feat: implement phases 3-5 of Arma 3 UX enhancement plan

Phase 3 - Mod display names + split-pane selector:
- Parse mod.cpp/meta.cpp for display_name and workshop_id
- Rewrite ModList as two-pane available/selected interface

Phase 4 - Player kick/ban from Players tab:
- Add get_by_slot() to PlayerRepository
- Add get_rcon_client() class method to ThreadRegistry
- Add /players/{slot_id}/kick and /ban endpoints
- Rewrite PlayerTable with kick/ban modals and ban presets

Phase 5 - Historical log file browser:
- Add list_log_files() and get_log_file_path() to RPTParser
- Add logfiles_router with GET/download/DELETE endpoints
- Update LogViewer with collapsible log files section (download + delete)

backend/core/dal/player_repository.py

@@ -43,6 +43,12 @@ class PlayerRepository(BaseRepository):
             },
         )
 
+    def get_by_slot(self, server_id: int, slot_id: int) -> dict | None:
+        return self._fetchone(
+            "SELECT * FROM players WHERE server_id = :sid AND slot_id = :slot",
+            {"sid": server_id, "slot": str(slot_id)},
+        )
+
     def clear(self, server_id: int) -> None:
         self._execute("DELETE FROM players WHERE server_id = :sid", {"sid": server_id})
 

backend/core/servers/logfiles_router.py

@@ -0,0 +1,80 @@
+"""Log file endpoints — list, download, and delete historical RPT log files."""
+from __future__ import annotations
+
+import logging
+from typing import Annotated
+
+from fastapi import APIRouter, Depends, HTTPException
+from fastapi.responses import FileResponse
+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
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/servers/{server_id}/logfiles", tags=["logfiles"])
+
+
+def _ok(data):
+    return {"success": True, "data": data, "error": None}
+
+
+def _get_rpt_parser(server_id: int, db: Connection):
+    server = ServerRepository(db).get_by_id(server_id)
+    if server is None:
+        raise HTTPException(status_code=404, detail="Server not found")
+    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)
+
+
+@router.get("")
+def list_log_files(
+    server_id: int,
+    db: Annotated[Connection, Depends(get_db)],
+    _user: Annotated[dict, Depends(get_current_user)],
+) -> dict:
+    parser, server_dir = _get_rpt_parser(server_id, db)
+    files = parser.list_log_files(server_dir)
+    return _ok(files)
+
+
+@router.get("/{filename}/download")
+def download_log_file(
+    server_id: int,
+    filename: str,
+    db: Annotated[Connection, Depends(get_db)],
+    _user: Annotated[dict, Depends(get_current_user)],
+):
+    parser, server_dir = _get_rpt_parser(server_id, db)
+    path = parser.get_log_file_path(server_dir, filename)
+    if path is None:
+        raise HTTPException(status_code=404, detail="Log file not found")
+    return FileResponse(
+        path=str(path),
+        filename=filename,
+        media_type="text/plain",
+    )
+
+
+@router.delete("/{filename}")
+def delete_log_file(
+    server_id: int,
+    filename: str,
+    db: Annotated[Connection, Depends(get_db)],
+    _admin: Annotated[dict, Depends(require_admin)],
+) -> dict:
+    parser, server_dir = _get_rpt_parser(server_id, db)
+    path = parser.get_log_file_path(server_dir, filename)
+    if path is None:
+        raise HTTPException(status_code=404, detail="Log file not found")
+    try:
+        path.unlink()
+    except OSError as exc:
+        raise HTTPException(status_code=500, detail=f"Could not delete file: {exc}") from exc
+    return _ok({"message": f"{filename} deleted"})

backend/core/servers/players_router.py

@@ -5,18 +5,28 @@ import logging
 from typing import Annotated
 
 from fastapi import APIRouter, Depends
+from pydantic import BaseModel
 from sqlalchemy.engine import Connection
 
 from core.dal.player_repository import PlayerRepository
 from core.servers.service import ServerService
 from database import get_db
-from dependencies import get_current_user
+from dependencies import get_current_user, require_admin
 
 logger = logging.getLogger(__name__)
 
 router = APIRouter(prefix="/servers/{server_id}/players", tags=["players"])
 
 
+class KickRequest(BaseModel):
+    reason: str = "Kicked by admin"
+
+
+class BanFromPlayerRequest(BaseModel):
+    reason: str = "Banned by admin"
+    duration_minutes: int | None = None
+
+
 def _ok(data):
     return {"success": True, "data": data, "error": None}
 
@@ -54,4 +64,31 @@ def player_history(
     total, rows = player_repo.get_history(
         server_id=server_id, limit=limit, offset=offset, search=search,
     )
-    return _ok({"total": total, "items": rows})
+    return _ok({"total": total, "items": rows})
+
+
+@router.post("/{slot_id}/kick")
+def kick_player(
+    server_id: int,
+    slot_id: int,
+    body: KickRequest,
+    db: Annotated[Connection, Depends(get_db)],
+    _admin: Annotated[dict, Depends(require_admin)],
+) -> dict:
+    ServerService(db).kick_player(server_id, slot_id, body.reason)
+    return _ok({"message": f"Player {slot_id} kicked"})
+
+
+@router.post("/{slot_id}/ban")
+def ban_player_from_list(
+    server_id: int,
+    slot_id: int,
+    body: BanFromPlayerRequest,
+    db: Annotated[Connection, Depends(get_db)],
+    admin: Annotated[dict, Depends(require_admin)],
+) -> dict:
+    ban = ServerService(db).ban_from_player(
+        server_id, slot_id, body.reason, body.duration_minutes,
+        banned_by=admin["username"],
+    )
+    return _ok(ban)

backend/core/servers/service.py

@@ -396,6 +396,56 @@ class ServerService:
                     data[field] = "***"
         return sections
 
+    def kick_player(self, server_id: int, slot_id: int, reason: str) -> None:
+        from core.threads.thread_registry import ThreadRegistry
+        ra = ThreadRegistry.get_rcon_client(server_id)
+        if not ra or not ra.is_connected():
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail={"code": "RCON_NOT_CONNECTED", "message": "RCon not connected — server must be running"},
+            )
+        success = ra.kick_player(int(slot_id), reason)
+        if not success:
+            raise HTTPException(
+                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                detail={"code": "KICK_FAILED", "message": "Kick command failed"},
+            )
+
+    def ban_from_player(
+        self,
+        server_id: int,
+        slot_id: int,
+        reason: str,
+        duration_minutes: int | None,
+        banned_by: str,
+    ) -> dict:
+        from datetime import datetime, timezone, timedelta
+        from core.dal.player_repository import PlayerRepository
+        from core.dal.ban_repository import BanRepository
+        player = PlayerRepository(self._db).get_by_slot(server_id, slot_id)
+        if not player:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail={"code": "NOT_FOUND", "message": "Player not found"},
+            )
+        expires_at = None
+        if duration_minutes is not None and duration_minutes > 0:
+            expires_at = (datetime.now(timezone.utc) + timedelta(minutes=duration_minutes)).isoformat()
+        from core.threads.thread_registry import ThreadRegistry
+        ra = ThreadRegistry.get_rcon_client(server_id)
+        if ra and ra.is_connected():
+            ra.ban_player(player["guid"], duration_minutes or 0, reason)
+        ban_repo = BanRepository(self._db)
+        ban_id = ban_repo.create(
+            server_id=server_id,
+            guid=player["guid"],
+            name=player["name"],
+            reason=reason,
+            banned_by=banned_by,
+            expires_at=expires_at,
+        )
+        return dict(ban_repo.get_by_id(ban_id))
+
     def get_config_schema(self, server_id: int) -> dict:
         server = self.get_server(server_id)
         adapter = GameAdapterRegistry.get(server["game_type"])

backend/core/threads/thread_registry.py

@@ -90,6 +90,20 @@ class ThreadRegistry:
         if registry is not None:
             registry._stop_all()
 
+    @classmethod
+    def get_rcon_client(cls, server_id: int):
+        """Return the live Arma3RemoteAdmin client for a running server, or None."""
+        registry = cls._get_instance()
+        if registry is None:
+            return None
+        bundle = registry._bundles.get(server_id)
+        if bundle is None:
+            return None
+        poller = bundle.get("rcon_poller")
+        if poller is None or not poller.is_alive():
+            return None
+        return getattr(poller, "_client", None)
+
     # ── Instance methods ──
 
     def _start_server_threads(self, server_id: int, db) -> None: