diff --git a/wordpress/themes/cdcf-headless/includes/admin/submission-lifecycle.php b/wordpress/themes/cdcf-headless/includes/admin/submission-lifecycle.php
index 18db2c9..f865dd5 100644
--- a/wordpress/themes/cdcf-headless/includes/admin/submission-lifecycle.php
+++ b/wordpress/themes/cdcf-headless/includes/admin/submission-lifecycle.php
@@ -50,10 +50,22 @@ function cdcf_is_public_submission(int $post_id): bool {
 
 /**
  * Create + Polylang-link the missing it/es/fr/pt/de sibling drafts of an
- * EN source post, then enqueue an AI translation job per newly-created
+ * source post, then enqueue an AI translation job per newly-created
  * sibling. The existing worker (cdcf_process_translation) will auto-
  * publish each translation once its source post is `publish`.
  *
+ * Source language is derived from the post itself via
+ * pll_get_post_language() rather than assumed to be English. A Spanish
+ * (or Italian, French, etc.) public submission produces translations
+ * for the OTHER 5 languages — including English. Observed on production
+ * 2026-06-16: community_project 1534 ("Enciclopedia Católica") was
+ * submitted in Spanish; the old hardcoded target list ['it','es','fr',
+ * 'pt','de'] created siblings for IT/FR/PT/DE only (silently dropping
+ * EN since it wasn't in the list, and silently skipping ES since the
+ * post already carried that language) and the atomic save was handed
+ * {en: 1534, ...} — the source post mis-keyed as the EN translation,
+ * which Polylang rejected → empty group on all six posts.
+ *
  * Group save is **atomic** — exactly one pll_save_post_translations()
  * call after every sibling has been created. The earlier shape (one
  * save per iteration, accumulating the map) lost-updated the Polylang
@@ -67,49 +79,80 @@ function cdcf_is_public_submission(int $post_id): bool {
  * If the atomic save fails, every just-created draft is force-deleted
  * so a failed call leaves no orphans behind (same shape as /translate-all).
  *
- * @param int    $en_post_id  The English (source) post ID. MUST be the source,
- *                            not a translation — caller should resolve via
- *                            cdcf_get_source_post_id() first.
- * @param string $post_type   The CPT slug (project | community_project | local_group).
+ * @param int    $source_post_id  The source post ID, in any of the 6 configured
+ *                                Polylang languages. MUST be the source, not a
+ *                                translation — caller should resolve via
+ *                                cdcf_get_source_post_id() first.
+ * @param string $post_type       The CPT slug (project | community_project | local_group).
  */
-function cdcf_enqueue_translations_for_submission(int $en_post_id, string $post_type): void {
+function cdcf_enqueue_translations_for_submission(int $source_post_id, string $post_type): void {
     if (
         !function_exists('pll_set_post_language')
         || !function_exists('pll_save_post_translations')
         || !function_exists('pll_get_post_translations')
+        || !function_exists('pll_get_post_language')
+        || !function_exists('pll_languages_list')
     ) {
-        error_log("cdcf_enqueue_translations_for_submission: Polylang not active; skipping post {$en_post_id}.");
+        error_log("cdcf_enqueue_translations_for_submission: Polylang not active; skipping post {$source_post_id}.");
+        return;
+    }
+
+    $source_post = get_post($source_post_id);
+    if (!$source_post) {
+        error_log("cdcf_enqueue_translations_for_submission: Source post {$source_post_id} not found.");
         return;
     }
 
-    $en_post = get_post($en_post_id);
-    if (!$en_post) {
-        error_log("cdcf_enqueue_translations_for_submission: Source post {$en_post_id} not found.");
+    // Source language is whatever Polylang has assigned to this post —
+    // ES for a Spanish submission, IT for an Italian submission, etc.
+    // Fall back to the Polylang site default if the post has no
+    // language (e.g. submission flow forgot to call pll_set_post_language).
+    $source_lang = pll_get_post_language($source_post_id, 'slug') ?: '';
+    if (!$source_lang && function_exists('pll_default_language')) {
+        $source_lang = pll_default_language('slug') ?: '';
+    }
+    if (!$source_lang) {
+        error_log("cdcf_enqueue_translations_for_submission: Source post {$source_post_id} has no Polylang language and no default; aborting.");
         return;
     }
 
-    $target_langs = ['it', 'es', 'fr', 'pt', 'de'];
+    // Target = every configured language EXCEPT the source's own.
+    $all_langs = pll_languages_list(['fields' => 'slug']);
+    if (!is_array($all_langs) || empty($all_langs)) {
+        error_log("cdcf_enqueue_translations_for_submission: pll_languages_list returned no languages; aborting.");
+        return;
+    }
+    $target_langs = array_values(array_filter(
+        $all_langs,
+        static fn($l) => $l !== $source_lang
+    ));
+    if (empty($target_langs)) {
+        error_log("cdcf_enqueue_translations_for_submission: Only the source language is configured; nothing to translate.");
+        return;
+    }
 
     // Pre-seed the map from any existing group (handles partial re-runs
     // where some langs are already linked from a previous attempt).
-    $translations = pll_get_post_translations($en_post_id);
-    $translations['en'] = $en_post_id;
+    $translations = pll_get_post_translations($source_post_id);
+    $translations[$source_lang] = $source_post_id;
 
     error_log(sprintf(
-        'cdcf_enqueue_translations_for_submission: ENTER post_id=%d post_type=%s pre_seed_group=%s',
-        $en_post_id,
+        'cdcf_enqueue_translations_for_submission: ENTER post_id=%d post_type=%s source_lang=%s targets=[%s] pre_seed_group=%s',
+        $source_post_id,
         $post_type,
+        $source_lang,
+        implode(',', $target_langs),
         cdcf_format_lang_map($translations)
     ));
 
     // Phase 0: ensure attachment translations exist for the source's
     // featured_image. Without this, post-translation workers would
-    // either render the EN image (with EN alt-text / SEO regression) or
-    // get a null featuredImage from WPGraphQL on non-EN posts. Running
-    // before Phase 1 means by the time the worker handles each post
-    // translation, pll_get_post(thumbnail, lang) already returns the
-    // matching-language attachment sibling.
-    $source_thumbnail_id = (int) get_post_thumbnail_id($en_post_id);
+    // either render the source-lang image (with source-lang alt-text /
+    // SEO regression) or get a null featuredImage from WPGraphQL on
+    // other-language posts. Running before Phase 1 means by the time
+    // the worker handles each post translation, pll_get_post(thumbnail,
+    // lang) already returns the matching-language attachment sibling.
+    $source_thumbnail_id = (int) get_post_thumbnail_id($source_post_id);
     if ($source_thumbnail_id > 0) {
         cdcf_ensure_attachment_translations($source_thumbnail_id, $target_langs);
     }
@@ -128,11 +171,11 @@ function cdcf_enqueue_translations_for_submission(int $en_post_id, string $post_
         $trans_id = wp_insert_post([
             'post_type'   => $post_type,
             'post_status' => 'draft',
-            'post_title'  => $en_post->post_title,
+            'post_title'  => $source_post->post_title,
         ]);
 
         if (is_wp_error($trans_id) || !$trans_id) {
-            error_log("cdcf_enqueue_translations_for_submission: Failed to create {$lang} sibling for post {$en_post_id}.");
+            error_log("cdcf_enqueue_translations_for_submission: Failed to create {$lang} sibling for post {$source_post_id}.");
             continue;
         }
 
@@ -143,7 +186,7 @@ function cdcf_enqueue_translations_for_submission(int $en_post_id, string $post_
 
     error_log(sprintf(
         'cdcf_enqueue_translations_for_submission: PHASE_1_DONE post_id=%d newly_created=%s already_linked=%s',
-        $en_post_id,
+        $source_post_id,
         cdcf_format_lang_map($newly_created),
         cdcf_format_lang_map($already_linked)
     ));
@@ -152,7 +195,7 @@ function cdcf_enqueue_translations_for_submission(int $en_post_id, string $post_
         // Nothing new to link or enqueue.
         error_log(sprintf(
             'cdcf_enqueue_translations_for_submission: NO_OP post_id=%d (all target langs already pre-seeded); exiting without group save.',
-            $en_post_id
+            $source_post_id
         ));
         return;
     }
@@ -162,7 +205,7 @@ function cdcf_enqueue_translations_for_submission(int $en_post_id, string $post_
     if ($save_result === false) {
         error_log(sprintf(
             'cdcf_enqueue_translations_for_submission: PHASE_2_FAIL post_id=%d pll_save_post_translations returned false; rolling back %d draft(s): %s',
-            $en_post_id,
+            $source_post_id,
             count($newly_created),
             cdcf_format_lang_map($newly_created)
         ));
@@ -174,7 +217,7 @@ function cdcf_enqueue_translations_for_submission(int $en_post_id, string $post_
 
     error_log(sprintf(
         'cdcf_enqueue_translations_for_submission: PHASE_2_OK post_id=%d atomic group save succeeded; final_group=%s',
-        $en_post_id,
+        $source_post_id,
         cdcf_format_lang_map($translations)
     ));
 
@@ -183,16 +226,16 @@ function cdcf_enqueue_translations_for_submission(int $en_post_id, string $post_
     $queue_name = function_exists('cdcf_enqueue_translation') ? 'redis' : 'wp-cron';
     foreach ($newly_created as $lang => $trans_id) {
         if (function_exists('cdcf_enqueue_translation')) {
-            cdcf_enqueue_translation($trans_id, $en_post_id, $lang);
+            cdcf_enqueue_translation($trans_id, $source_post_id, $lang);
         } else {
-            wp_schedule_single_event(time(), 'cdcf_async_translate', [$trans_id, $en_post_id, $lang]);
+            wp_schedule_single_event(time(), 'cdcf_async_translate', [$trans_id, $source_post_id, $lang]);
             spawn_cron();
         }
     }
 
     error_log(sprintf(
         'cdcf_enqueue_translations_for_submission: PHASE_3_DONE post_id=%d queued %d job(s) via %s: %s',
-        $en_post_id,
+        $source_post_id,
         count($newly_created),
         $queue_name,
         cdcf_format_lang_map($newly_created)
diff --git a/wordpress/themes/cdcf-headless/tests/SubmissionLifecycleTest.php b/wordpress/themes/cdcf-headless/tests/SubmissionLifecycleTest.php
index 9e9727f..403f0ad 100644
--- a/wordpress/themes/cdcf-headless/tests/SubmissionLifecycleTest.php
+++ b/wordpress/themes/cdcf-headless/tests/SubmissionLifecycleTest.php
@@ -55,6 +55,13 @@ private function stubCommonFunctions(): void
         // tests that don't care about featured-image translation get a
         // default of 0 (no thumbnail = Phase 0 is a no-op).
         Functions\when('get_post_thumbnail_id')->justReturn(0);
+        // Source-language detection (PR following #227): the function
+        // resolves source_lang via pll_get_post_language and the target
+        // set via pll_languages_list rather than hardcoding 'en'. Default
+        // both to the EN-source shape so existing EN-source tests stay
+        // green; tests for non-EN sources override these.
+        Functions\when('pll_get_post_language')->justReturn('en');
+        Functions\when('pll_languages_list')->justReturn(['en', 'it', 'es', 'fr', 'pt', 'de']);
     }
 
     private function allowAllFunctionsToExist(): void
@@ -286,6 +293,8 @@ public function test_enqueue_translations_falls_back_to_wp_cron_when_redis_helpe
         Functions\when('pll_set_post_language')->justReturn(true);
         Functions\when('pll_save_post_translations')->justReturn(true);
         Functions\when('pll_get_post_translations')->justReturn([]);
+        Functions\when('pll_get_post_language')->justReturn('en');
+        Functions\when('pll_languages_list')->justReturn(['en', 'it', 'es', 'fr', 'pt', 'de']);
         Functions\when('get_post')->justReturn($this->fakePost(['ID' => 42]));
         Functions\when('wp_insert_post')->justReturn(200);
         // Phase 0 (PR #208): no thumbnail on the source → skip attachment
@@ -369,6 +378,67 @@ function (array $map) use (&$saves): bool {
         );
     }
 
+    public function test_enqueue_translations_uses_dynamic_source_language_for_non_english_source(): void
+    {
+        // Regression guard for the hardcoded-EN bug observed on production
+        // 2026-06-16: community_project 1534 was submitted in Spanish; the
+        // publish hook created siblings for IT/FR/PT/DE only (NOT EN — the
+        // user's expected target) and the Polylang group came out empty
+        // because pll_save_post_translations was handed {en: 1534, ...} —
+        // the source post was mis-keyed as the EN translation, so Polylang
+        // rejected the malformed map.
+        //
+        // The function must derive source_lang from pll_get_post_language
+        // and target_langs from pll_languages_list, treating any of the 6
+        // languages as a possible submission source.
+        $this->stubCommonFunctions();
+        Functions\when('pll_get_post_language')->justReturn('es');
+        Functions\when('get_post')->justReturn($this->fakePost([
+            'ID'         => 42,
+            'post_title' => 'Enciclopedia Católica',
+            'post_type'  => 'community_project',
+        ]));
+
+        $counter = 199;
+        Functions\when('wp_insert_post')->alias(
+            function () use (&$counter): int {
+                $counter++;
+                return $counter;
+            }
+        );
+
+        $saves = [];
+        Functions\when('pll_save_post_translations')->alias(
+            function (array $map) use (&$saves): bool {
+                $saves[] = $map;
+                return true;
+            }
+        );
+
+        $enqueued = [];
+        Functions\when('cdcf_enqueue_translation')->alias(
+            function (int $post_id, int $source_id, string $lang) use (&$enqueued): string {
+                $enqueued[$lang] = $post_id;
+                return 'redis';
+            }
+        );
+        $this->allowAllFunctionsToExist();
+
+        cdcf_enqueue_translations_for_submission(42, 'community_project');
+
+        $this->assertCount(1, $saves, 'pll_save_post_translations must be called exactly once');
+        $this->assertSame(
+            ['es' => 42, 'en' => 200, 'it' => 201, 'fr' => 202, 'pt' => 203, 'de' => 204],
+            $saves[0],
+            'the source post must be keyed under its actual language (es), and the 5 freshly-created siblings must cover the other 5 languages — INCLUDING en, which the old hardcoded ["it","es","fr","pt","de"] target list silently dropped.'
+        );
+        $this->assertSame(
+            ['en' => 200, 'it' => 201, 'fr' => 202, 'pt' => 203, 'de' => 204],
+            $enqueued,
+            'every non-source language must be enqueued for translation, and the source language (es) must NOT be re-enqueued against itself.'
+        );
+    }
+
     public function test_enqueue_translations_skips_save_and_enqueue_when_all_langs_already_linked(): void
     {
         // Pre-seed already covers every target lang — no new drafts to