Phase 9: division/season tracking, club customization, pack history, notifications

- GET /division returns live season stats (points, record, promotion threshold)
- PUT /club allows updating club name and manager_name
- GET /packs/history returns opened packs with full card definitions
- GET /notifications dynamically surfaces completed objectives, expiring loans, season end
- Club model gains manager_name column (migration 0006 already added it)
- Pack model gains opened_cards and opened_at; pack SELECT queries updated
- 9 new integration tests — all 45 pass, clippy clean

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

src/routes/division.rs

@@ -0,0 +1,32 @@
+use axum::{extract::State, Json};
+use serde_json::{json, Value};
+
+use crate::{
+    app::AppState,
+    error::AppResult,
+    services::{club as club_svc, profile as profile_svc, season as season_svc},
+};
+
+pub async fn get_division(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?;
+
+    // Ensure a season row exists (idempotent)
+    let _ = club; // suppress unused warning; we need club_id later if we extend this
+    let season = season_svc::get_or_create(&state.pool, &profile.id).await?;
+
+    Ok(Json(json!({
+        "division": season.division,
+        "season_number": season.season_number,
+        "season_points": season.season_points,
+        "matches_played": season.matches_played,
+        "matches_remaining": season.matches_remaining(),
+        "record": {
+            "wins": season.wins,
+            "draws": season.draws,
+            "losses": season.losses,
+        },
+        "pts_for_promotion": season.pts_for_promotion(),
+        "started_at": season.started_at,
+    })))
+}