feat(gmail): make search API

src/modules/cache/imap/v2.rs

@@ -238,7 +238,7 @@ pub struct EmailEnvelopeV3 {
     pub mid: Option<String>,
     /// A list of labels applied to the message.
     ///
-    /// Each element is a string representing a Gmail label ID (e.g., "INBOX", "UNREAD").
+    /// Each element is a string representing a Gmail label name (e.g., "INBOX", "UNREAD").
     /// This field reflects the current labels associated with the email.
     ///
     /// Note: This field is populated only for Gmail API accounts. For other account types, it will be empty.

src/modules/cache/vendor/gmail/cache.rs

@@ -10,4 +10,4 @@ use ahash::AHashMap;
 use crate::modules::common::lru::TimedLruCache;
 
 pub static GMAIL_LABELS_CACHE: LazyLock<TimedLruCache<u64, AHashMap<String, String>>> =
-    LazyLock::new(|| TimedLruCache::new(100, Duration::from_secs(3600)));
+    LazyLock::new(|| TimedLruCache::new(100, Duration::from_secs(60)));

src/modules/cache/vendor/gmail/model/messages.rs

@@ -32,7 +32,7 @@ pub struct MessageList {
     pub next_page_token: Option<String>,
     #[serde(rename = "resultSizeEstimate")]
     #[serde(default, skip_serializing_if = "Option::is_none")]
-    pub result_size_estimate: Option<i64>,
+    pub result_size_estimate: Option<u64>,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]