Spec Kit - 0.16.0

Install

uv tool install specify-cli --from git+https://github.com/github/spec-kit.git@v0.16.0
specify init my-project

⚠️ Copilot default changed: specify init --integration copilot now installs skills (.github/skills/speckit-*/SKILL.md) by default instead of commands. Use --integration-options="--commands" for the previous behavior; existing command-layout projects are preserved on upgrade.

What's Changed

• chore: bump version to 0.16.0
• fix: keep long frontmatter values on a single line (#3989)
• fix: skip corrupted run state files in list_runs (#3817)
• fix: skip corrupted run state files in list_runs (#3814)
• Add July 2026 newsletter (#3987)
• fix(presets): start fresh on a non-UTF-8 preset registry (#3955)
• docs: clarify agent PR review prioritization (#3985)
• fix(events): preserve a non-UTF-8 config.toml on hook install/teardown (#3963)
• fix(extensions): treat an unreadable staged backup as a conflict (#3962)
• fix(manifests): reject non-string requires.speckit_version (#3980)
• fix(extensions): reject reinstall when a kept config cannot be read (#3960)
• [extension] Update Charter extension to v0.5.1 (#3983)
• fix(events): return None for an unparseable script command (#3957)
• feat(events): context injection for opencode and JSON-envelope agent hooks (#3934)
• Add TDD Extension to community catalog (#3982)
• Update Archive Extension to v1.1.0 (#3981)
• feat(copilot): default integration to skills (#3976)
• fix(events): ignore non-UTF-8 event overrides (#3897)
• fix: cap stdin read at 1 MiB to prevent DoS (#3857)
• fix(workflows): reject mismatched run state IDs (#3899)
• chore: release 0.15.2, begin 0.15.3.dev0 development (#3953)