feat: Add WASM support and browser extension infrastructure

- Add WASM build target and dependencies for all crates.
- Implement IndexedDB-based persistent storage for WASM.
- Create browser extension infrastructure (UI, scripting, etc.).
- Integrate Rhai scripting engine for secure automation.
- Implement user stories and documentation for the extension.

kvstore/Cargo.toml

@@ -7,16 +7,18 @@ edition = "2021"
 path = "src/lib.rs"
 
 [dependencies]
+tokio = { version = "1.37", features = ["rt", "macros"] }
 async-trait = "0.1"
 js-sys = "0.3"
 wasm-bindgen = "0.2"
 wasm-bindgen-futures = "0.4"
 thiserror = "1"
-tempfile = "3"
-
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 sled = { version = "0.34" }
+
+[target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]
+tempfile = "3"
 tokio = { version = "1", features = ["rt-multi-thread", "macros"] }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]