Learn: Cheat sheet — viem + wagmi common patterns (slice of #33)

[PetarStoev02]

Context

This is a focused slice of #33 (Cheat sheets). viem and wagmi are the modern EVM frontend stack — but the docs are large and developers waste time hunting the same 10 patterns. A single cheat sheet collects them.

What to build

Add cheat-sheets/viem-wagmi-patterns.md with concise, copy-pasteable snippets for:

viem core:

• Create a public client (read) and a wallet client (write)
• Read a contract (readContract)
• Write to a contract (writeContract + waitForTransactionReceipt)
• Watch events (watchContractEvent)
• Get the current chain, switch chains
• Encode/decode function data

wagmi hooks:

• useAccount, useConnect, useDisconnect
• useReadContract, useWriteContract
• useWatchContractEvent
• useSwitchChain, useBalance

Each snippet should be a self-contained TypeScript code block, not a full app. Order from "most-used" to "less-used".

Acceptance criteria

• cheat-sheets/viem-wagmi-patterns.md exists and renders cleanly
• Covers at least 6 viem patterns and 6 wagmi hooks
• Every snippet is valid TypeScript and uses current API versions
• At least one "gotcha" called out (e.g., reading after a write, RPC rate limits)
• Linked from the cheat-sheets index when one exists

Pointers

• Slice of: Content: Cheat sheets (RPC methods, token standards) #33
• Reference: viem.sh, wagmi.sh
• Related: learn Recipe: Wallet connection for modern dApps (wagmi + viem + RainbowKit) #13 (Recipe: Wallet connection)

Complexity

🟢 Good first issue

[peter941221]

I'd like to work on this.