fix: attachment indicator disappearing with multiple tmux clients

The #{session_attached} tmux variable returns the count of attached clients,
not a boolean. When connecting from a second computer (2 clients attached),
the check `attached == 1` failed, causing the 📎 indicator to disappear.

Changed to `attached > 0` to correctly detect when any client is attached.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: jedarden

CHANGELOG.md

@@ -5,6 +5,14 @@ All notable changes to ccdash will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.7.18] - 2026-01-17
+
+### Fixed
+- **Attached indicator (📎) disappearing with multiple clients**: Fixed bug where the attachment indicator would disappear when connecting to a tmux session from a second computer
+  - Root cause: `#{session_attached}` returns the count of attached clients, not a boolean
+  - The check `attached == 1` failed when 2+ clients were attached
+  - Solution: Changed to `attached > 0` to correctly detect any attached clients
+
 ## [0.7.17] - 2026-01-16
 
 ### Added

internal/metrics/tmux.go

@@ -318,12 +318,12 @@ func (tc *TmuxCollector) parseSessionLine(line string) (TmuxSession, error) {
 	}
 	session.Windows = windows
 
-	// Parse attached status (1 = attached, 0 = detached)
+	// Parse attached status (number of clients attached, 0 = detached)
 	attached, err := strconv.Atoi(parts[2])
 	if err != nil {
 		return TmuxSession{}, fmt.Errorf("invalid attached status: %s", parts[2])
 	}
-	session.Attached = attached == 1
+	session.Attached = attached > 0
 
 	// Parse created timestamp (Unix timestamp)
 	createdUnix, err := strconv.ParseInt(parts[3], 10, 64)