docs: update msfs-data-import.md after clean-slate reset

- Cleared all MSFS-derived (address-geocoded) GPS
- Only real field GPS (28 assets from photo EXIF) remains
- Documented backup locations and clean-slate process

Refs #46

.gitignore

@@ -1,11 +1,12 @@
+cert.pem
 *.db
 *.db-journal
 *.db-shm
 *.db-wal
-uploads/*.jpg
-uploads/*.png
 key.pem
-cert.pem
+*.pre-msfs-import
 __pycache__/
-.venv/
+uploads/*.jpg
 uploads/photos/
+uploads/*.png
+.venv/

docs/msfs-data-import.md

@@ -2,10 +2,12 @@
 
 > How Microsoft Dynamics 365 Field Service data was extracted, merged with Cantaloupe data, and imported into the Canteen Asset Tracker.
 >
-> **Date:** 2026-05-28
-> **Assets in DB:** 9,636 (up from 1,848)
-> **Assets with GPS:** 28
-> **Backup saved:** `assets.db.20260528_214316.pre-msfs-import`
+> **Date:** 2026-05-28 (initial), 2026-05-28 (clean-slate reset)
+> **Assets in DB:** 9,636
+> **Assets with real GPS:** 28 (field-collected, not address-geocoded)
+> **GPS backup:** `/tmp/gps_restore.sql` (28 UPDATE statements by machine_id)
+> **Pre-import backup:** `assets.db.20260528_225934.pre-msfs-import`
+> **Note:** All GPS from MSFS (address-geocoded) was cleared during the clean-slate reset. Only real field GPS (from technician photo EXIF) remains.
 
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