chore: remove deprecated @crossmint/client-sdk-walletconnect package

[alfonso-paella]

Description

Removes the @crossmint/client-sdk-walletconnect package entirely from the SDK repo. The package has security vulnerabilities in its dependencies and the maintenance burden is not justified by usage.

Evidence for removal (gathered in this analysis):

• ~570 npm downloads/month (spiky pattern suggesting CI/bots, vs 102k for common-sdk-base)
• Zero production API hits in Datadog over 30 days
• Zero external dependents on all of public GitHub
• No internal consumers — crossbit-main's /wc and /api/walletConnect use @walletconnect/* protocol libs directly
• Prior removal attempt in Sept 2025 by Pablo Egido & Julio (never merged)

Confirmed with: Alberto Elias, Maximiliano Schultheis, and Alfonso in #proj-walletconnect-deprecation.

Follow-up: Run npm deprecate @crossmint/client-sdk-walletconnect \"This package is deprecated and no longer maintained.\" to mark the existing published versions as deprecated on the npm registry.

Test plan

• Verified pnpm install succeeds after removal (lockfile updated, 460 dependency lines removed)
• Verified pnpm lint passes with no new errors
• No other package in the repo imports or depends on this package

Package updates

No changeset added — this is a full package removal (not a version bump). The npm deprecation notice should be applied separately via CLI after merge.

Requested by: @alfonso-paella

[devin-ai-integration]

Original prompt from Alfonso

im thinking on deprecating packages/client/walletconnect in the SDK

can you help me make this decision?

1. check on datadog if it has usage
2. check fi theres any public download stats for it, as well as whether we use it on our other repos
3. check on the code the main maintainers, and give me the list so i can ask them

[devin-ai-integration]

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[changeset-bot]

⚠️ No Changeset found

Latest commit: e000112

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