feat: add cozodb (#77)

Author: oScape

hoddor/Cargo.toml

@@ -10,14 +10,9 @@ crate-type = ["cdylib", "rlib"]
 
 [features]
 default = ["vault", "graph"]
-
-# Vault: Core functionality - encrypted vaults with namespaces, WebAuthn, etc.
-# This is the base feature of Hoddor
 vault = ["console_error_panic_hook"]
-
-# Graph: Adds graph database with vector search
-# Requires vault for persistence and encryption
-graph = ["vault", "uuid"]
+# Graph database with CozoDB (Datalog queries + HNSW vector index for RAG)
+graph = ["vault", "uuid", "cozo", "ndarray"]
 
 [dependencies]
 once_cell = "1.20.2"
@@ -61,6 +56,8 @@ x25519-dalek = { version = "2.0.1", features = ["static_secrets"] }
 async-trait = "0.1.89"
 
 uuid = { version = "1.11", features = ["v4", "serde", "js"], optional = true }
+cozo = { version = "0.7", default-features = false, features = ["wasm"], optional = true }
+ndarray = { version = "0.15", optional = true }
 
 [dependencies.web-sys]
 version = "0.3.77"

hoddor/src/adapters/mod.rs

@@ -15,9 +15,5 @@ pub use native::{
 pub mod shared;
 pub use shared::{AgeEncryption, AgeIdentity, Argon2Kdf};
 
-#[cfg(feature = "graph")]
-#[path = "wasm/simple_graph.rs"]
-mod simple_graph;
-
-#[cfg(feature = "graph")]
-pub use simple_graph::SimpleGraphAdapter as Graph;
+#[cfg(all(feature = "graph", target_arch = "wasm32"))]
+pub use wasm::CozoGraphAdapter as Graph;