feat(extract): Chunk-Ausgabe, Manifest und Ablaufsteuerung

Task 6: leonida/emit.py (chunk_box, split_by_chunk, chunk_payload und die
Chunk-lokalen three.js-Koordinaten, write_chunks, write_debug_png) sowie
run.py als Ablaufsteuerung, die alles aus den Tasks 3-5 zu 144 Chunk-Dateien
und einem Manifest unter public/data/vice-a/ zusammenfuehrt.

Zwei Abweichungen vom Referenzcode der Aufgabe, beide durch Gegenrechnen
gegen die dort genannten Realwerte gefunden:

- test_emit.py::test_coordinates_are_chunk_local_three_js gab im Original
  das ungeschnittene BIG (spannt vier Chunks) direkt an chunk_payload();
  chunk_payload() clippt selbst nicht (das tut in run.py split_by_chunk_all
  vorher), darum lag der Rand bei x=300 statt <=250 und der Test schlug mit
  dem gegebenen Code fehl. Fix: BIG vor dem Aufruf mit split_by_chunk auf
  Chunk (0,0) zuschneiden, wie es run.py fuer "land" ohnehin tut.

- run.pys Filter "Gebaeude, die zu >50% in einem Strassenpolygon liegen,
  gelten als Strasse" pruefte im Original ALLE rohen Gebaeude gegen
  road_polygons(labels) direkt. road_polygons() zaehlt "spekulativ" selbst
  zu den Strassenklassen (ROAD_CLASSES) und schliesst zusaetzlich mit
  disk(3) gegen Strassennamen; ein isoliertes "spekulativ"-Gebaeude
  ueberlappt sich darueber praktisch mit sich selbst. Ergebnis am realen
  Mosaik: von 267 rohen spekulativen Gebaeuden ueberlebten nur 3 (statt der
  in der Aufgabe genannten Groessenordnung von 258), und die Schliessung
  riss zusaetzlich 211 gewoehnliche graue Gebaeude mit heraus, die die
  Notiz aus Task 5 ausdruecklich nicht meinte ("die ROTEN Flaechen ...
  werden abgezogen"). Fix: eigenes, unzweideutiges Strassenmass nur aus
  "strasse"/"weg" (ohne "spekulativ", ohne Namens-Schliessung), Pruefung
  nur auf spekulative Kandidaten begrenzt. Ergebnis: 2.348 Gebaeude, davon
  263 spekulativ (Aufgabe: 2.352 bzw. 258) - Wahrzeichenhoehen (68 Stueck,
  31-248 m) und Palmenzahl (2.133) treffen die genannten Referenzwerte exakt.

Pipeline-Lauf am gecachten Mosaik: 144 Chunk-Dateien + Manifest, 2,5 MB
gesamt (Budget 10 MB), groesste Datei chunk_9_1.json/chunk_10_1.json mit
je 40 KB. Alle drei Toleranzgrenzen (wasser/strasse/gebaeude) eingehalten.
Debug-PNGs stichprobenartig gesichtet: Kuestenlinie, Strassennetz
(inklusive Kreuzungen und einer Auffahrt-Rampe) und ein Strand mit
Palmenreihe liegen deckungsgleich auf dem Mosaik; der wasserreine Chunk
(4,10) zeigt korrekt keine Vektoren.

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

public/data/vice-a/chunk_4_1.json

@@ -0,0 +1 @@
+{"chunk":[4,1],"origin":[0,-2250],"land":[[[131.5,33.0],[97.5,69.0],[59.5,116.0],[49.5,130.0],[40.5,148.0],[25.5,171.0],[19.5,183.0],[16.5,196.0],[20.0,199.5],[23.0,199.5],[32.0,204.5],[48.0,202.5],[53.0,205.5],[65.0,208.5],[124.0,231.5],[141.0,236.5],[159.0,244.5],[250.0,245.8],[250.0,250.0],[0.0,250.0],[0.0,0.0],[160.91,0.0],[131.5,33.0]]],"surfaces":[{"poly":[[157.0,249.5],[158.0,246.5],[159.0,249.5],[176.0,249.5],[178.0,245.5],[219.0,245.5],[219.5,250.0],[154.5,250.0],[157.0,249.5]],"kind":"sand"},{"poly":[[223.0,245.5],[223.9,250.0],[222.25,250.0],[223.0,245.5]],"kind":"sand"},{"poly":[[249.0,246.5],[250.0,246.5],[250.0,250.0],[247.6,250.0],[249.0,246.5]],"kind":"sand"},{"poly":[[1.5,193.0],[1.5,25.0],[4.5,27.0],[3.5,29.0],[8.5,38.0],[14.0,57.5],[75.5,37.0],[61.42,0.0],[150.0,0.0],[148.5,3.0],[145.0,3.5],[117.5,36.0],[111.5,40.0],[100.5,56.0],[91.5,63.0],[71.5,90.0],[64.5,96.0],[52.5,115.0],[48.5,116.0],[11.5,181.0],[8.5,194.0],[20.0,200.5],[1.5,193.0]],"kind":"urban"},{"poly":[[1.5,243.0],[2.0,209.5],[19.5,217.0],[4.5,213.0],[2.5,241.0],[8.0,238.5],[11.0,243.5],[28.0,247.5],[1.5,243.0]],"kind":"urban"}],"roads":[{"poly":[[5.0,195.5],[8.0,194.5],[9.5,192.0],[11.5,181.0],[16.5,172.0],[16.5,170.0],[19.5,168.0],[24.5,156.0],[26.5,155.0],[29.5,148.0],[35.5,140.0],[37.5,134.0],[40.5,131.0],[43.5,124.0],[47.5,121.0],[48.5,119.0],[47.5,118.0],[52.5,114.0],[55.5,108.0],[58.5,106.0],[64.5,96.0],[71.5,90.0],[72.5,87.0],[86.5,71.0],[91.5,63.0],[108.5,46.0],[111.5,40.0],[127.5,25.0],[128.5,22.0],[133.5,16.0],[148.5,2.0],[149.7,0.0],[157.5,0.0],[154.5,3.0],[151.5,8.0],[142.5,16.0],[136.5,25.0],[127.5,32.0],[122.5,40.0],[106.5,56.0],[103.5,61.0],[89.5,76.0],[81.5,88.0],[67.5,104.0],[60.5,114.0],[56.5,117.0],[55.5,120.0],[51.5,124.0],[44.5,135.0],[42.5,140.0],[39.5,142.0],[37.5,148.0],[23.5,172.0],[21.5,178.0],[17.5,184.0],[17.5,190.0],[14.5,197.0],[17.0,200.5],[52.0,214.5],[54.0,216.5],[72.0,224.5],[87.0,233.5],[91.0,234.5],[106.0,243.5],[116.0,247.5],[120.64,250.0],[89.25,250.0],[89.0,249.5],[85.0,248.5],[82.0,245.5],[47.0,227.5],[44.0,227.5],[40.0,224.5],[37.0,224.5],[17.0,214.5],[14.0,213.5],[11.5,215.0],[10.5,217.0],[10.5,226.0],[9.5,227.0],[10.5,229.0],[8.0,232.5],[3.5,228.0],[3.5,220.0],[4.5,219.0],[3.5,216.0],[5.5,213.0],[4.5,210.0],[0.0,208.07],[0.0,193.36],[5.0,195.5]],"bridge":false},{"poly":[[28.0,248.5],[31.0,250.0],[0.0,250.0],[0.0,243.56],[28.0,248.5]],"bridge":false},{"poly":[[1.5,16.0],[2.0,22.5],[0.0,17.3],[0.0,12.4],[1.5,16.0]],"bridge":false},{"poly":[[71.5,37.0],[72.5,34.0],[70.5,30.0],[71.0,27.5],[74.5,38.0],[68.0,40.5],[64.5,40.0],[71.5,37.0]],"bridge":false},{"poly":[[248.0,249.5],[247.75,250.0],[240.94,250.0],[240.5,246.0],[249.0,245.5],[250.0,246.17],[250.0,248.83],[248.0,249.5]],"bridge":false}],"centerlines":[[[8.0,231.0],[7.0,217.0],[11.0,208.0]],[[13.0,208.0],[22.0,209.0],[54.0,223.0],[125.0,260.0],[137.0,281.0]],[[-16.0,199.0],[7.0,202.0]],[[8.0,201.0],[11.0,198.0],[14.0,184.0],[20.0,171.0],[51.0,119.0],[94.0,65.0],[203.0,-54.0],[337.0,-222.0],[349.0,-239.0],[349.0,-242.0],[354.0,-248.0],[359.0,-250.0]],[[16.0,55.0],[45.0,47.0]],[[50.0,45.0],[73.0,37.0],[65.0,12.0]],[[7.0,-3.0],[-4.0,2.0],[4.0,25.0]]],"buildings":[{"poly":[[1.0,193.5],[-1.0,193.5],[-2.5,192.0],[-2.0,11.5],[-1.5,14.0],[-0.5,15.0],[-0.5,17.0],[1.0,17.5],[1.5,16.0],[-0.5,13.0],[-1.5,7.0],[-3.5,5.0],[-3.5,3.0],[-4.5,2.0],[-3.0,0.5],[0.5,0.0],[0.0,-1.5],[-2.0,-0.5],[-2.5,-1.0],[-2.5,-87.0],[-3.5,-89.0],[-3.0,-89.5],[-2.0,-88.5],[1.0,-92.5],[1.5,-3.0],[2.5,-2.0],[1.5,-1.0],[2.0,-0.5],[3.0,-1.5],[7.0,-2.5],[7.0,-4.5],[9.0,-3.5],[10.0,-5.5],[11.5,-5.0],[10.5,-4.0],[11.0,-3.5],[13.5,-5.0],[12.5,-6.0],[13.0,-6.5],[17.0,-5.5],[19.0,-8.5],[23.0,-7.5],[24.0,-8.5],[26.0,-8.5],[27.0,-9.5],[35.0,-11.5],[37.0,-14.5],[38.0,-12.5],[39.0,-13.5],[41.0,-13.5],[42.0,-14.5],[44.0,-14.5],[48.0,-16.5],[54.0,-17.5],[54.5,-15.0],[55.5,-14.0],[55.5,-12.0],[57.5,-10.0],[56.5,-9.0],[59.5,-7.0],[59.5,-5.0],[60.5,-4.0],[59.5,-3.0],[59.5,0.0],[60.5,2.0],[63.5,4.0],[61.5,5.0],[64.5,7.0],[63.5,8.0],[63.5,10.0],[64.0,10.5],[65.0,9.5],[66.5,12.0],[66.0,13.5],[65.0,12.5],[64.5,13.0],[65.5,14.0],[67.5,22.0],[69.5,23.0],[69.5,27.0],[70.5,28.0],[70.5,30.0],[71.5,31.0],[71.5,33.0],[73.5,37.0],[71.0,37.5],[70.0,38.5],[68.0,38.5],[67.0,39.5],[65.0,39.5],[64.0,40.5],[62.0,40.5],[61.0,42.5],[59.0,41.5],[55.0,43.5],[52.0,43.5],[47.0,47.5],[46.0,46.5],[43.0,46.5],[42.0,47.5],[40.0,47.5],[39.0,48.5],[37.0,48.5],[36.0,49.5],[34.0,49.5],[30.0,51.5],[27.0,51.5],[26.0,52.5],[18.0,54.5],[16.0,57.5],[14.0,57.5],[13.5,57.0],[14.5,56.0],[14.5,53.0],[13.5,52.0],[13.5,50.0],[11.5,47.0],[10.5,42.0],[8.5,40.0],[8.5,37.0],[7.5,36.0],[6.5,31.0],[3.5,29.0],[4.5,27.0],[2.5,26.0],[4.5,25.0],[2.5,22.0],[2.5,20.0],[1.0,18.5],[0.5,19.0],[2.5,23.0],[1.5,25.0],[1.0,193.5]],"height":53.3,"source":"skyline","speculative":false},{"poly":[[82.0,88.5],[81.5,87.0],[87.5,80.0],[89.5,76.0],[103.5,61.0],[103.5,60.0],[106.5,57.0],[106.5,56.0],[109.0,53.5],[110.0,53.5],[114.0,48.5],[115.5,48.0],[116.Line truncated