feat(pipeline): WTSC transit schedule catalog (128th open format)

Novel replacement for the implicit taxi/zeppelin/boat scheduling
that vanilla WoW drove from a tangle of TaxiNodes.dbc +
TaxiPath.dbc + per-zeppelin GameObject scripts + hard-coded
transport interval timers in the server's MapManager. Each WTSC
entry binds one scheduled passenger route to its origin /
destination coords, vehicle type (Taxi/Zeppelin/Boat/Mount),
departure interval, in-flight duration, capacity, and faction-
access gate.

Initially designed with magic 'WTRN' but discovered collision
with existing trainers catalog (also WTRN) — renamed to 'WTSC'
(Transit SChedule) and updated all CLI flags.

Three presets:
  --gen-trn-zeppelins  3 vanilla Horde zeppelin routes
                       (OG<->UC 240s interval, OG<->Grom'Gol,
                       UC<->Grom'Gol)
  --gen-trn-boats      3 vanilla boat routes (Auberdine<->
                       Stormwind Alliance, Menethil<->Theramore
                       Alliance, BootyBay<->Ratchet Neutral
                       cross-faction)
  --gen-trn-taxis      3 taxi gryphon/wyvern routes — capacity=0
                       indicates solo gryphon ride

CRITICAL scheduling invariant validator catches: when capacity > 0
the departureInterval MUST be >= travelDuration. A zeppelin with
interval=60s + travel=90s with capacity=40 would overflow the
vehicle pool — next zeppelin departs before prior arrives. Solo
gryphon (capacity=0) is exempt because each ride is independent.

Validator also catches: id+name+origin+destination required,
vehicleType/factionAccess range, zero intervals/travel, duplicate
routeIds, duplicate route names. Warns on same-map routes
(originMapId == destinationMapId) — preset taxi route Crossroads
to Razor Hill triggered this warning in smoke-test (both in
Kalimdor mapId=1, intentional).

Format count 127 -> 128. CLI flag count 1346 -> 1353.

tools/editor/cli_format_table.cpp

@@ -130,6 +130,7 @@ constexpr FormatMagicEntry kFormats[] = {
     {{'W','M','O','D'}, ".wmod",  "addons",    "--info-wmod",      "Addon manifest catalog"},
     {{'W','S','P','K'}, ".wspk",  "spells",    "--info-wspk",      "Spell pack catalog"},
     {{'W','P','H','M'}, ".wphm",  "anim",      "--info-wphm",      "Player movement-to-animation map"},
+    {{'W','T','S','C'}, ".wtsc",  "transit",   "--info-wtsc",      "Transit schedule catalog"},
     {{'W','F','A','C'}, ".wfac",  "factions",  nullptr,            "Faction catalog"},
     {{'W','L','C','K'}, ".wlck",  "locks",     nullptr,            "Lock catalog"},
     {{'W','S','K','L'}, ".wskl",  "skills",    nullptr,            "Skill catalog"},