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_3_8.json

@@ -0,0 +1 @@
+{"chunk":[3,8],"origin":[-250,-500],"land":[[[88.5,8.0],[88.5,71.0],[82.5,85.0],[78.0,89.5],[74.0,90.5],[71.0,88.5],[56.0,87.5],[0.0,87.5],[0.0,39.7],[2.0,38.5],[5.0,41.5],[8.0,39.5],[12.0,40.5],[14.0,38.5],[17.0,40.5],[20.5,37.0],[20.5,32.0],[22.5,30.0],[20.0,27.5],[14.0,30.5],[11.0,27.5],[9.0,28.5],[7.0,26.5],[5.0,28.5],[2.0,27.5],[0.0,29.5],[0.0,0.0],[98.28,0.0],[88.5,8.0]],[[43.0,249.5],[40.0,246.5],[32.0,243.5],[28.5,240.0],[29.5,235.0],[36.0,227.5],[38.5,231.0],[34.5,237.0],[38.0,240.5],[44.0,242.5],[55.25,250.0],[44.5,250.0],[43.0,249.5]],[[153.5,238.0],[149.5,233.0],[149.5,230.0],[152.5,226.0],[146.0,220.5],[141.0,218.5],[140.0,219.5],[135.0,214.5],[129.0,211.5],[128.0,212.5],[124.0,208.5],[119.0,205.5],[116.0,205.5],[112.0,201.5],[104.0,197.5],[102.0,198.5],[94.0,191.5],[89.0,191.5],[79.0,183.5],[75.0,185.5],[69.0,177.5],[64.0,175.5],[63.0,176.5],[58.0,171.5],[52.0,168.5],[44.0,177.5],[41.5,173.0],[44.5,168.0],[49.0,163.5],[53.0,163.5],[67.0,171.5],[71.0,169.5],[73.5,172.0],[72.5,173.0],[79.0,178.5],[85.0,181.5],[87.0,180.5],[97.0,188.5],[100.0,187.5],[111.0,196.5],[115.0,194.5],[120.0,201.5],[124.0,203.5],[127.0,202.5],[133.0,208.5],[138.0,211.5],[141.0,210.5],[152.0,219.5],[162.0,206.5],[166.0,207.5],[169.5,204.0],[188.5,164.0],[183.5,158.0],[187.5,149.0],[181.0,143.5],[175.0,142.5],[166.0,135.5],[163.0,135.5],[159.0,131.5],[151.0,127.5],[148.0,128.5],[138.0,119.5],[132.0,120.5],[129.0,117.5],[115.0,117.5],[109.0,114.5],[105.0,114.5],[100.0,118.5],[96.5,116.0],[101.0,109.5],[131.0,112.5],[145.0,118.5],[187.0,142.5],[194.0,144.5],[198.0,147.5],[201.0,147.5],[211.5,159.0],[249.5,214.0],[248.5,220.0],[245.5,224.0],[245.5,228.0],[236.5,245.0],[234.46,250.0],[147.99,250.0],[153.5,238.0]]],"surfaces":[{"poly":[[2.5,65.0],[4.0,51.5],[14.0,63.5],[16.5,62.0],[6.5,52.0],[4.0,43.5],[0.0,43.5],[0.0,41.42],[1.0,41.5],[2.0,37.5],[5.0,41.5],[9.0,40.5],[17.5,47.0],[18.5,52.0],[25.5,58.0],[25.0,66.5],[2.5,65.0]],"kind":"urban"},{"poly":[[1.5,50.0],[0.0,65.5],[0.0,48.5],[1.5,50.0]],"kind":"urban"},{"poly":[[141.5,133.0],[147.5,125.0],[140.0,121.5],[138.5,120.0],[140.5,119.0],[136.0,115.5],[132.0,114.5],[132.0,117.5],[129.0,115.5],[129.0,117.5],[117.0,115.5],[113.0,121.5],[113.0,114.5],[103.0,113.5],[102.0,115.5],[101.0,113.5],[100.0,118.5],[96.5,116.0],[102.0,109.5],[121.5,112.0],[119.0,113.5],[129.0,112.5],[130.0,114.5],[131.0,113.5],[137.0,114.5],[154.5,125.0],[152.0,127.5],[148.0,126.5],[142.0,135.5],[141.5,133.0]],"kind":"urban"},{"poly":[[169.5,148.0],[175.5,141.0],[163.0,133.5],[156.0,142.5],[160.5,133.0],[152.5,128.0],[155.0,125.5],[167.0,131.5],[166.0,133.5],[169.0,132.5],[180.0,138.5],[181.0,141.5],[183.5,141.0],[181.0,143.5],[177.0,141.5],[170.0,150.5],[169.5,148.0]],"kind":"urban"},{"poly":[[153.5,249.0],[151.5,247.0],[155.5,245.0],[152.5,239.0],[158.0,238.5],[161.5,232.0],[161.5,229.0],[158.0,230.5],[155.0,225.5],[155.5,229.0],[150.0,232.5],[152.5,224.0],[141.0,217.5],[136.0,224.5],[138.5,218.0],[134.5,214.0],[136.0,211.5],[134.0,213.5],[130.0,210.5],[128.0,211.5],[125.0,217.5],[123.5,215.0],[126.5,210.0],[121.0,204.5],[115.0,204.5],[111.0,209.5],[113.5,205.0],[109.5,200.0],[111.0,198.5],[108.0,199.5],[91.0,189.5],[86.0,195.5],[84.5,193.0],[88.0,186.5],[86.0,187.5],[76.0,182.5],[73.0,187.5],[75.5,181.0],[66.0,176.5],[64.0,171.5],[64.5,174.0],[59.0,180.5],[61.5,173.0],[51.0,167.5],[47.5,169.0],[48.0,171.5],[44.5,172.0],[46.5,174.0],[44.0,177.5],[41.5,174.0],[43.5,174.0],[44.5,169.0],[49.0,163.5],[58.5,168.0],[54.0,166.5],[55.0,168.5],[61.0,168.5],[69.0,173.5],[80.0,157.5],[70.5,174.0],[72.0,175.5],[85.0,182.5],[89.0,178.5],[87.5,184.0],[99.0,190.5],[105.5,179.0],[108.0,178.5],[101.5,191.0],[112.0,197.5],[114.5,197.0],[121.0,184.5],[122.5,187.0],[115.5,199.0],[119.0,203.5],[124.0,203.5],[125.5,205.0],[122.5,205.0],[126.0,207.5],[130.0,198.5],[131.5,200.0],[128.5,206.0],[140.0,212.5],[149.0,199.5],[141.5,214.0],[154.0,219.5],[162.0,206.5],[173.5,206.0],[175.5,201.0],[171.5,199.0],[177.5,197.0],[174.5,193.0],[180.0,191.5],[183.5,185.0],[179.5,182.0],[185.5,181.0],[188.5,174.0],[186.5,171.0],[190.0,170.5],[188.5,168.0],[192.5,165.0],[189.5,161.0],[195.0,159.5],[197.5,154.0],[204.0,150.5],[206.5,154.0],[203.5,157.0],[206.5,158.0],[208.0,162.5],[212.5,162.0],[209.5,165.0],[212.0,168.5],[216.5,168.0],[213.5,171.0],[218.5,171.0],[215.5,174.0],[217.5,177.0],[226.0,188.5],[230.5,188.0],[227.5,191.0],[233.5,192.0],[230.5,195.0],[231.5,197.0],[236.0,202.5],[241.5,202.0],[242.5,205.0],[239.5,208.0],[243.5,210.0],[244.0,213.5],[249.0,213.5],[249.5,217.0],[243.5,218.0],[244.5,220.0],[241.5,223.0],[243.5,225.0],[240.5,226.0],[243.5,229.0],[239.0,229.5],[235.5,237.0],[238.5,242.0],[232.5,243.0],[233.5,247.0],[230.5,248.0],[229.5,250.0],[195.6,250.0],[215.5,209.0],[212.0,204.5],[202.0,200.5],[177.07,250.0],[153.0,250.0],[153.5,249.0]],"kind":"urban"},{"poly":[[31.0,241.5],[31.0,238.5],[28.5,240.0],[35.0,227.5],[39.5,228.0],[33.5,237.0],[36.0,240.5],[43.0,243.5],[48.5,238.0],[45.5,245.0],[42.0,244.5],[42.0,246.5],[31.0,2Line truncated