docs: merge verify and onchain-verify (#1089)

book/src/advanced-usage/sdk.md

@@ -147,7 +147,7 @@ assert!(success);
 > ⚠️ **WARNING**  
 > The aggregation proving key `agg_pk` above is large. Avoid cloning it if possible.
 
-Note that `DEFAULT_PARAMS_DIR` is the directory where Halo2 parameters are stored by the `cargo openvm setup` CLI command. For more information on the setup process, see the [onchain verify](../writing-apps/onchain-verify.md) doc.
+Note that `DEFAULT_PARAMS_DIR` is the directory where Halo2 parameters are stored by the `cargo openvm setup` CLI command. For more information on the setup process, see the `EVM Level` section of the [verify](../writing-apps/verify.md) doc.
 
 > ⚠️ **WARNING**  
 > `cargo openvm setup` requires very large amounts of computation and memory (~200 GB).

book/src/writing-apps/verify.md

@@ -31,21 +31,31 @@ svm use 0.8.19
 ```
 
 ### Generating the Aggregation Proving Key and EVM Verifier Contract
-Generate the aggregation proving key and verifier contract at `~/.openvm/agg.pk` and `~/.openvm/verifier.sol` respectively by running
+
+The workflow for generating an end-to-end EVM proof requires first generating an aggregation proving key and EVM verifier contract. This can be done by running the following command:
 
 ```bash
 cargo openvm setup
 ```
 > ⚠️ **WARNING**  
 > This command requires very large amounts of computation and memory (~200 GB).
 
+Upon a successful run, the command will write `agg.pk` and `verifier.sol` to `~/.openvm/`, where `~` is the directory specified by environment variable `$HOME`. Every command that requires these files will look for them in this directory.
+
+> ⚠️ **WARNING**  
+> If the `$HOME` environment variable is not set, this command may fail.
+
+Note that `cargo openvm setup` may attempt to download other files (i.e. KZG parameters) from an AWS S3 bucket into `~/.openvm/`.
+
 This command can take ~20mins on a `m6a.16xlarge` instance due to the keygen time.
 
-### Verify proof
-Verifying a proof at the EVM level requires just the proof, as the command uses the verifier generated when `cargo openvm setup` was called.
+## Generating and Verifying an EVM Proof
+
+To generate and verify an EVM proof, you need to run the following commands:
 
 ```bash
+cargo openvm prove evm --input <path_to_input>
 cargo openvm verify evm --proof <path_to_proof>
 ```
 
-If `proof` is omitted, the command will search for the proof at `./openvm/evm.proof`.
+If `proof` is omitted, the `verify` command will search for the proof at `./openvm/evm.proof`.