v1.91.79.0 feat(eval-plan): /eval-plan tier 1, lane-check, evidence verify, coordinator contract, owner brief, contributor-PR mode, banned terms (multi-agent wave PR E) (#3123)

* v1.91.79.0 feat(eval-plan): /eval-plan tier 1, lane-check, evidence verify, coordinator contract, owner brief, contributor-PR mode, banned terms (multi-agent wave PR E)

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* fix(spec,review): fail closed when the coordinator contract cannot be read; restore the omitted-Army sentence

The spec --execute spawn captures `gstack-autoplan contract` before piping
the archive, so a lane never starts without the contract; the C9 fixture
installs its gstack-like checkout (bin, lib, a contract stub) at every
host's global root. Review Step 5.8 keeps the pinned
'without claiming specialist coverage' wording.

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

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Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

gstack/llms.txt

@@ -29,6 +29,7 @@ Conventions:
 - [/diagram](diagram/SKILL.md): Turn an English description (or mermaid source) into a diagram triplet: the source, an editable .excalidraw file you can open on excalidraw.com, and rendered SVG + PNG.
 - [/document-generate](document-generate/SKILL.md): Generate missing documentation from scratch for a feature, module, or entire project.
 - [/document-release](document-release/SKILL.md): Release documentation audit.
+- [/eval-plan](eval-plan/SKILL.md): Preregister a paid eval (bars, arms, decoys, stop rules), dry-run it at zero cost, then run a three-item priced pilot whose spend table gates approval.
 - [/freeze](freeze/SKILL.md): Restrict file edits to a specific directory for the session.
 - [/gstack](SKILL.md): Router for the gstack skill suite.
 - [/gstack-upgrade](gstack-upgrade/SKILL.md): Upgrade gstack to the latest version.