feat(cockpit): zoom the orbital view to the imaging sensor's swath

An imaging satellite with a known sensor can now zoom past 8x, up to 128x,
as far as the view stays at least as wide as the sensor's narrowest
standard swath at its live altitude; only swaths confirmed on a cited page
open those steps. The top step follows the altitude and window shape and
steps back when it falls below the zoom shown.

The view draws the sensor's swath to scale along the ground track with a
SENSOR SWATH readout (approximate off nadir), and a SENSOR button zooms to
exactly that width when it lies in range at nadir. From 16x the imagery
tiles the view will need 5 to 20 s ahead along the ground track are
pre-loaded at the matching level. The mouse wheel steps the zoom one notch
at a time, and the identity line shows how old the TLE is. The sensor
figures come from a new bundled pack of 46 Earth-observation platforms,
each value cited to its operator or agency, with its own data credit.

DATA_SOURCES.md

@@ -230,6 +230,7 @@ The [Bhote Koshi event pack](public/events/bhote-koshi-2026/README.md), under `p
 | **World camera image subset** (2,230 locations) | `config/cctv_sources.world-image-cameras.json` | Mixed: ODOT TripCheck public images (ODOT permits use with credit) and MLIT site content under terms compatible with CC BY 4.0. Frames are not bundled or persisted; the server holds a bounded in-memory cache. | Per-source terms apply; NZTA Journey Planner web-cache rows are excluded; Vegagerðin rows are served by the Iceland pack instead | Oregon Department of Transportation (Camera courtesy of ODOT) and Japan Ministry of Land, Infrastructure, Transport and Tourism (出典：国土交通省 川の防災情報) |
 | **TeleGeography Submarine Cable Map** (712 cables + 1,917 landing points)   | `telegeography_submarine_cables/` | **CC BY-NC-SA 3.0**                                                                                       | ❌ **NonCommercial — remove for commercial use** | "© TeleGeography — submarinecablemap.com"                                   |
 | **UCS Satellite Database** UCS-Satellite-Database 5-1-2023 (3,564 records; operator, owner country, purpose) | `ucs_satellites/` | **Free, unrestricted use** (UCS database manual, section 3) | ✅ (acknowledgement requested) | "UCS Satellite Database (UCS-Satellite-Database 5-1-2023), https://www.ucsusa.org/satellite_database" |
+| **Imaging sensor pack** (46 Earth-observation platforms: swath, resolution) | `imaging_sensors/` | Individual specification facts from operator and agency pages, cited per entry | ✅ (facts only) | "Imaging sensor swaths: operator and agency specifications" |
 | **Natural Earth physical regions** (1,046 land + 292 marine named polygons) | `natural_earth/`                  | **Public domain**                                                                                         | ✅ (no restrictions)                             | "Made with Natural Earth" (courtesy credit — not legally required)          |
 | **DataSF Analysis Neighborhoods** (41 SF neighborhood polygons)             | `neighborhoods/`                  | **PDDL 1.0** (public domain)                                                                              | ✅ (no restrictions)                             | "City & County of San Francisco — DataSF" (courtesy — not legally required) |
 | **Natural Earth countries, states and provinces** (260 admin-0/map units + 4,587 admin-1 polygons)             | `natural_earth/`                  | **Public domain**                                                                                         | ✅ (no restrictions)                             | "Made with Natural Earth" (courtesy credit — not legally required)          |
@@ -299,6 +300,10 @@ The former bundled 2026-05-25 snapshot was removed 2026-07-16.
 
 Operator, owner country and purpose for active satellites, keyed by NORAD number, from the Union of Concerned Scientists Satellite Database release **UCS-Satellite-Database 5-1-2023** (data current through 2023-05-01; https://www.ucsusa.org/satellite_database). The satellites layer joins it to CelesTrak positions and SATCAT records to file each satellite as a station, imaging, telecom, Starlink, probe or debris object, and to name its operator and owner. Section 3 of the UCS database manual: "The Database is free and its use is unrestricted. We request that its use be acknowledged and referenced in written materials. References should include the version of the Database that was used, which is indicated by the name of the Excel file, and a link to or URL for the webpage www.ucsusa.org/satellite_database." The app acknowledges it in the Data attribution popover. UCS has paused updates since this release; Starlink rows are dropped (Starlink is classed by name). Build: `scripts/build-ucs-satellites.py`; curation in the folder README.
 
+### Imaging sensor pack (`imaging_sensors/`)
+
+Swath widths and ground resolutions for 46 Earth-observation platforms (Landsat, Sentinel, MODIS, VIIRS, GOES, Himawari, Gaofen, CBERS, RADARSAT, TerraSAR-X, COSMO-SkyMed, ALOS, KOMPSAT, SPOT, Pléiades, WorldView, SkySat, PlanetScope, ICEYE, Capella, Umbra and others), compiled 2026-11-04 from the operator and agency pages cited per entry. The orbital view draws each satellite's sensor swath to scale and caps its zoom at that swath. Facts only; no text or images copied. A swath is confirmed on an operator, agency (ESA's eoPortal included) or academic page; resellers are not cited. The CEOS MIM Database (CC BY 4.0) is not yet used. Sources and unverified values: the folder README.
+
 ### Natural Earth physical regions (`natural_earth/`)
 
 Curated from the **Natural Earth 10m physical vectors** (https://www.naturalearthdata.com/ —