#G.Core:1 - Problem frame

Preface node heading:g-core-1-problem-frame:78466

#What this page is

This is generated FPF reference text from the specification preface or supporting sections. It helps interpret FPF; it is not FPF Reference product documentation.

#Methodology

Use it to understand how the specification wants to be read, then return to a route, pattern, or work packet for active work. Cite generated IDs only when the wording changes the task decision.

#Content

Part G contains patterns for CG‑frame characterization and its downstream artefacts (cards, evidence graphs, bridge surfaces, refresh/shipping orchestration, parity harnesses, dashboards, interop surfaces). In the current spec, several invariants are already present as suite obligations/protocol norms and are reused across Part G.

Part‑G‑wide invariants are governed by G.Core so every G.x can:

• cite the core invariants rather than restating them, and
• isolate pattern-scoped specifics as Extensions without turning each G.x into a mixed bag of universal rules, kit surfaces, and method/generator descriptions.

This pattern (G.Core) therefore acts as the deduplication hub for FPF Part G.

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Last Updated: 2026-06-17 — upstream FPF commit 646b0b9b (github.com/ailev/FPF)