fix: fix SQLite migrations, update docs

.gitignore

@@ -2,4 +2,5 @@ target/
 .env.test
 .env.dev
 .vscode
-sites/
+sites/
+*.db*

migrations/README.md

@@ -24,6 +24,10 @@ Example:
 
 ### SQLite
 ```bash
+# Create the database if it doesn't exist
+sqlx database create --database-url sqlite://path/to/database.db
+
+# Run migrations
 sqlx migrate run --database-url sqlite://path/to/database.db --source migrations/sqlite
 ```
 

src/storage/sqlite/oauth_request_storage.rs

@@ -159,7 +159,6 @@ impl OAuthRequestRow {
             oauth_state: self.oauth_state,
             issuer: self.issuer,
             authorization_server: self.authorization_server,
-            did: String::new(), // Empty string - field will be ignored
             nonce: self.nonce,
             pkce_verifier: self.pkce_verifier,
             signing_public_key: self.signing_public_key,
@@ -193,7 +192,6 @@ mod tests {
             oauth_state: "test-state-123".to_string(),
             issuer: "https://pds.example.com".to_string(),
             authorization_server: "https://pds.example.com".to_string(),
-            did: String::new(),
             nonce: "test-nonce".to_string(),
             pkce_verifier: "test-verifier".to_string(),
             signing_public_key: "test-public-key".to_string(),