Add live bidding UI and backend support; integrate react-bootstrap

- Added 'react-bootstrap' to frontend dependencies for improved UI components.
- Updated bid placement mechanics: backend now stores bids as a list of {user, amount}; frontend displays live bid leaderboard, including highest bid.
- Implemented bid placement form and UI in participant draft screen.
- Used React-Bootstrap Collapse for nominee menu accordion behavior.
- Expanded DraftStateManager and websocket consumers to broadcast bid updates in the new format.
- Added missing 'bids' syncing to all relevant state handling code.
- Improved styling for bidding, panel headers, and pick lists in SCSS; leveraged Bootstrap variables/utilities more extensively.
- Other minor JS, Python, and style tweaks for better stability and robustness.

draft/state.py

@@ -181,13 +181,15 @@ class DraftStateManager:
         self.cache.set(self.cache_keys.current_movie, movie_id)
         self.cache.delete(self.cache_keys.bids)
 
-    def place_bid(self, user_id: int, amount: int):
+    def place_bid(self, user: User, amount: int|str):
+        if isinstance(amount, str):
+            amount = int(amount)
         bids = self.get_bids()
-        bids[user_id] = amount
+        bids.append({"user":user.username, "amount":amount})
         self.cache.set(self.cache_keys.bids, json.dumps(bids))
 
     def get_bids(self) -> dict:
-        return json.loads(self.cache.get(self.cache_keys.bids) or "{}")
+        return json.loads(self.cache.get(self.cache_keys.bids) or "[]")
 
     def current_movie(self) -> Movie | None:
         movie_id = self.cache.get(self.cache_keys.current_movie)
@@ -216,7 +218,7 @@ class DraftStateManager:
             "draft_index": self.draft_index,
             "connected_participants": self.connected_participants,
             "current_movie": self.cache.get(self.cache_keys.current_movie),
-            # "bids": self.get_bids(),
+            "bids": self.get_bids(),
             "bidding_timer_end": self.get_timer_end(),
             "bidding_timer_start": self.get_timer_start(),
             "current_pick": picks[0] if picks else None,