diff --git a/src/daemon/mod.rs b/src/daemon/mod.rs
index cae9b1a..9483141 100644
--- a/src/daemon/mod.rs
+++ b/src/daemon/mod.rs
@@ -224,6 +224,7 @@ fn has_supervised_channels(config: &Config) -> bool {
         irc,
         lark,
         dingtalk,
+        linq,
         qq,
         ..
     } = &config.channels_config;
@@ -240,6 +241,7 @@ fn has_supervised_channels(config: &Config) -> bool {
         || irc.is_some()
         || lark.is_some()
         || dingtalk.is_some()
+        || linq.is_some()
         || qq.is_some()
 }
 
diff --git a/src/gateway/mod.rs b/src/gateway/mod.rs
index 9847806..b28ed1a 100644
--- a/src/gateway/mod.rs
+++ b/src/gateway/mod.rs
@@ -653,11 +653,16 @@ async fn persist_pairing_tokens(config: Arc<Mutex<Config>>, pairing: &PairingGua
     let paired_tokens = pairing.tokens();
     // This is needed because parking_lot's guard is not Send so we clone the inner
     // this should be removed once async mutexes are used everywhere
-    let mut cfg = { config.lock().clone() };
-    cfg.gateway.paired_tokens = paired_tokens;
-    cfg.save()
+    let mut updated_cfg = { config.lock().clone() };
+    updated_cfg.gateway.paired_tokens = paired_tokens;
+    updated_cfg
+        .save()
         .await
-        .context("Failed to persist paired tokens to config.toml")
+        .context("Failed to persist paired tokens to config.toml")?;
+
+    // Keep shared runtime config in sync with persisted tokens.
+    *config.lock() = updated_cfg;
+    Ok(())
 }
 
 /// Webhook request body
@@ -1410,7 +1415,9 @@ mod tests {
         assert!(guard.is_authenticated(&token));
 
         let shared_config = Arc::new(Mutex::new(config));
-        persist_pairing_tokens(shared_config, &guard).await.unwrap();
+        persist_pairing_tokens(shared_config.clone(), &guard)
+            .await
+            .unwrap();
 
         let saved = tokio::fs::read_to_string(config_path).await.unwrap();
         let parsed: Config = toml::from_str(&saved).unwrap();
@@ -1418,6 +1425,10 @@ mod tests {
         let persisted = &parsed.gateway.paired_tokens[0];
         assert_eq!(persisted.len(), 64);
         assert!(persisted.chars().all(|c| c.is_ascii_hexdigit()));
+
+        let in_memory = shared_config.lock();
+        assert_eq!(in_memory.gateway.paired_tokens.len(), 1);
+        assert_eq!(&in_memory.gateway.paired_tokens[0], persisted);
     }
 
     #[test]
diff --git a/src/onboard/wizard.rs b/src/onboard/wizard.rs
index 8522540..0aa5a66 100644
--- a/src/onboard/wizard.rs
+++ b/src/onboard/wizard.rs
@@ -74,6 +74,7 @@ fn has_launchable_channels(channels: &ChannelsConfig) -> bool {
         irc,
         lark,
         dingtalk,
+        linq,
         qq,
         ..
     } = channels;
@@ -90,6 +91,7 @@ fn has_launchable_channels(channels: &ChannelsConfig) -> bool {
         || irc.is_some()
         || lark.is_some()
         || dingtalk.is_some()
+        || linq.is_some()
         || qq.is_some()
 }
 
diff --git a/src/tools/proxy_config.rs b/src/tools/proxy_config.rs
index 5f4183d..a4d90d1 100644
--- a/src/tools/proxy_config.rs
+++ b/src/tools/proxy_config.rs
@@ -189,19 +189,40 @@ impl ProxyConfigTool {
             })?;
         }
 
-        if let MaybeSet::Set(update) = Self::parse_optional_string_update(args, "http_proxy")? {
-            proxy.http_proxy = Some(update);
-            touched_proxy_url = true;
+        match Self::parse_optional_string_update(args, "http_proxy")? {
+            MaybeSet::Set(update) => {
+                proxy.http_proxy = Some(update);
+                touched_proxy_url = true;
+            }
+            MaybeSet::Null => {
+                proxy.http_proxy = None;
+                touched_proxy_url = true;
+            }
+            MaybeSet::Unset => {}
         }
 
-        if let MaybeSet::Set(update) = Self::parse_optional_string_update(args, "https_proxy")? {
-            proxy.https_proxy = Some(update);
-            touched_proxy_url = true;
+        match Self::parse_optional_string_update(args, "https_proxy")? {
+            MaybeSet::Set(update) => {
+                proxy.https_proxy = Some(update);
+                touched_proxy_url = true;
+            }
+            MaybeSet::Null => {
+                proxy.https_proxy = None;
+                touched_proxy_url = true;
+            }
+            MaybeSet::Unset => {}
         }
 
-        if let MaybeSet::Set(update) = Self::parse_optional_string_update(args, "all_proxy")? {
-            proxy.all_proxy = Some(update);
-            touched_proxy_url = true;
+        match Self::parse_optional_string_update(args, "all_proxy")? {
+            MaybeSet::Set(update) => {
+                proxy.all_proxy = Some(update);
+                touched_proxy_url = true;
+            }
+            MaybeSet::Null => {
+                proxy.all_proxy = None;
+                touched_proxy_url = true;
+            }
+            MaybeSet::Unset => {}
         }
 
         if let Some(no_proxy_raw) = args.get("no_proxy") {
@@ -494,4 +515,34 @@ mod tests {
         assert!(get_result.output.contains("provider.openai"));
         assert!(get_result.output.contains("services"));
     }
+
+    #[tokio::test]
+    async fn set_null_proxy_url_clears_existing_value() {
+        let tmp = TempDir::new().unwrap();
+        let tool = ProxyConfigTool::new(test_config(&tmp).await, test_security());
+
+        let set_result = tool
+            .execute(json!({
+                "action": "set",
+                "http_proxy": "http://127.0.0.1:7890"
+            }))
+            .await
+            .unwrap();
+        assert!(set_result.success, "{:?}", set_result.error);
+
+        let clear_result = tool
+            .execute(json!({
+                "action": "set",
+                "http_proxy": null
+            }))
+            .await
+            .unwrap();
+        assert!(clear_result.success, "{:?}", clear_result.error);
+
+        let get_result = tool.execute(json!({"action": "get"})).await.unwrap();
+        assert!(get_result.success);
+        let parsed: Value = serde_json::from_str(&get_result.output).unwrap();
+        assert!(parsed["proxy"]["http_proxy"].is_null());
+        assert!(parsed["runtime_proxy"]["http_proxy"].is_null());
+    }
 }