feat: update services to include transaction handling and refactor database connection setup

Cargo.lock

@@ -1166,20 +1166,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "decimal"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a8ab77e91baeb15034c3be91e87bff4665c9036216148e4996d9a9f5792114d"
-dependencies = [
- "bitflags 1.3.2",
- "cc",
- "libc",
- "ord_subset",
- "rustc-serialize",
- "serde",
-]
-
 [[package]]
 name = "der"
 version = "0.7.10"
@@ -3270,12 +3256,6 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
 
-[[package]]
-name = "ord_subset"
-version = "3.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fdcf5505c0f054ce51fa0fa74142738930a45d5ac1faacae4dd4e2f54afe00fa"
-
 [[package]]
 name = "ordered-float"
 version = "4.6.0"
@@ -3301,14 +3281,15 @@ version = "0.1.0"
 dependencies = [
  "async-trait",
  "chrono",
- "decimal",
  "migration",
+ "rust_decimal",
  "sea-orm",
  "serde",
  "serde_json",
  "tauri",
  "tauri-build",
  "tauri-plugin-opener",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -4007,12 +3988,6 @@ version = "2.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94300abf3f1ae2e2b8ffb7b58043de3d399c73fa6f4b73826402a5c457614dbe"
 
-[[package]]
-name = "rustc-serialize"
-version = "0.3.25"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe834bc780604f4674073badbad26d7219cadfb4a2275802db12cbae17498401"
-
 [[package]]
 name = "rustc_version"
 version = "0.4.1"