Simplify README and add storage engines table (#9)

* docs(core): simplify README and add storage engines table

- Reduce README from 764 to 182 lines
- Add clear storage engines comparison table
- Remove verbose interface definitions
- Consolidate examples for brevity
- Keep essential documentation for quick reference

* docs: fix redis version from v3.x to v4.x

* docs(core): add ADVANCED.md with detailed reference material

Move interface definitions, detailed storage configuration examples,
@MultiCache in-depth documentation, and error handling patterns to
a separate file for advanced users and custom storage implementors.

* Simplify README and add storage engines table

Updated README to simplify content and included a table for storage engines.

* style: apply prettier formatting

* docs: update CLAUDE.md to vitest and redis v4.x

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: simllll

.changeset/tiny-schools-lick.md

@@ -0,0 +1,5 @@
+---
+"@node-ts-cache/core": patch
+---
+
+Simplify README and add storage engines table

CLAUDE.md

@@ -61,14 +61,14 @@ Always run these checks before committing:
 │   └── test/              # Test files
 ├── storages/              # Storage adapter packages
 │   ├── lru/               # LRU cache storage
-│   ├── redis/             # Redis storage (redis package v3.x)
+│   ├── redis/             # Redis storage (redis package v4.x)
 │   ├── redisio/           # Redis storage (ioredis with compression)
 │   ├── node-cache/        # node-cache storage
 │   └── lru-redis/         # Two-tier LRU + Redis storage
 ```
 
 ## Testing Framework
 
-- Uses Mocha with ts-node ESM loader
+- Uses Vitest
 - Tests use Node's built-in `assert` module
 - Mock Redis instances using `redis-mock` and `ioredis-mock`

README.md

@@ -50,7 +50,7 @@ This is a monorepo containing the following packages:
 
 | Package                                                    | Version                                                                    | Description                                            |
 | ---------------------------------------------------------- | -------------------------------------------------------------------------- | ------------------------------------------------------ |
-| [@node-ts-cache/redis-storage](./storages/redis)           | ![npm](https://img.shields.io/npm/v/@node-ts-cache/redis-storage.svg)      | Redis storage using `redis` package (v3.x)             |
+| [@node-ts-cache/redis-storage](./storages/redis)           | ![npm](https://img.shields.io/npm/v/@node-ts-cache/redis-storage.svg)      | Redis storage using `redis` package (v4.x)             |
 | [@node-ts-cache/ioredis-storage](./storages/redisio)       | ![npm](https://img.shields.io/npm/v/@node-ts-cache/ioredis-storage.svg)    | Redis storage using `ioredis` with compression support |
 | [@node-ts-cache/node-cache-storage](./storages/node-cache) | ![npm](https://img.shields.io/npm/v/@node-ts-cache/node-cache-storage.svg) | In-memory cache using `node-cache`                     |
 | [@node-ts-cache/lru-storage](./storages/lru)               | ![npm](https://img.shields.io/npm/v/@node-ts-cache/lru-storage.svg)        | LRU cache with automatic eviction                      |
@@ -96,7 +96,7 @@ For detailed documentation, see the [main package README](./ts-cache/README.md).
 | **FsJsonStorage**       | Async | Persistent local cache       | File-based, survives restarts |
 | **NodeCacheStorage**    | Sync  | Production single-instance   | TTL support, multi-ops        |
 | **LRUStorage**          | Sync  | Memory-constrained apps      | Auto-eviction, size limits    |
-| **RedisStorage**        | Async | Distributed systems          | Shared cache, legacy redis    |
+| **RedisStorage**        | Async | Distributed systems          | Shared cache, redis v4        |
 | **RedisIOStorage**      | Async | Distributed systems          | Compression, modern ioredis   |
 | **LRUWithRedisStorage** | Async | High-performance distributed | Local + remote tiers          |