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PowerFill Phase 6d — UE Pass + Synthetic Trades Subsystem

Date: 2026-04-19 Agent: Systems Architect Scope: 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) into 011_CreatePowerFillUeProcedure.sql; 4 new tables (3 pfill_syn_* + pfill_powerfill_log) into 010_CreatePowerFillSynTradesSchema.sql; 4 new EF entities; integration as Step 6 of PowerFillRunService (ue); 6 new RunSummary fields for post-UE state; sentinel bumped to phase-6d-ue-syn-trades-ready. A28 + A37 RESOLVED (the 4 new tables are now PSSaaS-explicit). 8 net-new RunService unit tests + 1 extended (StepNames lock now 6-step) + 4 EntityConfigurationTests extensions for the new entities + keyless registry. A56 (NEW Phase-9 carry-over): Step 5 fail-fast cascade prevents Step 6/UE from executing on PS_DemoData — A54 in pool_guide fires before UE runs; doubly Phase-9-blocked since UE itself re-invokes pool_guide internally at NVO 19795.

This entry continues the Phase 6c arc. Read that first for the A54 disposition arc that 6d inherits.

Why this entry exists​

The Phase 6 sub-phase breakdown estimated 6d at 7-10 days (largest single proc port at ~6,556 NVO lines — 12% larger than 6b's 5,837). Actual elapsed time was ~1 Architect-session, consistent with 6a/6b/pre-6b/6c. The arc surfaced one significant Phase-9 carry-over (A56), resolved two long-open assumptions (A28 + A37), and produced a banked observation worth feeding into future kickoff drafting practice (A57). This entry persists the empirical findings + the Phase 9 carry-over rationale before they fade into commit messages.

Timeline (compressed)​

  1. Session-start checklist — re-read priority docs (CLAUDE.md, AGENTS.md, architect-context, process-discipline, handoff-prompts, breakdown, open-questions, 6c completion, syn-trades deep dive, A1 revised + A28 + A37 + A38 RESOLVED + A39 + A47 + A50 + A52 + A54). Verified environment: HEAD = d7ebfc0, sentinel phase-6c-pool-actions-ready ✓, working tree clean.
  2. Plan-stage Primary-Source Verification Gate — NVO Grep + PS_DemoData information_schema + sys.indexes produced 8 findings:
    • F-6d-1: Kickoff line ranges (NVO 13246-16463 + 16465-19801) verified exact via Grep. PB wrapper at NVO 5888-5896 calls _a() then _b(_a()); NVO 19798 confirms _b PREPENDS _a's output.
    • F-6d-2: NVO 13265-13275 log auto-create + NVO 19795 pool_guide re-EXEC + NVO 13441-13451 4 DELETEs all verified exact.
    • F-6d-3: Syn-trades deep dive said pfill_syn_powerfill_guide.syn_trade_id was the only int column; PS_DemoData reality is ONLY pfill_syn_trade_base.syn_trade_id is int(10,0) IDENTITY; the other two are varchar(30).
    • F-6d-4: pfill_powerfill_log does NOT exist in PS_DemoData (info_schema 0 rows). Confirms A37 hypothesis: nobody creates it via deploy; UE auto-creates at first run.
    • F-6d-5: UE proc takes 6 parameters (NVO 13252-13257), same as conset; WITH ENCRYPTION at NVO 13258 → A50 SET preamble required.
    • F-6d-6: Split point between _a last data line (NVO 16460 END) and _b first data line (NVO 16470 /* Reload Ranking Tables */ DELETE) is mid-statement-block → single-file deploy is structurally forced (resolves Plan §4.1 Strategy 1).
    • F-6d-7: UE re-invokes psp_powerfill_pool_guide at NVO 19795 with bare EXEC (no params); 6c's deploy of pool_guide is hard prereq.
    • F-6d-8: PS_DemoData sys.indexes PK probe: pfill_syn_trade_base (syn_trade_id, rate) CLUSTERED; pfill_syn_powerfill_guide (loan_id) CLUSTERED; pfill_syn_powerfill_guide_all_rank no PK (heap); pfill_powerfill_log not present.
  3. Pattern observation banked as A57: 6d's Gate produced 0 net-new Truth Rot findings on the kickoff itself — F-6d-1, F-6d-2, F-6d-5, F-6d-6, F-6d-7 all confirmed kickoff claims as exact. First Phase 6 sub-phase where the kickoff was clean on its primary anchors. Pattern: granular NVO line citations (15+ specific lines vs vague ranges in 6a/6b/6c/pre-6b) seem to be self-verifying.
  4. Reviewable Chunks pre-delegation PO checkpoint EXERCISED — Architect Report posted in chat with 8 Gate findings + 2 structural decisions + Architect recommendation for A54 Option C. PO confirmed Option C (accept partial PoC; verbatim port preserves A54 bug; Phase 9 is the gate; consistent with 6c sign-off).
  5. Internal plan authored at .cursor/plans/powerfill-phase-6d.plan.md (gitignored, 12-section template).
  6. Two-subagent parallel dispatch — Subagent 1 (011 SQL transcription, ~6,613-line target via Python helper) + Subagent 2 (9 unit-test changes, mirror 6c additive-contract pattern) both launched in same Architect tool-call batch. ~10-15 min Architect-session compression vs serial dispatch.
  7. Self-implemented in parallel with subagents:
    • 010_CreatePowerFillSynTradesSchema.sql — 4 CREATE TABLE blocks; idempotent guards + PRINT-in-guards (A32) + A50 SET preamble; empirical PS_DemoData column types per F-6d-3 + PK shapes per F-6d-8
    • 4 EF Core entities (PowerFillSynTradeBase, PowerFillSynPowerFillGuideAllRank keyless, PowerFillSynPowerFillGuide, PowerFillPowerFillLog)
    • PowerFillEntityConfiguration.cs — 2 new configurations (composite key + keyless HasNoKey())
    • PowerFillModule.cs — 4 entity registrations + sentinel bump to phase-6d-ue-syn-trades-ready
    • PowerFillRunService Step 6 (ue) extension (~80 LOC + ~20 LOC PopulatePostUeCountersAsync helper) — 6-parameter EXEC mirroring Step 4 conset; 10-min command timeout (D8); best-effort post-failure counter hoist (D9)
    • RunSummary 6 new fields (snake_case [JsonPropertyName])
  8. Subagent 1 returned (6,613 lines, all 7 sanity anchors verified, all 5 forbidden tokens at 0, block boundary join clean output 3283 → 3284). 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.
  9. Subagent 2 returned (1 modified + 8 net-new tests; ReadLints clean first-attempt).
  10. Local pssaas-db deploy — 010 clean (4 tables created); 011 fails A49 family (6 base-schema columns missing locally: sequence_number, syntax, orig_loan_amount, cash_grid_rows, price_denominated, base_instrument_name); proc OBJECT_ID NULL post-deploy. Documented A49 expected behavior mirroring 008's 6b local deploy.
  11. PS_DemoData deploy — both clean. 010: 3 syn tables preserved (existed from prior Desktop App runs per A28); pfill_powerfill_log net-new (per F-6d-4). 011: clean CREATE. All 5 OBJECT_IDs non-null post-deploy.
  12. dotnet build clean (0 warnings, 0 errors) inside pssaas-api container.
  13. First dotnet test run failed 3 EntityConfigurationTests — Model_HasExpectedEntityCount, AllEntities_MapToExpectedLegacyTableNames, AllEntitiesHaveAPrimaryKeyConfigured. This was a routine test-extension fix (not an Andon-cord situation): the test file is a Phase-1 invariant lock that needed to learn about the 4 new tables + the keyless _all_rank design.
  14. Self-implemented EntityConfigurationTests fix — ExpectedTableNames extended with 4 new names; IntentionallyKeylessEntities registry added; AllEntitiesHaveAPrimaryKeyConfigured updated to handle keyless entities; CompositeKeys_MatchLegacyDdl + SingleColumnKeys_MatchLegacyDdl extended for the 3 keyed new entities. Brief IsKeyless-property mismatch with EF8 IEntityType signature — fixed by switching to Assert.Null(efEntity.FindPrimaryKey()) for keyless entities.
  15. Final test sweep — 158 passed, 6 skipped, 0 failed (was 150/6/0 in 6c — added 8 net-new RunService tests; EntityConfigurationTests extensions don't add new test methods but extend assertions in existing ones).
  16. Live API PoC against PS_DemoData — POST /run returned status=Failed, duration 26.1s. Steps 1-4 all green with 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. 6 new RunSummary fields = 0.
  17. A56 named, banked, dispositioned — Step 5 fail-fast cascade prevents Step 6/UE from executing. Doubly-Phase-9-blocked: even if Step 5 fail-fast were bypassed, UE itself re-invokes pool_guide internally at NVO 19795. The 6d port is structurally correct; runtime exercise blocked by A54 (Phase 9 carry-over). Per Option C disposition (PO-confirmed at planning checkpoint).
  18. Spec amendment to powerfill-engine.md — Post-Allocation requirements section marked items 1-3 as [x] Phase 6d; added explicit [ ] DEFERRED to Phase 9 (per A54 + A56) for end-to-end UE PoC; Run APIs /run row extended with Step 6 + 6 new RunSummary fields + A56 caveat; new "Phase 6d PSSaaS-explicit tables" section documents the 4 new tables.
  19. Assumption log updated — A28 marked RESOLVED with full disposition arc + F-6d-3 column-type correction; A37 marked RESOLVED with explicit-deploy-vs-auto-create coexistence note; A52 + A54 updated with 6d-specific dispositions; A55 (PS_DemoData empirical PK probe + F-6d-3) added; A56 (Step 5 fail-fast cascade) added; A57 (kickoff specificity reduces Truth Rot) banked observation added; A52-A54 disposition section updated with 6d footnotes; new A55-A57 disposition section added.
  20. Completion report authored at docs-site/docs/handoffs/powerfill-phase-6d-completion.md.
  21. This devlog entry.

Decisions made​

#DecisionRationale
D1Two-file deploy: 010 (4 schema CREATEs) + 011 (UE proc CREATE)Reviewability + failure isolation; F-6d-6 makes 3-file split structurally impossible
D2A54 Option C (accept partial PoC; Phase 9 is the gate)PO-confirmed at planning checkpoint; consistent with 6c; ADR-021 verbatim discipline preserved
D3A50 SET preamble defensively applied to BOTH 010 and 011UE has WITH ENCRYPTION (required for 011); 010 doesn't need it but consistency with 008/009
D4Step 6 is its own step (not folded into Step 5)Mirrors Step 1-5 architecture; per-step contract; pre-UE vs post-UE measure different things
D5C# self-implemented; SQL + tests delegated; tests-extension self-implemented as build-feedback fixRequired Delegation Categories applied per cluster size + decision context
D6pfill_syn_powerfill_guide_all_rank registered as keyless (HasNoKey)F-6d-8 PS_DemoData empirical PK probe shows no PK; IntentionallyKeylessEntities registry asserts design intent
D7pfill_powerfill_log.LogId is int IDENTITY(1,1) matching NVO 13267-13274 auto-create byte-for-byteLegacy + PSSaaS coexistence per ADR-006
D810-min command timeout for Step 6 EXECMirrors 6b/6c D8; UE has more SQL than conset; production-scale runs may take minutes
D9Best-effort PopulatePostUeCountersAsync even on Step 6 failureForensic observability if A54 fires INSIDE UE at NVO 19795 (after syn tables ARE populated at NVO 19019-19790)

Full decision context in the Phase 6d completion report §"Decisions made".

Findings (Primary-Source Verification Gate output — 8 findings across 3 layers)​

IDLayerDisposition
F-6d-1NVO-vs-doc(a) Re-verified — kickoff line ranges exact
F-6d-2NVO-vs-doc(a) Re-verified — kickoff anchors exact (13265-13275, 13441-13451, 19795)
F-6d-3NVO-vs-tenant-DB(a) Corrected in place via A55 — deep dive column-type hypothesis wrong on pfill_syn_powerfill_guide.syn_trade_id
F-6d-4NVO-vs-tenant-DB(b) Scope-changed already accounted for via A37 — pfill_powerfill_log not in PS_DemoData
F-6d-5NVO-vs-implementation(a) Documented — 6 params + WITH ENCRYPTION
F-6d-6NVO-vs-doc(a) Decided — single-file deploy structurally forced
F-6d-7NVO-vs-implementation(a) Documented — UE re-EXECs pool_guide bare at NVO 19795
F-6d-8NVO-vs-tenant-DB(a) Corrected in place via A55 — empirical PK shapes (heap for _all_rank; composite for syn_trade_base; single-col for syn_powerfill_guide)

Pattern observation (banked as A57): Granular NVO citations at the line-number level are self-verifying. The 6d kickoff cited 15+ specific lines vs 6a/6b/6c/pre-6b's vaguer ranges — and was the first kickoff to produce 0 net-new Truth Rot findings.

A56 root cause (the headline observation)​

Claim: The 6d end-to-end PoC against PS_DemoData hits A54 in Step 5 (pool_guide) at the IDENTICAL line/loan/trade as the 6c PoC. Per the PowerFillRunService fail-fast contract established in 6a-6c, Step 6 (ue) is never reached when Step 5 fails.

Doubly-blocked: Even if I bypassed Step 5's fail-fast (an architectural deviation that contradicts the 6c-established orchestration contract), UE itself re-invokes pool_guide internally at NVO 19795. The same PK violation would fire from inside UE. The 6d UE proc body is structurally deployed (OBJECT_ID confirms presence on PS_DemoData) but is not exercised end-to-end until A54 is addressed.

Implication for Phase 9: the parallel-validation harness needs (a) a "data-shape compatibility" pre-flight that detects multi-pa_key duplicates upstream of the legacy proc; (b) an A54 fix in PSSaaS (ADR-021 amendment for "narrow legacy bug fixes") OR a clean Desktop App customer DB; (c) acknowledgment that BOTH Step 5 and UE's NVO 19795 re-invocation must satisfy the fix.

Implication for Phase 6e: the PoC sign-off scope should explicitly exclude end-to-end UE observation per A54 + A56 carry-over; ship 6e's BackgroundService + audit + concurrency guard independent of A54.

Test results​

$ 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 RunService test changes (1 modified + 8 net-new) + 4 EntityConfigurationTests extensions (registry + assertion updates).

Counterfactual Retro (7 named observations)​

  1. The PoC outcome was even more constrained than I anticipated. I planned for two scenarios; what actually happened was a third (Step 5 short-circuits Step 6 via fail-fast — A56). 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.
  2. The keyless _all_rank entity surfaced an EntityConfigurationTests gap I should have anticipated at design time. Lesson: when introducing a new entity-registration pattern (keyless, identity, composite key), audit the EntityConfigurationTests assertion set BEFORE coding.
  3. F-6d-3 (deep dive column-type wrong) was empirically resolvable in one sys.indexes query. Deep dive's Medium-confidence flag was honest and warranted. 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.
  4. The 6d kickoff was 0 net-new Truth Rot findings (banked as A57). Worth feeding into future kickoff drafting practice.
  5. Two-subagent parallel dispatch was efficient. ~10-15 min Architect-session compression vs serial dispatch. Lesson banked: parallel dispatch of independent delegations compounds the velocity benefit.
  6. The post-failure counter hoist (D9) was a small but high-value design decision. Lesson: for orchestration steps that wrap multi-statement procs, post-failure counter hoists should be the default pattern.
  7. Sub-phase calendar time: ~1 Architect-session. Banked: Phase 6 sub-phase estimates should assume subagent delegation; 1-2 Architect-sessions per sub-phase is the new baseline.

Files Produced / Modified​

New​

  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Sql/010_CreatePowerFillSynTradesSchema.sql
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Sql/011_CreatePowerFillUeProcedure.sql
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Domain/PowerFillSynTradeBase.cs
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Domain/PowerFillSynPowerFillGuideAllRank.cs
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Domain/PowerFillSynPowerFillGuide.cs
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Domain/PowerFillPowerFillLog.cs
  • docs-site/docs/handoffs/powerfill-phase-6d-completion.md
  • This devlog entry

Modified​

  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Domain/PowerFillEntityConfiguration.cs — +2 configurations
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/PowerFillModule.cs — +4 entity registrations + sentinel
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Services/PowerFillRunService.cs — Step 6 + helper
  • src/backend/PowerSeller.SaaS.Modules.PowerFill/Contracts/RunContracts.cs — +6 RunSummary fields
  • src/backend/tests/PowerSeller.SaaS.Modules.PowerFill.Tests/Services/PowerFillRunServiceTests.cs — +8 tests, 1 extended
  • src/backend/tests/PowerSeller.SaaS.Modules.PowerFill.Tests/EntityConfigurationTests.cs — keyless registry + extensions
  • docs-site/docs/specs/powerfill-engine.md — 3 amendments
  • docs-site/docs/specs/powerfill-assumptions-log.md — A28/A37 RESOLVED; A52/A54 updated; A55-A57 added

What's Next​

  • Collaborator review of 6d ship (~1.5-2.5h estimated); PO push.
  • Sub-phase 6e kickoff drafting — async runtime + pfill_run_history + BR-8 single-active-run guard + BR-9 failure cleanup + scope-limited PoC sign-off (A54 + A56 carry-over).
  • Phase 9 parallel-validation harness — design includes A54 fix consideration + A56 doubly-blocked scenario handling + Tom/Greg consultation on the 5 syn-trades deep-dive Open Questions.

Risks Captured​

  • A54 + A56 doubly-Phase-9-blocked PoC observability. 6d ships structurally correct but cannot demo end-to-end UE on PS_DemoData. Phase 9 is the gate.
  • R-6d-3 (A49 family on local pssaas-db for 011) — UE references 6 base-schema columns missing from local seed schema; 011 deploy fails on local. Documented expected behavior; mirrors 008's 6b local deploy.
  • R-6d-4 (PS_DemoData syn-trade DDL drift potential) — PS_DemoData's existing syn tables are preserved by 010's IF-NOT-EXISTS guards; if PS_DemoData was created from an even earlier PowerFill version, subtle column-shape drift may exist (per A29 family). Phase 9 is the parity gate.
  • A57 (kickoff specificity reduces Truth Rot) — banked observation worth advancing to v3.1 nomination alongside the 3-session-corroborated "Reference docs are not primary source" candidate. PO acknowledgment requested.