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NicholasFlemmerNicholasFlemmer/styx-app/.claude/skills/state-machine-change/SKILL.md

state-machine-change

Skill31 starsChanged 2 months agoApache-2.0View on GitHub

Modify the Session or Grant state machine in packages/core with exhaustive transition tables and tests. Use whenever a state, event, guard, or effect changes.

The file

We split this skill into the rules it gives an agent

3 rules. About 0 are common, 0 are distinctive, and 3 are very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈0

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 3

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Very specific:

    Update the State/Event unions and the transition table in packages/core/src/machines/<name>.ts (object-literal table, not if-chains) so …

    line 11
  2. Very specific:

    Update the Mermaid diagram in docs/state-machines.md.

    line 14
  3. Very specific:

    Run pnpm test -F @styx/core --coverage (100% on machines) and the state-machine-auditor subagent.

    line 15

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

State machine change: $ARGUMENTS

  1. Quote the spec §1 rule being implemented (/spec-lookup 1).
  2. Update the State/Event unions and the transition table in packages/core/src/machines/<name>.ts (object-literal table, not if-chains) so exhaustiveness errors surface missing cells. Invalid pairs return null.
  3. Effects are data ({ type: 'startExpiryTimer', grantId, at }), executed by main.
  4. Tests: table-driven over every (state, event) pair incl. invalid; invariants: needs-you never times out; always never expires; one open grant ask per session.
  5. Update the Mermaid diagram in docs/state-machines.md.
  6. Run pnpm test -F @styx/core --coverage (100% on machines) and the state-machine-auditor subagent.

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