feat: add PostgreSQL schema isolation for playground environment

- Create schema.rs utility module with table_name() function
- Add schema prefix to all SQL queries in postgres_db.rs
- Support dev schema for playground, public for production
- Add DATABASE_SCHEMA, MONGODB_DATABASE, QDRANT_COLLECTION config
- Fix 40+ functions including videos, chunks, frames, vectors, etc.
- Update Cargo dependencies

src/core/config.rs

@@ -78,6 +78,15 @@ pub static SERVER_PORT: Lazy<u16> = Lazy::new(|| {
 pub static REDIS_KEY_PREFIX: Lazy<String> =
     Lazy::new(|| env::var("MOMENTRY_REDIS_PREFIX").unwrap_or_else(|_| "momentry:".to_string()));
 
+pub static DATABASE_SCHEMA: Lazy<String> =
+    Lazy::new(|| env::var("DATABASE_SCHEMA").unwrap_or_else(|_| "public".to_string()));
+
+pub static MONGODB_DATABASE: Lazy<String> =
+    Lazy::new(|| env::var("MONGODB_DATABASE").unwrap_or_else(|_| "momentry".to_string()));
+
+pub static QDRANT_COLLECTION: Lazy<String> =
+    Lazy::new(|| env::var("QDRANT_COLLECTION").unwrap_or_else(|_| "momentry_rule1".to_string()));
+
 pub mod processor {
     use super::*;