DL-203

The Linear provider (go/internal/forge/linear.go, stdlib GraphQL, team key as repo) serves the issues half read+write — the read half served live via the OQ-A untracked-artifact fallback (no Linear ingestion exists) — and returns ErrUnsupported for the whole PR/review family — the canonical PullRequest surface is never fabricated on a Linear coordinate; its write credential is its own server_only declared secret (DL-052). Amends DL-051 (Linear moves from a deferred issues-only follow-on to in-scope issues read+write; the swappable-Provider framing and the PR/review-family-unsupported core stand)

Status: Active (Matt, 2026-08-17)

Record: ../../server/compass-forge-write-path/design.md#5-linear-provider-read–write-issues-half