feat(editor): add --rename-by-magic extension recovery flag

Reads the 4-byte magic of a file, looks it up in the shared
format table, and renames the file to use the correct .w*
extension. Useful when files have lost their extensions
(downloaded as 'data.bin', extracted from a tarball with
mangled metadata, or copied via a tool that strips suffixes).

Safe by default — refuses to overwrite an existing target;
pass --force to allow overwrite. --dry-run prints the planned
move without touching the filesystem. Files that already have
the correct extension are a no-op. Unrecognized magic exits
1 with the bytes printed for diagnostic context.

Reuses cli_format_table.cpp so any future format addition is
picked up automatically.

tools/editor/cli_dispatch.cpp

@@ -78,6 +78,7 @@
 #include "cli_animations_catalog.hpp"
 #include "cli_spell_visuals_catalog.hpp"
 #include "cli_summary_dir.hpp"
+#include "cli_rename_magic.hpp"
 #include "cli_quest_objective.hpp"
 #include "cli_quest_reward.hpp"
 #include "cli_clone.hpp"
@@ -197,6 +198,7 @@ constexpr DispatchFn kDispatchTable[] = {
     handleAnimationsCatalog,
     handleSpellVisualsCatalog,
     handleSummaryDir,
+    handleRenameMagic,
     handleQuestObjective,
     handleQuestReward,
     handleClone,