, compact bool)
 			b.WriteString("\n\n")
 		}
 		b.WriteString(fmt.Sprintf("✓ Cleared room %d (%s).\n\n", prevIdx+1, prettyRoomType(prev)))
+		if campStruck != "" {
+			b.WriteString(campStruck)
+		}
 		b.WriteString(forkMsg)
 		return advanceResult{
 			preStream: preStream,
@@ -668,6 +678,9 @@ func (p *AdventurePlugin) advanceOnceWithOpts(ctx MessageContext, compact bool)
 		}, nil
 	}
 	finalMsg := p.formatNextRoomMessage(run, zone, prev, prevIdx, outcome, next)
+	if campStruck != "" {
+		finalMsg = campStruck + finalMsg
+	}
 
 	// H2 — auto-harvest the room the player just walked into. Only fires
 	// for Exploration rooms (Entry/Trap/Elite/Boss self-skip via

internal/plugin/dnd_zone_cmd_graph.go

@@ -196,6 +196,9 @@ func (p *AdventurePlugin) zoneCmdGo(ctx MessageContext, rest string) error {
 	nextRoom := nodeKindToRoomType(nextNode.Kind)
 	nextIdx := run.CurrentRoom + 1
 	var b strings.Builder
+	if kind := autoBreakCampOnMove(ctx.Sender); kind != "" {
+		b.WriteString(fmt.Sprintf("⛺ Camp struck (**%s**) — the party moved on.\n\n", kind))
+	}
 	b.WriteString(fmt.Sprintf("➡ You take the path: **%s**.\n\n", chosen.Label))
 	if nextRoom == RoomBoss {
 		if line := composeBossEntry(zone.ID, run.RunID, nextIdx); line != "" {