Skip to main content

PowerFill Phase 6d — Completion Report

Author: PSSaaS Systems Architect Date: 2026-04-19 Status: Code complete; deployed to local pssaas-db (010 clean; 011 A49-family on local — documented expected per 6b precedent) AND PS_DemoData (010 + 011 both clean); A28/A37 RESOLVED; sentinel phase-6d-ue-syn-trades-ready ✓; 158/6/0 tests; Step 6 (ue) NOT exercised end-to-end on PS_DemoData because the 6c A54 PK violation in Step 5 (pool_guide) short-circuits the run via the fail-fast contract before Step 6 reaches UE — documented Option C disposition (PO-confirmed at planning checkpoint); pending Collaborator review and PO push. Sentinel: phase-6d-ue-syn-trades-ready ✓ Companion docs:

TL;DR​

Sub-phase 6d (UE pass + synthetic trades subsystem) ships:

  • 010_CreatePowerFillSynTradesSchema.sql — 4 new tables (3 pfill_syn_* + pfill_powerfill_log) with idempotent guards, A50 SET preamble, A32 PRINT-in-guards. DDL recovered from PS_DemoData empirical info_schema + sys.indexes PK probe (per A28 + F-6d-8). Closes A28 + A37.
  • 011_CreatePowerFillUeProcedure.sql — verbatim port of psp_powerfillUE (NVO 13246-19801; ~6,556 SQL data lines = of_get_psp_powerfillue_syntax_a + of_get_psp_powerfillue_syntax_b). Single CREATE PROCEDURE (split impossible per F-6d-6: _a/_b join is mid-statement-block byte-level concat). 6,613 total file lines (78 boilerplate + 6,535 SQL data lines). 4th iteration of clean first-attempt subagent SQL transcription (after 6a 670 / 6b 5,837 / 6c 3,274).
  • 4 EF Core entities (PowerFillSynTradeBase / PowerFillSynPowerFillGuideAllRank / PowerFillSynPowerFillGuide / PowerFillPowerFillLog) registered in PowerFillModule.cs. PK shapes per F-6d-8 empirical PS_DemoData PK probe; _all_rank registered as keyless (HasNoKey).
  • PowerFillRunService Step 6 (ue) — added after Step 5 (pool_guide); same 6 parameters as conset (per A40 / F-6d-5); 10-min command timeout; post-UE counter query for 6 new RunSummary fields.
  • RunSummary extended with 6 new fields: syn_trade_base_count, syn_powerfill_guide_all_rank_count, syn_powerfill_guide_count, pfill_powerfill_log_count, post_ue_allocated_count, post_ue_pool_guide_count (all snake_case [JsonPropertyName] per Phase 5 retro lesson).
  • Sentinel bumped to phase-6d-ue-syn-trades-ready.
  • 8 net-new unit tests + 1 extended (StepNames lock now 6-step; Step 6 fail-fast contract; 6 per-new-field default + 1 consolidated snake_case JSON contract). Plus 2 entity-config test extensions (CompositeKeys + SingleColumnKeys for the 4 new entities; IntentionallyKeylessEntities registry for _all_rank). 150 → 158 tests passing (+8 net-new). 0 failed.
  • Spec amendment to powerfill-engine.md: Run APIs /run row mentions Step 6 + 6 new RunSummary fields + A56 caveat; Post-Allocation requirements section marks UE pass as Phase 6d shipped with explicit "6d structurally complete; not exercised end-to-end on PS_DemoData per A54+A56" callout; new "Phase 6d PSSaaS-explicit tables" section documents the 4 new tables.
  • 3 new assumptions (A55, A56, A57) + 2 RESOLVED (A28, A37) + 2 UPDATED (A52, A54).

A56 is the headline observation of the PoC: Step 5 (pool_guide) hits A54 at the IDENTICAL line/loan/trade as 6c (SqlException 2627, (36177868, 3385000026)); per the orchestration's fail-fast contract, Step 6 (ue) is NOT recorded in response.Steps and the 4 new tables remain empty. The 6d port is structurally correct (deploys clean, OBJECT_IDs verifiable, build/test green) but the proc body is NOT exercised end-to-end on PS_DemoData. Doubly Phase-9-blocked: even if Step 5 fail-fast were bypassed, UE itself re-invokes pool_guide internally at NVO 19795 and would hit the same PK violation. Per Option C disposition (PO-confirmed at planning checkpoint), Phase 9 parallel-validation against a clean Desktop App customer DB is the canonical gate.

Sub-phase calendar time: ~1 Architect-session (consistent with 6a, 6b, pre-6b sweep, 6c; well under the breakdown's 7-10 day estimate). The aggressive subagent delegation pattern + reusable 6c infrastructure compresses velocity.

What was produced​

New SQL artifacts​

  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Sql/010_CreatePowerFillSynTradesSchema.sql (235 lines) — 4 CREATE TABLE blocks with IF OBJECT_ID(...) IS NULL idempotent guards + PRINT-in-guards (A32) + A50 SET preamble (defensive consistency with 008/009). DDL types from empirical PS_DemoData info_schema (per A28); PK shapes from empirical sys.indexes PK probe (per F-6d-8).
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Sql/011_CreatePowerFillUeProcedure.sql (6,613 lines) — verbatim port of psp_powerfillUE; subagent-transcribed via Template 2 protocol (4th clean first-attempt after 670/5,837/3,274). Sanity anchors verified: 1× CREATE PROCEDURE; 17× pfill_powerfill_log; 14× pfill_syn_powerfill_guide_all_rank; 10× pfill_syn_trade_base; 1× EXEC Psp_powerfill_pool_guide (NVO 19795); 1× TRUNCATE pfill_powerfill_log; 1× TRUNCATE pfill_syn_trade_base. Forbidden content all 0: ~", //", + &, ls_syntax, end function. Block boundary join (output line 3283 → 3284) confirmed: _a last fragment END (NVO 16460) immediately followed by _b first fragment /* Reload Ranking Tables */ (NVO 16471) — exact byte-level join.

New EF Core entities​

  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Domain/PowerFillSynTradeBase.cs — 11 cols, composite PK (SynTradeId, Rate) via IEntityTypeConfiguration<T>; SynTradeId is int IDENTITY(1,1) (per F-6d-3 empirical correction).
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Domain/PowerFillSynPowerFillGuideAllRank.cs — 40 cols, keyless (HasNoKey()) per F-6d-8 (PS_DemoData empirical PK probe shows no PK on this heap table).
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Domain/PowerFillSynPowerFillGuide.cs — 40 cols, single-col PK on LoanId via [Key] attribute per F-6d-8.
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Domain/PowerFillPowerFillLog.cs — 5 cols, single-col PK on LogId IDENTITY(1,1) per NVO 13267-13274 auto-create block.

Modified​

  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Domain/PowerFillEntityConfiguration.cs — added 2 new IEntityTypeConfiguration<T> classes (PowerFillSynTradeBaseConfiguration, PowerFillSynPowerFillGuideAllRankConfiguration — the latter calls b.HasNoKey() + explicit b.ToTable("pfill_syn_powerfill_guide_all_rank") since keyless entities don't pick up [Table] attribute by default).
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/PowerFillModule.cs — registered 4 new entities in RegisterEntities; bumped sentinel from phase-6c-pool-actions-ready to phase-6d-ue-syn-trades-ready in the MapEndpoints /status route.
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Services/PowerFillRunService.cs — added StepUe = "ue" constant; added Step 6 invocation after Step 5; added RunUeStepAsync method (~80 LOC) — 6-parameter EXEC mirroring Step 4 conset shape; 10-min command timeout (mirrors 6b/6c D8); PopulatePostUeCountersAsync helper that hoists 4 syn-table + log + 2 post-UE rebuild counters into RunSummary (best-effort even on Step 6 failure so PoC observers see what UE managed to write before failing). Class XML doc updated to enumerate all 6 steps + cite NVO 19795 (UE re-invokes pool_guide internally).
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Contracts/RunContracts.cs — RunSummary gains 6 new fields with explicit [JsonPropertyName(...)] snake_case attributes per the Phase 5 retro lesson. XML docs cite the UE step where each counter is written.
  • src/backend/tests/PowerSeller.SaaS.Modules.PowerFill.Tests/Services/PowerFillRunServiceTests.cs — extended StepNames_AreFiveInExpectedOrder → _AreSixInExpectedOrder (now asserts StepUe); added Run_UeStepNotReached_WhenPriorStepFails (fail-fast contract); added 6 RunSummary_*Field_DefaultsToZero tests (one per new field); added 1 consolidated RunSummary_All6dFields_SerializeAsSnakeCase JSON contract lock test. Total: 1 modified + 8 net-new = 9 new test changes. Subagent delivered first-attempt clean per Template 2.
  • src/backend/tests/PowerSeller.SaaS.Modules.PowerFill.Tests/EntityConfigurationTests.cs — added 4 new tables to ExpectedTableNames set (pfill_syn_trade_base, pfill_syn_powerfill_guide_all_rank, pfill_syn_powerfill_guide, pfill_powerfill_log); added IntentionallyKeylessEntities registry containing PowerFillSynPowerFillGuideAllRank; updated AllEntitiesHaveAPrimaryKeyConfigured to handle keyless entities (assert FindPrimaryKey() returns null for entities in the registry, non-null for everything else); extended CompositeKeys_MatchLegacyDdl with PowerFillSynTradeBase (SynTradeId, Rate); extended SingleColumnKeys_MatchLegacyDdl with PowerFillSynPowerFillGuide (LoanId) + PowerFillPowerFillLog (LogId). Self-implemented as a follow-up after the build surfaced the entity-count + PK-required test failures (see "Process notes" §"Build feedback loop" below).
  • docs-site/docs/specs/powerfill-engine.md — three amendments:
    • §Post-Allocation (UE Pass): marked items 1-3 as [x] Phase 6d with verbatim NVO line citations + A37 + A52 + A56 cross-refs; added explicit [ ] DEFERRED to Phase 9 (per A54 + A56) callout for end-to-end UE PoC against PS_DemoData; remaining items deferred to Phase 7+
    • §Run APIs row for /run: extended to mention 6d Step 6 (ue) + the 6 new RunSummary fields + A56 caveat ("structurally deployed but not yet exercised end-to-end on PS_DemoData")
    • §Tenant Isolation > new sub-section "Phase 6d PSSaaS-explicit tables" (mirroring Phase 4's analog): documents the 4 new tables with col counts, PK shapes per F-6d-8, NVO line citations for population paths, and A56 deferral
  • docs-site/docs/specs/powerfill-assumptions-log.md — A28 + A37 marked RESOLVED with full disposition arcs (A28 includes F-6d-3 column-type correction explanation; A37 includes the explicit-deploy-vs-auto-create coexistence note); A52 + A54 updated with 6d-specific dispositions; A55 (PS_DemoData empirical PK probe + F-6d-3 column-type correction) added; A56 (Step 5 fail-fast cascade prevents Step 6 on PS_DemoData) added; A57 (kickoff specificity at NVO-line level reduces Truth Rot) banked observation added; A52-A54 disposition section updated with 6d footnotes; new A55-A57 disposition section added.
  • docs-site/docs/handoffs/powerfill-phase-6d-completion.md — this completion report.
  • docs-site/docs/devlog/2026-04-19-powerfill-phase-6d.md — devlog entry.

Out of scope (deliberately not produced)​

  • No A54 fix (per Option C; PO-confirmed at planning checkpoint).
  • No new HTTP endpoints (Step 6 folds into existing POST /run).
  • No async orchestration / pfill_run_history / single-active-run guard / failure-state cleanup (6e).
  • No output query APIs (Phase 7).
  • No fixture authoring (Option B was rejected at planning checkpoint).
  • No ADR-021 amendment for "narrow legacy bug fixes" (Option A was rejected at planning checkpoint).
  • No new ADRs.

Decisions made​

#DecisionRationaleWhere
D1Two-file deploy: 010 (4 schema CREATEs) + 011 (UE proc CREATE)Reviewability + failure isolation; schema and proc are conceptually distinct; F-6d-6 makes a 3-file split impossible (_a/_b join is mid-statement byte-level concat — must be ONE proc). Phase 1's 001+003 precedent.010 + 011 file structure
D2A54 Option C — accept partial PoC; verbatim port preserves bug; Phase 9 is the gatePO-confirmed at planning checkpoint. Consistent with 6c. ADR-021 verbatim discipline preserved.011 SQL header docs A54 deferral; Step 6 docstring; PoC expectations
D3A50 SET preamble defensively applied to BOTH 010 and 011UE has WITH ENCRYPTION (NVO 13258) → REQUIRED for 011. 010 doesn't NEED it but consistency with 008/009.010 + 011 SET preamble
D4Step 6 is its own step (not folded into Step 5 pool_guide)Mirrors Step 1-5 architecture; per-step Skip/Failed/Succeeded contract; cleaner timing attribution; Step 5 (pre-UE) and Step 6 (UE rebuild) measure DIFFERENT things and the step boundary makes that explicit.RunService.ExecuteAsync; new RunUeStepAsync
D5C# Step 6 + RunSummary additions self-implemented (~80 LOC + 6 fields) with Deliberate Non-DelegationEncodes A54 Option C disposition; the 6-parameter EXEC pattern (mirrors Step 4 conset; different from Step 5's 0-param); the post-UE counter queries (post_ue_allocated_count differs from pre-UE allocated_count because UE rebuilds pfill_powerfill_guide); the best-effort post-failure counter hoist (so PoC observers see what UE managed to write before A54 fires). SQL transcription DELEGATED. Tests subagent-DELEGATED.Plan §7
D6pfill_syn_powerfill_guide_all_rank registered as keyless (HasNoKey())F-6d-8 PS_DemoData empirical PK probe shows no PK on this heap table (it's the ranked candidate set with multiple rows per loan). Forcing a synthetic PK would deviate from PS_DemoData reality. The IntentionallyKeylessEntities registry in EntityConfigurationTests.cs makes this design intentional and asserted.4 EF entities
D7pfill_powerfill_log LogId is int IDENTITY(1,1) (PSSaaS-side; matches NVO 13267-13274 auto-create)Matches the legacy auto-create block byte-for-byte so the verbatim-port UE proc's IF-NOT-EXISTS guard remains a no-op when 010 has already deployed (legacy + PSSaaS coexistence per ADR-006).010 schema + PowerFillPowerFillLog entity
D810-min command timeout for Step 6 EXECMirrors 6b/6c D8 rationale. UE has more SQL (~6,556 lines vs conset's 5,837); production-scale runs may take minutes. Captured + restored to avoid leaking to other DbContext queries.RunUeStepAsync
D9Best-effort PopulatePostUeCountersAsync even on Step 6 failureIf Step 6 fails partway through (e.g. A54 fires inside UE at NVO 19795 after the syn tables ARE populated at NVO 19019-19790), the PoC observer should still see what UE managed to write before the failure point. Swallow secondary exception (original failure is what matters).RunUeStepAsync catch block

Migrations enumerated​

This sub-phase ships 1 new schema migration via 010_CreatePowerFillSynTradesSchema.sql:

  • 3 new pfill_syn_* tables (per A28 RESOLVED; F-6d-3 column-type correction; F-6d-8 PK probe)
  • 1 new pfill_powerfill_log table (per A37 RESOLVED)

PowerFill-owned table count: was 17 (Phase 1 001) + 1 PSSaaS-only (pfill_preflight_settings from 004) = 18; now 17 + 1 + 4 = 22 PowerFill-owned tables.

The 011 SQL artifact is a procedure-only deploy. No table changes from 011.

Gate findings​

Primary-Source Verification Gate (3-layer — exercised at planning AND deploy time)​

IDLayerFindingDisposition
F-6d-1NVO-vs-docKickoff cites NVO 13246-16463 (syntax_a) + 16465-19801 (syntax_b). Both verified exact via `Grep ^public function^end function. Wrapper at NVO 5888-5896 calls _a()then_b(_a_output); _bPREPENDS_a(NVO 19798ls_syntax = as_syntax + ls_syntax) → final string is verbatim syntax_a◦syntax_b`.
F-6d-2NVO-vs-docKickoff cites pfill_powerfill_log auto-create at NVO 13265-13275; verified exact. UE re-invokes psp_powerfill_pool_guide at NVO 19795 (EXEC Psp_powerfill_pool_guide); verified exact. UE teardown DELETEs at NVO 13441-13451 hit exactly the 4 tables documented (pfill_powerfill_guide, pfill_syn_powerfill_guide_all_rank, pfill_cash_market_map, pfill_syn_powerfill_guide); verified.(a) Re-verified. Kickoff and breakdown are correct on these anchors.
F-6d-3NVO-vs-tenant-DBSyn-trades deep dive said pfill_syn_powerfill_guide.syn_trade_id was the only int column ("likely IDENTITY"). Empirical PS_DemoData reality: ONLY pfill_syn_trade_base.syn_trade_id is int(10,0) IDENTITY. Both pfill_syn_powerfill_guide.syn_trade_id AND pfill_syn_powerfill_guide_all_rank.syn_trade_id are varchar(30) NOT NULL. Full DDL recovered for all 3 syn tables (40+40+11 cols, all nullability + precision verified).(a) Corrected in place via A55. 010 schema uses empirical PS_DemoData types as DDL source. Deep dive doc gets a footnote update via A28 disposition arc.
F-6d-4NVO-vs-tenant-DBpfill_powerfill_log does NOT exist in PS_DemoData (info_schema returns 0 rows for that name). Confirms the deep dive's Open Question 1 hypothesis: nobody created it via deploy; UE auto-creates at first run via NVO 13265-13275 IF-NOT-EXISTS guard (per A37).(b) Scope-changed already accounted for. A37 already specifies PSSaaS deploys this table explicitly via 010. The DDL we deploy mirrors UE's auto-create block (NVO 13267-13274) exactly so legacy + PSSaaS coexist without conflict. Empirically confirmed post-010-deploy: PS_DemoData pfill_powerfill_log now exists with PSSaaS-deployed shape.
F-6d-5NVO-vs-implementationUE proc takes 6 parameters (NVO 13252-13257): same 6 as conset per A40. w_powerfill.srw:170-172 passes the same ls_proc_parms array to both. WITH ENCRYPTION declared at NVO 13258 → A50 SET preamble required.(a) Documented. RunService Step 6 passes 6 params; 011 SQL has SET QUOTED_IDENTIFIER + SET ANSI_NULLS preamble per A50.
F-6d-6NVO-vs-docThe split point between _a (last data line NVO 16460 END) and _b (first data line NVO 16471 /* Reload Ranking Tables */ DELETE FROM #sumofloansmatched2trade;) is mid-statement-block — NOT at a GO, NOT at an END;BEGIN. The PB concatenation is purely byte-level. Implication: PSSaaS MUST emit a single CREATE PROCEDURE (one file, one batch); a 010a/010b split is structurally impossible.(a) Decided — single-file deploy is forced; resolves Plan §4.1 Strategy 1 independent of architectural preference.
F-6d-7NVO-vs-implementationUE re-invokes psp_powerfill_pool_guide at NVO 19795 — bare EXEC with no parameters (matches F-6c-4 + the proc taking 0 parameters). 6c's deploy of pool_guide is a hard prerequisite for 6d.(a) Documented. 6d depends on 6c's psp_powerfill_pool_guide being deployed (already shipped via 009 in d7ebfc0).
F-6d-8 (NEW from PS_DemoData PK probe)NVO-vs-tenant-DBsys.indexes PK probe against PS_DemoData reveals: pfill_syn_trade_base PK = (syn_trade_id, rate) CLUSTERED; pfill_syn_powerfill_guide PK = (loan_id) CLUSTERED; pfill_syn_powerfill_guide_all_rank no PK (heap); pfill_powerfill_log not present in PS_DemoData. Composite keys + heap config encoded in IEntityTypeConfiguration<T> classes; single-col keys via [Key] attribute.(a) Corrected in place via A55. EF entity registrations match empirical PK shapes; IntentionallyKeylessEntities registry in tests asserts the heap design intentional.

Pattern observation banked as A57: 6d's Gate produced 0 net-new Truth Rot findings on the kickoff/breakdown itself — F-6d-1, F-6d-2, F-6d-5, F-6d-6, F-6d-7 all confirmed kickoff claims as exact. The only contradiction was F-6d-3 against the syn-trades deep dive (a different upstream artifact). This is the first Phase 6 sub-phase where the kickoff was clean on its primary anchors. The 6d kickoff's 15+ specific NVO line citations made the gate's NVO-vs-doc layer a fast Boolean check. Banked observation: kickoff specificity at NVO-line-citation level reduces Truth Rot probability proportionally.

Alternatives-First Gate​

Two structural decisions documented in the Architect Report (planning checkpoint) and resolved at the planning stage:

  • Decision 1 (deploy file structure): chose B (010 + 011 split) over A (one combined file) and C (3-file mirroring PB structure). Rationale: reviewability + failure isolation + revertability + Phase 1 precedent. C is structurally impossible per F-6d-6.
  • Decision 2 (A54 forward strategy): PO-confirmed Option C (accept partial PoC; defer to Phase 9) over Option A (address now via ADR-021 amendment) and Option B (alternate fixture). Rationale per Architect recommendation: consistency with 6c sign-off; ADR-021 precedent risk minimisation; forensic value of partial PoC; calendar discipline.

Required Delegation Categories​

Delegated:

  • 011_CreatePowerFillUeProcedure.sql SQL transcription — 6,535 NVO source SQL data lines unwrapped to 6,613 output file lines (78 boilerplate). Subagent reported all 7 sanity anchors verified, all 5 forbidden content tokens at 0, block boundary join clean (output 3283 → 3284 = NVO 16460 END → NVO 16471 /* Reload Ranking Tables */). NVO offset analysis: -13177 within _a body; -13187 within _b body (10-line offset shift across the join from skipped PB metadata). Architect spot-checked 4 sampled regions independently (header NVO 13252-13260; pfill_powerfill_log auto-create NVO 13265-13275; teardown NVO 13441-13451; pool_guide re-EXEC + closing END NVO 19794-19796); all match exactly. Subagent SQL transcription pattern continues to scale: 670 lines (006), 5,837 lines (008), 3,274 lines (009), 6,613 lines (011) — all clean first-attempt.
  • 9 unit-test changes (1 modified + 8 net-new) — fast subagent per Template 2; mirrored Phase 6c additive-contract pattern. Subagent delivered ReadLints clean first-attempt.

Self-implemented with Deliberate Non-Delegation:

Deliberate Non-Delegation: SQL script generation from a documented schema
                           (>5 tables threshold — does NOT match: only 4 tables)
Task: 010_CreatePowerFillSynTradesSchema.sql — 4 CREATE TABLE blocks
      with IF OBJECT_ID guards, PRINT-in-guards (A32), A50 SET preamble,
      empirical-PS_DemoData column types per F-6d-3.
Reason for self-implementation: encodes F-6d-3 correction context
  (deep dive said syn_trade_id was int across all 3 tables; empirical
  reality is ONLY pfill_syn_trade_base.syn_trade_id is int); A37
  disposition (UE auto-creates pfill_powerfill_log but PSSaaS deploys
  explicitly so the dependency is visible at DDL deploy time); A50 SET
  preamble defensive consistency with 008/009; F-6d-8 PK shapes from
  empirical sys.indexes probe. Subagent overhead would exceed benefit
  for ≤4 tables.

Deliberate Non-Delegation: Templated entity scaffolding (>3 entities
                           threshold — matches: 4 entities)
Task: 4 EF Core entities for the syn-trades + log tables.
Reason for self-implementation: encodes F-6d-3 correction context
  (the 3 syn_trade_id types must match the empirical DDL exactly,
  not the deep dive's hypothesis); F-6d-8 PK shapes (heap for _all_rank
  via HasNoKey is a slightly different pattern from any of the existing
  21 entities); IDENTITY column on pfill_powerfill_log is also a new
  pattern. Per-entity attribute resolution requires reading the
  empirical info_schema output for each column — Architect already has
  it in this session's context.

Deliberate Non-Delegation: not a category match
Task: PowerFillRunService.RunUeStepAsync (~80 LOC) +
      PopulatePostUeCountersAsync (~20 LOC) + RunSummary 6 new fields +
      sentinel bump + spec amendments + 3 doc updates (assumptions log
      A28/A37/A52/A54/A55-A57 + completion + devlog).
Reason for self-implementation: encodes A54 Option C disposition arc;
  the 6-parameter EXEC pattern (mirrors Step 4 conset, different from
  Step 5's 0-param pool_guide); the post-UE summary-counter queries
  (post_ue_allocated_count differs from pre-UE allocated_count because
  UE rebuilds pfill_powerfill_guide); the best-effort post-failure
  counter hoist (D9); the Step 6 fail-fast contract; the RunSummary
  additive-contract preservation across 6 new fields. Doc updates
  encode the 8 Gate findings + decisions made + counterfactual retro
  context. None of this is delegable to a fast subagent without losing
  the encoded context.

Deliberate Non-Delegation: not a category match (build-feedback loop)
Task: EntityConfigurationTests.cs extensions for the 4 new entities
      (ExpectedTableNames + IntentionallyKeylessEntities registry +
      AllEntitiesHaveAPrimaryKeyConfigured keyless handling +
      CompositeKeys + SingleColumnKeys assertions).
Reason for self-implementation: surfaced as a build/test feedback-loop
  issue AFTER the entity registration was complete and the SQL deploys
  were verified. Three tests failed: Model_HasExpectedEntityCount (off
  by 4); AllEntities_MapToExpectedLegacyTableNames (4 missing names);
  AllEntitiesHaveAPrimaryKeyConfigured (PowerFillSynPowerFillGuideAllRank
  has no PK by design). All three needed encoding the F-6d-8 keyless
  decision + the 4 new table names. Encoding F-6d-8 in test-time mirrors
  the design intent.

Deploy Verification Gate​

ArmDescriptionEvidence
(a) Sentinel signal/api/powerfill/status returns the new sentinelcurl -s http://pssaas.powerseller.local/api/powerfill/status → {"module":"PowerFill","status":"phase-6d-ue-syn-trades-ready"} ✓ (post-restart)
(b) Live API runPOST /api/powerfill/run against PS_DemoData reaches the documented A56 outcomerun_id=88a7f1ac-..., status=Failed, duration 26.1s; Steps 1-4 all Succeeded (allocated_count: 515 — matches 6b/6c baseline; no regression); Step 5 (pool_guide) Failed with identical SqlException 2627 to 6c ((36177868, 3385000026) on ##cte_posting_set_1300 PK violation); Step 6 (ue) NOT recorded in response.Steps per fail-fast contract; all 6 new RunSummary fields = 0. Documented A54 + A56 expected behavior per Option C disposition.
(c) Live DB probe — local pssaas-db010 deploy clean; 011 deploy fails A49 family (expected — 6 base-schema columns missing locally)OBJECT_ID('dbo.psp_powerfillue', 'P') returns NULL (expected per A49); 4 new tables present (010 succeeded). PRINT line at end of 011 fired (separate batch) but proc not actually created. Documented A49 family expected behavior mirroring 008's local-pssaas-db behavior. Specifically failed columns: sequence_number, syntax, orig_loan_amount, cash_grid_rows, price_denominated, base_instrument_name.
(c) Live DB probe — PS_DemoData010 deploy clean (3 syn tables already existed per A28; pfill_powerfill_log new); 011 deploy cleanOBJECT_ID(N'dbo.psp_powerfillue', N'P') returns non-null + 4 new tables OBJECT_IDs all non-null. Idempotent re-deploy verified (DROP-then-CREATE pattern fires cleanly each time). ✓
(b)+ (c) NoteThe 4 new tables remain empty post-PoC on PS_DemoDataPer A56 disposition: Step 6 (UE) never reached due to Step 5 fail-fast on A54. Empirically confirmed via post-PoC SELECT COUNT(*): all 4 new tables = 0 rows; pfill_powerfill_guide = 515 (Step 4 wrote it; matches 6b/6c). Phase 9 parallel-validation against a clean Desktop App customer DB is the gate for full PoC observation.

Counterfactual Retro​

Knowing what I know now, what would I do differently?

  1. The PoC outcome was even more constrained than I anticipated. I planned for two scenarios: (a) A54 fires inside UE at NVO 19795 (the kickoff's framing); (b) A54 doesn't fire if UE's rebuild happened to dedupe. What actually happened: A54 fires in Step 5 BEFORE Step 6 even runs, because the PSSaaS orchestration's fail-fast contract short-circuits the run. Lesson: when the previous sub-phase's documented failure mode wraps the current sub-phase's entry point, the current sub-phase's PoC observability is structurally compromised regardless of the current sub-phase's correctness. Worth flagging in 6e planning: 6e's PoC sign-off needs to either (i) accept this same constraint, (ii) bypass Step 5/6 fail-fast for a "best-effort" mode that runs all steps and reports per-step status (potentially useful for forensic inspection), or (iii) fix A54 in Phase 9 first and then run 6e's full PoC.

  2. The keyless _all_rank entity surfaced a test-pattern gap I didn't anticipate. EntityConfigurationTests.AllEntitiesHaveAPrimaryKeyConfigured is a Phase-1 invariant lock that didn't account for keyless entities (none existed before 6d). I caught it via the test failure rather than via design, and the fix (an IntentionallyKeylessEntities registry) is good — but I should have surfaced the test-extension need at the entity-design step, not at the test-run step. Lesson: when introducing a new entity-registration pattern (keyless, identity, composite key, etc.), audit the EntityConfigurationTests assertion set BEFORE coding, not AFTER. The test-extension is then planned work, not feedback-loop work.

  3. F-6d-3 (deep dive column-type wrong) was the single Truth-Rot finding and was empirically resolvable in one sys.indexes query. The deep dive's Medium-confidence flag ("we haven't traced the population path") was honest and warranted; the column-type guess was the only confidence-level mismatch. Lesson: when a deep dive flags a confidence level explicitly, the implementing Architect should treat that as a Gate-pre-commitment to verify before consuming. (I did exactly this; just worth banking.)

  4. The 6d kickoff was 0 net-new Truth Rot findings (A57 banked observation). This is the first sub-phase where the kickoff was clean. Pattern correlation: granular NVO line citations (15+ specific lines vs vague ranges in 6a/6b/6c/pre-6b) seem to be self-verifying. Worth feeding into future kickoff drafting practice.

  5. The two-subagent parallel dispatch was efficient. Subagent 1 (SQL transcription, 6,613-line output) ran for ~5 minutes; subagent 2 (9 test changes) ran for ~2 minutes; both started in the same Architect tool-call batch and ran in parallel with my self-implementation work (010 schema + 4 entities + Step 6 + sentinel). Total Architect-session time was compressed by ~10-15 minutes vs serial dispatch. Lesson banked: when delegations are independent (no shared file dependencies), parallel dispatch compounds the velocity benefit of subagent delegation.

  6. The post-failure counter hoist (D9) was a small but high-value design decision. When Step 6 fails, calling PopulatePostUeCountersAsync in the catch block surfaces what UE managed to write before the failure point. In the 6d PoC against PS_DemoData this returned all zeros (Step 6 never reached because Step 5 failed first); but in a future PoC where A54 fires INSIDE UE at NVO 19795, the partially-populated syn tables would be visible. Lesson: for orchestration steps that wrap multi-statement procs, post-failure counter hoists should be the default pattern. Cheap insurance for forensic observability.

  7. Sub-phase calendar time: ~1 Architect-session (consistent with 6a, 6b, 6c, pre-6b sweep; well under the 7-10 day breakdown estimate). The aggressive subagent delegation pattern + reusable 6c infrastructure (PowerFillRunService extension pattern, RunSummary additive contract, test fixture, 008/009 SQL deploy precedents) compresses velocity dramatically. The 7-10-day estimate was calibrated for an Architect doing the SQL transcription manually — the subagent pattern materially changes the delivery velocity. Worth banking for future Architect breakdown estimates: Phase 6 sub-phase estimates should assume subagent delegation; 1-2 Architect-sessions per sub-phase is the new baseline.

PoC verification commands and outputs​

Status sentinel (Deploy Verification Gate arm a)​

$ curl -s http://pssaas.powerseller.local/api/powerfill/status
{"module":"PowerFill","status":"phase-6d-ue-syn-trades-ready"}

Local pssaas-db deploy of 010 (Deploy Verification Gate arm c — local schema)​

$ docker exec pssaas-db /opt/mssql-tools18/bin/sqlcmd -S localhost -U sa \
    -P "PSSaaS_Dev_2026!" -No -d PSSaaS_Dev \
    -i /docker-entrypoint-initdb.d/powerfill/010_CreatePowerFillSynTradesSchema.sql

PowerFill 010: created pfill_syn_trade_base
PowerFill 010: created pfill_syn_powerfill_guide_all_rank
PowerFill 010: created pfill_syn_powerfill_guide
PowerFill 010: created pfill_powerfill_log
PowerFill 010: deploy complete

Local pssaas-db deploy of 011 (Deploy Verification Gate arm c — local proc; A49 family expected)​

$ docker exec pssaas-db /opt/mssql-tools18/bin/sqlcmd ... -i .../011_CreatePowerFillUeProcedure.sql

Msg 207, Level 16, Procedure psp_powerfillue, Line 1139: Invalid column name 'sequence_number'.
Msg 207, Level 16, Procedure psp_powerfillue, Line 1137: Invalid column name 'syntax'.
Msg 207, Level 16, Procedure psp_powerfillue, Line 1146: Invalid column name 'sequence_number'.
Msg 207, Level 16, Procedure psp_powerfillue, Line 1144: Invalid column name 'syntax'.
Msg 207, Level 16, Procedure psp_powerfillue, Line 1533: Invalid column name 'orig_loan_amount'.   (4×)
Msg 207, Level 16, Procedure psp_powerfillue, Line 1516: Invalid column name 'orig_loan_amount'.   (2×)
Msg 207, Level 16, Procedure psp_powerfillue, Line 5778: Invalid column name 'cash_grid_rows'.
Msg 207, Level 16, Procedure psp_powerfillue, Line 5765: Invalid column name 'cash_grid_rows'.
Msg 207, Level 16, Procedure psp_powerfillue, Line 5770: Invalid column name 'price_denominated'.
Msg 207, Level 16, Procedure psp_powerfillue, Line 5773: Invalid column name 'base_instrument_name'.
PowerFill 011: created psp_powerfillUE

Documented A49 family expected behavior — UE references base-schema columns (pscat_loan_stages.syntax, pscat_trade_cash_grid.sequence_number, loan.orig_loan_amount, pscat_instruments.cash_grid_rows, rmcat_todays_prices.price_denominated, pscat_instruments.base_instrument_name) that are NOT in the local pssaas-db seed schema. SQL Server's deferred name resolution does NOT defer column references when the table exists, so the proc CREATE fails. PRINT line at end fires (separate batch from CREATE) but OBJECT_ID('dbo.psp_powerfillue','P') returns NULL (verified post-deploy). Mirrors 008's local behavior per A49.

PS_DemoData deploy of 010 (idempotent on existing syn tables; pfill_powerfill_log new)​

$ docker exec -e PWORD='M0th3rFuck1ng$44$' pssaas-db sh -c \
    '/opt/mssql-tools18/bin/sqlcmd -S "hostedps-sql.public.086ea791c2f1.database.windows.net,3342" \
       -U "kevin_pssaas_dev" -P "$PWORD" -No -d PS_DemoData \
       -i /docker-entrypoint-initdb.d/powerfill/010_CreatePowerFillSynTradesSchema.sql'

PowerFill 010: pfill_syn_trade_base already exists, skipped
PowerFill 010: pfill_syn_powerfill_guide_all_rank already exists, skipped
PowerFill 010: pfill_syn_powerfill_guide already exists, skipped
PowerFill 010: created pfill_powerfill_log
PowerFill 010: deploy complete

The 3 pfill_syn_* tables were preserved (legacy population from prior Desktop App runs); pfill_powerfill_log was net-new (per F-6d-4: PS_DemoData created via PowerSeller 7→8 schema-only upgrade per A44, which skipped UE auto-create).

PS_DemoData deploy of 011 (clean)​

$ docker exec -e PWORD='M0th3rFuck1ng$44$' pssaas-db sh -c \
    '/opt/mssql-tools18/bin/sqlcmd ... -i .../011_CreatePowerFillUeProcedure.sql'

PowerFill 011: created psp_powerfillUE

PS_DemoData OBJECT_ID confirmation (Deploy Verification Gate arm c — tenant)​

$ docker exec ... -Q "<5-object OBJECT_ID query>"
ue_proc      log_table    syn_base    syn_all_rank    syn_guide
present      present      present     present         present

Live API run (Deploy Verification Gate arm b — A54+A56 expected outcome)​

$ curl -s --max-time 700 -X POST -H "X-Tenant-Id: ps-demodata" \
    -H "Content-Type: application/json" \
    "http://pssaas.powerseller.local/api/powerfill/run" -d '{}' | jq .

{
  "run_id": "88a7f1ac-0813-433a-a8b3-c1f5706e2515",
  "tenant_id": "ps-demodata",
  "started_at": "2026-04-18T16:43:26.2283218Z",
  "completed_at": "2026-04-18T16:43:52.3168124Z",
  "status": "Failed",
  "duration": "00:00:26.0884906",
  "summary": {
    "constraint_count": 3,
    "candidate_count": 0,
    "carry_matched": 0,
    "carry_missed": 0,
    "candidates_per_constraint": { "FHLMC|...": 0, ... },
    "allocated_count": 515,
    "kicked_out_count": 0,
    "cblock_count": 0,
    "pool_guide_count": 0,
    "syn_trade_base_count": 0,
    "syn_powerfill_guide_all_rank_count": 0,
    "syn_powerfill_guide_count": 0,
    "pfill_powerfill_log_count": 0,
    "post_ue_allocated_count": 0,
    "post_ue_pool_guide_count": 0
  },
  "steps": [
    { "step_name": "bx_cash_grids",        "status": 2 (Skipped) },
    { "step_name": "bx_settle_and_price",  "status": 0 (Succeeded), 107ms },
    { "step_name": "candidate_builder",    "status": 0 (Succeeded), 1.16s },
    { "step_name": "allocation",           "status": 0 (Succeeded), 22.65s },
    { "step_name": "pool_guide",           "status": 1 (Failed), 991ms,
      "error_message": "SqlException 2627: Violation of PRIMARY KEY constraint
        'PK__##cte_po__F0E022A277AA6428'. Cannot insert duplicate key in object
        'dbo.##cte_posting_set_1300'. The duplicate key value is
        (36177868, 3385000026)."
    }
    // Step 6 (ue) NOT recorded — fail-fast contract per A56
  ]
}

This is the documented A54 + A56 expected behavior for the PS_DemoData snapshot per Option C disposition. Steps 1-4 all green with allocated_count: 515 (matches 6b/6c baseline, no regression). Step 5 hits A54 at the IDENTICAL line/loan/trade as 6c. Step 6 NOT reached per orchestration fail-fast contract. Per A56: doubly-Phase-9-blocked since UE itself re-invokes pool_guide internally at NVO 19795 and would hit the same PK violation.

Post-PoC table state (forensic)​

$ docker exec -e PWORD='...' pssaas-db sh -c '... -d PS_DemoData -i <count probe>'
pfill_pool_guide                       0    (Step 5 failed before INSERTs)
pfill_powerfill_guide                  515  (Step 4 wrote it; matches 6b/6c)
pfill_powerfill_log                    0    (Step 6 never ran)
pfill_syn_powerfill_guide              0    (Step 6 never ran)
pfill_syn_powerfill_guide_all_rank     0    (Step 6 never ran)
pfill_syn_trade_base                   0    (Step 6 never ran)

Tests​

$ docker exec pssaas-api dotnet build /app/PowerSeller.SaaS.sln --nologo
Build succeeded. 0 Warning(s). 0 Error(s).

$ docker exec pssaas-api dotnet test /app/PowerSeller.SaaS.sln --nologo --no-build
BestEx:    32 passed,  0 skipped, 0 failed
Api:        1 passed,  0 skipped, 0 failed
PowerFill: 125 passed,  6 skipped, 0 failed   (was 117 + 6 + 0 pre-6d — added 8 net-new tests)
TOTAL:    158 passed,  6 skipped, 0 failed

The 9 test changes (1 modified + 8 net-new):

  • Renamed StepNames_AreFiveInExpectedOrder → StepNames_AreSixInExpectedOrder (extends 6c's lock to include StepUe)
  • Added Run_UeStepNotReached_WhenPriorStepFails (fail-fast contract for Step 6)
  • Added 6 RunSummary_*Field_DefaultsToZero tests (one per new field)
  • Added RunSummary_All6dFields_SerializeAsSnakeCase (consolidated JSON contract lock for all 6 new fields)

Plus 4 EntityConfigurationTests extensions (self-implemented as build-feedback-loop fixes):

  • ExpectedTableNames extended with 4 new table names
  • IntentionallyKeylessEntities registry added containing PowerFillSynPowerFillGuideAllRank
  • AllEntitiesHaveAPrimaryKeyConfigured updated to handle keyless entities (assert FindPrimaryKey() returns null for entries in registry)
  • CompositeKeys_MatchLegacyDdl extended with PowerFillSynTradeBase (SynTradeId, Rate)
  • SingleColumnKeys_MatchLegacyDdl extended with PowerFillSynPowerFillGuide (LoanId) + PowerFillPowerFillLog (LogId)

The 6 skipped: 4 pre-existing PFILL_TEST_SQLSERVER-env-gated SQL integration tests (unchanged); 2 InMemory-blocked Phase 6a placeholders (unchanged).

Open questions and blockers​

Carry-over to 6e kickoff​

A54 (legacy proc PK bug on PS_DemoData) — STILL DEFERRED Phase 9. Per Option C (PO-confirmed at 6d planning checkpoint), 6d ships with the same A54 disposition as 6c.

A56 (Step 5 fail-fast cascade) — STILL OBSERVATION, doubly-blocked with A54. 6e's PoC sign-off needs to either (i) accept this same constraint, (ii) bypass Step 5/6 fail-fast for a "best-effort" mode that runs all steps and reports per-step status (potentially useful for forensic inspection but inverts the established fail-fast contract), or (iii) wait for Phase 9's A54 fix to enable full PoC observation. 6e Architect should plan around this.

A57 (kickoff specificity reduces Truth Rot) — BANKED. Worth advancing to v3.1 nomination alongside the existing 3-session-corroborated "Reference docs are not primary source" candidate. PO acknowledgment requested.

Architect recommendation for 6e​

The 6e Architect should not attempt to fix A54 in 6e scope (that's Phase 9 work per ADR-021 verbatim discipline). Instead:

  • Recommend 6e's PoC sign-off accept the same A54 constraint as 6c+6d (status: Failed at Step 5; Step 6 never reaches; 4 new tables empty; sentinel reflects async run lifecycle correctness independent of A54).
  • Ship 6e's BackgroundService + audit table + concurrency guard independent of A54 — those are orthogonal concerns to the legacy proc PK bug.
  • Defer end-to-end "Phase 6 complete" PoC sign-off to Phase 9 — the canonical Phase 6 completion sentinel is phase-6e-async-runs-ready, but the FULL end-to-end PoC against PS_DemoData (or any A54-fixed DB) waits for Phase 9 parity-validation work.

PO action requested: acknowledge that 6e's PoC sign-off scope excludes end-to-end UE observation per A54 carry-over.

  1. Collaborator review of:
    • 010_*.sql (235 lines — 4 simple table CREATEs; review focus is column-type accuracy vs F-6d-3 + PK shapes vs F-6d-8)
    • 011_*.sql (6,613 lines — mechanical transcription; review focus is structural-anchor verification + spot-checks at the 4 sampled regions per the subagent's report; the Architect spot-checked 4 regions independently)
    • 4 EF entity files + 2 entity-config additions
    • PowerFillRunService Step 6 extension (~80 LOC + ~20 LOC PopulatePostUeCountersAsync helper)
    • RunContracts.cs 6 new RunSummary fields
    • PowerFillModule sentinel bump + 4 entity registrations
    • 9 RunService test changes + 4 EntityConfigurationTests extensions
    • Spec amendments (Post-Allocation requirements, Run APIs row, Phase 6d PSSaaS-explicit tables)
    • 7 assumptions log changes (A28/A37 RESOLVED; A52/A54 updated; A55/A56/A57 added)
    • This completion report
    • Devlog entry Estimated 1.5-2.5 hours (6c was 1.5-2h; 6d is comparable scale + 6,613-line transcription + the A56 PoC observation to discuss).
  2. PO sign-off on:
    • A28 RESOLVED disposition (4 tables now PSSaaS-owned; deep dive column-type hypothesis F-6d-3 corrected)
    • A37 RESOLVED disposition (pfill_powerfill_log deployed explicitly; legacy auto-create preserved verbatim for coexistence)
    • A56 OBSERVATION (Step 5 fail-fast cascade prevents Step 6 PoC; doubly Phase-9-blocked) — acknowledgment that 6d ships with structural-only validation per Option C; Phase 9 is the gate for full UE PoC observation
    • A57 BANKED OBSERVATION (kickoff specificity reduces Truth Rot) — advancement to v3.1 nomination
  3. PO push of the atomic commits (Architect commits; PO controls git push).
  4. Sub-phase 6e kickoff drafting — prerequisites: 6d's 4 new tables + UE proc deployed; 6d's RunService Step 6 in place; A54 + A56 carry-over acknowledged. 6e adds async runtime + pfill_run_history + BR-8 single-active-run guard + BR-9 failure cleanup + PoC sign-off (with A56 carry-over scope-limit).
  5. Optional follow-up (deferred to Phase 9): A54 PK fix (##cte_posting_set_1300 PK extended from 2 to 3 cols); ADR-021 amendment for "narrow legacy bug fixes"; Tom/Greg consultation on the 5 syn-trades deep-dive Open Questions; full end-to-end UE PoC against a clean Desktop App customer DB.

Notes on this session's process​

  • Three-layer Primary-Source Verification Gate exercised in earnest; produced 8 findings across all 3 layers (NVO-vs-doc: F-6d-1, F-6d-2, F-6d-6; NVO-vs-implementation: F-6d-5, F-6d-7; NVO-vs-tenant-DB: F-6d-3, F-6d-4, F-6d-8). First Phase 6 sub-phase where the kickoff was clean on its primary anchors (F-6d-1, F-6d-2, F-6d-5, F-6d-6, F-6d-7 all confirmed kickoff claims as exact). Banked observation A57: kickoff specificity at NVO-line-citation level reduces Truth Rot probability.
  • Reviewable Chunks at sub-phase scope — pre-delegation PO checkpoint EXERCISED before subagent dispatch. PO confirmed Option C for A54 in chat. The pattern paid off: SQL transcription succeeded cleanly first attempt; PoC outcome matched predicted Option C (no surprises post-delegation).
  • Required Delegation Categories classification: 011 SQL transcription delegated (~6,613 lines, mechanical, fast subagent — 4th clean first-attempt scaling success after 6a 670 + 6b 5,837 + 6c 3,274); 9 unit-test changes delegated (Template 2; mirrored 6c additive-contract pattern); 010 schema + 4 EF entities + Step 6 + 6 RunSummary fields + sentinel + docs all self-implemented with Deliberate Non-Delegation justifications.
  • Two-subagent parallel dispatch — both subagents launched in the same Architect tool-call batch and ran in parallel with self-implementation work. ~10-15 min Architect-session compression vs serial dispatch. Banked process pattern: parallel dispatch of independent delegations compounds the velocity benefit.
  • Andon-cord readiness — A54 firing in 6d Step 5 was the predicted Option C outcome, not a surprise; no need to pull the cord. The build-feedback loop on EntityConfigurationTests (3 failures) was a routine test-extension fix, not an Andon-cord situation.
  • Counterfactual Retro filled with 7 named observations — most important: (1) The PoC outcome (Step 5 short-circuits Step 6 via fail-fast) was even more constrained than I anticipated; (2) Keyless _all_rank entity surfaced an EntityConfigurationTests gap I should have anticipated at design time, not test-run time; (5) Two-subagent parallel dispatch compounds velocity; (7) Phase 6 sub-phase estimates should assume subagent delegation — 1-2 Architect-sessions per sub-phase is the new baseline.
  • Deploy Verification Gate all 3 arms exercised: sentinel green; live API reaches the documented A56 outcome (Step 5 fails A54; Step 6 never recorded; 4 new tables empty); OBJECT_ID confirms 4 new tables + UE proc deployed on PS_DemoData (010 + 011 both clean); 010 deploys clean on local pssaas-db (4 tables present), 011 fails A49 family on local (UE proc absent — documented expected behavior).
  • Sub-phase calendar time: ~1 Architect-session (consistent with 6a, 6b, 6c, pre-6b sweep; well under the 7-10 day breakdown estimate). Reasons: A54 disposition resolved at planning checkpoint; subagent SQL transcription succeeded cleanly first attempt at largest-yet scale; 6c infrastructure (PowerFillRunService extension pattern, RunSummary additive contract, test fixture, 008/009 SQL deploy precedents) directly reusable; A56 observation had clear disposition path matching 6c precedent.

Phase 6d is code complete; A28 + A37 RESOLVED; Step 6 (ue) is in place + structurally deploys + sentinel reflects phase-6d-ue-syn-trades-ready; A54 + A56 are documented Phase 9 carry-overs with explicit disposition. The Phase 6e Architect can dispatch their work with full visibility into A54 (legacy proc PK bug) + A56 (Step 5/6 fail-fast cascade); 6e ships async runtime + audit + concurrency guard + scope-limited PoC sign-off independent of A54.

End of pre-Phase 6e sub-phase 6d completion report.