Phase 24: daily check-in system + club milestones endpoint

- migrations/0012_daily_checkin.sql: daily_checkins table tracking streak,
  coins awarded, pack granted, timestamp per profile
- services/checkin.rs: get_status() (available, streak_day, next reward),
  claim() (idempotent same-day guard, streak logic: continue if yesterday
  or today, else reset; 7-day cycle with STREAK_COINS array, day-7 pack)
- routes/club.rs: GET /club/checkin, POST /club/checkin, GET /club/milestones
  (computed from statistics, season_history, owned_cards, sbc_submissions,
  daily_checkins tables; no new DB tables needed)
- 4 new integration tests: checkin available initially, claim awards coins,
  idempotent same-day, milestones endpoint structure (93 → 93+4=97 tests)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/routes/club.rs

@@ -2,7 +2,7 @@ use crate::{
     app::AppState,
     error::AppResult,
     models::club::Club,
-    services::{club as club_svc, profile as profile_svc},
+    services::{checkin as checkin_svc, club as club_svc, profile as profile_svc, statistics as stats_svc},
 };
 use axum::{extract::State, Json};
 use serde::Deserialize;
@@ -35,3 +35,90 @@ pub async fn put_club(
     .await?;
     Ok(Json(json!({ "club": updated })))
 }
+
+pub async fn get_checkin_status(State(state): State<AppState>) -> AppResult<Json<Value>> {
+    let profile = profile_svc::get_active_profile(&state.pool).await?;
+    let status = checkin_svc::get_status(&state.pool, &profile.id).await?;
+    Ok(Json(json!({
+        "available": status.available,
+        "streak_day": status.streak_day,
+        "next_reward_coins": status.next_reward_coins,
+        "next_reward_pack": status.next_reward_pack,
+        "last_checked_in": status.last_checked_in,
+    })))
+}
+
+pub async fn post_checkin(State(state): State<AppState>) -> AppResult<Json<Value>> {
+    let profile = profile_svc::get_active_profile(&state.pool).await?;
+    let club = club_svc::get_club_by_profile(&state.pool, &profile.id).await?;
+    let r = checkin_svc::claim(&state.pool, &profile.id, &club.id).await?;
+    Ok(Json(json!({
+        "coins_awarded": r.coins_awarded,
+        "pack_awarded": r.pack_awarded,
+        "new_streak": r.new_streak,
+        "already_claimed": r.already_claimed,
+    })))
+}
+
+pub async fn get_milestones(State(state): State<AppState>) -> AppResult<Json<Value>> {
+    let profile = profile_svc::get_active_profile(&state.pool).await?;
+    let club = club_svc::get_club_by_profile(&state.pool, &profile.id).await?;
+    let stats = stats_svc::get_or_create(&state.pool, &profile.id).await?;
+
+    let seasons_completed: i64 = sqlx::query_scalar(
+        "SELECT COUNT(*) FROM season_history WHERE profile_id = ?",
+    )
+    .bind(&profile.id)
+    .fetch_one(&state.pool)
+    .await
+    .unwrap_or(0);
+
+    let highest_division: i64 = sqlx::query_scalar(
+        "SELECT COALESCE(MIN(new_division), 10) FROM season_history WHERE profile_id = ?",
+    )
+    .bind(&profile.id)
+    .fetch_one(&state.pool)
+    .await
+    .unwrap_or(10);
+
+    let cards_owned: i64 = sqlx::query_scalar(
+        "SELECT COUNT(*) FROM owned_cards WHERE club_id = ?",
+    )
+    .bind(&club.id)
+    .fetch_one(&state.pool)
+    .await
+    .unwrap_or(0);
+
+    let sbcs_completed: i64 = sqlx::query_scalar(
+        "SELECT COUNT(*) FROM sbc_submissions WHERE club_id = ? AND passed = 1",
+    )
+    .bind(&club.id)
+    .fetch_one(&state.pool)
+    .await
+    .unwrap_or(0);
+
+    let total_checkins: i64 = sqlx::query_scalar(
+        "SELECT COUNT(*) FROM daily_checkins WHERE profile_id = ?",
+    )
+    .bind(&profile.id)
+    .fetch_one(&state.pool)
+    .await
+    .unwrap_or(0);
+
+    Ok(Json(json!({
+        "total_wins": stats.matches_won,
+        "total_draws": stats.matches_drawn,
+        "total_losses": stats.matches_lost,
+        "total_matches": stats.matches_played,
+        "total_goals_scored": stats.goals_scored,
+        "total_goals_conceded": stats.goals_conceded,
+        "best_win_streak": stats.best_win_streak,
+        "total_packs_opened": stats.packs_opened,
+        "seasons_completed": seasons_completed,
+        "highest_division_reached": highest_division,
+        "cards_owned": cards_owned,
+        "sbcs_completed": sbcs_completed,
+        "total_checkins": total_checkins,
+        "club_level": club.level,
+    })))
+}