4.0.0-rc.18

What's Changed

• docs: 4.x migration guide and ESM-only code samples by @DavertMik in #5538
• feat(list): add -c, --docs, and --action flags by @DavertMik in #5541
• feat(plugins): unify screenshot/pause/aiTrace/heal under shared on= parameter by @DavertMik in #5542
• feat(mcp): snapshot tool + run_code return/console capture + storage state + HTML cleanup by @DavertMik in #5537
• feat(plugins): add screencast plugin (replaces subtitles) by @DavertMik in #5543
• feat(mcp): pause_session tool + MCP-aware pause() yield mode by @DavertMik in #5544
• feat(dry-run): step numbering + --no-ansi flag by @DavertMik in #5546
• feat(mcp): per-test plugin overrides + shell session lifecycle by @DavertMik in #5547

Full Changelog: 4.0.0-rc.17...4.0.0-rc.18