feat: add corex-storage crate for unified storage abstraction

- Introduced corex-storage crate with support for local disk, S3-compatible, and Google Cloud Storage backends.
- Implemented StorageDriver trait for various storage backends.
- Added LocalFileStorage for local disk operations.
- Added S3Storage for S3-compatible object storage with multipart upload support.
- Added GcsStorage for Google Cloud Storage operations.
- Included error handling for storage operations.
- Added tests for each storage backend to ensure functionality.
- Created README.md for documentation and usage examples.
- Added Apache and MIT licenses for open-source compliance.

crates/mytheclipse-crypto/README.md

@@ -0,0 +1,36 @@
+# corex-crypto
+
+Safe, one-line security helpers that are easy to get wrong when hand-rolled:
+
+- **Argon2id** password hashing & verification (PHC-encoded, RFC 9106-style).
+- **AES-256-GCM** authenticated encryption with a fresh random nonce per op.
+- **JWT** (HS256) token generation & validation.
+- **Key rotation** via `KeyRing` — reads keep working with the previous key
+  during a rotation window.
+
+## Features
+
+- `password` (default) — Argon2id hashing.
+- `encryption` (default) — AES-256-GCM.
+- `tokens` (default) — JSON Web Tokens.
+
+Zero features enabled by default? No — all three are on, but each is cheap and
+independent.
+
+## Usage
+
+```rust
+use corex_crypto::{PasswordHasher, Encryptor, TokenSigner};
+
+let hasher = PasswordHasher::new();
+let hash = hasher.hash("letmein").unwrap();
+assert!(hasher.verify(&hash, "letmein"));
+
+let enc = Encryptor::new(&[0u8; 32]);
+let (nonce, ct) = enc.encrypt(b"secret");
+assert_eq!(enc.decrypt(&nonce, &ct).unwrap(), b"secret");
+
+let signer = TokenSigner::new("my-secret");
+let token = signer.sign(&serde_json::json!({"sub":"u1"}), std::time::Duration::from_secs(3600)).unwrap();
+assert_eq!(signer.verify(&token).unwrap()["sub"], "u1");
+```