chore: update pnpm configuration

[p-iknow]

Summary

• Pin the project package manager to pnpm 11.1.1 with integrity metadata.
• Remove redundant pnpm peer/hoist settings from .npmrc.
• Drop .nvmrc and add mise.toml as the Node version source for local and CI setup.
• Update CI, publish-comment, and release workflows to install Node through jdx/mise-action while keeping setup-node for pnpm cache and npm registry configuration.

Test

• git diff --check
• ruby -e 'require "yaml"; ARGV.each { |f| YAML.load_file(f); puts f }' .github/workflows/ci.yml .github/workflows/publish-comment.yml .github/workflows/release.yml\n- [x] mise ls --current\n- [ ] pnpm format:check .github/workflows/ci.yml .github/workflows/publish-comment.yml .github/workflows/release.yml mise.toml (blocked: pnpm attempted to purge node_modules and aborted in non-TTY)