fix: fetch all Dolibarr products without tms sqlfilter

Incremental sync via t.tms filter breaks when products were created before
the service started running: their tms is older than lastSyncStart so they
are never returned. Since the sync is idempotent (ProductMapping handles
create-vs-update), always fetching all products is safe and simpler.

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

sync-service/src/main/java/com/teterialosjuanjos/tfg/sync_service/integration/dolibarr/DolibarrClient.java

@@ -7,9 +7,6 @@ import org.springframework.core.ParameterizedTypeReference;
 import org.springframework.stereotype.Component;
 import org.springframework.web.client.RestClient;
 
-import java.time.Instant;
-import java.time.ZoneOffset;
-import java.time.format.DateTimeFormatter;
 import java.util.List;
 import java.util.Map;
 
@@ -24,9 +21,6 @@ import java.util.Map;
 @Component
 public class DolibarrClient {
 
-    private static final DateTimeFormatter DOLIBARR_DATE_FORMAT =
-            DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").withZone(ZoneOffset.UTC);
-
     private final RestClient restClient;
 
     public DolibarrClient(@Qualifier("dolibarrRestClient") RestClient restClient) {
@@ -36,20 +30,15 @@ public class DolibarrClient {
     // ── Products ──────────────────────────────────────────────────────────
 
     /**
-     * Returns all products, optionally filtered by last modification date.
+     * Returns all active products (up to 500).
      *
-     * @param modifiedSince if non-null, only products with {@code tms >= modifiedSince} are returned
+     * <p>Full fetch on every run keeps sync idempotent and avoids timezone issues
+     * with Dolibarr's {@code tms} column filter. The service handles create-vs-update
+     * via {@code ProductMapping}, so re-processing unchanged products is safe.</p>
      */
-    public List<DolibarrProductDto> getProducts(Instant modifiedSince) {
+    public List<DolibarrProductDto> getProducts() {
         return restClient.get()
-                .uri(u -> {
+                .uri(u -> u.path("/products").queryParam("limit", 500).build())
-                    u.path("/products").queryParam("limit", 500);
-                    if (modifiedSince != null) {
-                        u.queryParam("sqlfilters",
-                                "(t.tms:>=:'%s')".formatted(DOLIBARR_DATE_FORMAT.format(modifiedSince)));
-                    }
-                    return u.build();
-                })
                 .retrieve()
                 .body(new ParameterizedTypeReference<List<DolibarrProductDto>>() {});
     }

sync-service/src/main/java/com/teterialosjuanjos/tfg/sync_service/sync/ProductSyncService.java

@@ -40,15 +40,9 @@ public class ProductSyncService {
     private final IntegrationProperties integrationProperties;
 
     /**
-     * Executes a full incremental product push and returns a summary.
+     * Fetches all Dolibarr products and pushes them to PrestaShop (create or update by SKU).
      */
     public SyncResult synchronize() {
-        // Determine cutoff BEFORE saving current log to avoid self-reference
-        Instant lastSyncStart = syncLogRepository
-                .findFirstBySyncTypeOrderByStartedAtDesc(SyncType.PRODUCT_PUSH)
-                .map(SyncLog::getStartedAt)
-                .orElse(null);
-
         SyncLog syncLog = syncLogRepository.save(SyncLog.builder()
                 .syncType(SyncType.PRODUCT_PUSH)
                 .startedAt(Instant.now())
@@ -59,8 +53,8 @@ public class ProductSyncService {
         List<String> errors = new ArrayList<>();
 
         try {
-            List<DolibarrProductDto> products = dolibarrClient.getProducts(lastSyncStart);
+            List<DolibarrProductDto> products = dolibarrClient.getProducts();
-            log.info("ProductSync: {} products to process (since {})", products.size(), lastSyncStart);
+            log.info("ProductSync: {} products to process", products.size());
 
             for (DolibarrProductDto product : products) {
                 if (product.ref() == null || product.ref().isBlank()) {