fix(android): 钉 chrono <0.4.40 修复 arrow-arith 51 的 quarter 方法歧义 (E0034)

[原因] duckdb 0.10.2 非可选依赖 arrow 51 (→ arrow-arith 51)。
chrono 0.4.40+ 在 Datelike 新增 quarter(), 与 arrow-arith 自带的
ChronoDateExt::quarter 在 temporal.rs:90 产生 E0034 multiple applicable items。
桌面构建走 docker-build(web+OTA), 从未编译 arrow, 故只有 android CI 暴露。

[验证] cargo update -p chrono --precise 0.4.39 成功; 本机缺 MSVC 无法 cargo check,
  修复与 arrow-rs#6600 官方 workaround 一致 (chrono >=0.4.38, <0.4.40)

src-tauri/Cargo.toml

@@ -19,7 +19,9 @@ serde_json = "1"
 duckdb = { version = "0.10", features = ["bundled"] }
 tokio = { version = "1", features = ["full"] }
 uuid = { version = "1", features = ["v4"] }
-chrono = { version = "0.4", features = ["serde"] }
+# 版本上限: chrono 0.4.40 起 Datelike 新增 quarter(), 与 arrow-arith 51 的
+# ChronoDateExt::quarter (duckdb 0.10.2 非可选依赖 arrow 51) 产生 E0034 方法歧义
+chrono = { version = ">=0.4.38, <0.4.40", features = ["serde"] }
 sha2 = "0.10"
 hex = "0.4"
 ctrlc = "3"