fix(wallet-integration): wrap top-level await, add npm versions and evals

[marc0olo]

Summary

Wraps all top-level await in code examples, adds npm package versions to prerequisites, strengthens the async wrapping signal, and creates the first evaluation suite.

Mentions #97, #95, #96, #100.

Changes

Skill (wallet-integration/SKILL.md):

• Wrap all await in named async functions across 7 code blocks (connectWallet, icpWalletTransfers, icrcWalletTransfers, queryAndDisconnect, safeTransfer, connectLocalWallet, connectPseudoWallet, connectMainnetWallet)
• Add npm versions to prerequisites (@dfinity/oisy-wallet-signer >= 4.1.0, @dfinity/utils >= 4.2.0, @dfinity/zod-schemas >= 3.2.0, @icp-sdk/canisters >= 3.5.0, @icp-sdk/core >= 5.0.0)
• Add explicit note and code comment explaining why wallet operations must be wrapped in async functions (Vite's default es2020 target lacks top-level await)
• Remove generic "running local network" prerequisite (covered by icp-cli skill)

Evaluations (evaluations/wallet-integration.json): New file with 4 output evals + 12 trigger evals

• No top-level await in wallet code (Vite context)
• IcpWallet vs IcrcWallet class selection
• Error handling pattern (RelyingPartyResponseError codes)
• Signer implementation (all 4 required prompts)

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