feat(r5.3): écrans IA — assistant web, corpus administrable, suggestions OT/mobile

- Contrat (76 opérations) : Document expose inCorpus/indexedAt/chunkCount,
  PATCH /documents/{id}/corpus (ASSETS.edit), POST /assistant/reindex
  (bilan chiffré) ; ci-contract vérifie désormais aussi le client mobile.
- Web : page /assistant (chat sourcé — extraits exacts cités, Ouvrir vers
  PDF authentifié ou fiche OT, avertissement permanent ; refus honnête
  chiffré avec action utile) ; Bibliothèque = corpus (bandeau 09-08,
  statut d'indexation par document, interrupteur d'exclusion PDF,
  Réindexer tout) ; fiche OT : « Décrire pour suggérer » (Appliquer =
  geste humain, liseré « suggéré » retiré au choix manuel).
- Mobile : chips de suggestion dans la clôture (un appui = un champ
  pré-rempli, « réseau requis » hors-ligne — la file R4 n'en dépend pas).
- apps/ai : seuils AI_SEUIL_* configurables par env (CI + calibrage).
- CI e2e : service siop2-ai (embeddeur déterministe, seuils calibrés sur
  mesures : match 0,66 vs bruit 0,11) + parcours R5 Playwright (PDF généré
  xref valide → réindexation → réponse sourcée → refus → suggestion).
- Vérifié : 16/16 Playwright, 78 tests API, 23 pytest, 17 jest-expo ;
  chaîne réelle au vrai modèle ONNX (web 7/7, mobile Expo web 6/6).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/openapi.json

@@ -1096,6 +1096,56 @@
         }
       }
     },
+    "/documents/{id}/corpus": {
+      "patch": {
+        "operationId": "updateDocumentCorpus",
+        "summary": "Inclure/exclure du corpus IA (D3 — réversible, effectif à la prochaine réindexation)",
+        "tags": [
+          "documents"
+        ],
+        "parameters": [
+          {
+            "name": "id",
+            "in": "path",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "format": "uuid"
+            }
+          }
+        ],
+        "security": [
+          {
+            "bearerAuth": []
+          }
+        ],
+        "requestBody": {
+          "required": true,
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/DocumentCorpusUpdate"
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "Document mis à jour",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/Document"
+                }
+              }
+            }
+          },
+          "404": {
+            "description": "Inconnu"
+          }
+        }
+      }
+    },
     "/documents/{id}": {
       "delete": {
         "operationId": "deleteDocument",
@@ -1243,6 +1293,35 @@
         }
       }
     },
+    "/assistant/reindex": {
+      "post": {
+        "operationId": "reindexAssistant",
+        "summary": "Réindexer le corpus (bibliothèque PDF + bilans clôturés, anonymisés à l’ingestion — D4)",
+        "tags": [
+          "assistant"
+        ],
+        "security": [
+          {
+            "bearerAuth": []
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Bilan d’indexation",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ReindexResult"
+                }
+              }
+            }
+          },
+          "503": {
+            "description": "Service IA indisponible"
+          }
+        }
+      }
+    },
     "/search": {
       "get": {
         "operationId": "globalSearch",
@@ -4807,6 +4886,26 @@
                   "type": "string",
                   "format": "date-time",
                   "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"
+                },
+                "inCorpus": {
+                  "type": "boolean"
+                },
+                "indexedAt": {
+                  "anyOf": [
+                    {
+                      "type": "string",
+                      "format": "date-time",
+                      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ]
+                },
+                "chunkCount": {
+                  "type": "integer",
+                  "minimum": -9007199254740991,
+                  "maximum": 9007199254740991
                 }
               },
               "required": [
@@ -4818,7 +4917,10 @@
                 "assetReference",
                 "workOrderReference",
                 "uploadedByName",
-                "createdAt"
+                "createdAt",
+                "inCorpus",
+                "indexedAt",
+                "chunkCount"
               ],
               "additionalProperties": false
             }
@@ -4892,6 +4994,26 @@
             "type": "string",
             "format": "date-time",
             "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"
+          },
+          "inCorpus": {
+            "type": "boolean"
+          },
+          "indexedAt": {
+            "anyOf": [
+              {
+                "type": "string",
+                "format": "date-time",
+                "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "chunkCount": {
+            "type": "integer",
+            "minimum": -9007199254740991,
+            "maximum": 9007199254740991
           }
         },
         "required": [
@@ -4903,7 +5025,23 @@
           "assetReference",
           "workOrderReference",
           "uploadedByName",
-          "createdAt"
+          "createdAt",
+          "inCorpus",
+          "indexedAt",
+          "chunkCount"
+        ],
+        "additionalProperties": false
+      },
+      "DocumentCorpusUpdate": {
+        "$schema": "https://json-schema.org/draft/2020-12/schema",
+        "type": "object",
+        "properties": {
+          "inCorpus": {
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "inCorpus"
         ],
         "additionalProperties": false
       },
@@ -5256,6 +5394,39 @@
         ],
         "additionalProperties": false
       },
+      "ReindexResult": {
+        "$schema": "https://json-schema.org/draft/2020-12/schema",
+        "type": "object",
+        "properties": {
+          "documentsIndexed": {
+            "type": "integer",
+            "minimum": -9007199254740991,
+            "maximum": 9007199254740991
+          },
+          "documentsSkipped": {
+            "type": "integer",
+            "minimum": -9007199254740991,
+            "maximum": 9007199254740991
+          },
+          "reportsIndexed": {
+            "type": "integer",
+            "minimum": -9007199254740991,
+            "maximum": 9007199254740991
+          },
+          "chunks": {
+            "type": "integer",
+            "minimum": -9007199254740991,
+            "maximum": 9007199254740991
+          }
+        },
+        "required": [
+          "documentsIndexed",
+          "documentsSkipped",
+          "reportsIndexed",
+          "chunks"
+        ],
+        "additionalProperties": false
+      },
       "SearchResponse": {
         "$schema": "https://json-schema.org/draft/2020-12/schema",
         "type": "object",