feat(delphi): replay loader resolves private datasets under real_data/.local

[jucor]

dataset_dir() only globbed real_data/-, so the five private
datasets (bg2018, pakistan, engage, bg2050, FLI — slugs allowed in code
per the 2026-07-05 naming policy; report-id dirs still never appear) were
invisible to the replay harness and could not join the certify battery.
Now also searches real_data/.local/-, with top-level (public)
matches taking priority on slug collision. Groundwork for extending the
battery to all real_data datasets (GOAL_R1_PARITY.md Battery section).

commit-id:a543ecf1

---

Stack:

• ci: run postgres integration tests #2637
• feat(math): moderation + restart-seam replay coverage — mod_update parity, Q13-Q16 #2656
• docs(delphi): R1-parity goal docs, journal (2026-07-18 → 07-22 s3), quirks + divergence ledger #2626
• feat(delphi): Q12 carve-out — pin the cold-tick PCA start to ones in both replay drivers #2655
• feat(math): Q11 — replicate vectorz distance cancellation in legacy kmeans #2654
• feat(math): small-N degenerate parity — run the real math on tiny matrices in clojure-legacy mode #2653
• feat(delphi): Q10 carve-out — pin large-conv cutoffs to certify the deterministic full-PCA path #2652
• feat(delphi): replay loader resolves private datasets under real_data/.local #2651 ⬅
• feat(math): Clojure hash-map iteration order for the in-conv greedy tie-break (legacy) #2650
• feat(math): clojure-legacy blob emission + selection parity — Clojure-exact math_main at step 0 #2649
• feat(delphi): acceptance canonicalization — suppress cross-engine ordering artifacts in certify comparer #2648
• feat(delphi): certify.py battery runner + focuser + fingerprint ledger (Spec A, Phase 0) #2647
• feat(delphi): prodclone extractor — feature-filtered dataset export (Spec B) #2646
• feat(math): un-mirror priority_metric (#2571 resolved) + Q2 prev-tick group-votes #2645
• feat(math): participant-ban leak replication in clojure-legacy mode (Q1) #2644
• feat(delphi): Clojure timing probe (Spec C) #2643
• feat(math): degenerate-tick group-clusterings overwrite + <2-participants edge (legacy mode) #2642
• refactor(math): move impl-flag resolver to polismath/utils/env_flags.py #2641
• feat(delphi): Python math poller service (phase 1) — Clojure math-container replacement #2625
• fix(delphi): Clojure-parity math writers + committing write path in PostgresClient #2624
• feat(math): in-conv greedy floor + persistent carry (PR-E) #2623
• feat(math): Clojure-exact base-cluster lineage + warm start (PR-C) #2622
• feat(math): replay harness H-B — Clojure Mode A driver (dev/replay.clj) + cross-language comparer shim #2621
• feat(math): group-k-smoother in clojure-legacy engine mode (PR-D smoother) #2620
• feat(math): PCA warm start in clojure-legacy engine mode (PR-B) #2640
• feat(math): add POLISMATH_ENGINE_MODE flag + prev-tick warm-start scaffolding (PR-A) #2618
• feat(delphi): replay harness H-A — schedule spec+slicer, Python driver, store, step comparer, CLI #2639
• fix(delphi): cold-start generator copies FULL revote history (no DISTINCT ON dedup) #2638
• fix(math): correct comment-extremity sign in pca_project_cmnts (D1b) #2615
• docs(delphi): add math-algorithm history & routing-regression reference #2613

---

⚠️ Part of a stack created by spr. Do not merge manually using the UI - doing so may have unexpected results.

[github-actions]

Delphi Coverage Report

File	Stmts	Miss	Cover
init.py	2	0	100%
benchmarks/bench_pca.py	128	107	16%
benchmarks/bench_repness.py	81	65	20%
benchmarks/bench_update_votes.py	38	28	26%
benchmarks/benchmark_utils.py	34	24	29%
components/init.py	1	0	100%
components/config.py	165	133	19%
conversation/init.py	2	0	100%
conversation/conversation.py	1300	261	80%
conversation/manager.py	131	42	68%
database/init.py	1	0	100%
database/dynamodb.py	395	189	52%
database/postgres.py	310	166	46%
pca_kmeans_rep/init.py	5	0	100%
pca_kmeans_rep/clusters.py	257	21	92%
pca_kmeans_rep/corr.py	98	17	83%
pca_kmeans_rep/group_k_smoother.py	28	0	100%
pca_kmeans_rep/legacy_kmeans.py	151	6	96%
pca_kmeans_rep/pca.py	130	18	86%
pca_kmeans_rep/repness.py	223	6	97%
poller/init.py	4	0	100%
poller/math_writer.py	41	1	98%
poller/service.py	235	62	74%
poller/worker_pool.py	75	0	100%
regression/init.py	4	0	100%
regression/clojure_comparer.py	188	20	89%
regression/comparer.py	887	649	27%
regression/datasets.py	135	27	80%
regression/recorder.py	36	27	25%
regression/utils.py	130	85	35%
replay/init.py	2	0	100%
replay/certify.py	452	121	73%
replay/crosslang.py	128	3	98%
replay/driver.py	51	2	96%
replay/prodclone.py	184	16	91%
replay/real_data.py	21	2	90%
replay/schedule.py	125	6	95%
replay/stepcompare.py	77	1	99%
replay/store.py	120	11	91%
replay/types.py	65	8	88%
run_math_pipeline.py	261	114	56%
umap_narrative/500_generate_embedding_umap_cluster.py	210	109	48%
umap_narrative/501_calculate_comment_extremity.py	112	53	53%
umap_narrative/502_calculate_priorities.py	135	135	0%
umap_narrative/700_datamapplot_for_layer.py	502	502	0%
umap_narrative/701_static_datamapplot_for_layer.py	310	310	0%
umap_narrative/702_consensus_divisive_datamapplot.py	432	432	0%
umap_narrative/801_narrative_report_batch.py	785	785	0%
umap_narrative/802_process_batch_results.py	268	268	0%
umap_narrative/803_check_batch_status.py	183	183	0%
umap_narrative/llm_factory_constructor/init.py	2	2	0%
umap_narrative/llm_factory_constructor/model_provider.py	192	192	0%
umap_narrative/polismath_commentgraph/init.py	1	0	100%
umap_narrative/polismath_commentgraph/cli.py	270	270	0%
umap_narrative/polismath_commentgraph/core/init.py	3	3	0%
umap_narrative/polismath_commentgraph/core/clustering.py	108	108	0%
umap_narrative/polismath_commentgraph/core/embedding.py	104	104	0%
umap_narrative/polismath_commentgraph/lambda_handler.py	219	219	0%
umap_narrative/polismath_commentgraph/schemas/init.py	2	0	100%
umap_narrative/polismath_commentgraph/schemas/dynamo_models.py	160	9	94%
umap_narrative/polismath_commentgraph/tests/conftest.py	17	17	0%
umap_narrative/polismath_commentgraph/tests/test_clustering.py	74	74	0%
umap_narrative/polismath_commentgraph/tests/test_embedding.py	55	55	0%
umap_narrative/polismath_commentgraph/tests/test_storage.py	87	87	0%
umap_narrative/polismath_commentgraph/utils/init.py	3	0	100%
umap_narrative/polismath_commentgraph/utils/converter.py	283	237	16%
umap_narrative/polismath_commentgraph/utils/group_data.py	354	336	5%
umap_narrative/polismath_commentgraph/utils/storage.py	584	518	11%
umap_narrative/reset_conversation.py	159	50	69%
umap_narrative/run_pipeline.py	453	312	31%
utils/clj_hash.py	44	0	100%
utils/engine_mode.py	9	0	100%
utils/env_flags.py	13	0	100%
utils/general.py	62	41	34%
utils/serialization.py	9	5	44%
Total	12905	7654	41%