test(admin-api): add integration tests for job deletion endpoints

tests/Cargo.toml

@@ -57,6 +57,7 @@ reqwest.workspace = true
 rustls.workspace = true
 serde.workspace = true
 serde_json.workspace = true
+sqlx = { version = "0.8.3", features = ["postgres", "runtime-tokio"] }
 serde_yaml.workspace = true
 server = { path = "../crates/services/server" }
 solana-datasets = { path = "../crates/extractors/solana" }

tests/src/testlib/ctx.rs

@@ -731,6 +731,14 @@ impl TestCtx {
     pub fn new_ampctl(&self) -> Ampctl {
         Ampctl::new(self.daemon_controller_fixture.admin_api_url())
     }
+
+    /// Get a reference to the metadata database connection pool.
+    ///
+    /// Use this to run direct database queries against the metadata database
+    /// in integration tests (e.g., to verify cascade deletes across tables).
+    pub fn metadata_db(&self) -> &metadata_db::MetadataDb {
+        self._metadata_db_fixture.conn_pool()
+    }
 }
 
 /// Helper type for specifying dataset manifest registrations.