diff --git a/TODO.md b/TODO.md
index 9c09de5..14b0bcf 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,6 +1,6 @@
 # TODO
 
-> Last updated: 2026-06-11
+> Last updated: 2026-06-11 11:42
 > Context: Form Accessibility & Resilience improvements for XAMXAM thesis submission platform
 
 ## In Progress
@@ -9,14 +9,13 @@
 
 - [ ] #aria-test-manual Test WCAG changes with VoiceOver and NVDA on full add/edit/partage form flows
 - [ ] #nojs-upload-test Test end-to-end: submit partage form with JS disabled, verify files arrive via `$_FILES`
-- [ ] #filepond-preserve Preserve FilePond temp file IDs on partage validation redirect `(partage/index.php)` `(FilepondHandler.php)`
 - [ ] #two-phase-commit Add two-phase commit: INSERT thesis `status='draft'`, COMMIT, move files, UPDATE to `active` `(ThesisCreateController.php)`
 - [ ] #cleanup-drafts Add periodic cleanup job for orphaned drafts (`just cleanup-drafts`)
-
 - [ ] #form-setup-helper Add `ThesisFormSetup` helper class to reduce bootstrap duplication across add/edit/partage `(partage/index.php)` `(admin/add.php)` `(admin/edit.php)`
 
 ## Completed
 
+- [x] #filepond-preserve Preserve FilePond temp file IDs on partage validation redirect `(partage/index.php)` `(FilepondHandler.php)` ✓
 - [x] #refactor-partage Extract partage form page chrome to `templates/partage/form-page.php` `(partage/index.php)` ✓
 - [x] #htmx-migration HTMX v2 migration: OverType editors, autosave handler, backend `HX-Request` detection ✓
 - [x] #filepond-crash FilePond crash on TFE upload forms: root cause fixed (`.filename` → `.name`), all crashes resolved ✓
diff --git a/app/public/partage/index.php b/app/public/partage/index.php
index 524d948..1a4baa0 100644
--- a/app/public/partage/index.php
+++ b/app/public/partage/index.php
@@ -536,6 +536,9 @@ function handleShareLinkSubmission(string $slug): void
         unset($_SESSION[$shareCsrfKey]);
         unset($_SESSION['share_verified_' . $slug]);
         unset($_SESSION['share_active']);
+        unset($_SESSION['share_primed_files_' . $slug]);
+        // Clear FilePond temp file tracking — files have been moved to permanent storage
+        unset($_SESSION['filepond_tmp']);
 
         // Send confirmation e-mail - on delivery failure, redirect to retry page
         $emailError = null;
diff --git a/app/templates/partials/form/form.php b/app/templates/partials/form/form.php
index 5cda0ef..dcd51fe 100644
--- a/app/templates/partials/form/form.php
+++ b/app/templates/partials/form/form.php
@@ -373,10 +373,15 @@ if ($filesMode === 'add'): ?>
         $_POST['admin_mode']    = $adminMode ? '1' : '0';
         $_POST['has_annexes']   = $formData['has_annexes'] ?? null;
 
-        $existingFilesJsonForCover         = [];
-        $existingFilesJsonForNoteIntention = [];
-        $existingFilesJsonForTfe           = [];
-        $existingFilesJsonForAnnexe        = [];
+        // Preserve FilePond temp files across validation redirects.
+        // Session temp files (uploaded via FilePond before a validation error)
+        // survive in $_SESSION['filepond_tmp'] and are fed to FilePond via
+        // data-existing-files so the user does not have to re-upload.
+        require_once APP_ROOT . '/src/FilepondHandler.php';
+        $existingFilesJsonForCover         = FilepondHandler::getSessionTempFiles('cover');
+        $existingFilesJsonForNoteIntention = FilepondHandler::getSessionTempFiles('note_intention');
+        $existingFilesJsonForTfe           = FilepondHandler::getSessionTempFiles('tfe');
+        $existingFilesJsonForAnnexe        = FilepondHandler::getSessionTempFiles('annexe');
 
         include APP_ROOT . '/templates/partials/form/fichiers-fragment.php';
         $_POST = $_savedPost;