feat: implement integration tests

- Sanity tests for the TS to Tauri commands
- Tests for wrapper.rs, to which the commands directly delegate
- Remove (up til now) unused code from lib.rs
- Configure to run all tests in CI

Author: pmorris-dev

.github/workflows/ci.yml

@@ -59,5 +59,5 @@ jobs:
          - name: Run cargo check
            run: cargo check --workspace --all-targets
 
-         - name: Run cargo tests
-           run: cargo test --workspace
+         - name: Run TypeScript and Rust tests
+           run: npm test

Cargo.lock

@@ -33,3 +33,7 @@ sqlx-sqlite-conn-mgr = { path = "crates/sqlx-sqlite-conn-mgr" }
 
 [build-dependencies]
 tauri-plugin = { version = "2.5.1", features = ["build"] }
+
+[dev-dependencies]
+tempfile = "3.23.0"
+tokio = { version = "1.48.0", features = ["rt-multi-thread", "macros"] }