feat: add account selection support in web UI

Add support for multiple MyIce accounts in the web interface:

- Create /accounts endpoint to fetch available accounts from config files

- Update index.html to dynamically show available accounts

- Modify /schedule and /game endpoints to accept account parameter

- Store selected account in localStorage for persistence

myice/webapi.py

@@ -74,35 +74,86 @@ async def favico():
 @app.get("/schedule")
 async def schedule(
     headers: Annotated[AuthHeaders, Header()],
+    account: str = "default",
 ):
     if not headers.authorized():
         raise HTTPException(401, detail="get out")
-    username, password, userid, existing_token, club_id = myice.get_login()
+    username, password, userid, existing_token, club_id = myice.get_login(
+        config_section=account
+    )
     if existing_token:
         myice.userdata = {
             "id": userid,
-            "id_club": 186,
+            "id_club": club_id or 186,
             "token": existing_token,
         }
     else:
-        myice.userdata = myice.mobile_login()
+        myice.userdata = myice.mobile_login(config_section=account)
     return myice.refresh_data()["club_games"]
 
 
+@app.get("/accounts")
+async def accounts(
+    headers: Annotated[AuthHeaders, Header()],
+):
+    if not headers.authorized():
+        raise HTTPException(401, detail="get out")
+
+    # Import configparser to read the available sections
+    import configparser
+    from pathlib import Path
+
+    config = configparser.ConfigParser()
+    config_files = [
+        Path("~/.config/myice.ini").expanduser(),
+        Path("myice.ini"),
+    ]
+
+    # Read all config files
+    for config_file in config_files:
+        if config_file.exists():
+            try:
+                config.read(config_file, encoding="utf-8")
+            except Exception:
+                # Try without specifying encoding
+                config.read(config_file)
+
+    # Get all sections (accounts) from the config
+    accounts = []
+    for section in config.sections():
+        if section != "DEFAULT":  # Skip DEFAULT section
+            # Capitalize first letter for display
+            label = (
+                section[0].upper() + section[1:]
+                if len(section) > 1
+                else section.upper()
+            )
+            accounts.append({"name": section, "label": label})
+
+    # If no accounts found, return default
+    if not accounts:
+        accounts = [{"name": "default", "label": "Default"}]
+
+    return accounts
+
+
 @app.get("/game/{game_id}")
 async def game(
     headers: Annotated[AuthHeaders, Header()],
     game_id: int,
+    account: str = "default",
 ):
-    username, password, userid, existing_token, club_id = myice.get_login()
+    username, password, userid, existing_token, club_id = myice.get_login(
+        config_section=account
+    )
     if existing_token:
         myice.userdata = {
             "id": userid,
-            "id_club": 186,
+            "id_club": club_id or 186,
             "token": existing_token,
         }
     else:
-        myice.userdata = myice.mobile_login()
+        myice.userdata = myice.mobile_login(config_section=account)
 
     # data = refresh_data()
     with requests.post(