Advance deduplicated lighting capability coverage

docs/tasks/WBV2-P15-003.md

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+# WBV2-P15-003: close_lighting_capability_gate
+
+- task: WBV2-P15-003
+- parent: WBV2-P15-002
+- status: in_progress
+- gap: workflow:close_lighting_capability_gate
+- ownerFamily: RELEASE
+- targetImplementationClass: LOCAL_BOUNDED
+
+## 目标
+
+Close the Lighting capability gate while preserving partial-family and 6900-entry limitations.
+
+## 输入与范围
+
+- Focused receipt: `tests/golden/WBV2-P15-002/lighting-fields-receipt-report.json`
+- Coverage matrix: `tests/golden/WBV2-P14-002/capability-evidence-matrix.json`
+- Production entrypoint: `node tools/web/generate-wbv2-lighting-gate.mjs --write`
+
+## 验收
+
+- only the tested lighting slice is claimed
+- pending inventory remains 6618
+- duplicate validation remains zero
+- historical reproduction remains false
+- malformed, hash-drift, or unsupported evidence keeps the gate in_progress
+- `node tools/web/check-task-context.mjs --task WBV2-P15-003 --write`
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P15-003/`
+- Status: `docs/status/WBV2-P15-003.md`
+- Manifest: `tests/golden/WBV2-P15-003/manifest.json`
+- Rollback: restore P15-002 as queue parent.