From 6e2c91726995f96600b0cd0088ac96dd49e963ec Mon Sep 17 00:00:00 2001
From: TronoSfera <119615520+TronoSfera@users.noreply.github.com>
Date: Tue, 17 Mar 2026 09:07:54 +0300
Subject: [PATCH] fix speed up 03

---
 .../0035_add_workspace_perf_indexes.py        |  45 +++++
 app/api/admin/requests_modules/service.py     |  48 +++--
 app/api/admin/requests_modules/status_flow.py |  13 +-
 app/api/admin/uploads.py                      |  77 ++++++--
 app/api/public/featured_staff.py              |  43 ++++-
 app/models/attachment.py                      |   5 +-
 app/models/invoice.py                         |   5 +-
 app/models/message.py                         |   5 +-
 app/services/chat_secure_service.py           |   7 +-
 app/services/notifications.py                 |  38 ++--
 app/web/admin.js                              | 179 +++++++++++++++---
 app/web/admin.jsx                             |  34 +++-
 app/web/admin/shared/utils.js                 |  11 +-
 context/19_performance_tracking_2026-03-16.md |   8 +
 tests/test_featured_staff_public.py           |   2 +-
 tests/test_migrations.py                      |  10 +-
 tests/test_uploads_s3.py                      |  10 +-
 17 files changed, 439 insertions(+), 101 deletions(-)
 create mode 100644 alembic/versions/0035_add_workspace_perf_indexes.py

diff --git a/alembic/versions/0035_add_workspace_perf_indexes.py b/alembic/versions/0035_add_workspace_perf_indexes.py
new file mode 100644
index 0000000..83bc63d
--- /dev/null
+++ b/alembic/versions/0035_add_workspace_perf_indexes.py
@@ -0,0 +1,45 @@
+"""add composite indexes for request workspace payloads
+
+Revision ID: 0035_workspace_perf_indexes
+Revises: 0034_request_assigned_lawyer_idx
+Create Date: 2026-03-17
+"""
+
+from __future__ import annotations
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "0035_workspace_perf_indexes"
+down_revision = "0034_request_assigned_lawyer_idx"
+branch_labels = None
+depends_on = None
+
+
+def _has_index(inspector: sa.Inspector, table: str, index_name: str) -> bool:
+    return any(str(idx.get("name")) == index_name for idx in inspector.get_indexes(table))
+
+
+def upgrade() -> None:
+    bind = op.get_bind()
+    inspector = sa.inspect(bind)
+
+    if not _has_index(inspector, "messages", "ix_messages_request_created_id"):
+        op.create_index("ix_messages_request_created_id", "messages", ["request_id", "created_at", "id"], unique=False)
+    if not _has_index(inspector, "attachments", "ix_attachments_request_created_id"):
+        op.create_index("ix_attachments_request_created_id", "attachments", ["request_id", "created_at", "id"], unique=False)
+    if not _has_index(inspector, "invoices", "ix_invoices_request_issued_id"):
+        op.create_index("ix_invoices_request_issued_id", "invoices", ["request_id", "issued_at", "id"], unique=False)
+
+
+def downgrade() -> None:
+    bind = op.get_bind()
+    inspector = sa.inspect(bind)
+
+    if _has_index(inspector, "invoices", "ix_invoices_request_issued_id"):
+        op.drop_index("ix_invoices_request_issued_id", table_name="invoices")
+    if _has_index(inspector, "attachments", "ix_attachments_request_created_id"):
+        op.drop_index("ix_attachments_request_created_id", table_name="attachments")
+    if _has_index(inspector, "messages", "ix_messages_request_created_id"):
+        op.drop_index("ix_messages_request_created_id", table_name="messages")
diff --git a/app/api/admin/requests_modules/service.py b/app/api/admin/requests_modules/service.py
index 1f4a931..4c61a8b 100644
--- a/app/api/admin/requests_modules/service.py
+++ b/app/api/admin/requests_modules/service.py
@@ -365,21 +365,11 @@ def get_request_service(request_id: str, db: Session, admin: dict) -> dict[str,
     if not req:
         raise HTTPException(status_code=404, detail="Заявка не найдена")
     ensure_lawyer_can_view_request_or_403(admin, req)
-    changed = False
-    if str(admin.get("role") or "").upper() == "LAWYER" and clear_unread_for_lawyer(req):
-        changed = True
-        db.add(req)
-    read_count = mark_admin_notifications_read(
-        db,
-        admin_user_id=admin.get("sub"),
-        request_id=req.id,
-        responsible=str(admin.get("email") or "").strip() or "Администратор системы",
-    )
-    if read_count:
-        changed = True
-    if changed:
-        db.commit()
-        db.refresh(req)
+    _apply_request_open_side_effects(db, req, admin, mark_chat_read=False)
+    return _serialize_request_row(req)
+
+
+def _serialize_request_row(req: Request) -> dict[str, Any]:
     return {
         "id": str(req.id),
         "track_number": req.track_number,
@@ -407,6 +397,27 @@ def get_request_service(request_id: str, db: Session, admin: dict) -> dict[str,
     }
 
 
+def _apply_request_open_side_effects(db: Session, req: Request, admin: dict, *, mark_chat_read: bool) -> None:
+    changed = False
+    if str(admin.get("role") or "").upper() == "LAWYER" and clear_unread_for_lawyer(req):
+        changed = True
+        db.add(req)
+    read_count = mark_admin_notifications_read(
+        db,
+        admin_user_id=admin.get("sub"),
+        request_id=req.id,
+        responsible=str(admin.get("email") or "").strip() or "Администратор системы",
+    )
+    if read_count:
+        changed = True
+    if mark_chat_read and mark_messages_read_for_staff(db, request_id=req.id, commit=False):
+        changed = True
+    if changed:
+        db.commit()
+        if str(admin.get("role") or "").upper() == "LAWYER":
+            db.refresh(req)
+
+
 def _serialize_request_attachment(row: Attachment) -> dict[str, Any]:
     return {
         "id": str(row.id),
@@ -449,13 +460,14 @@ def _serialize_request_invoice(row: Invoice) -> dict[str, Any]:
 
 
 def get_request_workspace_service(request_id: str, db: Session, admin: dict) -> dict[str, Any]:
-    request_payload = get_request_service(request_id, db, admin)
     request_uuid = request_uuid_or_400(request_id)
     req = db.get(Request, request_uuid)
     if req is None:
         raise HTTPException(status_code=404, detail="Заявка не найдена")
+    ensure_lawyer_can_view_request_or_403(admin, req)
 
-    mark_messages_read_for_staff(db, request_id=req.id)
+    _apply_request_open_side_effects(db, req, admin, mark_chat_read=True)
+    request_payload = _serialize_request_row(req)
     message_rows, messages_total, messages_has_more, messages_loaded_count = list_messages_for_request_window(
         db,
         req.id,
@@ -501,7 +513,7 @@ def get_request_workspace_service(request_id: str, db: Session, admin: dict) ->
             "paid_total": paid_total,
             "last_paid_at": latest_paid_at.isoformat() if latest_paid_at else request_payload.get("paid_at"),
         },
-        "status_route": get_request_status_route_service(request_id, db, admin),
+        "status_route": get_request_status_route_service(request_id, db, admin, request_row=req),
     }
 
 
diff --git a/app/api/admin/requests_modules/status_flow.py b/app/api/admin/requests_modules/status_flow.py
index fe6c456..b9cff4e 100644
--- a/app/api/admin/requests_modules/status_flow.py
+++ b/app/api/admin/requests_modules/status_flow.py
@@ -213,12 +213,15 @@ def get_request_status_route_service(
     request_id: str,
     db: Session,
     admin: dict,
+    request_row: Request | None = None,
 ) -> dict[str, Any]:
-    request_uuid = request_uuid_or_400(request_id)
-    req = db.get(Request, request_uuid)
-    if not req:
-        raise HTTPException(status_code=404, detail="Заявка не найдена")
-    ensure_lawyer_can_view_request_or_403(admin, req)
+    req = request_row
+    if req is None:
+        request_uuid = request_uuid_or_400(request_id)
+        req = db.get(Request, request_uuid)
+        if not req:
+            raise HTTPException(status_code=404, detail="Заявка не найдена")
+        ensure_lawyer_can_view_request_or_403(admin, req)
 
     topic_code = str(req.topic_code or "").strip()
     current_status = str(req.status_code or "").strip()
diff --git a/app/api/admin/uploads.py b/app/api/admin/uploads.py
index 7965e47..f4401ba 100644
--- a/app/api/admin/uploads.py
+++ b/app/api/admin/uploads.py
@@ -34,6 +34,7 @@ from app.services.s3_storage import build_object_key, get_s3_storage
 router = APIRouter()
 
 AVATAR_MAX_SIZE_PX = 512
+AVATAR_THUMB_MAX_SIZE_PX = 160
 AVATAR_WEBP_QUALITY = 80
 _AVATAR_RESAMPLE = getattr(getattr(Image, "Resampling", Image), "LANCZOS", 1)
 
@@ -109,6 +110,10 @@ def _read_object_bytes_or_400(storage, key: str) -> bytes:
         obj = storage.get_object(key)
     except ClientError:
         raise HTTPException(status_code=400, detail="Файл не найден в хранилище")
+    return _read_object_body_or_400(obj)
+
+
+def _read_object_body_or_400(obj: dict) -> bytes:
     body = obj.get("Body")
     if hasattr(body, "read"):
         data = body.read()
@@ -143,14 +148,27 @@ def _write_object_bytes_or_500(storage, *, key: str, content: bytes, mime_type:
     raise HTTPException(status_code=500, detail="Хранилище не поддерживает запись объектов")
 
 
-def _normalize_avatar_to_webp_or_400(storage, *, key: str) -> tuple[int, str]:
-    source = _read_object_bytes_or_400(storage, key)
+def _avatar_variant_key(key: str, variant: str) -> str:
+    raw = str(key or "").strip()
+    if not raw:
+        raise HTTPException(status_code=400, detail="Некорректный ключ аватара")
+    normalized_variant = str(variant or "").strip().lower()
+    if normalized_variant != "thumb":
+        raise HTTPException(status_code=400, detail="Неподдерживаемый вариант аватара")
+    prefix, _, file_name = raw.rpartition("/")
+    if not prefix or not file_name:
+        raise HTTPException(status_code=400, detail="Некорректный ключ аватара")
+    base_name = file_name.rsplit(".", 1)[0] if "." in file_name else file_name
+    return prefix + "/" + base_name + "__thumb.webp"
+
+
+def _render_avatar_to_webp_or_400(source: bytes, *, max_size_px: int) -> bytes:
     try:
         with Image.open(io.BytesIO(source)) as image:
             image = ImageOps.exif_transpose(image)
             image.load()
-            if max(image.size) > AVATAR_MAX_SIZE_PX:
-                image.thumbnail((AVATAR_MAX_SIZE_PX, AVATAR_MAX_SIZE_PX), resample=_AVATAR_RESAMPLE)
+            if max(image.size) > max_size_px:
+                image.thumbnail((max_size_px, max_size_px), resample=_AVATAR_RESAMPLE)
             if image.mode != "RGB":
                 image = image.convert("RGB")
             out = io.BytesIO()
@@ -162,8 +180,15 @@ def _normalize_avatar_to_webp_or_400(storage, *, key: str) -> tuple[int, str]:
         raise HTTPException(status_code=400, detail="Не удалось обработать изображение аватара")
     if not optimized:
         raise HTTPException(status_code=400, detail="Не удалось обработать изображение аватара")
-    _write_object_bytes_or_500(storage, key=key, content=optimized, mime_type="image/webp")
-    return int(len(optimized)), "image/webp"
+    return optimized
+
+
+def _write_avatar_variant_or_400(storage, *, source_key: str, variant: str, max_size_px: int) -> tuple[str, int, str]:
+    source = _read_object_bytes_or_400(storage, source_key)
+    optimized = _render_avatar_to_webp_or_400(source, max_size_px=max_size_px)
+    target_key = _avatar_variant_key(source_key, variant)
+    _write_object_bytes_or_500(storage, key=target_key, content=optimized, mime_type="image/webp")
+    return target_key, int(len(optimized)), "image/webp"
 
 
 def _serialize_attachment(row: Attachment) -> dict:
@@ -401,7 +426,12 @@ def upload_complete(
             if user is None:
                 raise HTTPException(status_code=404, detail="Пользователь не найден")
             _ensure_object_key_prefix_or_400(payload.key, f"avatars/{user.id}/")
-            optimized_size, optimized_mime = _normalize_avatar_to_webp_or_400(storage, key=payload.key)
+            thumb_key, optimized_size, optimized_mime = _write_avatar_variant_or_400(
+                storage,
+                source_key=payload.key,
+                variant="thumb",
+                max_size_px=AVATAR_THUMB_MAX_SIZE_PX,
+            )
             user.avatar_url = f"s3://{payload.key}"
             user.responsible = responsible
             db.add(user)
@@ -415,10 +445,12 @@ def upload_complete(
                 allowed=True,
                 object_key=payload.key,
                 details={
-                    "mime_type": optimized_mime,
-                    "size_bytes": int(optimized_size),
                     "source_mime_type": payload.mime_type,
                     "source_size_bytes": int(actual_size),
+                    "variant": "thumb",
+                    "variant_key": thumb_key,
+                    "variant_mime_type": optimized_mime,
+                    "variant_size_bytes": int(optimized_size),
                 },
                 responsible=responsible,
             )
@@ -466,9 +498,11 @@ def get_object_proxy(
     object_key: str,
     http_request: FastapiRequest,
     token: str = Query(...),
+    variant: str | None = Query(None),
     db: Session = Depends(get_db),
 ):
     key = str(object_key or "").strip()
+    requested_variant = str(variant or "").strip().lower()
     scope = "UNKNOWN"
     scoped_uuid: uuid.UUID | None = None
     actor_role = "UNKNOWN"
@@ -521,10 +555,25 @@ def get_object_proxy(
                 raise HTTPException(status_code=404, detail="Файл не найден")
             ensure_attachment_download_allowed_or_4xx(attachment)
 
-        try:
-            obj = get_s3_storage().get_object(key)
-        except ClientError:
-            raise HTTPException(status_code=404, detail="Файл не найден")
+        storage = get_s3_storage()
+        if scope == "avatars" and requested_variant == "thumb":
+            thumb_key = _avatar_variant_key(key, "thumb")
+            try:
+                obj = storage.get_object(thumb_key)
+            except ClientError:
+                try:
+                    source_obj = storage.get_object(key)
+                except ClientError:
+                    raise HTTPException(status_code=404, detail="Файл не найден")
+                source = _read_object_body_or_400(source_obj)
+                optimized = _render_avatar_to_webp_or_400(source, max_size_px=AVATAR_THUMB_MAX_SIZE_PX)
+                _write_object_bytes_or_500(storage, key=thumb_key, content=optimized, mime_type="image/webp")
+                obj = storage.get_object(thumb_key)
+        else:
+            try:
+                obj = storage.get_object(key)
+            except ClientError:
+                raise HTTPException(status_code=404, detail="Файл не найден")
 
         record_file_security_event(
             db,
@@ -536,7 +585,7 @@ def get_object_proxy(
             allowed=True,
             object_key=key,
             request_id=scoped_uuid if scope == "requests" else None,
-            details={},
+            details={"variant": requested_variant or None},
             responsible=responsible,
             persist_now=True,
         )
diff --git a/app/api/public/featured_staff.py b/app/api/public/featured_staff.py
index 32b51f4..629aafd 100644
--- a/app/api/public/featured_staff.py
+++ b/app/api/public/featured_staff.py
@@ -13,12 +13,23 @@ from app.models.admin_user import AdminUser
 from app.models.landing_featured_staff import LandingFeaturedStaff
 from app.models.topic import Topic
 from app.services.s3_storage import get_s3_storage
+from app.api.admin.uploads import (
+    AVATAR_THUMB_MAX_SIZE_PX,
+    _avatar_variant_key,
+    _read_object_body_or_400,
+    _render_avatar_to_webp_or_400,
+    _write_object_bytes_or_500,
+)
 
 router = APIRouter()
 
 
-def _featured_avatar_proxy_path(admin_user_id: str) -> str:
-    return "/api/public/featured-staff/avatar/" + str(admin_user_id)
+def _featured_avatar_proxy_path(admin_user_id: str, variant: str | None = "thumb") -> str:
+    path = "/api/public/featured-staff/avatar/" + str(admin_user_id)
+    normalized_variant = str(variant or "").strip().lower()
+    if normalized_variant:
+        return path + "?variant=" + normalized_variant
+    return path
 
 
 @router.get("")
@@ -58,7 +69,7 @@ def list_featured_staff(
         raw_avatar_url = str(user.avatar_url or "").strip()
         avatar_url = raw_avatar_url
         if raw_avatar_url.startswith("s3://"):
-            avatar_url = _featured_avatar_proxy_path(str(user.id))
+            avatar_url = _featured_avatar_proxy_path(str(user.id), variant="thumb")
         result.append(
             {
                 "id": str(slot.id),
@@ -80,6 +91,7 @@ def list_featured_staff(
 @router.get("/avatar/{admin_user_id}")
 def get_featured_staff_avatar(
     admin_user_id: str,
+    variant: str | None = Query("thumb"),
     db: Session = Depends(get_db),
 ):
     try:
@@ -110,10 +122,31 @@ def get_featured_staff_avatar(
     if not key.startswith("avatars/" + str(user_uuid) + "/"):
         raise HTTPException(status_code=404, detail="Аватар не найден")
 
+    target_key = key
+    if str(variant or "").strip().lower() == "thumb":
+        try:
+            target_key = _avatar_variant_key(key, "thumb")
+        except HTTPException:
+            target_key = key
+
+    storage = get_s3_storage()
     try:
-        obj = get_s3_storage().get_object(key)
+        obj = storage.get_object(target_key)
     except ClientError:
-        raise HTTPException(status_code=404, detail="Аватар не найден")
+        if target_key != key:
+            try:
+                original_obj = storage.get_object(key)
+            except ClientError:
+                raise HTTPException(status_code=404, detail="Аватар не найден")
+            try:
+                source = _read_object_body_or_400(original_obj)
+                optimized = _render_avatar_to_webp_or_400(source, max_size_px=AVATAR_THUMB_MAX_SIZE_PX)
+                _write_object_bytes_or_500(storage, key=target_key, content=optimized, mime_type="image/webp")
+                obj = storage.get_object(target_key)
+            except HTTPException:
+                obj = original_obj
+        else:
+            raise HTTPException(status_code=404, detail="Аватар не найден")
 
     body = obj.get("Body")
     if body is None or not hasattr(body, "iter_chunks"):
diff --git a/app/models/attachment.py b/app/models/attachment.py
index 88c5643..6e7d07f 100644
--- a/app/models/attachment.py
+++ b/app/models/attachment.py
@@ -1,7 +1,7 @@
 import uuid
 from datetime import datetime
 
-from sqlalchemy import String, Integer, Boolean, DateTime
+from sqlalchemy import String, Integer, Boolean, DateTime, Index
 from sqlalchemy.orm import Mapped, mapped_column
 from sqlalchemy.dialects.postgresql import UUID
 from app.db.session import Base
@@ -10,6 +10,9 @@ from app.models.common import UUIDMixin, TimestampMixin
 
 class Attachment(Base, UUIDMixin, TimestampMixin):
     __tablename__ = "attachments"
+    __table_args__ = (
+        Index("ix_attachments_request_created_id", "request_id", "created_at", "id"),
+    )
     request_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), index=True, nullable=False)
     message_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), index=True, nullable=True)
     file_name: Mapped[str] = mapped_column(String(300), nullable=False)
diff --git a/app/models/invoice.py b/app/models/invoice.py
index ec1a72f..b6cdecc 100644
--- a/app/models/invoice.py
+++ b/app/models/invoice.py
@@ -1,7 +1,7 @@
 import uuid
 from datetime import datetime
 
-from sqlalchemy import DateTime, Numeric, String, Text
+from sqlalchemy import DateTime, Index, Numeric, String, Text
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import Mapped, mapped_column
 
@@ -11,6 +11,9 @@ from app.models.common import TimestampMixin, UUIDMixin
 
 class Invoice(Base, UUIDMixin, TimestampMixin):
     __tablename__ = "invoices"
+    __table_args__ = (
+        Index("ix_invoices_request_issued_id", "request_id", "issued_at", "id"),
+    )
 
     request_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), index=True, nullable=False)
     client_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), index=True, nullable=True)
diff --git a/app/models/message.py b/app/models/message.py
index a2a456d..8bc2a6f 100644
--- a/app/models/message.py
+++ b/app/models/message.py
@@ -1,7 +1,7 @@
 import uuid
 from datetime import datetime
 
-from sqlalchemy import String, Boolean, DateTime
+from sqlalchemy import String, Boolean, DateTime, Index
 from sqlalchemy.orm import Mapped, mapped_column
 from sqlalchemy.dialects.postgresql import UUID
 from app.db.session import Base
@@ -10,6 +10,9 @@ from app.models.common import UUIDMixin, TimestampMixin
 
 class Message(Base, UUIDMixin, TimestampMixin):
     __tablename__ = "messages"
+    __table_args__ = (
+        Index("ix_messages_request_created_id", "request_id", "created_at", "id"),
+    )
     request_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), index=True, nullable=False)
     author_type: Mapped[str] = mapped_column(String(20), nullable=False)  # CLIENT|LAWYER|SYSTEM
     author_name: Mapped[str | None] = mapped_column(String(200), nullable=True)
diff --git a/app/services/chat_secure_service.py b/app/services/chat_secure_service.py
index 5c8c40d..66fe167 100644
--- a/app/services/chat_secure_service.py
+++ b/app/services/chat_secure_service.py
@@ -92,6 +92,7 @@ def _mark_counterparty_delivery(
     request_id: Any,
     recipient: str,
     mark_read: bool,
+    commit: bool = True,
 ) -> bool:
     side = str(recipient or "").strip().upper()
     if side not in {"CLIENT", "STAFF"}:
@@ -138,7 +139,7 @@ def _mark_counterparty_delivery(
         if read_count:
             changed = True
 
-    if changed:
+    if changed and commit:
         db.commit()
     return changed
 
@@ -155,8 +156,8 @@ def mark_messages_delivered_for_staff(db: Session, *, request_id: Any) -> bool:
     return _mark_counterparty_delivery(db, request_id=request_id, recipient="STAFF", mark_read=False)
 
 
-def mark_messages_read_for_staff(db: Session, *, request_id: Any) -> bool:
-    return _mark_counterparty_delivery(db, request_id=request_id, recipient="STAFF", mark_read=True)
+def mark_messages_read_for_staff(db: Session, *, request_id: Any, commit: bool = True) -> bool:
+    return _mark_counterparty_delivery(db, request_id=request_id, recipient="STAFF", mark_read=True, commit=commit)
 
 
 def serialize_message(row: Message) -> dict[str, Any]:
diff --git a/app/services/notifications.py b/app/services/notifications.py
index 72ff31a..c7d4a8d 100644
--- a/app/services/notifications.py
+++ b/app/services/notifications.py
@@ -363,14 +363,19 @@ def mark_admin_notifications_read(
         query = query.filter(Notification.request_id == request_id)
     if notification_id is not None:
         query = query.filter(Notification.id == notification_id)
-    rows = query.all()
     now = _as_utc_now()
-    for row in rows:
-        row.is_read = True
-        row.read_at = now
-        row.responsible = responsible
-        db.add(row)
-    return len(rows)
+    return int(
+        query.update(
+            {
+                Notification.is_read: True,
+                Notification.read_at: now,
+                Notification.responsible: responsible,
+                Notification.updated_at: now,
+            },
+            synchronize_session=False,
+        )
+        or 0
+    )
 
 
 def mark_client_notifications_read(
@@ -393,14 +398,19 @@ def mark_client_notifications_read(
         query = query.filter(Notification.request_id == request_id)
     if notification_id is not None:
         query = query.filter(Notification.id == notification_id)
-    rows = query.all()
     now = _as_utc_now()
-    for row in rows:
-        row.is_read = True
-        row.read_at = now
-        row.responsible = responsible
-        db.add(row)
-    return len(rows)
+    return int(
+        query.update(
+            {
+                Notification.is_read: True,
+                Notification.read_at: now,
+                Notification.responsible: responsible,
+                Notification.updated_at: now,
+            },
+            synchronize_session=False,
+        )
+        or 0
+    )
 
 
 def list_admin_notifications(
diff --git a/app/web/admin.js b/app/web/admin.js
index 0ae671c..fc2193c 100644
--- a/app/web/admin.js
+++ b/app/web/admin.js
@@ -2293,6 +2293,10 @@
       currentImportantDateAt: "",
       pendingStatusChangePreset: null,
       messages: [],
+      messagesHasMore: false,
+      messagesLoadingMore: false,
+      messagesLoadedCount: 0,
+      messagesTotal: 0,
       attachments: [],
       messageDraft: "",
       selectedFiles: [],
@@ -2505,13 +2509,14 @@
     for (let i = 0; i < text.length; i += 1) hash = hash * 31 + text.charCodeAt(i) >>> 0;
     return palette[hash % palette.length];
   }
-  function resolveAvatarSrc(avatarUrl, accessToken) {
+  function resolveAvatarSrc(avatarUrl, accessToken, size) {
     const raw = String(avatarUrl || "").trim();
     if (!raw) return "";
     if (raw.startsWith("s3://")) {
       const key = raw.slice("s3://".length);
       if (!key || !accessToken) return "";
-      return "/api/admin/uploads/object/" + encodeURIComponent(key) + "?token=" + encodeURIComponent(accessToken);
+      const useThumb = Number(size || 0) > 0 && Number(size || 0) <= 160;
+      return "/api/admin/uploads/object/" + encodeURIComponent(key) + "?token=" + encodeURIComponent(accessToken) + (useThumb ? "&variant=thumb" : "");
     }
     return raw;
   }
@@ -3694,6 +3699,8 @@
     currentImportantDateAt,
     pendingStatusChangePreset,
     messages,
+    messagesHasMore,
+    messagesLoadingMore,
     attachments,
     messageDraft,
     selectedFiles,
@@ -3701,6 +3708,7 @@
     status,
     onMessageChange,
     onSendMessage,
+    onLoadOlderMessages,
     onFilesSelect,
     onRemoveSelectedFile,
     onClearSelectedFiles,
@@ -5066,7 +5074,16 @@
         disabled: loading || fileUploading,
         style: { position: "absolute", width: "1px", height: "1px", opacity: 0, pointerEvents: "none" }
       }
-    ), chatTab === "chat" ? /* @__PURE__ */ React.createElement(React.Fragment, null, /* @__PURE__ */ React.createElement("ul", { className: "simple-list request-modal-list request-chat-list", id: idMap.messagesList, ref: chatListRef }, chatTimelineItems.length ? chatTimelineItems.map(
+    ), chatTab === "chat" ? /* @__PURE__ */ React.createElement(React.Fragment, null, messagesHasMore ? /* @__PURE__ */ React.createElement("div", { className: "request-chat-history-actions" }, /* @__PURE__ */ React.createElement(
+      "button",
+      {
+        type: "button",
+        className: "btn secondary",
+        onClick: onLoadOlderMessages,
+        disabled: loading || fileUploading || messagesLoadingMore
+      },
+      messagesLoadingMore ? "\u0417\u0430\u0433\u0440\u0443\u0437\u043A\u0430 \u0438\u0441\u0442\u043E\u0440\u0438\u0438..." : "\u041F\u043E\u043A\u0430\u0437\u0430\u0442\u044C \u043F\u0440\u0435\u0434\u044B\u0434\u0443\u0449\u0438\u0435 \u0441\u043E\u043E\u0431\u0449\u0435\u043D\u0438\u044F"
+    )) : null, /* @__PURE__ */ React.createElement("ul", { className: "simple-list request-modal-list request-chat-list", id: idMap.messagesList, ref: chatListRef }, chatTimelineItems.length ? chatTimelineItems.map(
       (entry) => entry.type === "date" ? /* @__PURE__ */ React.createElement("li", { key: entry.key, className: "chat-date-divider" }, /* @__PURE__ */ React.createElement("span", null, entry.label)) : entry.type === "file" ? /* @__PURE__ */ React.createElement(
         "li",
         {
@@ -6250,7 +6267,11 @@
             requestData: null,
             financeSummary: null,
             invoices: [],
-            statusRouteNodes: []
+            statusRouteNodes: [],
+            messagesHasMore: false,
+            messagesLoadingMore: false,
+            messagesLoadedCount: 0,
+            messagesTotal: 0
           }));
         }
         try {
@@ -6312,6 +6333,10 @@
             availableStatuses: Array.isArray(statusRouteData?.available_statuses) ? statusRouteData.available_statuses : [],
             currentImportantDateAt: String(statusRouteData?.current_important_date_at || rowData?.important_date_at || ""),
             messages: normalizedMessages,
+            messagesHasMore: Boolean(workspaceData?.messages_has_more),
+            messagesLoadingMore: false,
+            messagesLoadedCount: Number(workspaceData?.messages_loaded_count || normalizedMessages.length || 0),
+            messagesTotal: Number(workspaceData?.messages_total || normalizedMessages.length || 0),
             attachments,
             selectedFiles: [],
             fileUploading: false
@@ -6330,6 +6355,10 @@
             availableStatuses: [],
             currentImportantDateAt: "",
             messages: [],
+            messagesHasMore: false,
+            messagesLoadingMore: false,
+            messagesLoadedCount: 0,
+            messagesTotal: 0,
             attachments: [],
             selectedFiles: [],
             fileUploading: false
@@ -6478,17 +6507,57 @@
             download_url: resolveAdminObjectSrc2(item?.s3_key, token)
           }));
           if (nextMessages.length || nextAttachments.length) {
-            setRequestModal((prev) => ({
-              ...prev,
-              messages: mergeRowsById(prev.messages, nextMessages),
-              attachments: mergeRowsById(prev.attachments, nextAttachments)
-            }));
+            setRequestModal((prev) => {
+              const mergedMessages = mergeRowsById(prev.messages, nextMessages);
+              const previousCount = Array.isArray(prev.messages) ? prev.messages.length : 0;
+              const addedCount = Math.max(0, mergedMessages.length - previousCount);
+              return {
+                ...prev,
+                messages: mergedMessages,
+                messagesLoadedCount: Number(prev.messagesLoadedCount || previousCount) + addedCount,
+                messagesTotal: Number(prev.messagesTotal || previousCount) + addedCount,
+                attachments: mergeRowsById(prev.attachments, nextAttachments)
+              };
+            });
           }
         }
         return payload || { has_updates: false, typing: [], cursor: null };
       },
       [api, requestModal.requestId, resolveAdminObjectSrc2, token, users]
     );
+    const loadOlderRequestMessages = useCallback(async () => {
+      const requestId = String(requestModal.requestId || "").trim();
+      const loadedCount = Number(requestModal.messagesLoadedCount || 0);
+      if (!api || !requestId || requestModal.messagesLoadingMore || !requestModal.messagesHasMore) return null;
+      setRequestModal((prev) => ({ ...prev, messagesLoadingMore: true }));
+      try {
+        const payload = await api(
+          "/api/admin/chat/requests/" + requestId + "/messages-window?before_count=" + encodeURIComponent(String(loadedCount))
+        );
+        const nextMessages = normalizeMessageAuthors(payload?.rows || [], users);
+        setRequestModal((prev) => ({
+          ...prev,
+          messagesLoadingMore: false,
+          messages: mergeRowsById(nextMessages, prev.messages),
+          messagesHasMore: Boolean(payload?.has_more),
+          messagesLoadedCount: Number(payload?.loaded_count || prev.messagesLoadedCount || 0),
+          messagesTotal: Number(payload?.total || prev.messagesTotal || 0)
+        }));
+        return payload || null;
+      } catch (error) {
+        setRequestModal((prev) => ({ ...prev, messagesLoadingMore: false }));
+        if (typeof setStatus === "function") setStatus("requestModal", "\u041E\u0448\u0438\u0431\u043A\u0430 \u0437\u0430\u0433\u0440\u0443\u0437\u043A\u0438 \u0438\u0441\u0442\u043E\u0440\u0438\u0438: " + error.message, "error");
+        return null;
+      }
+    }, [
+      api,
+      requestModal.messagesHasMore,
+      requestModal.messagesLoadedCount,
+      requestModal.messagesLoadingMore,
+      requestModal.requestId,
+      setStatus,
+      users
+    ]);
     const setRequestTyping = useCallback(
       async ({ typing } = {}) => {
         const requestId = requestModal.requestId;
@@ -6604,6 +6673,7 @@
       submitRequestStatusChange,
       submitRequestModalMessage,
       probeRequestLive,
+      loadOlderRequestMessages,
       setRequestTyping,
       loadRequestDataTemplates,
       loadRequestDataBatch,
@@ -7074,9 +7144,19 @@
       useEffect(() => setBroken(false), [avatarUrl]);
       const initials = userInitials(name, email);
       const bg = avatarColor(name || email || initials);
-      const src = resolveAvatarSrc(avatarUrl, accessToken);
+      const src = resolveAvatarSrc(avatarUrl, accessToken, size);
       const canShowImage = Boolean(src && !broken);
-      return /* @__PURE__ */ React.createElement("span", { className: "avatar", style: { width: size + "px", height: size + "px", backgroundColor: bg } }, canShowImage ? /* @__PURE__ */ React.createElement("img", { src, alt: name || email || "avatar", onError: () => setBroken(true) }) : /* @__PURE__ */ React.createElement("span", null, initials));
+      return /* @__PURE__ */ React.createElement("span", { className: "avatar", style: { width: size + "px", height: size + "px", backgroundColor: bg } }, canShowImage ? /* @__PURE__ */ React.createElement(
+        "img",
+        {
+          src,
+          alt: name || email || "avatar",
+          loading: "lazy",
+          decoding: "async",
+          fetchPriority: size >= 64 ? "low" : "auto",
+          onError: () => setBroken(true)
+        }
+      ) : /* @__PURE__ */ React.createElement("span", null, initials));
     }
     function LoginScreen({ onSubmit, status }) {
       const [email, setEmail] = useState("");
@@ -7505,6 +7585,7 @@
       const [email, setEmail] = useState("");
       const [userId, setUserId] = useState("");
       const [activeSection, setActiveSection] = useState(initialSection);
+      const dashboardLoadRef = useRef(0);
       const [dashboardData, setDashboardData] = useState({
         scope: "",
         cards: [],
@@ -7625,6 +7706,7 @@
         submitRequestStatusChange,
         submitRequestModalMessage,
         probeRequestLive,
+        loadOlderRequestMessages,
         setRequestTyping,
         loadRequestDataTemplates,
         loadRequestDataBatch,
@@ -8412,34 +8494,36 @@
       }, [configActiveKey, dictionaries.topics, loadTable, statusDesignerTopicCode]);
       const loadDashboard = useCallback(
         async (tokenOverride) => {
+          const loadId = Date.now();
+          dashboardLoadRef.current = loadId;
           setStatus("dashboard", "\u0417\u0430\u0433\u0440\u0443\u0437\u043A\u0430...", "");
           try {
-            const data = await api("/api/admin/metrics/overview", {}, tokenOverride);
-            const scope = String(data.scope || role || "");
-            const cards = scope === "LAWYER" ? [
-              { label: "\u041C\u043E\u0438 \u0437\u0430\u044F\u0432\u043A\u0438", value: data.assigned_total ?? 0 },
-              { label: "\u041C\u043E\u0438 \u0430\u043A\u0442\u0438\u0432\u043D\u044B\u0435", value: data.active_assigned_total ?? 0 },
-              { label: "\u041D\u0435\u043D\u0430\u0437\u043D\u0430\u0447\u0435\u043D\u043D\u044B\u0435", value: data.unassigned_total ?? 0 },
-              { label: "\u041C\u043E\u0438 \u043D\u0435\u043F\u0440\u043E\u0447\u0438\u0442\u0430\u043D\u043D\u044B\u0435", value: data.my_unread_notifications_total ?? data.my_unread_updates ?? 0 },
-              { label: "\u041F\u0440\u043E\u0441\u0440\u043E\u0447\u0435\u043D\u043E SLA", value: data.sla_overdue ?? 0 }
+            const buildDashboardCards = (scope2, payload) => scope2 === "LAWYER" ? [
+              { label: "\u041C\u043E\u0438 \u0437\u0430\u044F\u0432\u043A\u0438", value: payload.assigned_total ?? 0 },
+              { label: "\u041C\u043E\u0438 \u0430\u043A\u0442\u0438\u0432\u043D\u044B\u0435", value: payload.active_assigned_total ?? 0 },
+              { label: "\u041D\u0435\u043D\u0430\u0437\u043D\u0430\u0447\u0435\u043D\u043D\u044B\u0435", value: payload.unassigned_total ?? 0 },
+              { label: "\u041C\u043E\u0438 \u043D\u0435\u043F\u0440\u043E\u0447\u0438\u0442\u0430\u043D\u043D\u044B\u0435", value: payload.my_unread_notifications_total ?? payload.my_unread_updates ?? 0 },
+              { label: "\u041F\u0440\u043E\u0441\u0440\u043E\u0447\u0435\u043D\u043E SLA", value: payload.sla_overdue ?? 0 }
             ] : [
-              { label: "\u041D\u043E\u0432\u044B\u0435", value: data.new ?? 0 },
-              { label: "\u041D\u0430\u0437\u043D\u0430\u0447\u0435\u043D\u043D\u044B\u0435", value: data.assigned_total ?? 0 },
-              { label: "\u041D\u0435\u043D\u0430\u0437\u043D\u0430\u0447\u0435\u043D\u043D\u044B\u0435", value: data.unassigned_total ?? 0 },
-              { label: "\u041F\u0440\u043E\u0441\u0440\u043E\u0447\u0435\u043D\u043E SLA", value: data.sla_overdue ?? 0 },
-              { label: "\u041C\u043E\u0438 \u043D\u0435\u043F\u0440\u043E\u0447\u0438\u0442\u0430\u043D\u043D\u044B\u0435", value: data.my_unread_notifications_total ?? data.my_unread_updates ?? 0 },
-              { label: "\u0412\u044B\u0440\u0443\u0447\u043A\u0430 (\u043C\u0435\u0441.)", value: Number(data.month_revenue ?? 0).toFixed(2) },
-              { label: "\u0420\u0430\u0441\u0445\u043E\u0434\u044B (\u043C\u0435\u0441.)", value: Number(data.month_expenses ?? 0).toFixed(2) },
-              { label: "\u041D\u0435\u043F\u0440\u043E\u0447\u0438\u0442\u0430\u043D\u043E \u044E\u0440\u0438\u0441\u0442\u0430\u043C\u0438", value: data.unread_for_lawyers ?? 0 },
-              { label: "\u041D\u0435\u043F\u0440\u043E\u0447\u0438\u0442\u0430\u043D\u043E \u043A\u043B\u0438\u0435\u043D\u0442\u0430\u043C\u0438", value: data.unread_for_clients ?? 0 }
+              { label: "\u041D\u043E\u0432\u044B\u0435", value: payload.new ?? 0 },
+              { label: "\u041D\u0430\u0437\u043D\u0430\u0447\u0435\u043D\u043D\u044B\u0435", value: payload.assigned_total ?? 0 },
+              { label: "\u041D\u0435\u043D\u0430\u0437\u043D\u0430\u0447\u0435\u043D\u043D\u044B\u0435", value: payload.unassigned_total ?? 0 },
+              { label: "\u041F\u0440\u043E\u0441\u0440\u043E\u0447\u0435\u043D\u043E SLA", value: payload.sla_overdue ?? 0 },
+              { label: "\u041C\u043E\u0438 \u043D\u0435\u043F\u0440\u043E\u0447\u0438\u0442\u0430\u043D\u043D\u044B\u0435", value: payload.my_unread_notifications_total ?? payload.my_unread_updates ?? 0 },
+              { label: "\u0412\u044B\u0440\u0443\u0447\u043A\u0430 (\u043C\u0435\u0441.)", value: Number(payload.month_revenue ?? 0).toFixed(2) },
+              { label: "\u0420\u0430\u0441\u0445\u043E\u0434\u044B (\u043C\u0435\u0441.)", value: Number(payload.month_expenses ?? 0).toFixed(2) },
+              { label: "\u041D\u0435\u043F\u0440\u043E\u0447\u0438\u0442\u0430\u043D\u043E \u044E\u0440\u0438\u0441\u0442\u0430\u043C\u0438", value: payload.unread_for_lawyers ?? 0 },
+              { label: "\u041D\u0435\u043F\u0440\u043E\u0447\u0438\u0442\u0430\u043D\u043E \u043A\u043B\u0438\u0435\u043D\u0442\u0430\u043C\u0438", value: payload.unread_for_clients ?? 0 }
             ];
+            const data = await api("/api/admin/metrics/overview?include_sla=false", {}, tokenOverride);
+            const scope = String(data.scope || role || "");
             const localized = {};
             Object.entries(data.by_status || {}).forEach(([code, count]) => {
               localized[statusLabel(code)] = count;
             });
             setDashboardData({
               scope,
-              cards,
+              cards: buildDashboardCards(scope, data),
               byStatus: localized,
               lawyerLoads: data.lawyer_loads || [],
               myUnreadByEvent: data.my_unread_by_event || {},
@@ -8453,6 +8537,17 @@
               monthExpenses: Number(data.month_expenses || 0)
             });
             setStatus("dashboard", "\u0414\u0430\u043D\u043D\u044B\u0435 \u043E\u0431\u043D\u043E\u0432\u043B\u0435\u043D\u044B", "ok");
+            void (async () => {
+              try {
+                const slaData = await api("/api/admin/metrics/overview-sla", {}, tokenOverride);
+                if (dashboardLoadRef.current !== loadId) return;
+                setDashboardData((prev) => ({
+                  ...prev,
+                  cards: buildDashboardCards(String(prev.scope || scope || ""), { ...data, ...slaData })
+                }));
+              } catch (_) {
+              }
+            })();
           } catch (error) {
             setStatus("dashboard", "\u041E\u0448\u0438\u0431\u043A\u0430: " + error.message, "error");
           }
@@ -9670,13 +9765,34 @@
       useEffect(() => {
         if (!token || !role) return;
         let cancelled = false;
+        let deferredBootstrapCleanup = null;
+        const scheduleDeferredBootstrap = () => {
+          if (typeof window !== "undefined" && typeof window.requestIdleCallback === "function") {
+            const handle2 = window.requestIdleCallback(() => {
+              if (!cancelled) bootstrapReferenceData(token, role);
+            }, { timeout: 1500 });
+            return () => {
+              if (typeof window.cancelIdleCallback === "function") window.cancelIdleCallback(handle2);
+            };
+          }
+          const handle = window.setTimeout(() => {
+            if (!cancelled) bootstrapReferenceData(token, role);
+          }, 250);
+          return () => window.clearTimeout(handle);
+        };
         (async () => {
+          if (!isRequestWorkspaceRoute && !routeInfo.section) {
+            if (!cancelled) await loadDashboard(token);
+            if (!cancelled) await loadTotpStatus(token);
+            if (!cancelled) deferredBootstrapCleanup = scheduleDeferredBootstrap();
+            return;
+          }
           bootstrapReferenceData(token, role);
-          if (!cancelled && !isRequestWorkspaceRoute && !routeInfo.section) await loadDashboard(token);
           if (!cancelled) await loadTotpStatus(token);
         })();
         return () => {
           cancelled = true;
+          if (typeof deferredBootstrapCleanup === "function") deferredBootstrapCleanup();
         };
       }, [bootstrapReferenceData, isRequestWorkspaceRoute, loadDashboard, loadTotpStatus, role, routeInfo.section, token]);
       useEffect(() => {
@@ -10033,6 +10149,8 @@
           currentImportantDateAt: requestModal.currentImportantDateAt || "",
           pendingStatusChangePreset: requestModal.pendingStatusChangePreset,
           messages: requestModal.messages || [],
+          messagesHasMore: Boolean(requestModal.messagesHasMore),
+          messagesLoadingMore: Boolean(requestModal.messagesLoadingMore),
           attachments: requestModal.attachments || [],
           messageDraft: requestModal.messageDraft || "",
           selectedFiles: requestModal.selectedFiles || [],
@@ -10040,6 +10158,7 @@
           status: getStatus("requestModal"),
           onMessageChange: updateRequestModalMessageDraft,
           onSendMessage: submitRequestModalMessage,
+          onLoadOlderMessages: loadOlderRequestMessages,
           onFilesSelect: appendRequestModalFiles,
           onRemoveSelectedFile: removeRequestModalFile,
           onClearSelectedFiles: clearRequestModalFiles,
diff --git a/app/web/admin.jsx b/app/web/admin.jsx
index 9f60fe1..1c7b2bd 100644
--- a/app/web/admin.jsx
+++ b/app/web/admin.jsx
@@ -274,12 +274,19 @@ const NEW_REQUEST_CLIENT_OPTION = "__new_client__";
     useEffect(() => setBroken(false), [avatarUrl]);
     const initials = userInitials(name, email);
     const bg = avatarColor(name || email || initials);
-    const src = resolveAvatarSrc(avatarUrl, accessToken);
+    const src = resolveAvatarSrc(avatarUrl, accessToken, size);
     const canShowImage = Boolean(src && !broken);
     return (
       <span className="avatar" style={{ width: size + "px", height: size + "px", backgroundColor: bg }}>
         {canShowImage ? (
-          <img src={src} alt={name || email || "avatar"} onError={() => setBroken(true)} />
+          <img
+            src={src}
+            alt={name || email || "avatar"}
+            loading="lazy"
+            decoding="async"
+            fetchPriority={size >= 64 ? "low" : "auto"}
+            onError={() => setBroken(true)}
+          />
         ) : (
           <span>{initials}</span>
         )}
@@ -3534,13 +3541,34 @@ const NEW_REQUEST_CLIENT_OPTION = "__new_client__";
     useEffect(() => {
       if (!token || !role) return;
       let cancelled = false;
+      let deferredBootstrapCleanup = null;
+      const scheduleDeferredBootstrap = () => {
+        if (typeof window !== "undefined" && typeof window.requestIdleCallback === "function") {
+          const handle = window.requestIdleCallback(() => {
+            if (!cancelled) bootstrapReferenceData(token, role);
+          }, { timeout: 1500 });
+          return () => {
+            if (typeof window.cancelIdleCallback === "function") window.cancelIdleCallback(handle);
+          };
+        }
+        const handle = window.setTimeout(() => {
+          if (!cancelled) bootstrapReferenceData(token, role);
+        }, 250);
+        return () => window.clearTimeout(handle);
+      };
       (async () => {
+        if (!isRequestWorkspaceRoute && !routeInfo.section) {
+          if (!cancelled) await loadDashboard(token);
+          if (!cancelled) await loadTotpStatus(token);
+          if (!cancelled) deferredBootstrapCleanup = scheduleDeferredBootstrap();
+          return;
+        }
         bootstrapReferenceData(token, role);
-        if (!cancelled && !isRequestWorkspaceRoute && !routeInfo.section) await loadDashboard(token);
         if (!cancelled) await loadTotpStatus(token);
       })();
       return () => {
         cancelled = true;
+        if (typeof deferredBootstrapCleanup === "function") deferredBootstrapCleanup();
       };
     }, [bootstrapReferenceData, isRequestWorkspaceRoute, loadDashboard, loadTotpStatus, role, routeInfo.section, token]);
 
diff --git a/app/web/admin/shared/utils.js b/app/web/admin/shared/utils.js
index fc20738..1b32300 100644
--- a/app/web/admin/shared/utils.js
+++ b/app/web/admin/shared/utils.js
@@ -225,13 +225,20 @@ export function avatarColor(seed) {
   return palette[hash % palette.length];
 }
 
-export function resolveAvatarSrc(avatarUrl, accessToken) {
+export function resolveAvatarSrc(avatarUrl, accessToken, size) {
   const raw = String(avatarUrl || "").trim();
   if (!raw) return "";
   if (raw.startsWith("s3://")) {
     const key = raw.slice("s3://".length);
     if (!key || !accessToken) return "";
-    return "/api/admin/uploads/object/" + encodeURIComponent(key) + "?token=" + encodeURIComponent(accessToken);
+    const useThumb = Number(size || 0) > 0 && Number(size || 0) <= 160;
+    return (
+      "/api/admin/uploads/object/" +
+      encodeURIComponent(key) +
+      "?token=" +
+      encodeURIComponent(accessToken) +
+      (useThumb ? "&variant=thumb" : "")
+    );
   }
   return raw;
 }
diff --git a/context/19_performance_tracking_2026-03-16.md b/context/19_performance_tracking_2026-03-16.md
index 4d3c5db..cac6aae 100644
--- a/context/19_performance_tracking_2026-03-16.md
+++ b/context/19_performance_tracking_2026-03-16.md
@@ -72,6 +72,14 @@
 - 2026-03-16: при первом прогоне long-chat сценария выяснилось, что `chat-service` работал на старом контейнере без актуальных `X-Perf-*` headers; после rebuild `chat-service` server timing для `messages-window` подтвержден на живом контуре.
 - 2026-03-16: `PERF-06` продвинут дальше - SQL-first window теперь покрывает не только `created_newest`, но и `sort_mode=lawyer`, а boolean-фильтр `deadline_alert` переносится в SQL до загрузки строк.
 - 2026-03-16: добавлен контейнерный регресс `test_requests_kanban_lawyer_sort_uses_limit_without_losing_total`, подтверждающий `limit/truncated/total` для `sort_mode=lawyer`.
+- 2026-03-17: по продовым замерам dashboard все еще создает сетевое давление пачкой справочников на первом маунте; admin UI перестроен так, чтобы на дефолтном входе сначала грузить `dashboard + totp`, а `bootstrapReferenceData()` откладывать до idle.
+- 2026-03-17: `UserAvatar` переведен на `loading="lazy"`, `decoding="async"` и low fetch priority для крупных аватаров, чтобы тяжелые изображения юристов меньше конкурировали с API на первом экране dashboard.
+- 2026-03-17: для `workspace` добавлены составные индексы `messages(request_id, created_at, id)`, `attachments(request_id, created_at, id)`, `invoices(request_id, issued_at, id)`; это должно снизить стоимость order-by выборок при открытии заявки.
+- 2026-03-17: добавлена миграция `0035_workspace_perf_indexes`, обновлен `tests.test_migrations`, контейнерный прогон миграций пройден.
+- 2026-03-17: avatar pipeline исправлен архитектурно: оригинал аватара больше не переписывается, рядом создается `thumb.webp`, а admin avatar URLs для small/medium render идут через `variant=thumb`.
+- 2026-03-17: admin avatar proxy умеет по `variant=thumb` отдавать сжатый вариант и, если его еще нет, достраивать его на лету из оригинала; public featured staff URLs тоже переключены на `?variant=thumb` и умеют так же достраивать thumb на лету.
+- 2026-03-17: `workspace` упрощен server-side: убрано дублирующее `get_request_service() + db.get(Request)` внутри одного запроса, read-mark side effects сведены в один проход, `mark_admin_notifications_read` переведен на bulk update, `status_route` повторно использует уже загруженный `Request`.
+- 2026-03-17: контейнерные регрессы после avatar/workspace правок пройдены: `tests.test_uploads_s3`, `tests.test_featured_staff_public`, `tests.admin.test_lawyer_chat`.
 
 ## Дальше
 
diff --git a/tests/test_featured_staff_public.py b/tests/test_featured_staff_public.py
index 9003220..e66935a 100644
--- a/tests/test_featured_staff_public.py
+++ b/tests/test_featured_staff_public.py
@@ -119,7 +119,7 @@ class FeaturedStaffPublicTests(unittest.TestCase):
         self.assertEqual(len(payload.get("items") or []), 1)
         row = payload["items"][0]
         self.assertEqual(row.get("admin_user_id"), user_id)
-        self.assertEqual(row.get("avatar_url"), "/api/public/featured-staff/avatar/" + user_id)
+        self.assertEqual(row.get("avatar_url"), "/api/public/featured-staff/avatar/" + user_id + "?variant=thumb")
 
     def test_featured_staff_avatar_proxy_streams_s3_avatar(self):
         user_id, avatar_key = self._seed_featured_lawyer(enabled=True)
diff --git a/tests/test_migrations.py b/tests/test_migrations.py
index cac08e4..68a8f31 100644
--- a/tests/test_migrations.py
+++ b/tests/test_migrations.py
@@ -114,7 +114,7 @@ class MigrationTests(unittest.TestCase):
     def test_alembic_version_is_set(self):
         with self.engine.connect() as conn:
             version = conn.execute(text("SELECT version_num FROM alembic_version")).scalar_one()
-        self.assertEqual(version, "0034_request_assigned_lawyer_idx")
+        self.assertEqual(version, "0035_workspace_perf_indexes")
 
     def test_responsible_column_exists_in_all_domain_tables(self):
         tables = {
@@ -209,6 +209,14 @@ class MigrationTests(unittest.TestCase):
         indexes = {index["name"] for index in self.inspector.get_indexes("requests")}
         self.assertIn("ix_requests_assigned_lawyer_id", indexes)
 
+    def test_workspace_payload_tables_contain_ordering_indexes(self):
+        message_indexes = {index["name"] for index in self.inspector.get_indexes("messages")}
+        attachment_indexes = {index["name"] for index in self.inspector.get_indexes("attachments")}
+        invoice_indexes = {index["name"] for index in self.inspector.get_indexes("invoices")}
+        self.assertIn("ix_messages_request_created_id", message_indexes)
+        self.assertIn("ix_attachments_request_created_id", attachment_indexes)
+        self.assertIn("ix_invoices_request_issued_id", invoice_indexes)
+
     def test_data_retention_policies_contains_core_columns(self):
         columns = {column["name"] for column in self.inspector.get_columns("data_retention_policies")}
         self.assertIn("id", columns)
diff --git a/tests/test_uploads_s3.py b/tests/test_uploads_s3.py
index 571aa30..fa3011b 100644
--- a/tests/test_uploads_s3.py
+++ b/tests/test_uploads_s3.py
@@ -165,12 +165,18 @@ class UploadsS3Tests(unittest.TestCase):
             )
             self.assertEqual(done_resp.status_code, 200)
             self.assertEqual(done_resp.json()["avatar_url"], f"s3://{key}")
+            thumb_key = key.rsplit(".", 1)[0] + "__thumb.webp"
+            self.assertIn(thumb_key, fake_s3.objects)
 
             token = headers["Authorization"].replace("Bearer ", "")
             view_resp = self.client.get(f"/api/admin/uploads/object/{key}?token={token}")
             self.assertEqual(view_resp.status_code, 200)
-            self.assertNotEqual(view_resp.content, _AVATAR_PNG_1X1)
-            self.assertIn("image/webp", view_resp.headers.get("content-type", ""))
+            self.assertEqual(view_resp.content, _AVATAR_PNG_1X1)
+            self.assertIn("image/png", view_resp.headers.get("content-type", ""))
+            thumb_resp = self.client.get(f"/api/admin/uploads/object/{key}?token={token}&variant=thumb")
+            self.assertEqual(thumb_resp.status_code, 200)
+            self.assertNotEqual(thumb_resp.content, _AVATAR_PNG_1X1)
+            self.assertIn("image/webp", thumb_resp.headers.get("content-type", ""))
 
         with self.SessionLocal() as db:
             refreshed = db.get(AdminUser, UUID(user_id))