snapshot 2026-07-28: E-DQ1 coord repair + E-DQ2 cross-source dedup

Regenerate canonical stations/connectors with two data-quality passes.

interim/canonical/ (19,507 stations, 49 cols) — new columns:
E-DQ2 identity: physical_id, is_primary, dup_group_id, dup_dist_m
329 rows marked is_primary=False (cross-source duplicates)
E-DQ1 coords: lat_raw, lng_raw, coord_src, coord_resolved, coord_fix_dist_m
38 rows coord_resolved=False (placeholder), h3_r8 NULL

Supply filter is now:
is_operational & access=='PUBLIC' & is_primary & coord_resolved -> 19,015

New QA sidecars (both report all_gates_pass=true):
interim/fix_coords_report.json + fix_coords_flagged.csv
interim/crosssource_dedup_report.json + crosssource_dedup_groups.csv
interim/edq1_suspect_stations.csv (deferred to E-DQ3)
raw/MANIFEST.json (E-DQ10 snapshot freeze, id 2026-07-20)

processed/ — dev runs, NOT consistent with the interim layer above:
scope narrowed national -> hanoi (candidate_sites 16,793->1,711,
covered0 16,040->2,293), and both predate the E-DQ1 fix. Documented
in README; regeneration tracked as follow-up.

Bundled tarballs (vinfast details, evcs timeseries) unchanged.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

README.md

@@ -12,18 +12,93 @@ Data snapshot for the VGreen EV charging-station siting project (Vietnam).
 Sources: evcs.vn (supply), VinFast official (verification), OSM (POI + roads),
 WorldPop (population). See the project `docs/` for the full data-layer overview.
 
+**Snapshot:** `2026-07-28` · frozen input snapshot id `2026-07-20`
+(see `raw/MANIFEST.json` for per-source checksums and freeze provenance).
+
 ## Layout
 
-- `raw/` — immutable crawled/downloaded sources
-- `interim/` — cleaned / intermediate artifacts (canonical stations & connectors, demand_h3, OSM, WorldPop, landuse)
+- `raw/` — immutable crawled/downloaded sources (+ `MANIFEST.json` freeze manifest)
+- `interim/` — cleaned / intermediate artifacts (canonical stations & connectors, demand_h3, OSM, WorldPop, landuse) + QA sidecars
 - `processed/` — model-ready outputs (`candidate_sites`, `covered0`)
 - `external/` — external references (electricity OpEx tariff)
 
+## What changed in this version
+
+This release lands two data-quality passes on the canonical station layer
+(**E-DQ2** cross-source identity resolution, **E-DQ1** coordinate repair). The
+canonical parquet files under `interim/canonical/` were fully regenerated and
+carry new columns; downstream consumers should re-read the schema.
+
+### Canonical stations — 19,507 rows, 49 columns
+
+New identity columns (**E-DQ2**, cross-source dedup between evcs and VinFast official):
+
+| Column | Meaning |
+| --- | --- |
+| `physical_id` | Stable id of the *physical* station; duplicate rows across sources share one |
+| `is_primary` | `False` on the 329 rows that are duplicates of another row |
+| `dup_group_id`, `dup_dist_m` | Which group a row was merged into, and the merge distance |
+
+New coordinate-provenance columns (**E-DQ1**, placeholder-coordinate repair):
+
+| Column | Meaning |
+| --- | --- |
+| `lat_raw`, `lng_raw` | Original coordinates, always preserved |
+| `coord_src` | `evcs` (19,469) or `placeholder` (38) |
+| `coord_resolved` | `False` where the coordinate is a known-bad placeholder |
+| `coord_fix_dist_m` | Distance moved if a coordinate was snapped |
+
+`h3_r8` is recomputed from resolved coordinates and is **NULL** on the 38
+unresolved rows — those stations have no trustworthy location and must not
+anchor coverage.
+
+**Rows are flagged, never deleted.** The correct supply filter is:
+
+```python
+supply = df["is_operational"] & (df["access"] == "PUBLIC") & df["is_primary"] & df["coord_resolved"]
+# -> 19,015 stations
+```
+
+### New QA sidecars in `interim/`
+
+- `fix_coords_report.json`, `fix_coords_flagged.csv` — E-DQ1 gates + flagged rows
+- `crosssource_dedup_report.json`, `crosssource_dedup_groups.csv` — E-DQ2 gates + merge groups
+- `edq1_suspect_stations.csv` — coordinates deferred to E-DQ3 for adjudication
+
+Both report files record `all_gates_pass: true` for this snapshot.
+
+## ⚠️ Caveats on `processed/`
+
+The two `processed/` artifacts in this release are **development runs and are
+not consistent with the `interim/` layer shipped alongside them.** Treat
+`interim/canonical/` as the source of truth and regenerate `processed/`
+yourself if you need it.
+
+**1. Scope narrowed from national to Hanoi.** Previous releases were
+national-scope; these were built with `--city hanoi` (25 km core radius + 5 km
+buffer):
+
+| | previous release | this release |
+| --- | --- | --- |
+| `candidate_sites` | national, 16,793 | Hanoi, 1,711 |
+| `covered0` | national, 16,040 | Hanoi, 2,293 |
+
+**2. Both predate the E-DQ1 fix.** `candidate_sites` was built before
+`fix_coords` ran, and `covered0` predates both E-DQ1 and E-DQ2. Neither output
+reflects the 38 `coord_resolved=False` stations or the 329 `is_primary=False`
+duplicates. The `covered0` builder in particular still filters on the older
+`DUP_COORD` / `COORD_ADDR_MISMATCH` flags rather than `coord_resolved` /
+`is_primary`.
+
+Regenerating both against the current canonical layer is tracked as follow-up
+work.
+
 ## Bundled archives (extract before use)
 
 Two folders that contained tens of thousands of tiny files were bundled into
 single compressed archives to keep the repo pushable within Hugging Face rate
-limits. Extract them to restore the original per-file layout:
+limits. These are **unchanged in this release**. Extract them to restore the
+original per-file layout:
 
 ```bash
 # 23,240 per-locator detail JSONs  ->  raw/vinfast_official/details/

interim/canonical/connectors/{province_code=AGI/9be2a19b55e14f9cbf1036f1c015263c-0.parquet → province_code=AC/643f9c432ef6427aa36d413fbd992514-0.parquet}

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:b34be4c4c93b90010d456f560c445c3849cbde2fd73971cbb699b1a6c66308d0
-size 12927
+oid sha256:a85a42afddda360481d2f5f4f031d499e89761ac35901eb7518fed156bc0adf0
+size 10287

interim/canonical/connectors/{province_code=BDU/9be2a19b55e14f9cbf1036f1c015263c-0.parquet → province_code=AGI/643f9c432ef6427aa36d413fbd992514-0.parquet}

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:c790a4fbaa304e5818d110ef68660db9b1afc37749d3d0c0935e065ed2bb3923
-size 11542
+oid sha256:d4dde3dbc79f1c7ad6bb49533b4dd668b7867300507d280fe9f5b29c6eb7dcf2
+size 14118

interim/canonical/connectors/{province_code=AC/9be2a19b55e14f9cbf1036f1c015263c-0.parquet → province_code=BDI/643f9c432ef6427aa36d413fbd992514-0.parquet}

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:908f25a545d7f54e0d434945c3d5f01d660f7c596f445e1a8bf56b083c2f0e20
-size 9043
+oid sha256:2e1a2f332e196987b6a0a7ddad2ede373693c59e24f04abe06c969fe000fb057
+size 8431

interim/canonical/connectors/province_code=BDU/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b374280c4a184d33fa2dafb2b1cd6e93837dd5cf03ece096768095ab91631d1e
+size 12731

interim/canonical/connectors/province_code=BGI/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:01ca7b9ae0b67d5a3e199e98477a9d339e8fd61f20b316b0040480bdcc86e874
+size 13659

interim/canonical/connectors/province_code=BGI/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:aa62d66e254d0f71ba7a6595619ad8d17b003151d637569026ed2f1142997ba2
-size 12476

interim/canonical/connectors/province_code=BKA/{9be2a19b55e14f9cbf1036f1c015263c-0.parquet → 643f9c432ef6427aa36d413fbd992514-0.parquet}

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:bf7d5b56223c5c7a3db26c78cbfe8fecefd89d9c14216e33b81ff192c6a6b3bf
-size 6108
+oid sha256:d41ea68c971c644914c466871cfed3f50bb77e82c7d59300b0b0485aa3b19430
+size 7257

interim/canonical/connectors/{province_code=BDI/9be2a19b55e14f9cbf1036f1c015263c-0.parquet → province_code=BLI/643f9c432ef6427aa36d413fbd992514-0.parquet}

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:613ed7a970235b92c2abb7a56e29c40f2d690f862996b26b134508093bdcd461
-size 7264
+oid sha256:f50dab92f79478b6663835665117d9418684d6054296936ce0fcc12594a7c872
+size 7368

interim/canonical/connectors/province_code=BNI/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c6f98a0797f6366ff1a39ee27bb58ff32cf00a2c9acbe034613e4da6950ba9b1
+size 25372

interim/canonical/connectors/province_code=BNI/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:48703795257fff8b9be8d68c0ffae29791e853d9f2421204c688dea772ccd732
-size 24071

interim/canonical/connectors/{province_code=BLI/9be2a19b55e14f9cbf1036f1c015263c-0.parquet → province_code=BPH/643f9c432ef6427aa36d413fbd992514-0.parquet}

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:5067278dd5491e2510ed00771c3db18f78532641c6f68dbe2bc947fe3f28d4df
-size 6222
+oid sha256:71f36df8617f1050f3c3077eaa9008a23355df2b9c5ffb1423700f557836e0f9
+size 8667

interim/canonical/connectors/province_code=BPH/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:25014675a94e283253381a941feb64dc5dfdcd47cec25369b329def95d99affc
-size 7509

interim/canonical/connectors/province_code=BTH/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9f92a59a0622e064c06319685c94f0260258d2945ef3cb7087657c5b0d36731c
+size 9179

interim/canonical/connectors/province_code=BTH/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:1d212c9aaa974b42cdaae42e781672829abf43ee54dbbfbb5f3e967bba7068fe
-size 8014

interim/canonical/connectors/province_code=BTR/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:054c27019f461168adbc2df492dbfd97f783132cef0efdacc67149d08f6a354b
+size 7867

interim/canonical/connectors/province_code=BTR/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6ec8aedc7a441d8ea8eb47c2ebd9b4b0923be01fe143d4eb4285f2c76443da38
-size 6711

interim/canonical/connectors/province_code=CBA/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d39b087f4cbc3676d9e0e0b29a181868ad952596e02f4d418c7871beffa7a58a
+size 9356

interim/canonical/connectors/province_code=CBA/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4992a673766c504d202c91bb883a1fa07be2a074abd03ddb5b225c61087d0bbd
-size 8183

interim/canonical/connectors/province_code=CMA/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eaa3f5f2c7463872badec8fe89911d1e93d5f2b3e838bf5c73000da031bb6f15
+size 11208

interim/canonical/connectors/province_code=CMA/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ae6e37b589e61adf9ea21f512b82b23980b1ae7656e3576e9d6e8a093698846f
-size 10031

interim/canonical/connectors/province_code=CTH/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5b9bac099e233550b5e03712f7956931dc786f3442039d28e7499010816625bf
+size 13480

interim/canonical/connectors/province_code=CTH/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7c6d037238cce954d7fdebd0e5a81fda57774e2f80b63bb38bd58547b15335ea
-size 12277

interim/canonical/connectors/province_code=DBI/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:179ee66cefaf0ea422e615e52fae4717a15f09443f8dc1e110060e25c715ea89
+size 9718

interim/canonical/connectors/province_code=DBI/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ca07bc55ddf1b111383fe14d717e118e82fab731e219292545d3b89106768665
-size 8545

interim/canonical/connectors/province_code=DLA/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9ae6dc6400b9ff7afa893241dbeadd16028835edb5795cd1cc5805b42d3a797a
+size 16047

interim/canonical/connectors/province_code=DLA/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c7f41fe85b0e74f5bff78108f4eec52506aaa7500f0d09f2500aa4884fcd23e3
-size 14841

interim/canonical/connectors/province_code=DNA/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cfc1efc637205d7c9c128f0283056e306f61fdb7818a72b764b9de39110336cb
+size 16502

interim/canonical/connectors/province_code=DNA/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:03be7e309748c631063e06f6a9a302cd6c0ff8a1a470501d7f4fe1febcdf0623
-size 15275

interim/canonical/connectors/province_code=DNI/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c6aa34a8181ba8f66f681f2e59b75463031ff14c00daca8a510c154d68e1b152
+size 27893

interim/canonical/connectors/province_code=DNI/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:84fe050b7e1677e637c213cd0aba07a41be1ae91641c903bf40612af632e16b5
-size 26613

interim/canonical/connectors/province_code=DNO/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c5893cdd82eb3aa4a19c50dd40c482822f2b8c50c32577b62063c471d62c013f
+size 8577

interim/canonical/connectors/province_code=DNO/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:f9021a969d2456220e27c31f15caec4d95548b1304ef59550d9d23504154f004
-size 7412

interim/canonical/connectors/province_code=DTH/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b896089eb26a83a582c561aac6affcef60a2245484a2e3b14cad4656a746b774
+size 13175

interim/canonical/connectors/province_code=DTH/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:aba491515a38d5677d34833ac8d62c39ccf11f3c933dcf268cfd7bd077a62aec
-size 11979

interim/canonical/connectors/province_code=GLA/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:58497517be685452fce0a92e3420d656d4c84e4f1018755e8f426fdb828e2652
+size 13382

interim/canonical/connectors/province_code=GLA/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:327cf5d68c76b1ac206c1d3d73f22b1e5c1f52cd95034d06c0c59246eb041fe1
-size 12175

interim/canonical/connectors/province_code=HAG/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:53356b6a73e29126f3f3fb92adf768762ad0fcbbb2d279cec3c3217169b4940b
+size 7719

interim/canonical/connectors/province_code=HAG/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c1821cf0bb66a949a3b0fe42bfa06d24053f7527bf95d946b256b09cf95145ec
-size 6569

interim/canonical/connectors/province_code=HBI/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fd6f42b00ccfd07fce84388d7317baabc8aa64b50e1b90c2cc5c9eb9a80e1011
+size 9297

interim/canonical/connectors/province_code=HBI/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:dfc220d24a5f71d33df3d959e29703cb217fd54e249dc41b806718b1057b80c9
-size 8126

interim/canonical/connectors/province_code=HCM/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9b5fd366a0b530c52de9dfd27f44e76490888b184ce594d8149977da9bd4d55e
+size 56223

interim/canonical/connectors/province_code=HCM/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:74bb40eda34a6a43d19c8249830831c25d85f53151e2dffa2ebe2349a0c4d6ac
-size 54750

interim/canonical/connectors/province_code=HDU/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:76d3f11dce6b584a400edf3dda05c9499e313e7ff4d3d979b52240475147c789
+size 10388

interim/canonical/connectors/province_code=HDU/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:f5f65e11a8bfb6d283e394fe591145a5685390474a16f7164cd50bd073aba15a
-size 9213

interim/canonical/connectors/province_code=HNA/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d6ecb791f4cc682ac87dd5c9deeb74e1d8fa4d445fae731e6682f0ebb8cc2806
+size 8379

interim/canonical/connectors/province_code=HNA/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:77b06bf4032643a39b7879176111b1fe13bfb842e4f1831c45df50ced7e967a7
-size 7212

interim/canonical/connectors/province_code=HNO/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ac76eb9c000a20f8447b4d518968609f94de98b555e3b372fa76f49a5d0fb95a
+size 71147

interim/canonical/connectors/province_code=HNO/9be2a19b55e14f9cbf1036f1c015263c-0.parquet

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ce82ca1810d9cbb89ecdba5397942f28851e39805bad64547579fcb5f27775c3
-size 69580

interim/canonical/connectors/province_code=HPH/643f9c432ef6427aa36d413fbd992514-0.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:077c920071d56891364d72d215fdab386d24b054cfffb3e8be2b759538937253
+size 24841