linux appimage build with docker, egl fallback, and webkitgtk fixes

src/views/Settings.vue

@@ -526,6 +526,11 @@
             </div>
           </div>
 
+          <!-- Linux app tracking notice -->
+          <p v-if="platform === 'linux'" class="text-[0.6875rem] text-text-tertiary -mt-1">
+            On Linux, window visibility cannot be detected. The timer will only pause when the tracked app's process exits entirely.
+          </p>
+
           <!-- Check Interval -->
           <div class="flex items-center justify-between">
             <div>
@@ -547,7 +552,7 @@
           <div class="border-t border-border-subtle" />
 
           <!-- Timeline Recording -->
-          <div class="flex items-center justify-between">
+          <div :class="['flex items-center justify-between', platform === 'linux' && 'opacity-50 pointer-events-none']">
             <div>
               <p class="text-[0.8125rem] text-text-primary">Record app timeline</p>
               <p class="text-[0.6875rem] text-text-tertiary mt-0.5">Capture which apps and windows are active while the timer runs. Data stays local.</p>
@@ -556,6 +561,7 @@
               @click="toggleTimelineRecording"
               role="switch"
               :aria-checked="timelineRecording"
+              :disabled="platform === 'linux'"
               aria-label="Record app timeline"
               :class="[
                 'relative inline-flex h-5 w-9 items-center rounded-full transition-colors duration-150',
@@ -570,6 +576,10 @@
               />
             </button>
           </div>
+          <!-- Linux timeline notice -->
+          <p v-if="platform === 'linux'" class="text-[0.6875rem] text-text-tertiary -mt-1">
+            Timeline recording is not available on Linux - Wayland's security model prevents detecting the foreground window.
+          </p>
 
           <!-- Divider -->
           <div class="border-t border-border-subtle" />
@@ -1674,6 +1684,7 @@ const shortcutToggleTimer = ref('CmdOrCtrl+Shift+T')
 const shortcutShowApp = ref('CmdOrCtrl+Shift+Z')
 const shortcutQuickEntry = ref('CmdOrCtrl+Shift+N')
 const timelineRecording = ref(false)
+const platform = ref('')
 const timerFont = ref('JetBrains Mono')
 const timerFontOptions = TIMER_FONTS
 const reduceMotion = ref('system')
@@ -2495,6 +2506,7 @@ async function clearAllData() {
 
 // Load settings on mount
 onMounted(async () => {
+  try { platform.value = await invoke('get_platform') } catch { /* non-critical */ }
   await settingsStore.fetchSettings()
 
   hourlyRate.value = parseFloat(settingsStore.settings.hourly_rate) || 0
@@ -2524,7 +2536,7 @@ onMounted(async () => {
   businessEmail.value = settingsStore.settings.business_email || ''
   businessPhone.value = settingsStore.settings.business_phone || ''
   businessLogo.value = settingsStore.settings.business_logo || ''
-  timelineRecording.value = settingsStore.settings.timeline_recording === 'on'
+  timelineRecording.value = platform.value !== 'linux' && settingsStore.settings.timeline_recording === 'on'
   timerFont.value = settingsStore.settings.timer_font || 'JetBrains Mono'
   reduceMotion.value = settingsStore.settings.reduce_motion || 'system'
   dyslexiaMode.value = settingsStore.settings.dyslexia_mode === 'true'