feat: add max_articles_per_source setting (migration + model + DB)

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

CLAUDE.md

@@ -117,7 +117,7 @@ cd frontend && npx tsc --noEmit
 - `GET /api/v1/admin/users` — user list
 - `PUT /api/v1/admin/users/:id/role` — role management
 
-## Database (11 migrations)
+## Database (12 migrations)
 Tables: `users`, `sessions`, `magic_link_tokens`, `user_settings`, `sources`, `syntheses`, `admin_providers`, `admin_rate_limits`, `user_api_keys`, `audit_log`
 
 ## Environment Variables

backend/migrations/20260323000012_add_max_articles_per_source.sql

@@ -0,0 +1 @@
+ALTER TABLE settings ADD COLUMN max_articles_per_source INTEGER NOT NULL DEFAULT 3;

backend/src/db/settings.rs

@@ -17,6 +17,7 @@ struct SettingsRow {
     max_age_days: i32,
     categories: serde_json::Value,
     max_items_per_category: i32,
+    max_articles_per_source: i32,
     search_agent_behavior: String,
     ai_provider: String,
     ai_model: String,
@@ -40,6 +41,7 @@ impl TryFrom<SettingsRow> for UserSettings {
             max_age_days: row.max_age_days,
             categories,
             max_items_per_category: row.max_items_per_category,
+            max_articles_per_source: row.max_articles_per_source,
             search_agent_behavior: row.search_agent_behavior,
             ai_provider: row.ai_provider,
             ai_model: row.ai_model,
@@ -66,10 +68,10 @@ pub async fn get_or_create_default(
 
     let row = sqlx::query_as::<_, SettingsRow>(
         r#"
-        INSERT INTO settings (user_id, theme, max_age_days, categories, max_items_per_category, search_agent_behavior, ai_provider, ai_model, ai_model_writing, rate_limit_max_requests, rate_limit_time_window_seconds)
+        INSERT INTO settings (user_id, theme, max_age_days, categories, max_items_per_category, search_agent_behavior, ai_provider, ai_model, ai_model_writing, rate_limit_max_requests, rate_limit_time_window_seconds, max_articles_per_source)
-        VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
+        VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)
         ON CONFLICT (user_id) DO UPDATE SET user_id = settings.user_id
-        RETURNING user_id, theme, max_age_days, categories, max_items_per_category, search_agent_behavior, ai_provider, ai_model, ai_model_writing, rate_limit_max_requests, rate_limit_time_window_seconds, updated_at
+        RETURNING user_id, theme, max_age_days, categories, max_items_per_category, search_agent_behavior, ai_provider, ai_model, ai_model_writing, rate_limit_max_requests, rate_limit_time_window_seconds, max_articles_per_source, updated_at
         "#,
     )
     .bind(user_id)
@@ -83,6 +85,7 @@ pub async fn get_or_create_default(
     .bind(&defaults.ai_model_writing)
     .bind(defaults.rate_limit_max_requests)
     .bind(defaults.rate_limit_time_window_seconds)
+    .bind(defaults.max_articles_per_source)
     .fetch_one(pool)
     .await?;
 
@@ -101,8 +104,8 @@ pub async fn upsert(
 
     let row = sqlx::query_as::<_, SettingsRow>(
         r#"
-        INSERT INTO settings (user_id, theme, max_age_days, categories, max_items_per_category, search_agent_behavior, ai_provider, ai_model, ai_model_writing, rate_limit_max_requests, rate_limit_time_window_seconds)
+        INSERT INTO settings (user_id, theme, max_age_days, categories, max_items_per_category, search_agent_behavior, ai_provider, ai_model, ai_model_writing, rate_limit_max_requests, rate_limit_time_window_seconds, max_articles_per_source)
-        VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
+        VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)
         ON CONFLICT (user_id) DO UPDATE SET
             theme = EXCLUDED.theme,
             max_age_days = EXCLUDED.max_age_days,
@@ -114,8 +117,9 @@ pub async fn upsert(
             ai_model_writing = EXCLUDED.ai_model_writing,
             rate_limit_max_requests = EXCLUDED.rate_limit_max_requests,
             rate_limit_time_window_seconds = EXCLUDED.rate_limit_time_window_seconds,
+            max_articles_per_source = EXCLUDED.max_articles_per_source,
             updated_at = now()
-        RETURNING user_id, theme, max_age_days, categories, max_items_per_category, search_agent_behavior, ai_provider, ai_model, ai_model_writing, rate_limit_max_requests, rate_limit_time_window_seconds, updated_at
+        RETURNING user_id, theme, max_age_days, categories, max_items_per_category, search_agent_behavior, ai_provider, ai_model, ai_model_writing, rate_limit_max_requests, rate_limit_time_window_seconds, max_articles_per_source, updated_at
         "#,
     )
     .bind(user_id)
@@ -129,6 +133,7 @@ pub async fn upsert(
     .bind(&req.ai_model_writing)
     .bind(req.rate_limit_max_requests)
     .bind(req.rate_limit_time_window_seconds)
+    .bind(req.max_articles_per_source)
     .fetch_one(pool)
     .await?;
 

backend/src/models/settings.rs

@@ -12,6 +12,7 @@ pub struct UserSettings {
     pub max_age_days: i32,
     pub categories: Vec<String>,
     pub max_items_per_category: i32,
+    pub max_articles_per_source: i32,
     pub search_agent_behavior: String,
     pub ai_provider: String,
     pub ai_model: String,
@@ -28,6 +29,7 @@ pub struct SettingsResponse {
     pub max_age_days: i32,
     pub categories: Vec<String>,
     pub max_items_per_category: i32,
+    pub max_articles_per_source: i32,
     pub search_agent_behavior: String,
     pub ai_provider: String,
     pub ai_model: String,
@@ -43,6 +45,7 @@ impl From<UserSettings> for SettingsResponse {
             max_age_days: s.max_age_days,
             categories: s.categories,
             max_items_per_category: s.max_items_per_category,
+            max_articles_per_source: s.max_articles_per_source,
             search_agent_behavior: s.search_agent_behavior,
             ai_provider: s.ai_provider,
             ai_model: s.ai_model,
@@ -60,6 +63,7 @@ pub struct UpdateSettingsRequest {
     pub max_age_days: i32,
     pub categories: Vec<String>,
     pub max_items_per_category: i32,
+    pub max_articles_per_source: i32,
     pub search_agent_behavior: String,
     pub ai_provider: String,
     pub ai_model: String,
@@ -103,6 +107,9 @@ impl UpdateSettingsRequest {
         if !(1..=50).contains(&self.max_items_per_category) {
             return Err("max_items_per_category must be between 1 and 50".into());
         }
+        if !(1..=10).contains(&self.max_articles_per_source) {
+            return Err("max_articles_per_source must be between 1 and 10".into());
+        }
         if self.search_agent_behavior.len() > 2000 {
             return Err("search_agent_behavior must be at most 2000 characters".into());
         }
@@ -144,6 +151,7 @@ impl Default for UserSettings {
                 "Opinions et analyses".to_string(),
             ],
             max_items_per_category: 4,
+            max_articles_per_source: 3,
             search_agent_behavior: String::new(),
             ai_provider: String::new(),
             ai_model: String::new(),
@@ -166,6 +174,7 @@ mod tests {
             max_age_days: 7,
             categories: vec!["Category 1".into(), "Category 2".into()],
             max_items_per_category: 4,
+            max_articles_per_source: 3,
             search_agent_behavior: String::new(),
             ai_provider: String::new(),
             ai_model: String::new(),

backend/src/services/prompts.rs

@@ -144,6 +144,7 @@ mod tests {
                 "Recherche et innovation".to_string(),
             ],
             max_items_per_category: 4,
+            max_articles_per_source: 3,
             search_agent_behavior: String::new(),
             ai_provider: String::new(),
             ai_model: String::new(),