* refactor(#1852): lazy-split plan-phase.md into steps/
Extract 3 self-contained, rarely-hit sections into gsd-core/workflows/plan-phase/steps/
via lazy 'Read and execute' pointers (mirrors execute-phase/steps/, ADR-1610 progressive
disclosure — no eager @-import): closed-phase-gate (1.5), prd-express-path (3.5),
windows-troubleshooting. Byte-invariant: plan-phase.md 94459 -> 89775 (-4684), each step
< 32 KiB anchor, resolved instructions unchanged.
Scope note: only 3 sections were extractable. plan-phase.md is guarded by a dense net of
content-presence tests (plan-bounce/enh-3209/phase6-planning-capabilities assert specific
sections/flags inline) that block extracting the larger blocks without also refactoring
those tests — durable low-80s headroom is deferred pending maintainer re-scope (issue #1852).
Cascade: size:baseline regen, 16 golden-install-parity fixtures regen, INVENTORY in sync.
Full plan-phase test surface green (4129/4130, 0 fail); lint:ci exit 0.
* docs(changeset): Changed fragment for #1934 (plan-phase lazy-split)
* docs(changeset): mark #1934 fragment docs-exempt (internal workflow refactor)
* fix(#1852): add gsd_run launcher preamble to prd-express-path step
The extracted prd-express-path.md calls gsd_run but the canonical launcher
preamble lived in the parent plan-phase.md — runtime-launcher-parity (#373)
walks workflows/ recursively and requires every .md using gsd_run to carry
exactly one preamble + the $HOME/.claude fallback arm (same as the existing
execute-phase/steps/ files). Injected via scripts/sync-runtime-launcher.cjs;
golden fixtures + size baseline regenerated. plan-phase.md unchanged (89775).
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Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
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