Add Injective frontend wallet skill

[ckhbtc]

Summary

• add an injective-frontend-wallet skill for browser wallet signing flows
• document CosmJS compatibility checks for Injective EthAccount and ethsecp256k1 AuthInfo pubkeys
• add install docs and sample prompts

Validation

• git diff --cached --check before commit
• inspected skill frontmatter, README, and sample prompts

Context

This captures the failure modes seen when building Injective CosmWasm frontends with Keplr/Leap and generic CosmJS: unsupported /injective.types.v1beta1.EthAccount account parsing and invalid pubkey errors from /cosmos.crypto.secp256k1.PubKey in AuthInfo.

Summary by CodeRabbit

• Documentation
  • Added comprehensive documentation for the new "injective-frontend-wallet" skill, including installation instructions, usage guidance, troubleshooting reference materials, and sample prompts to support building and debugging Injective browser wallet transaction flows.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: d30238c1-b8bf-4865-8048-ae056e04436d

📥 Commits

Reviewing files that changed from the base of the PR and between ba428ea and 821a394.

📒 Files selected for processing (4)

• README.md
• skills/injective-frontend-wallet/README.md
• skills/injective-frontend-wallet/SKILL.md
• skills/injective-frontend-wallet/references/sample-prompts.md

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📝 Walkthrough

Walkthrough

This PR introduces the injective-frontend-wallet skill, a comprehensive guide for building and debugging Injective browser wallet transaction flows. It updates the project README, adds skill installation and usage documentation, provides detailed technical specification for Injective-specific signing paths and error handling, and includes example prompts.

Changes

Injective Frontend Wallet Skill Documentation

Layer / File(s)	Summary
Skill registration in project index README.md	Main repository README announces the injective-frontend-wallet skill with description of wallet signing and error handling, NPM installation, and link to skill's README.
Skill documentation and reference materials skills/injective-frontend-wallet/README.md, skills/injective-frontend-wallet/SKILL.md, skills/injective-frontend-wallet/references/sample-prompts.md	Skill's README provides installation and activation guidance; SKILL.md defines EthAccount signing validation, authInfo/SignDoc requirements, common error mappings, CosmJS patterns, swap-contract checklist, and regression test criteria; sample-prompts.md supplies example prompts for skill usage.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A skill for wallets, now documented true,
Injective transactions, signing paths anew,
EthAccount checks and errors mapped with care,
Sample prompts show agents what's waiting there! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Add Injective frontend wallet skill' directly and clearly describes the main change—adding a new skill to support Injective browser wallet signing flows.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/injective-frontend-wallet-skill

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