Characters: Laden in the Esc menu, timed autosave

- Esc menu: "Exportieren" became "Laden"; it opens the load window, always
  in load mode. In a game every world loads (the current one reloads); a
  "(neu)" world stops the game (cCommand_armaStop) and starts the new one
  without the main menu. The character being played cannot be deleted.
- Silent autosave every sacredK.ini [characters] AutosaveMinutes (default
  10, 0 = off) into the character's autosave file.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

docs/characters.md

@@ -261,21 +261,34 @@ game the character's.
 number). Story autosaves (engine event 0xf subtype 2 with the flag at +0x18,
 noted in `cEngine::ReceiveEvent`) go into the autosave file.
 
+Silent autosave: 10 minutes after the last save of any kind (or the game's
+start), `SaveOnTick` does the direct save marked as an autosave, so it goes
+into the autosave file. While a window is open or a save runs it waits for
+the next tick. A character never saved yet gets its character file from it.
+Interval: `sacredK.ini` `[characters] AutosaveMinutes` (default 10, 0 off).
+
 Direct save (K key, Esc menu "Speichern"): on the next engine tick, as the
 quicksave does (0x618ebb): `cUI_Manager::CanOpenWindow` (0x75a690),
 `cEngine::CaptureScreen` (0x613710, 1), description +0x6a, row +0x68 = 0,
 flag +0x54 |= 0x40. The Esc menu line keeps its action (Show
 `UI_WND_SAVEGAME`); `cUI_Manager::ReceiveEvent` (0x757120) turns that into the
 direct save while a game runs. Its text is patched at 0x6bc1f7 (id 0x41b is
-used by other windows too). Loading is from the main menu only.
+used by other windows too).
 
-The Esc menu has no "Exportieren" (request 2026-10-20): `cUI_EscMenu::BuildLines`
-(0x6bb870, called by the constructor and on an event) makes five
-cUI_StaticText64 lines in the vector +0x158, 0x24 apart; each handles its own
-events. After it the UI_ESC_EXPORT line is removed and deleted, the lines
-below move up, and the window (0x108 x 0xc8) loses 0x24 of height, staying
-centred. With it the export screen (cUI_Character mode 5) is unreachable;
-its mod (charexport.cpp, an erase button for export slots) was deleted.
+The Esc menu: "Exportieren" became "Laden" (requests 2026-10-20). The line
+(text id 0x419 pushed at 0x6bc272, now "Laden") keeps its command, which shows
+UI_CHARACTER (the export screen) and hides the menu; in a game
+`UiManager_ReceiveEvent` turns that into showing the load window. The load
+window always opens in load mode (`cUI_Savegame::Show` vf24 0x71cfb0 picks
+save mode in a game; `SetMode` 0x71c4f0 (2) after it). In a game every
+world can be loaded, the current one too (a reload from its last save; the
+game's in-game load, engine flag 0x200). A "(neu)" world needs a new engine:
+the running game stops as "Beenden" stops it (`cCommand_armaStop`, execute
+0x755b30, vtable 0x88ee2c: posts 0x8001 to the main window, whose handler
+deletes the engine), and when the engine is gone (`OnGameEnd`) the new game's
+start command follows (0x8002), without the main menu. The character being
+played cannot be deleted. The export screen (cUI_Character
+mode 5) is unreachable; its mod (charexport.cpp, an erase button for export slots) was deleted.
 
 ### Migration
 
@@ -286,6 +299,5 @@ kept, the newest file overall is the shared hero.
 
 ## Open
 
-- Silent autosave every 10 minutes.
 - Quickload (row 0) does not know characters.
 - Multiplayer (see `todo.md`).