feat: add momentry_playground binary for development

- Add separate momentry_playground binary with distinct configuration
- Production (momentry): Port 3002, Redis prefix 'momentry:'
- Development (momentry_playground): Port 3003, Redis prefix 'momentry_dev:'
- Add SERVER_PORT and REDIS_KEY_PREFIX config via environment variables
- Replace all hardcoded Redis key prefixes with configurable values
- Create .env.development for playground environment settings
- Update .env with production defaults
- Add dotenv dependency for environment file loading

Configuration isolation allows running both binaries simultaneously
without port conflicts or Redis key collisions.

Cargo.toml

@@ -12,48 +12,85 @@ thiserror = "1.0"
 tokio = { version = "1", features = ["full"] }
 tracing = "0.1"
 tracing-subscriber = "0.3"
+once_cell = "1.19"
+dotenv = "0.15"
 
 # CLI
 clap = { version = "4", features = ["derive"] }
 
 # Async
 async-trait = "0.1"
+futures-util = "0.3"
 
 # Serialization
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
+chrono = { version = "0.4", features = ["serde"] }
 
 # UUID
 sha2 = "0.10"
 hex = "0.4"
+uuid = { version = "1.0", features = ["v4"] }
+
+# Security
+subtle = "2.5"
+aes-gcm = "0.10"
+base64 = "0.22"
+
+# Cache
+moka = { version = "0.12", features = ["future"] }
 
 # Database
-redis = { version = "0.25", features = ["tokio-comp"] }
-sqlx = { version = "0.8", features = ["runtime-tokio", "postgres", "sqlite", "json"] }
-mongodb = { version = "2", features = ["tokio-sync"] }
+redis = { version = "1.0", features = ["tokio-comp", "connection-manager"] }
+sqlx = { version = "0.8", features = ["runtime-tokio", "postgres", "sqlite", "json", "chrono"] }
+mongodb = { version = "2", features = ["tokio-runtime"] }
+bson = { version = "2", features = ["chrono-0_4"] }
 qdrant-client = "1.7"
+reqwest = { version = "0.12", features = ["json"] }
 
 # HTTP Server
 axum = "0.7"
 tower = "0.4"
 
+# API Documentation
+utoipa = { version = "4", features = ["axum_extras", "chrono", "uuid"] }
+utoipa-swagger-ui = { version = "7", features = ["axum"] }
+
 # File watching
 notify = "6"
 
-# Video/Audio
-sdl2 = "0.38"
+# Logging
+env_logger = "0.11"
 
-# Configuration
-dotenv = "0.15"
+# Hash
+md5 = "0.7"
 
-[features]
-default = []
-dev = []
+# TUI
+ratatui = "0.28"
+crossterm = "0.28"
+
+# Terminal
+atty = "0.2"
+
+# System
+libc = "0.2"
 
 [lib]
 name = "momentry_core"
 path = "src/lib.rs"
 
+[features]
+default = []
+player = []
+
 [[bin]]
 name = "momentry"
 path = "src/main.rs"
+
+[[bin]]
+name = "momentry_player"
+path = "src/player/main.rs"
+
+[[bin]]
+name = "momentry_playground"
+path = "src/playground.rs"