feat: Refactor coverage_type to use u32, update contract event topi…

data_migration/README.md

@@ -0,0 +1,27 @@
+# Data Migration
+
+Utility library for exporting and importing contract state snapshots for RemitWise.
+
+## Features
+
+- **Multi-format Support**: JSON, Binary (Bincode), CSV, and Encrypted.
+- **Integrity Checks**: SHA-256 checksum validation for all snapshots.
+- **Version Compatibility**: Enforces semantic versioning rules for snapshots (`MIN_SUPPORTED_VERSION`).
+- **Replay Protection**: The `MigrationTracker` prevents duplicate/repeated imports of the same snapshot by tracking checksum/version pairs.
+
+## Replay Protection
+
+To prevent accidental double-restores or replaying of old data, all import functions (`import_from_json`, `import_from_binary`) require a `MigrationTracker`.
+
+```rust
+use data_migration::{MigrationTracker, import_from_json};
+
+let mut tracker = MigrationTracker::new();
+let result = import_from_json(&mut tracker, json_data);
+
+if let Err(MigrationError::DuplicateImport) = result {
+    println!("This snapshot has already been processed!");
+}
+```
+
+The tracker should be persisted or maintained throughout the lifecycle of the migration process to ensure consistent protection.

insurance/Cargo.toml

@@ -7,10 +7,13 @@ edition = "2021"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-soroban-sdk = "21.0.0"
+soroban-sdk = "=21.7.7"
+remitwise-common = { path = "../remitwise-common" }
 
 [dev-dependencies]
-soroban-sdk = { version = "21.0.0", features = ["testutils"] }
+proptest = "1.10.0"
+soroban-sdk = { version = "=21.7.7", features = ["testutils"] }
+testutils = { path = "../testutils" }
 
 [profile.release]
 opt-level = "z"

insurance/README.md

@@ -172,7 +172,7 @@ Owner-only. Updates or clears the `external_ref` field of a policy.
 
 Owner-only. Marks a policy as inactive and removes it from the active-policy list.
 
-**Emits**: `PolicyDeactivatedEvent`
+This function is **idempotent**: if the policy is already inactive, it returns `false` without emitting duplicate events or updating storage.
 
 ---