chore: update the Rust readme (#4968)

### Description

Mostly mentions the new Rust workspace split

### Drive-by changes

None

### Related issues

None

### Backward compatibility

Yes

### Testing

None

rust/README.md

@@ -15,6 +15,15 @@ info: This is the version for the rustup toolchain manager, not the rustc compil
 info: The currently active `rustc` version is `rustc 1.72.1 (d5c2e9c34 2023-09-13)`
 ```
 
+### Overview of Rust Workspaces
+
+There are two Rust workspaces in this directory:
+
+- [main](https://github.com/hyperlane-xyz/hyperlane-monorepo/tree/main/rust/main): The offchain agents workspace, most notably comprised of the relayer, validator, scraper and the Rust end-to-end tests (in `utils/run-locally`)
+- [sealevel](https://github.com/hyperlane-xyz/hyperlane-monorepo/tree/main/rust/sealevel): Hyperlane smart contracts and tooling for the SVM, implemented in native Rust.
+
+You can only run `cargo build` after `cd`-ing into one of these workspaces.
+
 #### Apple Silicon
 
 If your device has an Apple Silicon processor, you may need to install Rosetta 2:
@@ -23,7 +32,9 @@ If your device has an Apple Silicon processor, you may need to install Rosetta 2
 softwareupdate --install-rosetta --agree-to-license
 ```
 
-### Running Locally
+### Running Agents Locally
+
+Make sure you're in the `main` workspace.
 
 To run the validator, run:
 
@@ -174,7 +185,7 @@ For Ethereum and Celo connections we use
 We use the tokio async runtime environment. Please see the docs
 [here](https://docs.rs/tokio/1.1.0/tokio/).
 
-### Repo layout
+### `main` workspace layout
 
 - `hyperlane-base`
   - lowest dependency hyperlane utilities
@@ -190,11 +201,9 @@ We use the tokio async runtime environment. Please see the docs
     - traits (interfaces) for the on-chain contracts
     - model implementations of the contracts in rust
     - merkle tree implementations (for provers)
-- `chains/hyperlane-ethereum`
+- `chains/hyperlane-*`
+  - VM-specific integration of the agents
   - depends on hyperlane-core (and transitively hyperlane-base)
-  - interfaces to the ethereum contracts
-- `chains/hyperlane-fuel`
-  - depends on hyperlane-core
-  - interfaces to the fuel contracts
+  - interfaces with the contracts of that VM (e.g `ethereum`, `sealevel`, `cosmos`, `fuel`, etc)
 - `agents`
   - each of the off-chain agents implemented thus far

typescript/sdk/CHANGELOG.md

@@ -11,7 +11,7 @@
 - 24784af95: Introduce GcpValidator for retrieving announcements, checkpoints and metadata for a Validator posting to a GCP bucket. Uses GcpStorageWrapper for bucket operations.
 - 3e8dd70ac: Update validators for boba, duckchain, unichain, vana, bsquared, superseed. Update oort's own validator. Update blockpi's viction validator. Adad luganodes/dsrv to flame validator set.
 - aa1ea9a48: updates the warp deployment config schema to be closer to the ica routing schema
-- f0b98fdef: Updated the derivation logic to enable ICA ISM metdata building from on chain data to enable self relaying of ICA messages
+- f0b98fdef: Updated the derivation logic to enable ICA ISM metadata building from on chain data to enable self relaying of ICA messages
 - ff9e8a72b: Added a getter to derive ATA payer accounts on Sealevel warp routes
 - 97c1f80b7: Implement Sealevel IGP quoting
 - 323f0f158: Add ICAs management in core apply command