Tembuku - Feeder Tap Designer QGIS 4 compatibility

Tembuku turns the first stage of FTTH/GPON feeder design into a one-folder task in QGIS. Point it at a folder of map data (cable inventory, feeder design compilation, the FDT points to design, POP list) as KMZ/KML, ZIP, GeoJSON, CSV/Excel or Shapefile/GeoPackage: Tembuku recognises each file from what is inside it, not from its name, says why, lists and corrects small typing mistakes in folder names, FDT codes and coordinates, and stops with a clear message when a required file is missing or unsafe. For every FDT it (1) checks the free tubes of nearby feeders and whether each feeder really runs toward the FDT, (2) picks the tap point and draws the new cable along existing poles and roads (OpenStreetMap, cached), (3) checks the GPON optical budget with the maximum values of current ITU-T standards and (4) decides between reusing a feeder and building a new one from the POP, with the reason written out. Results: KMZ files in the compilation folder layout with automatic F/T numbering, styled QGIS layers, an interactive offline HTML report, a CSV summary and an accuracy test against designs already approved (17 of 17 decisions matched on the Bitung and Tomohon designs used to calibrate the rules). Click an FDT on the map for an answer in about a second, or choose another candidate in the results panel. Basemaps show only current imagery with a known date: OpenStreetMap, detailed satellite imagery with the capture date at the map centre and an age warning, and the newest cloud-free Copernicus Sentinel-2 mosaic for the whole of Indonesia. Every value can be changed and names its source; no company names are built in (optional company labels stay in a local file). Large KMZ files are indexed once per work area and read safely (no extraction, size limits, no DTD). No extra Python packages. Interface in English; reports in Indonesian. Licence GPL v3 or later with section 7 terms (author attribution kept, modified versions renamed and marked, no right to the Tembuku name or logo); official releases are digitally signed by the author (release key fingerprint 92C4-D078-D1FC-1C5B, the same as Seranta and Seuntai; any other key is not an official Tembuku release).