refactor: Phase A — extraction des helpers partagés et micro-fixes

- Centralise remap_libraries_path/unmap_libraries_path dans crates/core/paths.rs
  (supprime 4 copies dupliquées dans API + indexer)
- Centralise mode_to_interval_minutes/validate_schedule_mode dans crates/core/schedule.rs
  (remplace 8 match blocks + 4 validations inline)
- Ajoute helpers env_or<T>/env_string_or dans config.rs, utilise ThumbnailConfig::default()
  comme base dans from_env() (élimine la duplication des valeurs par défaut)
- Supprime std::mem::take inutile dans books.rs
- Cible #[allow(dead_code)] sur le champ plutôt que le struct (metadata.rs)
- Remplace eprintln! par tracing::warn! dans parsers
- Fix clippy boolean logic bug dans prowlarr.rs

10 nouveaux tests unitaires (paths + schedule)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/indexer/src/scheduler.rs

@@ -1,5 +1,6 @@
 use anyhow::Result;
 use sqlx::{PgPool, Row};
+use stripstream_core::schedule::mode_to_interval_minutes;
 use tracing::info;
 use uuid::Uuid;
 
@@ -45,12 +46,7 @@ pub async fn check_and_schedule_auto_scans(pool: &PgPool) -> Result<()> {
         .await?;
 
         // Update next_scan_at
-        let interval_minutes = match scan_mode.as_str() {
-            "hourly" => 60,
-            "daily" => 1440,
-            "weekly" => 10080,
-            _ => 1440, // default daily
-        };
+        let interval_minutes = mode_to_interval_minutes(&scan_mode);
 
         sqlx::query(
             "UPDATE libraries SET last_scan_at = NOW(), next_scan_at = NOW() + INTERVAL '1 minute' * $2 WHERE id = $1"
@@ -107,12 +103,7 @@ pub async fn check_and_schedule_reading_status_push(pool: &PgPool) -> Result<()>
         .execute(pool)
         .await?;
 
-        let interval_minutes: i64 = match push_mode.as_str() {
-            "hourly" => 60,
-            "daily" => 1440,
-            "weekly" => 10080,
-            _ => 1440,
-        };
+        let interval_minutes = mode_to_interval_minutes(&push_mode);
 
         sqlx::query(
             "UPDATE libraries SET last_reading_status_push_at = NOW(), next_reading_status_push_at = NOW() + INTERVAL '1 minute' * $2 WHERE id = $1"
@@ -176,12 +167,7 @@ pub async fn check_and_schedule_download_detection(pool: &PgPool) -> Result<()>
         .execute(pool)
         .await?;
 
-        let interval_minutes: i64 = match detection_mode.as_str() {
-            "hourly" => 60,
-            "daily" => 1440,
-            "weekly" => 10080,
-            _ => 1440,
-        };
+        let interval_minutes = mode_to_interval_minutes(&detection_mode);
 
         sqlx::query(
             "UPDATE libraries SET last_download_detection_at = NOW(), next_download_detection_at = NOW() + INTERVAL '1 minute' * $2 WHERE id = $1"
@@ -238,12 +224,7 @@ pub async fn check_and_schedule_metadata_refreshes(pool: &PgPool) -> Result<()>
         .execute(pool)
         .await?;
 
-        let interval_minutes = match refresh_mode.as_str() {
-            "hourly" => 60,
-            "daily" => 1440,
-            "weekly" => 10080,
-            _ => 1440,
-        };
+        let interval_minutes = mode_to_interval_minutes(&refresh_mode);
 
         sqlx::query(
             "UPDATE libraries SET last_metadata_refresh_at = NOW(), next_metadata_refresh_at = NOW() + INTERVAL '1 minute' * $2 WHERE id = $1"

apps/indexer/src/utils.rs

@@ -5,23 +5,8 @@ use sha2::{Digest, Sha256};
 use std::path::Path;
 use chrono::Utc;
 
-pub fn remap_libraries_path(path: &str) -> String {
-    if let Ok(root) = std::env::var("LIBRARIES_ROOT_PATH") {
-        if path.starts_with("/libraries/") {
-            return path.replacen("/libraries", &root, 1);
-        }
-    }
-    path.to_string()
-}
-
-pub fn unmap_libraries_path(path: &str) -> String {
-    if let Ok(root) = std::env::var("LIBRARIES_ROOT_PATH") {
-        if path.starts_with(&root) {
-            return path.replacen(&root, "/libraries", 1);
-        }
-    }
-    path.to_string()
-}
+pub use stripstream_core::paths::remap_libraries_path;
+pub use stripstream_core::paths::unmap_libraries_path;
 
 pub fn compute_fingerprint(path: &Path, size: u64, mtime: &DateTime<Utc>) -> Result<String> {
     // Optimized: only use size + mtime + first bytes of filename for fast fingerprinting