add gstack 2 parity and lifecycle gates

evals/parity/contracts/spec.json

@@ -0,0 +1,28 @@
+{
+  "source": "spec",
+  "tree": "plan",
+  "public_mode": "Specification",
+  "mode": "spec",
+  "mandatory": true,
+  "visibility": "primary",
+  "replacement": "$plan --mode Specification --module spec",
+  "source_path": "spec/SKILL.md.tmpl",
+  "base_sha": "bb57306d98c97011b0919c6132705a15b1579781",
+  "blob_sha": "6c0c14e1b37e1e56d85427e9c8d080a6df908992",
+  "normalized_render_sha256": "1693c430139d43e80d2981d95a61dc9d3674435690d5d838f4ca92f4d592694a",
+  "target": "skills/plan/references/legacy/spec.md",
+  "overlays": [
+    679
+  ],
+  "contract": {
+    "question_order": "Preserve the source workflow order; gather prerequisites before consequential questions.",
+    "pressure": "Preserve the source forcing questions, recommendation pressure, and one-question-at-a-time cadence.",
+    "smart_skips": "Skip only when the source condition is false, and name every skipped module with evidence.",
+    "stop_approval_gates": "Preserve every STOP, hard gate, approval boundary, and no-mutation-before-approval rule.",
+    "evidence": "Ground conclusions in inspected code, commands, browser/device observations, or source artifacts.",
+    "artifacts": "Produce every report, plan, log, screenshot, manifest, or handoff required by the source.",
+    "mutation": "Use the source mutation boundary; never broaden writes, commits, pushes, merges, or deploys.",
+    "exit": "Preserve source completion checks, unresolved-decision reporting, and explicit blocked exits.",
+    "voice": "Direct builder voice; match the user language and retain source-specific tone constraints."
+  }
+}