feat(mission): wire Tier 1 emits — rank/free/challenge match events

Adds IMissionProgressService to RankBattle, FreeBattle, ArenaTwoPickBattle, and
ArenaTwoPick controllers. Each finish handler emits the appropriate
MissionEventKeys builder result:

- RankBattle.Finish (win) → Ranked.WinAll(classId)
  Includes AI-rank routes; on a private server AI wins count the same.
- FreeBattle.Finish (win) → Free.WinAll() (aggregates only)
- ArenaTwoPickBattle.Finish → Challenge.MatchPlayAll or MatchWinAll
  Always fires challenge_play; wins additionally fire challenge_win and
  the ranked/arena/daily aggregates.
- ArenaTwoPick.Finish (5-win full clear) → Challenge.FullClearAll
  Gated on RunFinishOutcome.WasFullClear from the previous commit.

This closes six of the eight remaining catalog wire-up gaps; class_level_up
and rank_achieved follow in Tier 2 (need pre-state detection).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

SVSim.EmulatedEntrypoint/Controllers/ArenaTwoPickController.cs

@@ -1,4 +1,5 @@
 using Microsoft.AspNetCore.Mvc;
+using SVSim.Database.Services;
 using SVSim.EmulatedEntrypoint.Models.Dtos.Requests.ArenaTwoPick;
 using SVSim.EmulatedEntrypoint.Services;
 
@@ -8,7 +9,13 @@ namespace SVSim.EmulatedEntrypoint.Controllers;
 public class ArenaTwoPickController : SVSimController
 {
     private readonly IArenaTwoPickService _svc;
-    public ArenaTwoPickController(IArenaTwoPickService svc) => _svc = svc;
+    private readonly IMissionProgressService _missionProgress;
+
+    public ArenaTwoPickController(IArenaTwoPickService svc, IMissionProgressService missionProgress)
+    {
+        _svc = svc;
+        _missionProgress = missionProgress;
+    }
 
     [HttpPost("top")]
     public async Task<IActionResult> Top([FromBody] TopRequest _)
@@ -46,12 +53,17 @@ public class ArenaTwoPickController : SVSimController
     }
 
     [HttpPost("finish")]
-    public async Task<IActionResult> Finish([FromBody] FinishRequest _)
+    public async Task<IActionResult> Finish([FromBody] FinishRequest _, CancellationToken ct = default)
     {
         if (!TryGetViewerId(out var vid)) return Unauthorized();
         return await GuardAsync(async () =>
         {
             var outcome = await _svc.FinishAsync(vid);
+            if (outcome.WasFullClear)
+            {
+                await _missionProgress.RecordEventAsync(
+                    vid, MissionEventKeys.Challenge.FullClearAll(), ct: ct);
+            }
             return outcome.Response;
         });
     }