fix: fix Arma 3 log discovery and improve config editor UX

- Fix logfiles_router and thread_registry to resolve .rpt log files
  from Path(server["exe_path"]).parent/server/ instead of the languard
  data dir, which never contained log files — log list and live tail
  both now work correctly
- Rewrite get_ui_schema() in config_generator to cover all ~80 fields
  across all 5 sections (server/basic/profile/launch/rcon) with proper
  toggle/select/number/password/tag-list/hidden widgets and labels;
  missions field is hidden (managed by Missions tab)
- Add formatSelectDisplay() to ConfigEditor so select fields show
  descriptive text (e.g. "0 - Never") instead of raw numbers in view mode
- Add ToggleDisplay for boolean fields (Enabled/Disabled with indicator dot)
- Add section tab labels and descriptions to ConfigEditor
- Add MissionList UX hints and dynamic Add/In Rotation button labels
- Add "hidden" to FieldSchema widget union type
- Update API.md, ARCHITECTURE.md, CLAUDE.md, FRONTEND.md, MODULES.md,
  THREADING.md to document log path fix and schema coverage

backend/core/servers/logfiles_router.py

@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 import logging
+from pathlib import Path
 from typing import Annotated
 
 from fastapi import APIRouter, Depends, HTTPException
@@ -10,7 +11,6 @@ from sqlalchemy.engine import Connection
 
 from adapters.registry import GameAdapterRegistry
 from core.dal.server_repository import ServerRepository
-from core.utils.file_utils import get_server_dir
 from database import get_db
 from dependencies import get_current_user, require_admin
 
@@ -30,7 +30,9 @@ def _get_rpt_parser(server_id: int, db: Connection):
     adapter = GameAdapterRegistry.get(server["game_type"])
     if not adapter.has_capability("log_parser"):
         raise HTTPException(status_code=404, detail="Server does not support log files")
-    return adapter.get_log_parser(), get_server_dir(server_id)
+    # RPT files live next to the server exe (e.g. A3Master/server/*.rpt)
+    exe_dir = Path(server["exe_path"]).parent
+    return adapter.get_log_parser(), exe_dir
 
 
 @router.get("")