feat: expose dossier timeline and exceptions API

site/routes/api_bp.py

@@ -1,6 +1,11 @@
 """API blueprint — groups, documents, supplements, sync, cleanup, spec-current, chat."""
+import json
+from datetime import date
 from flask import Blueprint, request, jsonify
 from db import documents, supplements, spec_current
+from db import dossiers as db_dossiers
+from db import exceptions as db_exceptions
+from db import timeline as db_timeline
 from db.connection import execute, query, transaction
 from services.grouping import group_documents, apply_groups
 from config import LLM_URL, LLM_KEY, LLM_MODEL
@@ -9,6 +14,56 @@ import httpx
 api_bp = Blueprint("api", __name__)
 
 
+# ── Contract timeline and exceptions ────────────────────────────
+
+@api_bp.route("/api/dossiers/<dossier_id>/timeline")
+def api_dossier_timeline(dossier_id):
+    """Вернуть полную историю и активный срез обязательств dossier."""
+    dossier = db_dossiers.get_dossier(dossier_id)
+    if not dossier:
+        return jsonify(ok=False, error="dossier not found"), 404
+
+    as_of = request.args.get("as_of") or date.today().isoformat()
+    try:
+        as_of = date.fromisoformat(as_of).isoformat()
+    except ValueError:
+        return jsonify(ok=False, error="as_of must be YYYY-MM-DD"), 400
+
+    history = db_timeline.list_timeline(dossier_id)
+    active = db_timeline.list_timeline(dossier_id, as_of)
+    for interval in history + active:
+        try:
+            interval["config_params"] = json.loads(interval.get("config_params_json") or "{}")
+        except (TypeError, json.JSONDecodeError):
+            interval["config_params"] = {}
+    return jsonify(
+        ok=True,
+        dossier=dossier,
+        as_of=as_of,
+        timeline=history,
+        active=active,
+        exceptions=db_exceptions.list_exceptions(dossier_id=dossier_id, status="OPEN"),
+    )
+
+
+@api_bp.route("/api/exceptions")
+def api_exceptions():
+    """Вернуть исключения только по явно заданной области batch или dossier."""
+    batch_id = request.args.get("batch_id")
+    dossier_id = request.args.get("dossier_id")
+    status = request.args.get("status")
+    if not batch_id and not dossier_id:
+        return jsonify(ok=False, error="batch_id or dossier_id required"), 400
+    if status and status not in {"OPEN", "RESOLVED"}:
+        return jsonify(ok=False, error="status must be OPEN or RESOLVED"), 400
+    return jsonify(
+        ok=True,
+        exceptions=db_exceptions.list_exceptions(
+            batch_id=batch_id, dossier_id=dossier_id, status=status,
+        ),
+    )
+
+
 # ── Supplements ──────────────────────────────────────────────────
 
 @api_bp.route("/api/supplements")