feat: Refactor admin UI pages to support embedded mode and improve navigation

- Updated PlayerLogs, Players, Reports, Rooms, Settings, SignupCodes, and other pages to accept an optional `embedded` prop for better integration in various contexts.
- Introduced a new Activity page consolidating audit logs and player request logs with tab navigation.
- Added Content page for community board and loading tips with tab navigation.
- Created Moderation page to unify player directory, bans, and reports under a single interface.
- Implemented SettingsHome page to manage server settings and signup codes with tab navigation.
- Enhanced the Join page to include password creation for new accounts.
- Added global friends feature in Settings to allow all accounts to be friends without database entries.
- Introduced RelationshipQueries service to manage effective friend resolution based on global friends toggle.
- Added WireDates for consistent date handling in serialized data.
- Created reusable Tabs component for consistent tab navigation across various pages.

DorkNet.Server/Controllers/Site/PublicSiteController.cs

@@ -267,16 +267,15 @@ public class PublicSiteController(
         }).ToList());
     }
 
-    public sealed record JoinRedeemRequest(string? Code, string? Username, string? DeviceId);
+    public sealed record JoinRedeemRequest(string? Code, string? Username, string? Password);
 
     /// <summary>POST /api/site/v1/join/redeem — redeem a signup code,
-    /// minting an account bound to the supplied device id. On success the
-    /// player relaunches the game and the watch's device-id login finds
-    /// the new account. Returns {ok, error?, username?}.</summary>
+    /// minting a username/password account. Returns {ok, error?,
+    /// username?}.</summary>
     [HttpPost("join/redeem")]
     public async Task<IActionResult> JoinRedeem([FromBody] JoinRedeemRequest body)
     {
-        var result = await signupCodes.RedeemAsync(body.Code, body.Username, body.DeviceId);
+        var result = await signupCodes.RedeemAsync(body.Code, body.Username, body.Password);
         if (!result.Ok)
             return BadRequest(new { ok = false, error = result.Error });
         return Ok(new { ok = true, username = result.Username, playerId = result.PlayerId });