Add /roll and friend management commands

Roll Command:
- Add /roll, /random, /rnd commands for random number generation
- Support multiple formats: /roll, /roll 100, /roll 1-100, /roll 10 50
- Broadcasts rolls to party/raid with "[Name] rolls X (min-max)" format
- Cap max roll at 10,000 to prevent abuse
- Use MSG_RANDOM_ROLL (0x1FB) bidirectional opcode

Friend Commands:
- Add /friend add <name>, /addfriend <name> to add friends
- Add /friend remove <name>, /removefriend <name> to remove friends
- Support aliases: /delfriend, /remfriend
- Maintain local friends cache mapping names to GUIDs for lookups
- Display status messages for all friend actions:
  - Friend added/removed confirmations
  - Friend online/offline notifications
  - Error messages (not found, already friends, list full, ignoring)

Social Opcodes:
- Add CMSG_ADD_FRIEND (0x69) and SMSG_FRIEND_STATUS (0x68)
- Add CMSG_DEL_FRIEND (0x6A) for friend removal
- Add CMSG_SET_CONTACT_NOTES (0x6B) for friend notes (future use)
- Add CMSG_ADD_IGNORE (0x6C) and CMSG_DEL_IGNORE (0x6D) (future use)

Implementation:
- Add RandomRollPacket builder and RandomRollParser for roll data
- Add AddFriendPacket and DelFriendPacket builders
- Add FriendStatusParser to handle server friend status updates
- Add friendsCache map to store friend name-to-GUID mappings
- Add handleRandomRoll() and handleFriendStatus() packet handlers
- Comprehensive slash command parsing with multiple formats and aliases

include/game/world_packets.hpp

@@ -700,6 +700,67 @@ public:
                                  uint32_t zones = 0);
 };
 
+// ============================================================
+// Social Commands
+// ============================================================
+
+/** CMSG_ADD_FRIEND packet builder */
+class AddFriendPacket {
+public:
+    static network::Packet build(const std::string& playerName, const std::string& note = "");
+};
+
+/** CMSG_DEL_FRIEND packet builder */
+class DelFriendPacket {
+public:
+    static network::Packet build(uint64_t friendGuid);
+};
+
+/** CMSG_SET_CONTACT_NOTES packet builder */
+class SetContactNotesPacket {
+public:
+    static network::Packet build(uint64_t friendGuid, const std::string& note);
+};
+
+/** SMSG_FRIEND_STATUS data */
+struct FriendStatusData {
+    uint8_t status = 0;  // 0 = offline, 1 = online, etc.
+    uint64_t guid = 0;
+    std::string note;
+    uint8_t chatFlag = 0;
+};
+
+/** SMSG_FRIEND_STATUS parser */
+class FriendStatusParser {
+public:
+    static bool parse(network::Packet& packet, FriendStatusData& data);
+};
+
+// ============================================================
+// Random Roll
+// ============================================================
+
+/** CMSG_RANDOM_ROLL packet builder */
+class RandomRollPacket {
+public:
+    static network::Packet build(uint32_t minRoll, uint32_t maxRoll);
+};
+
+/** SMSG_RANDOM_ROLL data */
+struct RandomRollData {
+    uint64_t rollerGuid = 0;
+    uint64_t targetGuid = 0;  // 0 for party roll
+    uint32_t minRoll = 0;
+    uint32_t maxRoll = 0;
+    uint32_t result = 0;
+};
+
+/** SMSG_RANDOM_ROLL parser */
+class RandomRollParser {
+public:
+    static bool parse(network::Packet& packet, RandomRollData& data);
+};
+
 // ============================================================
 // Phase 1: Foundation — Targeting, Name Queries
 // ============================================================