feat: add experimental wealth-ledger-sdd-lab OpenSpec schema (#61)

openspec/schemas/wealth-ledger-sdd-lab/templates/tasks.md

@@ -0,0 +1,18 @@
+# Tasks
+
+<!-- guide: Task line format:
+- [ ] X.Y [main|frontend|backend|docs|specs] <Kind>: <action + outcome>
+  - **Covers:** `capability` — `Requirement heading` pairs, or `N/A` — <reason>
+  - **Source:** exact upstream artifact section / contract / docs-impact entry
+  - **Verification:** owner-controlled command, observable check or artifact
+  - **Depends on:** task ids or none
+Kinds: Implementation, Migration, Automated Testing, Contract Parity, Docs,
+Independent Review, QA Verification, Verification. Remove guides before G3. -->
+
+## 1. <!-- guide: delivery phase -->
+
+## Docs Impact
+
+<!-- guide: Only when docs-impact is not selected: list docs/ targets with
+     resulting AS-IS, or one concrete no-change reason. Delete when docs-impact.md
+     exists. -->