add cheat sheet and roadmap updates

Author: kmurphypolygon

docs/cdk/erigon/network-recovery.md

@@ -0,0 +1,38 @@
+CDK-erigon supports two simple methods for network recovery:
+
+- Partial L1 recovery; from a partially synced datadir.
+- Full L1 recovery; from a completely empty datadir.
+
+## Partial recovery
+
+### Sync limit step
+
+First, find out the following:
+
+- What batch to set as the first batch to start recovering from.
+- What is the last block of the batch prior to this. It can be found by querying the RPC or checking the L1 data from the sequencer contract.
+
+Once we know the last block number, we can begin a fresh sync to get to that block height. To do this use the same configuration that you would normally use for the network but add an additional flag in `--zkevm.sync-limit=[block you need + 1]`. 
+
+!!! info "Example"
+    In order to sync to block 100, enter `101` for the flag value. 
+
+Let the node run and it eventually sits in a loop at this block height. Once the node reaches the required height, you can stop the node as normal. 
+
+### L1 recovery step
+
+First determine the earliest L1 block height suitable for recovery. 
+
+You can do this by looking for the L1 block number for the earliest transaction against the sequencer contract (found in the cdk-erigon config). 
+
+Once you have the info you need, start the node up with a new flag: `zkevm.l1-sync-start-block=[l1block height]`.
+
+!!! important
+    Remove the `zkevm.sync-limit` flag from the previous step at this point if you are running a partial recovery. 
+    
+It is important to pick the earliest block on the network so that the L1 info tree update events are gathered correctly. If not, you run the risk of the indexes
+not lining up.
+
+## Full recovery
+
+Follow the L1 recovery step as above, and use a completely fresh datadir.

docs/cdk/erigon/releases.md

@@ -12,6 +12,6 @@ At the time of writing, `cdk-erigon` supports the following chains and fork ids:
 
 ## Roadmap
 
-- `v0.9.x`: Support for the Polygon Cardona testnet.
-- `v1.x.x`: Support for Polygon mainnet.
+- `v1.x.x`: Support for the Polygon Cardona testnet.
+- `v1.x.x`: Support for Polygon zkEVM mainnet.
 - `v3.x.x`: Erigon 3 based (snapshot support).

mkdocs.yml

@@ -72,6 +72,7 @@ nav:
         - Deploy a node: cdk/erigon/deploy-cdk-erigon.md
         - How to:
           - Configure chains dynamically: cdk/erigon/chain-config.md
+          - Recover the network: cdk/erigon/network-recovery.md
       - Architecture:
         - CDK rollup: cdk/architecture/cdk-zkevm.md
         - CDK validium: cdk/architecture/cdk-validium.md