diff --git a/config/sync/core.entity_form_display.node.ligne_comptable.default.yml b/config/sync/core.entity_form_display.node.ligne_comptable.default.yml
index 57fb30b..0bacc0e 100644
--- a/config/sync/core.entity_form_display.node.ligne_comptable.default.yml
+++ b/config/sync/core.entity_form_display.node.ligne_comptable.default.yml
@@ -6,6 +6,7 @@ dependencies:
     - field.field.node.ligne_comptable.field_client
     - field.field.node.ligne_comptable.field_date_ligne
     - field.field.node.ligne_comptable.field_entree_liee
+    - field.field.node.ligne_comptable.field_flag
     - field.field.node.ligne_comptable.field_montant_ht
     - field.field.node.ligne_comptable.field_montant_ttc
     - field.field.node.ligne_comptable.field_notes
@@ -54,6 +55,16 @@ content:
       size: 60
       placeholder: ''
     third_party_settings: {  }
+  field_flag:
+    type: entity_reference_autocomplete_tags
+    weight: 8
+    region: content
+    settings:
+      match_operator: CONTAINS
+      match_limit: 10
+      size: 60
+      placeholder: ''
+    third_party_settings: {  }
   field_montant_ht:
     type: number
     weight: 3
diff --git a/config/sync/core.entity_view_display.node.ligne_comptable.default.yml b/config/sync/core.entity_view_display.node.ligne_comptable.default.yml
index 3ec06a2..a015afe 100644
--- a/config/sync/core.entity_view_display.node.ligne_comptable.default.yml
+++ b/config/sync/core.entity_view_display.node.ligne_comptable.default.yml
@@ -6,6 +6,7 @@ dependencies:
     - field.field.node.ligne_comptable.field_client
     - field.field.node.ligne_comptable.field_date_ligne
     - field.field.node.ligne_comptable.field_entree_liee
+    - field.field.node.ligne_comptable.field_flag
     - field.field.node.ligne_comptable.field_montant_ht
     - field.field.node.ligne_comptable.field_montant_ttc
     - field.field.node.ligne_comptable.field_notes
@@ -48,6 +49,14 @@ content:
     third_party_settings: {  }
     weight: 2
     region: content
+  field_flag:
+    type: entity_reference_label
+    label: above
+    settings:
+      link: true
+    third_party_settings: {  }
+    weight: 8
+    region: content
   field_montant_ht:
     type: number_decimal
     label: above
diff --git a/config/sync/field.field.node.ligne_comptable.field_flag.yml b/config/sync/field.field.node.ligne_comptable.field_flag.yml
new file mode 100644
index 0000000..214d4f5
--- /dev/null
+++ b/config/sync/field.field.node.ligne_comptable.field_flag.yml
@@ -0,0 +1,25 @@
+uuid: c89c4d76-167a-4b60-b5f1-50aa3b349b80
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.node.field_flag
+    - node.type.ligne_comptable
+    - taxonomy.vocabulary.flag
+id: node.ligne_comptable.field_flag
+field_name: field_flag
+entity_type: node
+bundle: ligne_comptable
+label: Signalement
+description: ''
+required: false
+translatable: true
+default_value: {  }
+default_value_callback: ''
+settings:
+  handler: 'default:taxonomy_term'
+  handler_settings:
+    target_bundles:
+      flag: flag
+    auto_create: true
+field_type: entity_reference
diff --git a/config/sync/field.storage.node.field_flag.yml b/config/sync/field.storage.node.field_flag.yml
new file mode 100644
index 0000000..b1e3fbf
--- /dev/null
+++ b/config/sync/field.storage.node.field_flag.yml
@@ -0,0 +1,20 @@
+uuid: 0921a265-d874-487c-bf0a-09a389322d6b
+langcode: en
+status: true
+dependencies:
+  module:
+    - node
+    - taxonomy
+id: node.field_flag
+field_name: field_flag
+entity_type: node
+type: entity_reference
+settings:
+  target_type: taxonomy_term
+module: core
+locked: false
+cardinality: -1
+translatable: true
+indexes: {  }
+persist_with_no_fields: false
+custom_storage: false
diff --git a/config/sync/taxonomy.vocabulary.flag.yml b/config/sync/taxonomy.vocabulary.flag.yml
new file mode 100644
index 0000000..6eedf25
--- /dev/null
+++ b/config/sync/taxonomy.vocabulary.flag.yml
@@ -0,0 +1,9 @@
+uuid: 01c508f8-ba10-40d7-8d8b-5c2c362bd761
+langcode: en
+status: true
+dependencies: {  }
+name: Signalement
+vid: flag
+description: null
+weight: 0
+new_revision: false
diff --git a/web/modules/custom/figli_compta_ledger/css/home.css b/web/modules/custom/figli_compta_ledger/css/home.css
index 7c61261..0ea1214 100644
--- a/web/modules/custom/figli_compta_ledger/css/home.css
+++ b/web/modules/custom/figli_compta_ledger/css/home.css
@@ -9,6 +9,7 @@
   --figli-border: #dcdee2;
   --figli-error: #c9312b;
   --figli-positive: #1a7f37;
+  --figli-warning: #b8860b;
   --figli-col-hover: rgba(15, 23, 42, 0.05);
 
   font-family: Inter, -apple-system, sans-serif;
@@ -24,6 +25,7 @@ html.gin--dark-mode #figli-home-app {
   --figli-border: #3d3e42;
   --figli-error: #ff6b6b;
   --figli-positive: #4ade80;
+  --figli-warning: #f0b429;
   --figli-col-hover: rgba(255, 255, 255, 0.07);
 }
 
@@ -205,6 +207,12 @@ html.gin--dark-mode #figli-home-app {
   max-width: 340px;
 }
 
+#figli-home-app td.figli-flag-cell {
+  white-space: normal;
+  min-width: 120px;
+  max-width: 220px;
+}
+
 #figli-home-app tr.figli-group-row td {
   background: var(--figli-bg-alt);
   color: var(--figli-text);
@@ -277,6 +285,27 @@ html.gin--dark-mode #figli-home-app {
   font-weight: 700;
 }
 
+/* Signalé rows: a thick amber accent bar on the left edge, deliberately
+   a different technique from the error row's thin all-around border
+   above (box-shadow, not border) -- so a row that's both in écart *and*
+   signalée shows both indicators at once instead of one overwriting the
+   other's border-left. */
+#figli-home-app tr.figli-flag-row td:first-child {
+  box-shadow: inset 4px 0 0 var(--figli-warning);
+}
+
+#figli-home-app .figli-flag-badge {
+  display: inline-block;
+  padding: 0.05rem 0.4rem;
+  margin: 0 0.2rem 0.15rem 0;
+  border-radius: 8px;
+  font-size: 0.68rem;
+  font-weight: 600;
+  background: color-mix(in srgb, var(--figli-warning) 15%, transparent);
+  color: var(--figli-warning);
+  white-space: nowrap;
+}
+
 /* Column highlight to pair with the row hover, forming a crosshair over
    the hovered cell. box-shadow (not background) so it layers on top of
    whatever the cell already has -- sticky header/footer backgrounds,
diff --git a/web/modules/custom/figli_compta_ledger/figli_compta_ledger.install b/web/modules/custom/figli_compta_ledger/figli_compta_ledger.install
index b0efdce..a43b1a2 100644
--- a/web/modules/custom/figli_compta_ledger/figli_compta_ledger.install
+++ b/web/modules/custom/figli_compta_ledger/figli_compta_ledger.install
@@ -46,6 +46,9 @@ function _figli_compta_ledger_clients() {
 function figli_compta_ledger_install() {
   _figli_compta_ledger_create_vocabulary('compte', 'Compte', _figli_compta_ledger_comptes());
   _figli_compta_ledger_create_vocabulary('client', 'Client', _figli_compta_ledger_clients());
+  // No starter terms -- unlike compte/client, flags are created on the fly
+  // as they're needed (see field_flag's auto_create handler setting below).
+  _figli_compta_ledger_create_vocabulary('flag', 'Signalement', []);
   _figli_compta_ledger_create_paragraph_repartition();
   _figli_compta_ledger_create_node_type_ligne_comptable();
 }
@@ -87,16 +90,25 @@ function _figli_field($entity_type, $bundle, $field_name, $label, $type, array $
   }
 }
 
-function _figli_entity_ref_field($entity_type, $bundle, $field_name, $label, $target_type, $target_bundle, $required = FALSE) {
+function _figli_entity_ref_field($entity_type, $bundle, $field_name, $label, $target_type, $target_bundle, $required = FALSE, $cardinality = 1, $auto_create = FALSE) {
   if (!FieldStorageConfig::loadByName($entity_type, $field_name)) {
     FieldStorageConfig::create([
       'field_name' => $field_name,
       'entity_type' => $entity_type,
       'type' => 'entity_reference',
+      'cardinality' => $cardinality,
       'settings' => ['target_type' => $target_type],
     ])->save();
   }
   if (!FieldConfig::loadByName($entity_type, $bundle, $field_name)) {
+    $handler_settings = ['target_bundles' => [$target_bundle => $target_bundle]];
+    // Lets the tags-style widget create a new term on the fly instead of
+    // rejecting anything not already in the vocabulary -- same "autocreate"
+    // behavior LedgerActionsController::updateField() already replicates
+    // by hand for the /lignes inline-edit endpoint (client, flag).
+    if ($auto_create) {
+      $handler_settings['auto_create'] = TRUE;
+    }
     FieldConfig::create([
       'field_name' => $field_name,
       'entity_type' => $entity_type,
@@ -105,7 +117,7 @@ function _figli_entity_ref_field($entity_type, $bundle, $field_name, $label, $ta
       'required' => $required,
       'settings' => [
         'handler' => 'default:' . $target_type,
-        'handler_settings' => ['target_bundles' => [$target_bundle => $target_bundle]],
+        'handler_settings' => $handler_settings,
       ],
     ])->save();
   }
@@ -202,6 +214,14 @@ function _figli_compta_ledger_create_node_type_ligne_comptable() {
   _figli_field('node', 'ligne_comptable', 'field_montant_ttc', 'Montant TTC (€)', 'decimal', ['precision' => 12, 'scale' => 2]);
   _figli_field('node', 'ligne_comptable', 'field_notes', 'Notes / détail', 'string_long');
 
+  // Free-tagging signalement (e.g. "client impayé", "à relancer") -- purely
+  // informational, never read by figli_compta_ledger_node_presave() or any
+  // total/solde calculation. Multi-value (-1) + auto_create: a line can
+  // carry several tags, and typing a new one creates it rather than
+  // rejecting it, same as the /lignes inline-edit endpoint already does
+  // by hand for field_client.
+  _figli_entity_ref_field('node', 'ligne_comptable', 'field_flag', 'Signalement', 'taxonomy_term', 'flag', FALSE, -1, TRUE);
+
   _figli_paragraph_field('node', 'ligne_comptable', 'field_repartition', 'Répartition', 'repartition');
 
   if (!EntityFormDisplay::load('node.ligne_comptable.default')) {
@@ -219,6 +239,7 @@ function _figli_compta_ledger_create_node_type_ligne_comptable() {
       ->setComponent('field_montant_ttc', ['type' => 'number', 'weight' => 5])
       ->setComponent('field_repartition', ['type' => 'paragraphs', 'weight' => 6, 'settings' => ['title' => 'Répartition', 'title_plural' => 'Répartitions', 'edit_mode' => 'open', 'add_mode' => 'button']])
       ->setComponent('field_notes', ['type' => 'string_textarea', 'weight' => 7])
+      ->setComponent('field_flag', ['type' => 'entity_reference_autocomplete_tags', 'weight' => 8])
       ->save();
   }
 
@@ -237,6 +258,7 @@ function _figli_compta_ledger_create_node_type_ligne_comptable() {
       ->setComponent('field_montant_ttc', ['type' => 'number_decimal', 'weight' => 5])
       ->setComponent('field_repartition', ['type' => 'entity_reference_revisions_entity_view', 'weight' => 6])
       ->setComponent('field_notes', ['type' => 'basic_string', 'weight' => 7])
+      ->setComponent('field_flag', ['type' => 'entity_reference_label', 'weight' => 8])
       ->save();
   }
 }
@@ -310,3 +332,24 @@ function figli_compta_ledger_update_8002() {
 
   return "Numéro de facture rempli pour $filled lignes, $skipped laissées vides (aucun motif fiable trouvé).";
 }
+
+/**
+ * Adds field_flag (Signalement) to ligne_comptable -- free tagging for
+ * problems that can't be detected automatically (e.g. "client impayé"),
+ * see figli_compta_ledger.module's docblock. No backfill: unlike
+ * field_numero_facture there's nothing to infer from existing content,
+ * this is new operational metadata going forward.
+ */
+function figli_compta_ledger_update_8003() {
+  _figli_compta_ledger_create_vocabulary('flag', 'Signalement', []);
+  _figli_entity_ref_field('node', 'ligne_comptable', 'field_flag', 'Signalement', 'taxonomy_term', 'flag', FALSE, -1, TRUE);
+
+  $form_display = EntityFormDisplay::load('node.ligne_comptable.default');
+  if ($form_display && !$form_display->getComponent('field_flag')) {
+    $form_display->setComponent('field_flag', ['type' => 'entity_reference_autocomplete_tags', 'weight' => 8])->save();
+  }
+  $view_display = EntityViewDisplay::load('node.ligne_comptable.default');
+  if ($view_display && !$view_display->getComponent('field_flag')) {
+    $view_display->setComponent('field_flag', ['type' => 'entity_reference_label', 'weight' => 8])->save();
+  }
+}
diff --git a/web/modules/custom/figli_compta_ledger/js/home.js b/web/modules/custom/figli_compta_ledger/js/home.js
index 6783188..fc012ed 100644
--- a/web/modules/custom/figli_compta_ledger/js/home.js
+++ b/web/modules/custom/figli_compta_ledger/js/home.js
@@ -104,7 +104,7 @@
       '&filter[lt][condition][operator]=%3C' +
       '&filter[lt][condition][value]=' + end +
       '&filter[lt][condition][memberOf]=dateRange';
-    return API_BASE + '?include=field_repartition,field_repartition.field_compte,field_client,field_entree_liee'
+    return API_BASE + '?include=field_repartition,field_repartition.field_compte,field_client,field_entree_liee,field_flag'
       + '&page[limit]=50&sort=field_date_ligne,drupal_internal__nid&' + filter;
   }
 
@@ -147,7 +147,7 @@
   async function fetchLignesByNids(nids) {
     if (!nids.length) return { data: [], includedMap: new Map() };
     const params = new URLSearchParams();
-    params.set('include', 'field_repartition,field_repartition.field_compte,field_client,field_entree_liee');
+    params.set('include', 'field_repartition,field_repartition.field_compte,field_client,field_entree_liee,field_flag');
     params.set('filter[parNid][condition][path]', 'drupal_internal__nid');
     params.set('filter[parNid][condition][operator]', 'IN');
     nids.forEach((nid) => params.append('filter[parNid][condition][value][]', nid));
@@ -163,7 +163,7 @@
   // silently matched everything instead of narrowing the query).
   async function fetchChangedSince(tsSeconds) {
     const params = new URLSearchParams();
-    params.set('include', 'field_repartition,field_repartition.field_compte,field_client,field_entree_liee');
+    params.set('include', 'field_repartition,field_repartition.field_compte,field_client,field_entree_liee,field_flag');
     params.set('filter[changedFilter][condition][path]', 'changed');
     params.set('filter[changedFilter][condition][operator]', '>');
     params.set('filter[changedFilter][condition][value]', String(tsSeconds));
@@ -188,6 +188,22 @@
     return names.sort();
   }
 
+  // Same pagination reasoning as fetchClientNames() above -- feeds the
+  // "Signalement" column's datalist (suggestions only, doesn't restrict
+  // input: see LedgerActionsController::updateField()'s 'flag' case).
+  async function fetchFlagNames() {
+    let url = '/jsonapi/taxonomy_term/flag?sort=name&page[limit]=50';
+    const names = [];
+    while (url) {
+      const res = await fetch(url, { headers: { Accept: 'application/vnd.api+json' } });
+      if (!res.ok) throw new Error('JSON:API a répondu ' + res.status);
+      const json = await res.json();
+      names.push(...(json.data || []).map((t) => t.attributes.name).filter(Boolean));
+      url = json.links && json.links.next ? json.links.next.href : null;
+    }
+    return names.sort();
+  }
+
   async function fetchYearsList() {
     const res = await fetch('/lignes/api/annees', { headers: { Accept: 'application/json' } });
     if (!res.ok) throw new Error('/lignes/api/annees a répondu ' + res.status);
@@ -275,6 +291,7 @@
       filterType: params.get('type') ? params.get('type').split(',') : [],
       filterYear: params.get('annee') || '',
       onlyErrors: params.get('ecarts') === '1',
+      onlyFlagged: params.get('signale') === '1',
       aller: params.get('aller') || '',
     };
   }
@@ -286,6 +303,7 @@
     if (state.filterType.length) params.set('type', state.filterType.join(','));
     if (state.filterYear) params.set('annee', state.filterYear);
     if (state.onlyErrors) params.set('ecarts', '1');
+    if (state.onlyFlagged) params.set('signale', '1');
     // Redundant/ambiguous alongside an active "Année" filter -- that
     // already fully describes the year, so don't also carry a stale
     // "aller" target into the hash.
@@ -310,6 +328,11 @@
       // per linked entrée, even when there's only one or none.
       const entreeLieeRefs = (rels.field_entree_liee && rels.field_entree_liee.data) || [];
       const entreeLieeNodes = entreeLieeRefs.map((ref) => resolve(includedMap, ref)).filter(Boolean);
+      // Multi-value like field_entree_liee above -- zero, one or several
+      // free-form "signalement" tags (see LedgerActionsController::
+      // updateField()'s 'flag' case for how they're written).
+      const flagRefs = (rels.field_flag && rels.field_flag.data) || [];
+      const flagTerms = flagRefs.map((ref) => resolve(includedMap, ref)).filter(Boolean);
       const parCompte = {};
       let somme = 0;
       const repartitionRefs = (rels.field_repartition && rels.field_repartition.data) || [];
@@ -348,6 +371,8 @@
         linkable: LINKABLE_TYPES.includes(attrs.field_type_ligne),
         entreeLieeIds: entreeLieeNodes.map((n) => n.id),
         entreeLieeLabels: entreeLieeNodes.map((n) => n.attributes.title || n.id),
+        flags: flagTerms.map((t) => t.attributes.name),
+        hasFlag: flagTerms.length > 0,
       });
     }
     rows.sort((a, b) => (a.date || '').localeCompare(b.date || ''));
@@ -362,6 +387,7 @@
         rows: [],
         allComptes: ['Sandrine', 'Maud', 'Ouidade', 'Chloé', 'Bachir', 'Valentin', 'EXT.', 'EXT.WEB'],
         allClientsList: [],
+        allFlagsList: [],
         allYearsList: [],
         ouvertureEcarts: {},
         // Arrays -- both are native <select multiple>, so ctrl/cmd+click
@@ -379,6 +405,7 @@
         lastJumpYear: '',
         groupBy: 'month',
         onlyErrors: false,
+        onlyFlagged: false,
         hoverCol: null,
         filterEntreeId: null,
         // Rows fetched to fill in entrées/sorties that /lignes/api/groupe
@@ -562,6 +589,7 @@
           if (this.filterType.length && !this.filterType.includes(r.type)) return false;
           if (this.filterYear && (r.date || '').slice(0, 4) !== this.filterYear) return false;
           if (this.onlyErrors && !r.hasError) return false;
+          if (this.onlyFlagged && !r.hasFlag) return false;
           return true;
         });
       },
@@ -947,27 +975,41 @@
         return !!this.editingCell && this.editingCell.id === item.id && this.editingCell.field === field;
       },
       // Same optimistic-patch-then-close pattern as saveType() above --
-      // client/facture/libellé don't affect linkability or
+      // client/facture/libellé/flag don't affect linkability or
       // field_entree_liee, so there's nothing else to reconcile via
       // reloadWindow() here.
       async saveCell(item, field, event) {
         const newValue = event.target.value.trim();
         this.editingCell = null;
-        if (newValue === (item[field] || '')) return;
+        // field_flag is multi-value -- the row carries it as `flags`
+        // (array), not `flag`, and the input works with the comma-joined
+        // text form of it (see the 'flag' case in the template).
+        const previousValue = field === 'flag' ? item.flags.join(', ') : (item[field] || '');
+        if (newValue === previousValue) return;
         try {
           const result = await updateLigneField(item.nid, field, newValue, item.changed);
           const row = this.rows.find((r) => r.id === item.id);
           if (row) {
-            row[field] = result.value;
+            if (field === 'flag') {
+              row.flags = result.value;
+              row.hasFlag = result.value.length > 0;
+            } else {
+              row[field] = result.value;
+            }
             row.changed = result.changed;
           }
-          // A client name with no existing match gets created on the fly
-          // (server-side) rather than rejected -- reflect it in the
+          // A client/tag name with no existing match gets created on the
+          // fly (server-side) rather than rejected -- reflect it in the
           // filter dropdown/datalist immediately instead of only after a
-          // reload picks up the new taxonomy term via fetchClientNames().
+          // reload picks up the new taxonomy term via fetchClientNames()/
+          // fetchFlagNames().
           if (field === 'client' && result.value && !this.allClientsList.includes(result.value)) {
             this.allClientsList = [...this.allClientsList, result.value].sort();
           }
+          if (field === 'flag') {
+            const newNames = result.value.filter((name) => !this.allFlagsList.includes(name));
+            if (newNames.length) this.allFlagsList = [...this.allFlagsList, ...newNames].sort();
+          }
         } catch (err) {
           this.typeUpdateError = err.message;
           if (err.status === 409) this.refreshSingleRow(item.id, item.nid);
@@ -1216,7 +1258,7 @@
       // filter with only a few matches a year could search almost forever
       // without surfacing more of them.
       isFiltering() {
-        return !!(this.filterCompte.length || this.filterClient || this.filterType.length || this.onlyErrors);
+        return !!(this.filterCompte.length || this.filterClient || this.filterType.length || this.onlyErrors || this.onlyFlagged);
       },
       // Keeps extending the window (both directions) as long as a filter
       // leaves too few matching rows to fill the viewport -- otherwise
@@ -1430,6 +1472,7 @@
           filterType: this.filterType,
           filterYear: this.filterYear,
           onlyErrors: this.onlyErrors,
+          onlyFlagged: this.onlyFlagged,
           lastJumpYear: this.lastJumpYear,
         });
         const url = location.pathname + location.search + (hash ? '#' + hash : '');
@@ -1480,6 +1523,10 @@
         this.ensureScrollable();
         this.syncHash();
       },
+      onlyFlagged() {
+        this.ensureScrollable();
+        this.syncHash();
+      },
     },
     async mounted() {
       // Reproduce whatever the URL hash describes -- reload or a shared
@@ -1493,6 +1540,7 @@
       this.filterClient = hashState.filterClient;
       this.filterType = hashState.filterType;
       this.onlyErrors = hashState.onlyErrors;
+      this.onlyFlagged = hashState.onlyFlagged;
 
       if (hashState.filterYear) {
         this.filterYear = hashState.filterYear;
@@ -1517,6 +1565,7 @@
       // Independent of the row window, so the dropdowns don't shrink to
       // "whatever happens to be loaded right now".
       fetchClientNames().then((names) => { this.allClientsList = names; }).catch(() => {});
+      fetchFlagNames().then((names) => { this.allFlagsList = names; }).catch(() => {});
       fetchYearsList().then((years) => { this.allYearsList = years; }).catch(() => {});
       fetchOuvertureEcarts().then((ecarts) => { this.ouvertureEcarts = ecarts; }).catch(() => {});
       jQuery(document).on('dialog:afterclose', () => this.reloadWindow());
diff --git a/web/modules/custom/figli_compta_ledger/src/Controller/LedgerActionsController.php b/web/modules/custom/figli_compta_ledger/src/Controller/LedgerActionsController.php
index 63d3f1c..4dfcb09 100644
--- a/web/modules/custom/figli_compta_ledger/src/Controller/LedgerActionsController.php
+++ b/web/modules/custom/figli_compta_ledger/src/Controller/LedgerActionsController.php
@@ -32,6 +32,7 @@ class LedgerActionsController extends ControllerBase {
     'client' => 'field_client',
     'facture' => 'field_numero_facture',
     'libelle' => 'field_notes',
+    'flag' => 'field_flag',
   ];
 
   /**
@@ -119,8 +120,8 @@ class LedgerActionsController extends ControllerBase {
   }
 
   /**
-   * POST /lignes/{node}/champ -- change client/facture/libellé inline,
-   * for clicking directly on those cells in the table. Body:
+   * POST /lignes/{node}/champ -- change client/facture/libellé/signalement
+   * inline, for clicking directly on those cells in the table. Body:
    * {"field": "client", "value": "EPAU / POPSU"}. An empty value clears
    * the field (e.g. a structural charge with no client).
    */
@@ -147,35 +148,26 @@ class LedgerActionsController extends ControllerBase {
     }
 
     if ($field === 'client') {
-      if ($value === '') {
-        $node->set('field_client', NULL);
-      }
-      else {
-        $terms = $this->entityTypeManager()->getStorage('taxonomy_term')
-          ->loadByProperties(['vid' => 'client', 'name' => $value]);
-        if ($terms) {
-          $node->set('field_client', reset($terms)->id());
-        }
-        else {
-          // No existing term matches -- create one rather than reject,
-          // same "autocreate" behavior as a standard Drupal entity
-          // reference autocomplete widget. The front-end's datalist only
-          // *suggests* known names, it doesn't restrict input to them.
-          $term = Term::create(['vid' => 'client', 'name' => $value]);
-          $term->save();
-          $node->set('field_client', $term->id());
-        }
-      }
+      $node->set('field_client', $value === '' ? NULL : $this->findOrCreateTerm('client', $value)->id());
+    }
+    elseif ($field === 'flag') {
+      // Comma-separated like a native "tags" widget -- one or more
+      // free-form tags, each matched against an existing term or
+      // auto-created (same reasoning as client above). Order/dedup
+      // doesn't matter here, this is a display list, not a répartition.
+      $names = array_unique(array_filter(array_map('trim', explode(',', $value)), fn ($n) => $n !== ''));
+      $tids = array_map(fn ($name) => $this->findOrCreateTerm('flag', $name)->id(), $names);
+      $node->set('field_flag', $tids);
     }
     else {
       $node->set($fieldName, $value !== '' ? $value : NULL);
     }
 
-    // Same reasoning as updateType() above: only client/facture/libellé
-    // changes here, montant_ht and field_repartition are untouched, so
-    // skipping the répartition check for this save can never introduce a
-    // mismatch -- it can only leave a pre-existing historical one exactly
-    // as it was.
+    // Same reasoning as updateType() above: only client/facture/libellé/
+    // signalement changes here, montant_ht and field_repartition are
+    // untouched, so skipping the répartition check for this save can
+    // never introduce a mismatch -- it can only leave a pre-existing
+    // historical one exactly as it was.
     \Drupal::state()->set('figli_compta_ledger.skip_validation', TRUE);
     try {
       $node->save();
@@ -187,9 +179,16 @@ class LedgerActionsController extends ControllerBase {
       \Drupal::state()->delete('figli_compta_ledger.skip_validation');
     }
 
-    $newValue = $field === 'client'
-      ? ($node->get('field_client')->entity ? $node->get('field_client')->entity->label() : NULL)
-      : $node->get($fieldName)->value;
+    if ($field === 'client') {
+      $newValue = $node->get('field_client')->entity ? $node->get('field_client')->entity->label() : NULL;
+    }
+    elseif ($field === 'flag') {
+      $newValue = array_map(fn ($item) => $item->entity ? $item->entity->label() : NULL, iterator_to_array($node->get('field_flag')));
+      $newValue = array_values(array_filter($newValue));
+    }
+    else {
+      $newValue = $node->get($fieldName)->value;
+    }
 
     return new JsonResponse([
       'success' => TRUE,
@@ -199,6 +198,24 @@ class LedgerActionsController extends ControllerBase {
     ]);
   }
 
+  /**
+   * Finds an existing term by name in $vid, or creates one -- shared by
+   * the client and flag (signalement) inline-edit cases above. Same
+   * "autocreate" behavior as a standard Drupal entity reference
+   * autocomplete/tags widget: the front-end's datalist only *suggests*
+   * known names, it doesn't restrict input to them.
+   */
+  private function findOrCreateTerm(string $vid, string $name): Term {
+    $terms = $this->entityTypeManager()->getStorage('taxonomy_term')
+      ->loadByProperties(['vid' => $vid, 'name' => $name]);
+    if ($terms) {
+      return reset($terms);
+    }
+    $term = Term::create(['vid' => $vid, 'name' => $name]);
+    $term->save();
+    return $term;
+  }
+
   /**
    * Optimistic-locking guard shared by both endpoints above: the
    * frontend sends the `changed` timestamp of the row it last saw (see
diff --git a/web/modules/custom/figli_compta_ledger/templates/figli-compta-home.html.twig b/web/modules/custom/figli_compta_ledger/templates/figli-compta-home.html.twig
index 25300a7..56ce587 100644
--- a/web/modules/custom/figli_compta_ledger/templates/figli-compta-home.html.twig
+++ b/web/modules/custom/figli_compta_ledger/templates/figli-compta-home.html.twig
@@ -87,6 +87,14 @@
       <input type="checkbox" v-model="onlyErrors" /> Écarts uniquement
     </label>
 
+    <label class="figli-checkbox">
+      <input type="checkbox" v-model="onlyFlagged" /> Signalées uniquement
+    </label>
+
+    <datalist id="figli-flag-datalist">
+      <option v-for="f in allFlagsList" :key="f" :value="f"></option>
+    </datalist>
+
     <span class="figli-count" v-if="!loading">{{ filteredRows.length }} / {{ rows.length }} lignes chargées{{ errorCount ? ' — ' + errorCount + ' avec écart' : '' }}</span>
   </div>
 
@@ -105,6 +113,7 @@
           <th>Type</th>
           <th>Facture</th>
           <th>Libellé / Détail</th>
+          <th>Signalement</th>
           <th class="amount">Montant HT</th>
           <th class="amount">Montant TTC</th>
           <th v-for="c in allComptes" :key="c" class="amount compte-col">{{ c }}</th>
@@ -113,15 +122,15 @@
       </thead>
       <tbody>
         <tr ref="topSentinel" class="figli-sentinel-row">
-          <td :colspan="7 + allComptes.length + 3">
+          <td :colspan="8 + allComptes.length + 3">
             <span v-if="loadingOlder">Chargement des mois précédents…</span>
           </td>
         </tr>
         <template v-for="item in groupedRows" :key="item.key">
           <tr v-if="item.isGroup" class="figli-group-row" :data-year="item.year">
-            <td :colspan="7 + allComptes.length + 3">{{ item.label }} <span class="figli-note">({{ item.count }} lignes)</span></td>
+            <td :colspan="8 + allComptes.length + 3">{{ item.label }} <span class="figli-note">({{ item.count }} lignes)</span></td>
           </tr>
-          <tr v-else :class="{'figli-error-row': item.hasError}" :data-year="item.date ? item.date.slice(0, 4) : null">
+          <tr v-else :class="{'figli-error-row': item.hasError, 'figli-flag-row': item.hasFlag}" :data-year="item.date ? item.date.slice(0, 4) : null">
             <td class="actions-col">
               <button
                 v-if="item.linkable"
@@ -225,6 +234,23 @@
                 >{{ linkStatus(item).kind === 'ok' ? '' : '⚠ ' }}{{ linkStatusLabel(linkStatus(item)) }}</span>
               </template>
             </td>
+            <td class="figli-flag-cell">
+              <input
+                v-if="isEditingCell(item, 'flag')"
+                v-focus
+                type="text"
+                class="figli-inline-input"
+                list="figli-flag-datalist"
+                :value="item.flags.join(', ')"
+                @change="saveCell(item, 'flag', $event)"
+                @blur="editingCell = null"
+                @keyup.enter="$event.target.blur()"
+              />
+              <span v-else class="figli-editable-cell" title="Cliquer pour signaler un problème" @click="startEditCell(item, 'flag')">
+                <template v-if="item.flags.length"><span v-for="f in item.flags" :key="f" class="figli-flag-badge">{{ f }}</span></template>
+                <template v-else>—</template>
+              </span>
+            </td>
             <td class="amount" :class="montantClass(item.montant_ht)">{{ formatEur(item.montant_ht) }}</td>
             <td class="amount">{{ formatEur(item.montant_ttc) }}</td>
             <td v-for="c in allComptes" :key="c" class="amount compte-col">{{ item.parCompte[c] !== undefined ? formatEur(item.parCompte[c]) : '' }}</td>
@@ -232,7 +258,7 @@
           </tr>
         </template>
         <tr ref="bottomSentinel" class="figli-sentinel-row">
-          <td :colspan="7 + allComptes.length + 3">
+          <td :colspan="8 + allComptes.length + 3">
             <span v-if="loadingNewer">Chargement des mois suivants…</span>
           </td>
         </tr>
@@ -241,7 +267,7 @@
         <tr class="figli-totals-row">
           <td class="actions-col"></td>
           <td class="actions-col"></td>
-          <td colspan="5">
+          <td colspan="6">
             Solde {{ currentYear || '…' }} (créditeur / débiteur)
             <span v-if="currentYearLoading" class="figli-note">chargement…</span>
           </td>