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/club.rs

@@ -5,9 +5,33 @@ use crate::{
     services::{club as club_svc, profile as profile_svc},
 };
 use axum::{extract::State, Json};
+use serde::Deserialize;
+use serde_json::{json, Value};
 
 pub async fn get_club(State(state): State<AppState>) -> AppResult<Json<Club>> {
     let profile = profile_svc::get_active_profile(&state.pool).await?;
     let club = club_svc::get_club_by_profile(&state.pool, &profile.id).await?;
     Ok(Json(club))
 }
+
+#[derive(Deserialize)]
+pub struct UpdateClubRequest {
+    pub name: Option<String>,
+    pub manager_name: Option<String>,
+}
+
+pub async fn put_club(
+    State(state): State<AppState>,
+    Json(req): Json<UpdateClubRequest>,
+) -> 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 updated = club_svc::update_club(
+        &state.pool,
+        &club.id,
+        req.name.as_deref(),
+        req.manager_name.as_deref(),
+    )
+    .await?;
+    Ok(Json(json!({ "club": updated })))
+}