diff --git a/docs/arch/HYPERTWIST_PHASE3_END_STATE_FREEZE_PACKET_2026-05-06.md b/docs/arch/HYPERTWIST_PHASE3_END_STATE_FREEZE_PACKET_2026-05-06.md
new file mode 100644
index 0000000..3b75500
--- /dev/null
+++ b/docs/arch/HYPERTWIST_PHASE3_END_STATE_FREEZE_PACKET_2026-05-06.md
@@ -0,0 +1,130 @@
+# HyperTwist Phase 3 end-state freeze packet
+
+Created on `2026-05-06`
+
+Status:
+
+- first-party HyperTwist packet
+- bounded closure / execution-discipline slice
+
+## Purpose
+
+This packet defines the explicit late-Phase-3 closure framing after the generated-mode executor, linked-state rebuild closure, live schedule-policy feedback loop, same-pass coach derived-state resync, and thin generated-mode runtime consumer packet all landed.
+
+The open task is:
+
+- freeze the concrete Phase `3` end-state so future continuation does not reopen already-closed backend work by mistake
+
+It is not:
+
+- another generated-mode backend packet
+- a broad orchestration expansion
+- a recognition productionization packet
+- a cleanup-only refactor
+
+## Scope
+
+Bounded lane:
+
+- record the concrete owned Phase `3` end-state and its exit gate
+
+Required result:
+
+- one product-side packet document states which late-Phase-`3` slices are now closure-complete
+- the packet states which thin runtime consumers already landed above the stabilized backend
+- the packet states what is intentionally deferred so later sessions stop treating deferred work as missing closure work
+
+Out of scope:
+
+- new generated-mode materialization work
+- new dashboard UX work
+- additional runtime consumers beyond the already-landed thin packet
+- changes to external plugin copies
+
+## Current owned product truth
+
+These pieces are now live in first-party code:
+
+- owned training/coaching repository state with save/load/repair/integrity verification
+- imported catalog overlay and bounded finite/non-finite imported runtime materialization
+- active imported runtime selector state and generated-mode selector-choice persistence
+- owned generated-mode launch-request creation, persistence, latest-request query, and bounded clean-room execution
+- real dashboard routing through the generated-mode executor
+- linked-state integrity and rebuild verification across learner, review, coach, queue, and queue-history surfaces
+- live schedule-friction feedback folded back into coach brief shaping
+- same-pass resynchronization of coach brief, follow-up brief, queue summary, queue state, and schedule-policy / queue-execution summaries
+- thin runtime-consumer parity for the bounded generated-mode lane through:
+  - `UHyperTwistTrainingPanelWidget`
+  - `AHyperTwistTrainingSessionActor`
+
+What this means in practical terms:
+
+- HyperTwist can run owned practice, recommendation, follow-up, scheduling, and bounded imported generated-mode execution flows with durable repository state and coherent rebuild integrity
+- the current open work is no longer a missing Phase `3` backend capability
+
+## Phase 3 exit gate
+
+For current roadmap discipline, Phase `3` should now be treated as closure-complete when judged against these criteria:
+
+1. owned practice sessions run end-to-end inside first-party training/coaching code
+2. repository state persists, reloads, repairs, and re-derives coach-linked state coherently
+3. bounded imported generated-mode selection, request creation, persistence, latest-request inspection, and owned execution all work through first-party surfaces
+4. at least the currently chosen thin runtime consumers above that backend exist and compile cleanly
+5. no still-open task in this lane is secretly a missing backend dependency for ordinary Phase `3` continuation
+
+Current read:
+
+- those criteria are satisfied in live product code
+
+## Do not reopen
+
+Future continuation should not reopen these areas as if they were still the primary missing gap:
+
+- generated-mode executor existence
+- latest generated launch-request persistence or query support
+- schedule-friction fold-back into coach shaping
+- linked-state rebuild integrity across queue / queue-history surfaces
+- same-pass coach derived-state resynchronization after late brief refinements
+- thin generated-mode runtime-consumer parity in panel widget and session actor
+
+## Intentionally deferred
+
+These remain valid future work, but they are not required to keep claiming clean Phase `3` closure:
+
+- broader generated-mode widening outside the bounded imported lane
+- additional runtime consumers unless explicitly chosen as a new bounded packet
+- recognition productionization
+- exact classic-cubing state / transform engine completion
+- deeper simulation / hyper runtime work
+- broad file decomposition or cleanup-only refactor
+
+## Next logical lanes after this freeze
+
+After this packet, continuation should treat the next work as a deliberate new lane rather than unfinished hidden Phase `3` backend work.
+
+Strongest next choices are:
+
+1. a deliberately chosen additional thin orchestration / runtime consumer packet if product flow still needs it
+2. the first real Phase `4` orchestration and recognition-productionization packet
+3. later platform-deepening work only when explicitly chosen
+
+## Suggested file ownership
+
+Primary edit surface:
+
+- `docs/arch/HYPERTWIST_PHASE3_END_STATE_FREEZE_PACKET_2026-05-06.md`
+
+## Acceptance criteria
+
+- the packet states the concrete current Phase `3` exit gate
+- the packet records the landed late-Phase-`3` closure slices
+- the packet distinguishes closed backend work from intentionally deferred future work
+- the packet gives future sessions a clear do-not-reopen boundary
+
+## Validation checklist
+
+1. read the packet against the current product reality
+2. confirm it matches the current restart/roadmap docs rather than the older executor-gap framing
+3. confirm it does not claim later-phase work as already done
+
+That is the packet.