feat(editor): add --summary-dir bulk content inventory

Recursively walks a directory, identifies every file by 4-byte
magic, and reports per-format file count, total entries, and
bytes. Useful for content audits ("how many cinematics did
this asset bundle ship?") and for tracking migration progress
("what fraction of zones still lack a holiday catalog?").

Also extracts the format-magic table out of cli_info_magic.cpp
into a shared cli_format_table.{hpp,cpp} so --info-magic and
--summary-dir reuse the same source of truth — adding a new
format now updates one row in one file instead of two. Both
flags use the standard catalog header (magic + version + name
+ entryCount) for catalog formats; asset/world formats are
counted but report 0 entries since their headers differ.

Supports --json variant for tooling integration.

tools/editor/cli_format_table.cpp

@@ -0,0 +1,78 @@
+#include "cli_format_table.hpp"
+
+#include <cstring>
+
+namespace wowee {
+namespace editor {
+namespace cli {
+
+namespace {
+
+constexpr FormatMagicEntry kFormats[] = {
+    {{'W','O','M',' '}, ".wom",   "asset",     nullptr,            "M2 model"},
+    {{'W','O','B',' '}, ".wob",   "asset",     nullptr,            "WMO building"},
+    {{'W','H','M',' '}, ".whm",   "world",     nullptr,            "ADT heightmap"},
+    {{'W','O','T',' '}, ".wot",   "world",     nullptr,            "ADT textures"},
+    {{'W','O','W',' '}, ".wow",   "world",     nullptr,            "Per-zone world manifest"},
+    {{'W','I','T','M'}, ".wit",   "items",     "--info-witm",      "Item catalog"},
+    {{'W','C','R','T'}, ".wcrt",  "creatures", "--info-creatures", "Creature catalog"},
+    {{'W','S','P','N'}, ".wspn",  "spawns",    "--info-spawns",    "Spawn catalog"},
+    {{'W','L','O','T'}, ".wlot",  "loot",      "--info-loot",      "Loot tables"},
+    {{'W','G','O','T'}, ".wgot",  "objects",   "--info-objects",   "GameObject catalog"},
+    {{'W','S','N','D'}, ".wsnd",  "audio",     "--info-sound",     "Sound entries"},
+    {{'W','S','P','L'}, ".wspl",  "spells",    "--info-wspl",      "Spell catalog"},
+    {{'W','Q','T','M'}, ".wqt",   "quests",    "--info-quests",    "Quest catalog"},
+    {{'W','M','S','X'}, ".wms",   "maps",      "--info-wms",       "Map / area catalog"},
+    {{'W','C','H','C'}, ".wchc",  "chars",     "--info-wchc",      "Class + race catalog"},
+    {{'W','A','C','H'}, ".wach",  "achieve",   "--info-wach",      "Achievement catalog"},
+    {{'W','T','R','N'}, ".wtrr",  "trainers",  "--info-wtrr",      "Trainer catalog"},
+    {{'W','G','S','P'}, ".wgoss", "gossip",    "--info-wgoss",     "Gossip menu catalog"},
+    {{'W','T','A','X'}, ".wtax",  "taxi",      "--info-wtax",      "Taxi node catalog"},
+    {{'W','T','A','L'}, ".wtal",  "talents",   "--info-wtal",      "Talent catalog"},
+    {{'W','T','K','N'}, ".wtkn",  "tokens",    "--info-wtkn",      "Token catalog"},
+    {{'W','T','R','G'}, ".wtrg",  "triggers",  "--info-wtrg",      "Trigger catalog"},
+    {{'W','T','I','T'}, ".wttl",  "titles",    "--info-wttl",      "Title catalog"},
+    {{'W','S','E','A'}, ".wevt",  "events",    "--info-wevt",      "Event catalog"},
+    {{'W','M','O','U'}, ".wmnt",  "mounts",    "--info-wmnt",      "Mount catalog"},
+    {{'W','B','G','D'}, ".wbgd",  "battle",    "--info-wbgd",      "Battleground catalog"},
+    {{'W','M','A','L'}, ".wmal",  "mail",      "--info-wmal",      "Mail catalog"},
+    {{'W','G','E','M'}, ".wgem",  "gems",      "--info-wgem",      "Gem catalog"},
+    {{'W','G','L','D'}, ".wgld",  "guilds",    "--info-wgld",      "Guild catalog"},
+    {{'W','P','C','D'}, ".wcnd",  "cond",      "--info-wcnd",      "Condition catalog"},
+    {{'W','P','E','T'}, ".wpet",  "pets",      "--info-wpet",      "Pet catalog"},
+    {{'W','A','U','C'}, ".wauc",  "auction",   "--info-wauc",      "Auction catalog"},
+    {{'W','C','H','N'}, ".wchn",  "channels",  "--info-wchn",      "Channel catalog"},
+    {{'W','C','M','S'}, ".wcms",  "cinematic", "--info-wcms",      "Cinematic catalog"},
+    {{'W','G','L','Y'}, ".wgly",  "glyphs",    "--info-wgly",      "Glyph catalog"},
+    {{'W','V','H','C'}, ".wvhc",  "vehicles",  "--info-wvhc",      "Vehicle catalog"},
+    {{'W','H','O','L'}, ".whol",  "holiday",   "--info-whol",      "Holiday catalog"},
+    {{'W','L','I','Q'}, ".wliq",  "liquids",   "--info-wliq",      "Liquid catalog"},
+    {{'W','A','N','I'}, ".wani",  "anim",      "--info-wani",      "Animation catalog"},
+    {{'W','S','V','K'}, ".wsvk",  "spellfx",   "--info-wsvk",      "Spell visual kit 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"},
+    {{'W','O','L','A'}, ".wola",  "light",     nullptr,            "Outdoor light catalog"},
+    {{'W','O','W','A'}, ".wowa",  "weather",   nullptr,            "Weather schedule catalog"},
+    {{'W','M','P','X'}, ".wmpx",  "worldmap",  nullptr,            "World map catalog"},
+};
+
+constexpr size_t kFormatsCount =
+    sizeof(kFormats) / sizeof(kFormats[0]);
+
+} // namespace
+
+const FormatMagicEntry* findFormatByMagic(const char magic[4]) {
+    for (const auto& row : kFormats) {
+        if (std::memcmp(row.magic, magic, 4) == 0) return &row;
+    }
+    return nullptr;
+}
+
+const FormatMagicEntry* formatTableBegin() { return kFormats; }
+const FormatMagicEntry* formatTableEnd() { return kFormats + kFormatsCount; }
+size_t formatTableSize() { return kFormatsCount; }
+
+} // namespace cli
+} // namespace editor
+} // namespace wowee