From aed3a4154e6e7d8ea1529921143409c58988c41d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=9B=B7=E7=94=B5=E8=8A=BD=E8=A1=A3?=
 <zhangyanghaha0407@outlook.com>
Date: Fri, 8 May 2026 05:13:20 -0400
Subject: [PATCH] Track tab sync participation

---
 crates/ely_browser_core/src/state/sync.rs |  6 +++++-
 crates/ely_browser_core/src/state/tabs.rs | 14 ++++++++++++++
 crates/ely_browser_core/tests/sync.rs     | 21 +++++++++++++++++++++
 crates/ely_domain/src/tab.rs              | 11 +++++++++++
 4 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/crates/ely_browser_core/src/state/sync.rs b/crates/ely_browser_core/src/state/sync.rs
index d9171c3..1c0d526 100644
--- a/crates/ely_browser_core/src/state/sync.rs
+++ b/crates/ely_browser_core/src/state/sync.rs
@@ -76,7 +76,7 @@ impl BrowserCore {
             ),
             self.sync_object_status(
                 SyncObjectKind::Tabs,
-                self.tabs.len(),
+                self.sync_enabled_tab_count(),
                 SyncObjectState::LocalOnly,
             ),
             self.sync_object_status(
@@ -126,4 +126,8 @@ impl BrowserCore {
 
         SyncObjectStatus::with_policy(kind, local_count, state, policy)
     }
+
+    fn sync_enabled_tab_count(&self) -> usize {
+        self.tabs.iter().filter(|tab| tab.sync_enabled()).count()
+    }
 }
diff --git a/crates/ely_browser_core/src/state/tabs.rs b/crates/ely_browser_core/src/state/tabs.rs
index dde3720..ce3f9cf 100644
--- a/crates/ely_browser_core/src/state/tabs.rs
+++ b/crates/ely_browser_core/src/state/tabs.rs
@@ -243,6 +243,20 @@ impl BrowserCore {
         Ok(next_pinned)
     }
 
+    pub fn set_tab_sync_enabled(
+        &mut self,
+        tab_id: &TabId,
+        sync_enabled: bool,
+    ) -> Result<(), CoreError> {
+        let tab = self
+            .tabs
+            .iter_mut()
+            .find(|tab| tab.id() == tab_id)
+            .ok_or_else(|| CoreError::TabNotFound { id: tab_id.clone() })?;
+        tab.set_sync_enabled(sync_enabled);
+        Ok(())
+    }
+
     pub fn active_tab(&self) -> Result<&BrowserTab, CoreError> {
         self.tabs
             .iter()
diff --git a/crates/ely_browser_core/tests/sync.rs b/crates/ely_browser_core/tests/sync.rs
index 94ba7ac..938566a 100644
--- a/crates/ely_browser_core/tests/sync.rs
+++ b/crates/ely_browser_core/tests/sync.rs
@@ -63,3 +63,24 @@ fn sync_object_policy_pauses_object_kind() -> Result<(), Box<dyn Error>> {
     assert_eq!(spaces_status.state(), SyncObjectState::LocalOnly);
     Ok(())
 }
+
+#[test]
+fn tab_sync_status_counts_sync_enabled_tabs() -> Result<(), Box<dyn Error>> {
+    let mut core = BrowserCore::new(InitialBrowserConfig::ely_defaults()?)?;
+    let unsynced_tab_id = core.open_tab(UrlText::parse("https://example.com/local-only")?);
+
+    core.set_tab_sync_enabled(&unsynced_tab_id, false)?;
+    let snapshot = core.snapshot()?;
+    let Some(tabs_status) =
+        snapshot.sync_status.objects().iter().find(|status| status.kind() == SyncObjectKind::Tabs)
+    else {
+        return Err("missing tabs sync status".into());
+    };
+    let Some(unsynced_tab) = snapshot.tabs.iter().find(|tab| tab.id() == &unsynced_tab_id) else {
+        return Err("missing unsynced tab".into());
+    };
+
+    assert!(!unsynced_tab.sync_enabled());
+    assert_eq!(tabs_status.local_count(), 1);
+    Ok(())
+}
diff --git a/crates/ely_domain/src/tab.rs b/crates/ely_domain/src/tab.rs
index 3621770..1172725 100644
--- a/crates/ely_domain/src/tab.rs
+++ b/crates/ely_domain/src/tab.rs
@@ -30,6 +30,7 @@ pub struct BrowserTab {
     state: TabState,
     flags: TabFlags,
     split_id: Option<SplitId>,
+    sync_enabled: bool,
     created_at: SystemTime,
     last_active_at: SystemTime,
 }
@@ -54,6 +55,7 @@ impl BrowserTab {
             state: TabState::Ready,
             flags: TabFlags::default(),
             split_id: None,
+            sync_enabled: true,
             created_at,
             last_active_at: created_at,
         }
@@ -149,6 +151,11 @@ impl BrowserTab {
         self.split_id.as_ref()
     }
 
+    #[must_use]
+    pub fn sync_enabled(&self) -> bool {
+        self.sync_enabled
+    }
+
     pub fn set_split_id(&mut self, split_id: SplitId) {
         self.split_id = Some(split_id);
     }
@@ -156,4 +163,8 @@ impl BrowserTab {
     pub fn clear_split_id(&mut self) {
         self.split_id = None;
     }
+
+    pub fn set_sync_enabled(&mut self, sync_enabled: bool) {
+        self.sync_enabled = sync_enabled;
+    }
 }