docs(p15): add G9G close snapshot and QA instruction

sw-block/design/v3-phase-15-g9g-blockmaster-product-loop-mini-plan.md

@@ -1,7 +1,7 @@
 # V3 Phase 15 G9G - Blockmaster Product Loop To Publisher Mini-Plan
 
 Date: 2026-05-03
-Status: component slice implemented at `seaweed_block@afac861`; subprocess L2 implemented at `seaweed_block@bdd56c7`; seed-file entry implemented at `seaweed_block@7ed9ab2`; QA verification pending
+Status: close-ready on `p15-g9g/blockmaster-product-loop@7ed9ab2`; QA verification pending
 Branch target: `p15-g9g/blockmaster-product-loop`
 Scope: first live blockmaster loop that turns verified placement into publisher input
 
@@ -119,3 +119,41 @@ pre-writing lifecycle store internals:
 - r2 reaches assignment-backed `Healthy=true`.
 
 Only after that should we wire external API/CLI verbs or CSI create/publish.
+
+## 7. Close Snapshot
+
+Close target: `seaweed_block@7ed9ab2`.
+
+G9G closes the first product-loop assignment path:
+
+```text
+seeded placement intent
+  -> blockmaster lifecycle store
+  -> product-loop tick
+  -> VerifiedPlacement
+  -> G9F-2 AssignmentAsk bridge
+  -> authority.Publisher
+  -> blockvolume assignment stream
+```
+
+Evidence expected from QA:
+
+```powershell
+go test ./core/lifecycle ./core/host/master ./core/authority ./cmd/blockmaster ./cmd/blockvolume -count=1
+```
+
+Key L2 evidence:
+
+- `cmd/blockvolume::TestG9G_L2ProductLoopPublishesAssignmentToBlockvolume`
+- real `cmd/blockmaster`;
+- real `cmd/blockvolume`;
+- `--lifecycle-placement-seed` entry instead of pre-written internal lifecycle store;
+- product-loop assignment reaches blockvolume and makes r2 `Healthy=true`.
+
+Close non-claims:
+
+- `--lifecycle-placement-seed` is a temporary QA/M01 bridge, not the final product API.
+- YAML cluster spec is follow-up, not blocking G9G.
+- Create/delete/attach/detach user verbs are follow-up.
+- Blank-pool replica-id allocation is follow-up.
+- CSI and M01 hardware smoke are follow-up.

sw-block/design/v3-phase-15-g9g-qa-test-instruction.md

@@ -0,0 +1,72 @@
+# V3 Phase 15 G9G QA Test Instruction
+
+Date: 2026-05-03
+Status: close-candidate on `p15-g9g/blockmaster-product-loop@7ed9ab2`
+Scope: blockmaster product loop publishes verified placement into the authority publisher path
+
+## Headline
+
+At `p15-g9g/blockmaster-product-loop@7ed9ab2`, G9G proves a real blockmaster
+can import placement intent through a daemon entry point, run the lifecycle
+product loop, publish through `authority.Publisher`, and deliver assignment to
+a real blockvolume subscriber.
+
+## Environment
+
+- Repo: `seaweed_block`
+- Branch: `p15-g9g/blockmaster-product-loop`
+- Minimum commit: `7ed9ab2`
+- Fidelity: subprocess L2 with real `cmd/blockmaster` and real `cmd/blockvolume`
+- Non-claim: not m01/M02 hardware and not final product API
+
+## Full Regression Command
+
+```powershell
+go test ./core/lifecycle ./core/host/master ./core/authority ./cmd/blockmaster ./cmd/blockvolume -count=1
+```
+
+Expected result: all five packages pass. `cmd/blockvolume` is expected to take
+about two minutes because it includes G8 and G9 subprocess tests.
+
+## Focused G9G Command
+
+```powershell
+go test ./cmd/blockvolume -run TestG9G_L2ProductLoopPublishesAssignmentToBlockvolume -count=1
+```
+
+Expected result: pass in roughly 10-15 seconds on the local Windows harness.
+
+## Scenario Checklist
+
+1. Blockmaster accepts a product-loop seed entry.
+   Backing test: `cmd/blockmaster/main_test.go::TestParseFlags_LifecyclePlacementSeedOptional`
+
+2. Product-loop component tick publishes verified existing replica placement.
+   Backing test: `core/host/master/product_loop_test.go::TestG9G_ProductLoopPublishesVerifiedExistingReplica`
+
+3. Unverified placement does not publish authority.
+   Backing test: `core/host/master/product_loop_test.go::TestG9G_ProductLoopDoesNotPublishUnverifiedPlacement`
+
+4. Repeated product-loop tick does not churn authority.
+   Backing test: `core/host/master/product_loop_test.go::TestG9G_ProductLoopIsIdempotentForSameAuthorityLine`
+
+5. Publisher subscription receives product-loop assignment.
+   Backing test: `core/host/master/product_loop_test.go::TestG9G_BlockvolumeSubscriptionReceivesProductLoopAssignment`
+
+6. Real subprocess path delivers assignment to blockvolume.
+   Backing test: `cmd/blockvolume/g9g_l2_product_loop_test.go::TestG9G_L2ProductLoopPublishesAssignmentToBlockvolume`
+
+## Non-Claims
+
+- `--lifecycle-placement-seed` is a temporary QA/M01 bridge, not the final product API.
+- No YAML cluster spec yet.
+- No external create/delete/attach/detach API yet.
+- No blank-pool replica-id allocator.
+- No CSI integration.
+- No m01/M02 hardware evidence.
+- Assignment publication still does not imply frontend readiness in the abstract; this L2 checks the existing blockvolume status projection after assignment delivery.
+
+## Closure Sentence
+
+G9G closes the first live product-loop assignment path:
+`seeded placement intent -> blockmaster product loop -> publisher -> blockvolume assignment stream`.