Merge branch 'master'

.clabot

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+{
+  "contributors": "https://api.github.com/repos/OffchainLabs/clabot-config/contents/nitro-contributors.json",
+  "message": "We require contributors to sign our Contributor License Agreement. In order for us to review and merge your code, please sign the linked documents below to get yourself added. https://na3.docusign.net/Member/PowerFormSigning.aspx?PowerFormId=b15c81cc-b5ea-42a6-9107-3992526f2898&env=na3&acct=6e152afc-6284-44af-a4c1-d8ef291db402&v=2",
+  "label": "s"
+}

.dockerignore

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+**/.github
+.make
+**/.dockerignore
+**/Dockerfile
+**/.gitignore
+**/.git
+**/.gitmodules
+go-ethereum/tests
+**/*.yml
+contracts/build
+contracts/cache/
+safe-smart-account/build/
+# solgen/go
+**/node_modules
+
+target/**/*
+!target/machines
+!target/machines/*
+!target/machines/**/*
+brotli/buildfiles/**/*
+
+# these are used by environment outside the docker:
+nitro-testnode/**/*
+
+# Arbitrator ignores
+arbitrator/tools/module_roots
+arbitrator/tools/pricer
+
+# Rust outputs
+arbitrator/target/**/*
+arbitrator/target
+arbitrator/stylus/tests/*/target/
+arbitrator/wasm-testsuite/target/
+arbitrator/wasm-libraries/target/
+arbitrator/tools/wasmer/target/
+arbitrator/tools/wasm-tools/
+arbitrator/tools/pricers/
+arbitrator/tools/module_roots/
+arbitrator/langs/rust/target/
+arbitrator/langs/bf/target/
+
+# Compiled files
+**/*.o
+**/*.a
+*.wasm
+
+# Autogenerated test files
+arbitrator/prover/test-cases/**/*
+arbitrator/prover/test-cases
+
+# external tools and IDEs
+.vscode

.gitignore

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+/record
+/cmd/record/record
+/replay
+/cmd/replay/replay
+/*.bin
+/*.test
+/system_tests/*_fuzz/*
+!/system_tests/*_fuzz/*_fuzz.go
+node_modules
+.DS_Store
+.idea
+.vscode
+cmd/node/data
+cmd/node/node
+solgen/go/
+.make/
+/cmd/statetransfer/statetransfer
+/reproducible-wasm/*.wasm
+target/
+yarn-error.log
+local/
+system_tests/test-data/*
+.configs/
+system_tests/testdata/*
+arbos/testdata/*
+keys/*

.gitmodules

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+[submodule "fastcache"]
+	path = fastcache
+	url = https://github.com/OffchainLabs/fastcache
+[submodule "nitro-testnode"]
+	path = nitro-testnode
+	url = https://github.com/OffchainLabs/nitro-testnode
+[submodule "fhevm-go"]
+	path = fhevm-go
+	url = [email protected]:z1labs/Cypher-fhEVM-Go.git
+[submodule "go-ethereum"]
+	path = go-ethereum
+	url = [email protected]:z1labs/Cypher-Go-Ethereum.git
+[submodule "safe-smart-account"]
+	path = safe-smart-account
+	url = https://github.com/safe-global/safe-smart-account.git
+[submodule "contracts"]
+	path = contracts
+	url = https://github.com/OffchainLabs/nitro-contracts

.golangci.yml

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+# golangci-lint configuration
+
+run:
+  timeout: 10m
+
+issues:
+  exclude-dirs:
+    - go-ethereum
+    - fastcache
+  exclude-rules:
+    - path: _test\.go
+      linters:
+        - staticcheck
+
+linters:
+  enable:
+    - asciicheck  # check for non-ascii characters
+    - errorlint   # enure error wrapping is safely done
+    - gocritic    # check for certain simplifications
+    - gofmt       # ensure code is formatted
+    - gosec       # check for security concerns
+    - nilerr      # ensure errors aren't mishandled
+    - staticcheck # check for suspicious constructs
+    - unused      # check for unused constructs
+
+linters-settings:
+  errcheck:
+    # report when type assertions aren't checked for errors as in
+    #         a := b.(MyStruct)
+    #
+    check-type-assertions: true
+
+  gocritic:
+    disabled-tags:
+      - experimental
+      - opinionated
+
+    disabled-checks:
+      - ifElseChain
+      - assignOp
+      - unlambda
+      - exitAfterDefer
+
+  gosec:
+    excludes:
+      - G404  # checks that random numbers are securely generated
+      - G402
+
+  govet:
+    enable-all: true
+    disable:
+      - shadow
+      - fieldalignment

.nvmrc

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+18