Shared FSL language and verifier reference for writing, checking, verifying, repairing, explaining, mutating, refining, replaying, generating scenarios/test scaffolds, and interpreting fslc JSON results. Use directly for FSL syntax, kernel specs, verifier errors, repair loops, and command usage. For role-specific authoring, prefer fsl-business for business flows, fsl-requirements for PM requirements/acceptance/NFR specs, and fsl-design for engineering design/refinement work.

2026-07-2513

fsl-requirements-document

ymm-oss/fsl

Generate, edit, and re-verify a human-readable requirements document (Markdown) from a checked FSL requirements/spec dialect file, using fslc document generate/claims/check. The agent is a non-normative editor and review-support assistant, never a compiler — it may only fill in the document's editable slot (background, summary, review notes) and propose advisory findings; it must never rewrite a generated claim block or invent normative language FSL does not state. Use when the deliverable is a requirements document artifact for stakeholders, not FSL authoring (use fsl-requirements for that) or a verification audit ledger (use fsl for fslc ledger).

2026-07-1813

release

ymm-oss/fsl

Operate FSL's GitLab Flow-inspired lifecycle from short-lived branches through main and production to an exact vX.Y.Z release tag. Use when adopting the branch flow, integrating post-merge quality improvements, promoting a release, cutting a release, or handling a production hotfix.

2026-07-1713

fsl-requirements

ymm-oss/fsl

Write and verify FSL requirements-layer specs for PMs/PdMs from natural-language product requirements, acceptance criteria, forbidden flows, requirement IDs, traceability, and NFRs such as permissions, audit, capacity, reliability, and SLA/deadline behavior. Use when the deliverable is a requirements specification, not business process discovery, software architecture, internal design, or implementation conformance.

2026-07-1713

checkpoint

ymm-oss/fsl

Reconcile tasks/active.md with Git, changed files, and observed verification before compaction, clearing, or handoff.

2026-07-1313

add-language-feature

ymm-oss/fsl

Scaffold and verify a new native Rust FSL language feature while keeping syntax, lowering, symbolic/concrete semantics, docs, skill reference, tests, and changelog coupled.

2026-07-1313

name	task-start
description	Create or refresh the verified, resumable task packet in tasks/active.md before substantial FSL repository work.

Start an FSL task

Use this skill before substantial implementation, debugging, review, or design work.

Inspect the current branch and git status --short.
Restate the requested outcome as an observable goal and list explicit non-goals.
Identify the authority surface: relevant contracts, design documents, tests, native Rust paths, and user constraints.
Inspect only the narrow evidence needed to establish the current state. Delegate broad, read-heavy exploration to evidence_explorer when it reduces the main context.
Create or replace tasks/active.md from tasks/active.template.md.
Record invariants, evidence, scope, sibling paths, verification commands, remaining uncertainty, and one concrete next action.
Remove stale or speculative content from a previous task.
Stop before implementation so the task packet can be checked independently.

Keep the packet concise. Do not paste raw logs, full search results, secrets, or machine-specific absolute paths.