fix: repair invite links, social features, messaging + Discord UI overhaul

Phase 1 - Feature Repair:
- Fix member kick/leave: add missing db.delete() call in servers.ts
- Stabilize invite codes: return existing code instead of regenerating
- Fix user search: use LIKE instead of exact match in social.ts
- Wire DM button on FriendsPage to create/navigate to DM channels
- Add cancel outgoing friend request (DELETE endpoint + frontend)
- Add accept/decline friend request actions with WS real-time events
- Fix replyToId persistence in message creation
- Hydrate reactions and replyTo in message queries
- Add joinByCode to API client and serverStore
- Add friend_request_received/accepted WebSocket events

Phase 2 - Discord UI Overhaul:
- Remove stray borders between layout columns
- Replace shadow-sm with shadow-header on content headers
- Replace all bg-gray-*/text-gray-* with Discord color tokens
- Ensure flat color contrast (#1E1F22, #2B2D31, #313338)

Testing:
- Set up vitest + @testing-library/react + jsdom
- Add 17 tests across InviteModal, JoinServer, FriendsPage (all passing)
- Fix vite resolve.extensions to prefer .tsx over stale .js files

deploy.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# Configuration
+PI_IP="192.168.1.10"
+PI_USER="youruser"
+REMOTE_PATH="~/opencord"
+
+# 0. Ensure remote directory exists
+echo "📁 Preparing remote directory on Pi..."
+ssh "$PI_USER@$PI_IP" "mkdir -p $REMOTE_PATH"
+
+# 1. Sync files via rsync
+echo "🚀 Syncing files to Pi..."
+rsync -avz --delete \
+  --exclude='node_modules' \
+  --exclude='.git' \
+  --exclude='.env.local' \
+  --exclude='packages/*/node_modules' \
+  --exclude='packages/web/dist' \
+  --exclude='data' \
+  --exclude='.DS_Store' \
+  ./ "$PI_USER@$PI_IP:$REMOTE_PATH"
+
+# 2. Trigger Docker Compose directly on the Pi via SSH
+echo "🚢 Triggering build and deploy on Pi hardware..."
+ssh "$PI_USER@$PI_IP" "cd $REMOTE_PATH && docker compose up -d --build"
+
+echo "✅ Deployment command sent to Pi!"