Move the AI skills to Fallout.Workbench and slim AGENTS.md

[ChrisonSimtian]

Move this repo's AI skills to Fallout.Workbench, so the core repo holds less AI material.

What changed

• Remove .agents/ and the skills, agent and command under .claude/. The four generic items already exist in Workbench. The six core-specific skills now live in its fallout-core plugin (Workbench feat(ci): trunk-based migration — main as the only long-lived branch #10, merged).
• Keep .claude/settings.json.
• Shrink AGENTS.md from 12 KB to 2 KB. It now says where the rules and skills are, what the project is, and the build commands. CLAUDE.md still imports it.
• Move the rules that people need too into CONTRIBUTING.md: backwards compatibility, no per-file license headers, plain English, and the former-maintainer rule. The other rules were already there.
• Point the PR template, release.yml, docs/ and the .gitignore comment at Workbench.
• Leave the ADRs alone. Two still mention .agents/. They are history.

Notes

• AI tools need two plugins now. AGENTS.md has the install commands:

  /plugin marketplace add Fallout-build/Fallout.Workbench
  /plugin install fallout-workbench@fallout-workbench
  /plugin install fallout-core@fallout-workbench
  

• PR Rewrite central package versions and version properties in .props files in fallout-migrate #694 edits adding-a-migration-step, which this PR removes. After Rewrite central package versions and version properties in .props files in fallout-migrate #694 merges, its two-line change gets ported to Workbench.
• No code changed, so I did not run the build or tests.

Verification

• git grep finds no .agents/ references outside the ADRs.
• The six skill URLs resolve on Workbench main.

https://claude.ai/code/session_01E3qCCdUU8nWPydrxPVCLWW

[ITaluone]

Hmm.. if this merges, everyone with non-claude is "locked out" of these rules.

E.g. we use cursor.. cursor won't install claude plugins

[ChrisonSimtian]

Hmm.. if this merges, everyone with non-claude is "locked out" of these rules.

yep, I realised that after I raised the PR yesterday. Hence the draft status. This still needs a lot more work and claude plugins might not the best approach.

How does that work with cursor? Do they have a plugin system? How do you load external skills and agents?

[ITaluone]

How does that work with cursor? Do they have a plugin system? How do you load external skills and agents?

I asked cursor: it got me (almost identical vs claude) plugin definitions (Fallout-build/Fallout.Workbench#11)