Add headless parallel eu7v2 scenario bake with streaming and PLCE placements

Enable --eu7v2-bake from the main binary: parallel module pool, bounded-RAM
spool flush, streaming terrain triangles, flat include/model parsing, and
eu7v2 emit/load with optional verify. Large placement .scm files emit lean
PLCE records and bake referenced .inc modules separately for reuse.

- CLI: --eu7v2-bake, --eu7v2-verify, --eu7v2-mem-limit-gb, --eu7v2-threads,
  --eu7v2-max-parse; wire max_threads through to the bake parser
- eu7v2 v2 records: PLCE placements, runtime emitter/loader, batch verify
- Parallel bake pool with session cache; drop heavy-serial parse gate in spool
  mode; parse concurrency matches thread count
- Streaming terrain: batched parallel parse+bake, scan/bake pipeline, shape
  spool with persistent buffered I/O and flush-before-read
- Parallel flat-file streaming for models/includes; pack/model spool for
  low-memory incremental flush
- Optional 50 GB private-bytes guard during headless bake

Braniewo_szeroki: 160 modules, verify PASS, ~34s bake (nmt100 ~17s vs ~190s
serial baseline).

Co-authored-by: Cursor <cursoragent@cursor.com>

utilities/Globals.h

@@ -86,6 +86,8 @@ struct global_settings {
     int eu7_pack_mesh_loader_workers{ 0 }; // 0 = main-thread only (background mesh threads unsafe with Global)
     bool eu7_auto_bake{ true }; // przy ladowaniu mapy: bake SCM→EU7 gdy brak lub nieaktualny .eu7
     int eu7_bake_threads{ 0 }; // watki bake (0 = auto = hardware_concurrency)
+    int eu7_bake_cpu_percent{ 80 }; // bake: docelowy % rdzeni logicznych, gdy eu7_bake_threads=0 (auto)
+    bool eu7v2_runtime{ false }; // eksperyment: transkoduj/laduj moduly przez chudy format eu7v2 (.eu7.v2)
     // logs
 	bool priorityLoadText3D{false}; // ladowanie T3D priorytetowo
     int iWriteLogEnabled{ 3 }; // maska bitowa: 1-zapis do pliku, 2-okienko, 4-nazwy torów