fix: implement devtooling automation 1014-1017

[Neola06]

• Implement automated changelog from conventional commits #1014: add changelog workflow, tighten commitlint rules, update CHANGELOG.md with conventional commits docs
• Implement bundle size monitoring with regression alerts #1015: enable size-limit regression prevention, update bundle-analysis workflow with alerts and reporting
• Implement dependency automation with Renovate/Dependabot #1017: add renovate.json dependency automation config, enhance dependabot grouping and labels
• Implement code coverage reporting with thresholds #1016: add jest coverage thresholds, create codecov.yml, add coverage workflow with PR comments

Pull Request Checklist

Quality Gates (All must pass before merge)

• Lint: Code passes ESLint and Prettier checks
• Type Check: TypeScript compilation succeeds
• Tests: All tests pass
• Build: Project builds successfully
• Rust Format: Smart contract formatting is correct
• Rust Clippy: Smart contract linting passes
• Rust Tests: All smart contract tests pass
• Rust Build: Smart contracts compile successfully

Additional Requirements

• New code has appropriate TypeScript types
• No hardcoded secrets or credentials
• New features have corresponding tests
• Documentation updated if needed

Reviewers

• At least 1 approval required for merge
• All CI checks must be green

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This PR will not be mergeable until all quality gates pass.
closes
closes #1014
closes #1015
closes #1016
closes #1017

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