v0.2.0 - TOML manifest, multi-PAT support, and migrate hardening

What's Changed

Features

• TOML manifest support: multi-PAT and multi-connection management via sfutils-manifest.toml (fcf20c8)

Fixes

• Rename updated_at to rotated_at for semantic clarity (1bb3274)
• Use sfutils-manifest.md as primary source of truth in migrate with connection picker (b84764e)
• infra_ready now reflects actual sf_utils_db resolution state (ce70854)
• Surface infra_ready=false in validate output and fix migrate status reporting (3dde773)
• Remove stale same-user entries with different labels during migration (713690a)

Full Changelog

v0.1.0...v0.2.0