Docs: neutralize dataset card (SUMMARY_v2.md)

SUMMARY_v2.md

@@ -78,7 +78,6 @@ Cross-domain-datasets/
 ├── LICENSE                                      Top-level composite license
 ├── NOTICE.md                                    Required attributions per subset
 ├── DATA_CARD.md                                 Full Gebru-style data card
-├── CITATION.cff                                 Citation File Format with upstream refs
 ├── SUMMARY_v2.md                                ← this file
 ├── Piraeus_ship_trajectory_datasets/LICENSE     CC BY 4.0 (Tritsarolis 2022)
 ├── Piraeus_ship_trajectory_datasets/data_raw/
@@ -252,24 +251,6 @@ bash scripts/extras/post_rebuild_refresh.sh           # Stage 17 + publish
 | 16-2019osm | Piraeus historical-OSM env-SDF | `track_a_short-term_Cross-domain_Datasets/dma_track_v1/context_v1_2019osm/` |
 | 17-2019osm | Stage-17 against 2019 OSM      | `track_a_short-term_Cross-domain_Datasets/dma_track_v1/osm_temporal_consistency_2019osm/` |
 
-## 6  Downstream methods using this dataset
-
-| Repository                                              | Method                            | Uses             | Status              |
-|---------------------------------------------------------|-----------------------------------|------------------|---------------------|
-| `ICDE_conferece_dataset_paper/`                         | MARIS-Forecast v4 (25-baseline benchmark paper) | All 4, Track A + B | Submitted (ICDE 2026) |
-| `transformer_journal_OE_paper/`                         | EnvSocial-TrAISformer            | All 4, Track A + B | Phase 3 active       |
-| `Agent_Kun-VM1_paper_exp_all_folder/GeoMode_TKDE_paper` | SDF-gradient CVAE                 | All 4              | WIP                  |
-| `Agent_Kun-VM1_paper_exp_all_folder/ship_LLM_traj_pred_benchmark` | LMTraj adaptation     | All 4              | Submitted (AAAI proxy) |
-| `Agent_Kun-VM1_paper_exp_all_folder/MFPD_journal_paper_TKDE` | Diffusion (AAMAS 2025 + TKDE extension) | All 4 | Accepted             |
-| `Agent_Kun-VM1_paper_exp_all_folder/Anchordiff_AAAI2026_paper_reproduce` | AnchorDiff reproduction | DMA only | Reproduce-done       |
-| `M-CTX-ICDE_conference_dataprocess/`                    | Scalable spatial indexing         | Piraeus + Norway   | Submitted (ICDE 2027) |
-| `PPT_TKDE_journal_paper/`                               | PPT-Ship Transformer              | DMA only           | TKDE submission      |
-| `Trajectron++_journal_paper_OE/`                        | EICVAE                            | DMA only           | OE review            |
-| `DM-BDD_journal_paper_TKDE/`                            | DM-BDD-Ship diffusion             | DMA only           | TKDE revision        |
-
-Eight of ten downstream papers consume this dataset family; four of
-them consume the cross-domain extension directly.
-
 ## 7  Build wall times and current status
 
 The full v2 pass took the following CPU-time on the build host (single