Recover joint planning dependencies and preserve valid hypothesis siblings

docs/joint-case-planning-v2.md

@@ -97,3 +97,28 @@ Sperren erhaltener Vorschläge, falsch geformte Modellfelder, Abbruch/Wiederaufn
 Import in einen neuen Workspace ab. Ein Fall des unveränderten kuratierten Fehlerkorpus
 prüft die Lokalisierung der tatsächlich beobachteten Fehler. Kein bezahlter API-Test
 wurde ausgeführt; Kosten und semantische Qualität sind im nächsten Realtest zu messen.
+
+
+## Dependency recovery revision 1
+
+New joint contexts freeze `joint_generation.recovery_version = 1`. Contexts without
+this marker retain the earlier projection and request behavior for replay.
+Valid explicit premise references are unioned into their proposal dependency lists
+on a copied projection, never by editing the saved LLM answer. Only existing readable
+source IDs and exact existing interpretation statement pointers are eligible. Unknown
+references and grounded unread references still fail validation. No premise is promoted
+from unverified to grounded, and no claim is deleted or rewritten.
+
+Each candidate is checked independently before freezing `joint_retained` in the
+hypothesis context. Initial candidates based on an already accepted interpretation
+can be retained directly; after interpretation repair, explicit dependency review is
+still required. Invalid candidates remain unlocked. Duplicate candidates are not locked
+against a necessary diversity correction. A followup corrects only unlocked positions;
+locked proposals are enforced with schema constants and local equality checks. Final
+publication still validates the full set for count, grounding, primary focus and diversity.
+
+The joint prompt repeats the required `described_behavior.verification` value. Missing
+verification is not silently filled: the scoped statement correction must provide it.
+The original 2026-10-20 replies and a bounded validation context are preserved in the
+curated rejection corpus. Offline regression checks hashes, reference union, sibling
+preservation and rejection of invented references. No paid API request was needed.