chore: adds additional mcp-description file to gitignore

Reviewed-on: #23

.gitignore

@@ -8,3 +8,4 @@ pytest-cache-files-*/
 .coverage
 htmlcov/
 postgres_data/
+MCP_DESCRIPTION.md

app/admin.py

@@ -17,6 +17,7 @@ from app.services.admin_data import (
     stats_payload,
 )
 from app.services.crawl_control import get_running_run, run_crawl_if_idle
+from app.services.crawler import refresh_employee
 from app.version import BACKEND_VERSION, FRONTEND_VERSION
 
 router = APIRouter(prefix="/admin")
@@ -144,10 +145,31 @@ def employee_detail(
     return _render(
         request,
         "employee_detail.html",
-        {"employee": employee, "employee_view": employee_detail_payload(employee), "snapshots": snapshots},
+        {
+            "employee": employee,
+            "employee_view": employee_detail_payload(employee),
+            "snapshots": snapshots,
+            "refresh_status": request.query_params.get("refresh_status"),
+        },
     )
 
 
+@router.post("/employees/{employee_id}/refresh")
+def refresh_employee_detail(
+    employee_id: int,
+    request: Request,
+    db: Session = Depends(get_db),
+    settings: Settings = Depends(get_settings),
+):
+    require_admin(request, settings)
+    employee = db.get(Employee, employee_id)
+    if not employee:
+        return RedirectResponse("/admin/directory", status_code=303)
+    run = refresh_employee(db, employee, settings)
+    status = "success" if run.status == "completed" else "error"
+    return RedirectResponse(f"/admin/employees/{employee_id}?refresh_status={status}", status_code=303)
+
+
 @router.get("/runs", response_class=HTMLResponse)
 def runs(request: Request, db: Session = Depends(get_db), settings: Settings = Depends(get_settings)):
     require_admin(request, settings)

app/mcp.py

@@ -7,12 +7,31 @@ from sqlalchemy.orm import Session
 from app.db import get_db
 from app.models import CrawlRun, Employee
 from app.services.admin_data import run_detail_payload
+from app.services.dataset_versions import service_info_payload, sync_employees_payload
 from app.version import BACKEND_VERSION
 
 router = APIRouter(prefix="/mcp")
+PROTOCOL_VERSION = "2024-11-05"
+SERVICE_NAME = "miem-employees"
 
 
 TOOLS = [
+    {
+        "name": "get_service_info",
+        "description": "Return service metadata, supported tools, and current dataset version.",
+        "inputSchema": {"type": "object", "properties": {}},
+    },
+    {
+        "name": "sync_employees",
+        "description": "Synchronize employees by dataset hash. Returns a full snapshot or a delta from client_hash.",
+        "inputSchema": {
+            "type": "object",
+            "properties": {
+                "client_hash": {"type": "string"},
+                "include_data": {"type": "boolean", "default": True},
+            },
+        },
+    },
     {
         "name": "search_employees",
         "description": "Search MIEM employees by name or profile URL.",
@@ -71,8 +90,8 @@ async def mcp_http(
     try:
         if method == "initialize":
             result = {
-                "protocolVersion": "2024-11-05",
+                "protocolVersion": PROTOCOL_VERSION,
-                "serverInfo": {"name": "miem-employees", "version": BACKEND_VERSION},
+                "serverInfo": {"name": SERVICE_NAME, "version": BACKEND_VERSION},
                 "capabilities": {"tools": {}},
             }
         elif method == "tools/list":
@@ -87,6 +106,24 @@ async def mcp_http(
 
 
 def _call_tool(db: Session, name: str, arguments: dict) -> dict:
+    if name == "get_service_info":
+        return _tool_response(
+            service_info_payload(
+                db,
+                tools=TOOLS,
+                service_name=SERVICE_NAME,
+                backend_version=BACKEND_VERSION,
+                protocol_version=PROTOCOL_VERSION,
+            )
+        )
+    if name == "sync_employees":
+        return _tool_response(
+            sync_employees_payload(
+                db,
+                client_hash=arguments.get("client_hash"),
+                include_data=bool(arguments.get("include_data", True)),
+            )
+        )
     if name == "search_employees":
         return _tool_response(_search_employees(db, arguments))
     if name == "get_employee":

app/models.py

@@ -76,6 +76,7 @@ class CrawlRun(Base):
     message: Mapped[str | None] = mapped_column(Text)
 
     employee_changes: Mapped[list["CrawlRunEmployeeChange"]] = relationship(back_populates="crawl_run")
+    dataset_versions: Mapped[list["DatasetVersion"]] = relationship(back_populates="crawl_run")
 
 
 class CrawlRunEmployeeChange(Base):
@@ -134,3 +135,42 @@ class ParserSource(Base):
     source_url: Mapped[str] = mapped_column(Text, nullable=False)
     enabled: Mapped[bool] = mapped_column(default=True, nullable=False)
     created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow, nullable=False)
+
+
+class DatasetVersion(Base):
+    __tablename__ = "dataset_versions"
+    __table_args__ = (
+        UniqueConstraint("hash", name="uq_dataset_versions_hash"),
+        Index("ix_dataset_versions_created_at", "created_at"),
+    )
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    hash: Mapped[str] = mapped_column(String(64), nullable=False)
+    previous_hash: Mapped[str | None] = mapped_column(String(64))
+    crawl_run_id: Mapped[int | None] = mapped_column(ForeignKey("crawl_runs.id"))
+    employee_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
+    active_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
+    dismissed_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow, nullable=False)
+
+    crawl_run: Mapped[CrawlRun | None] = relationship(back_populates="dataset_versions")
+    items: Mapped[list["DatasetVersionItem"]] = relationship(back_populates="dataset_version", cascade="all, delete-orphan")
+
+
+class DatasetVersionItem(Base):
+    __tablename__ = "dataset_version_items"
+    __table_args__ = (
+        UniqueConstraint("dataset_version_id", "profile_key", name="uq_dataset_version_items_version_profile"),
+        Index("ix_dataset_version_items_hash", "dataset_version_id"),
+        Index("ix_dataset_version_items_profile_key", "profile_key"),
+    )
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    dataset_version_id: Mapped[int] = mapped_column(ForeignKey("dataset_versions.id"), nullable=False)
+    profile_key: Mapped[str] = mapped_column(String(255), nullable=False)
+    employee_id: Mapped[int | None] = mapped_column(ForeignKey("employees.id"))
+    status: Mapped[str] = mapped_column(String(32), nullable=False)
+    checksum: Mapped[str] = mapped_column(String(64), nullable=False)
+
+    dataset_version: Mapped[DatasetVersion] = relationship(back_populates="items")
+    employee: Mapped[Employee | None] = relationship()

app/parser/profile.py

@@ -387,7 +387,7 @@ def _infer_section_type(title: str, nodes: list) -> str:
     lowered = title.lower()
     if _has_table(nodes):
         return "table"
-    if "публикац" in lowered:
+    if _is_publications_title(lowered):
         return "publications"
     if "учебные курсы" in lowered:
         return "courses_by_year"
@@ -398,6 +398,10 @@ def _infer_section_type(title: str, nodes: list) -> str:
     return "generic"
 
 
+def _is_publications_title(lowered_title: str) -> bool:
+    return lowered_title.startswith("публикац")
+
+
 def _has_table(nodes: list) -> bool:
     return any(isinstance(node, Tag) and (node.name == "table" or node.find("table")) for node in nodes)
 

app/services/crawler.py

@@ -13,6 +13,7 @@ from app.models import CrawlError, CrawlRun, CrawlRunEmployeeChange, Employee, E
 from app.parser.collector import collect_profile_links
 from app.parser.profile import parse_person_profile
 from app.parser.profile_url import profile_key
+from app.services.dataset_versions import get_or_create_current_version
 
 HEADERS = {
     "User-Agent": "Mozilla/5.0 (compatible; MIEMEmployeesBot/0.1.0; +https://miem.hse.ru/)"
@@ -70,6 +71,7 @@ def run_crawl(db: Session, settings: Settings) -> CrawlRun:
 
         run.dismissed_count = _mark_dismissed(db, run, found_keys, session, settings.request_timeout)
         run.status = "completed"
+        get_or_create_current_version(db, crawl_run_id=run.id)
     except Exception as exc:
         run.status = "failed"
         run.message = str(exc)
@@ -80,6 +82,49 @@ def run_crawl(db: Session, settings: Settings) -> CrawlRun:
     return run
 
 
+def refresh_employee(db: Session, employee: Employee, settings: Settings) -> CrawlRun:
+    run = CrawlRun(source_url=employee.canonical_url, status="running", found_count=1)
+    db.add(run)
+    db.commit()
+    db.refresh(run)
+
+    try:
+        with requests.Session() as session:
+            parsed = parse_person_profile(
+                session,
+                employee.canonical_url,
+                HEADERS,
+                settings.request_timeout,
+                settings.parser_use_playwright,
+            )
+        if not parsed:
+            raise ValueError("Профиль не удалось распарсить.")
+        if _parsed_profile_key(parsed) != employee.profile_key:
+            raise ValueError("Распарсенный профиль не совпадает с обновляемым сотрудником.")
+
+        _upsert_employee(db, run, parsed)
+        run.parsed_count = 1
+        run.status = "completed"
+        get_or_create_current_version(db, crawl_run_id=run.id)
+    except Exception as exc:
+        run.status = "failed"
+        run.error_count = 1
+        run.message = str(exc)
+        db.add(
+            CrawlError(
+                crawl_run_id=run.id,
+                profile_url=employee.canonical_url,
+                error_type=type(exc).__name__,
+                message=str(exc),
+            )
+        )
+    finally:
+        run.finished_at = datetime.now(timezone.utc)
+        db.commit()
+        db.refresh(run)
+    return run
+
+
 def _ensure_source(db: Session, source_url: str) -> ParserSource:
     source = db.scalar(select(ParserSource).where(ParserSource.source_url == source_url))
     if source:
@@ -91,10 +136,14 @@ def _ensure_source(db: Session, source_url: str) -> ParserSource:
     return source
 
 
+def _parsed_profile_key(parsed: dict) -> str:
+    return f"{parsed.get('profile_type')}:{parsed.get('profile_id')}"
+
+
 def _upsert_employee(db: Session, run: CrawlRun, parsed: dict) -> Employee:
     html = parsed.pop("_html", None)
     checksum = _checksum(parsed)
-    key = f"{parsed.get('profile_type')}:{parsed.get('profile_id')}"
+    key = _parsed_profile_key(parsed)
     employee = db.scalar(select(Employee).where(Employee.profile_key == key))
     now = datetime.now(timezone.utc)
     if not employee:

app/services/dataset_versions.py

@@ -0,0 +1,227 @@
+import hashlib
+import json
+from dataclasses import dataclass
+
+from sqlalchemy import desc, select
+from sqlalchemy.orm import Session
+
+from app.models import DatasetVersion, DatasetVersionItem, Employee
+
+
+@dataclass(frozen=True)
+class EmployeeMarker:
+    profile_key: str
+    employee_id: int | None
+    status: str
+    checksum: str
+
+
+def get_or_create_current_version(db: Session, *, crawl_run_id: int | None = None) -> DatasetVersion:
+    employees = db.scalars(select(Employee).order_by(Employee.profile_key)).all()
+    markers = [_employee_marker(employee) for employee in employees]
+    dataset_hash = _dataset_hash(markers)
+    latest = get_latest_version(db)
+    if latest and latest.hash == dataset_hash:
+        return latest
+
+    active_count = sum(1 for marker in markers if marker.status == "active")
+    dismissed_count = sum(1 for marker in markers if marker.status == "dismissed")
+    version = DatasetVersion(
+        hash=dataset_hash,
+        previous_hash=latest.hash if latest else None,
+        crawl_run_id=crawl_run_id,
+        employee_count=len(markers),
+        active_count=active_count,
+        dismissed_count=dismissed_count,
+    )
+    db.add(version)
+    db.flush()
+    for marker in markers:
+        db.add(
+            DatasetVersionItem(
+                dataset_version_id=version.id,
+                profile_key=marker.profile_key,
+                employee_id=marker.employee_id,
+                status=marker.status,
+                checksum=marker.checksum,
+            )
+        )
+    db.flush()
+    return version
+
+
+def get_latest_version(db: Session) -> DatasetVersion | None:
+    return db.scalar(select(DatasetVersion).order_by(desc(DatasetVersion.created_at), desc(DatasetVersion.id)).limit(1))
+
+
+def get_version_by_hash(db: Session, dataset_hash: str | None) -> DatasetVersion | None:
+    if not dataset_hash:
+        return None
+    return db.scalar(select(DatasetVersion).where(DatasetVersion.hash == dataset_hash).limit(1))
+
+
+def service_info_payload(db: Session, *, tools: list[dict], service_name: str, backend_version: str, protocol_version: str) -> dict:
+    version = get_or_create_current_version(db)
+    db.commit()
+    return {
+        "service_name": service_name,
+        "backend_version": backend_version,
+        "protocolVersion": protocol_version,
+        "tools": tools,
+        "dataset": _version_payload(version),
+    }
+
+
+def sync_employees_payload(db: Session, *, client_hash: str | None = None, include_data: bool = True) -> dict:
+    current = get_or_create_current_version(db)
+    db.commit()
+    if not client_hash:
+        return _full_sync_payload(db, current, include_data=include_data, reason=None)
+    if client_hash == current.hash:
+        return {
+            "mode": "delta",
+            "from_hash": client_hash,
+            "to_hash": current.hash,
+            "dataset": _version_payload(current),
+            "changes": {"added": [], "updated": [], "dismissed": [], "removed": []},
+        }
+
+    previous = get_version_by_hash(db, client_hash)
+    if not previous:
+        return _full_sync_payload(db, current, include_data=include_data, reason="unknown_client_hash", from_hash=client_hash)
+
+    return _delta_sync_payload(db, previous, current, include_data=include_data)
+
+
+def _full_sync_payload(
+    db: Session,
+    current: DatasetVersion,
+    *,
+    include_data: bool,
+    reason: str | None,
+    from_hash: str | None = None,
+) -> dict:
+    employees = db.scalars(select(Employee).order_by(Employee.profile_key)).all()
+    payload = {
+        "mode": "full",
+        "from_hash": from_hash,
+        "to_hash": current.hash,
+        "dataset": _version_payload(current),
+        "items": [_employee_payload(employee, include_data=include_data) for employee in employees],
+    }
+    if reason:
+        payload["reason"] = reason
+    return payload
+
+
+def _delta_sync_payload(db: Session, previous: DatasetVersion, current: DatasetVersion, *, include_data: bool) -> dict:
+    previous_items = _items_by_profile_key(previous)
+    current_items = _items_by_profile_key(current)
+    employees = {employee.profile_key: employee for employee in db.scalars(select(Employee)).all()}
+    added = []
+    updated = []
+    dismissed = []
+    removed = []
+
+    for profile_key, current_item in sorted(current_items.items()):
+        previous_item = previous_items.get(profile_key)
+        employee = employees.get(profile_key)
+        if not previous_item:
+            if employee:
+                added.append(_employee_payload(employee, include_data=include_data))
+            continue
+        if previous_item.checksum == current_item.checksum and previous_item.status == current_item.status:
+            continue
+        if current_item.status == "dismissed":
+            dismissed.append(_tombstone(profile_key, current_item.status, employee))
+        elif employee:
+            updated.append(_employee_payload(employee, include_data=include_data))
+
+    for profile_key, previous_item in sorted(previous_items.items()):
+        if profile_key not in current_items:
+            removed.append(_tombstone(profile_key, "removed", employees.get(profile_key), checksum=previous_item.checksum))
+
+    return {
+        "mode": "delta",
+        "from_hash": previous.hash,
+        "to_hash": current.hash,
+        "dataset": _version_payload(current),
+        "changes": {
+            "added": added,
+            "updated": updated,
+            "dismissed": dismissed,
+            "removed": removed,
+        },
+    }
+
+
+def _items_by_profile_key(version: DatasetVersion) -> dict[str, DatasetVersionItem]:
+    return {item.profile_key: item for item in version.items}
+
+
+def _version_payload(version: DatasetVersion) -> dict:
+    return {
+        "hash": version.hash,
+        "previous_hash": version.previous_hash,
+        "created_at": version.created_at.isoformat() if version.created_at else None,
+        "crawl_run_id": version.crawl_run_id,
+        "employee_count": version.employee_count,
+        "active_count": version.active_count,
+        "dismissed_count": version.dismissed_count,
+    }
+
+
+def _employee_marker(employee: Employee) -> EmployeeMarker:
+    return EmployeeMarker(
+        profile_key=employee.profile_key,
+        employee_id=employee.id,
+        status=employee.status,
+        checksum=employee.current_checksum or _payload_hash(employee.current_data or {}),
+    )
+
+
+def _dataset_hash(markers: list[EmployeeMarker]) -> str:
+    payload = [
+        {"profile_key": marker.profile_key, "status": marker.status, "checksum": marker.checksum}
+        for marker in sorted(markers, key=lambda item: item.profile_key)
+    ]
+    return _payload_hash(payload)
+
+
+def _payload_hash(value: object) -> str:
+    payload = json.dumps(value, ensure_ascii=False, sort_keys=True, separators=(",", ":"), default=str)
+    return hashlib.sha256(payload.encode("utf-8")).hexdigest()
+
+
+def _employee_payload(employee: Employee, *, include_data: bool) -> dict:
+    payload = {
+        "profile_key": employee.profile_key,
+        "profile_id": employee.profile_id,
+        "full_name": employee.full_name,
+        "status": employee.status,
+        "canonical_url": employee.canonical_url,
+        "last_seen_at": employee.last_seen_at.isoformat() if employee.last_seen_at else None,
+        "dismissed_at": employee.dismissed_at.isoformat() if employee.dismissed_at else None,
+        "checksum": employee.current_checksum or _payload_hash(employee.current_data or {}),
+    }
+    if include_data:
+        payload["data"] = employee.current_data
+    return payload
+
+
+def _tombstone(profile_key: str, status: str, employee: Employee | None, *, checksum: str | None = None) -> dict:
+    payload = {
+        "profile_key": profile_key,
+        "status": status,
+        "checksum": checksum or (employee.current_checksum if employee else None),
+    }
+    if employee:
+        payload.update(
+            {
+                "profile_id": employee.profile_id,
+                "full_name": employee.full_name,
+                "canonical_url": employee.canonical_url,
+                "dismissed_at": employee.dismissed_at.isoformat() if employee.dismissed_at else None,
+            }
+        )
+    return payload

app/static/admin.css

@@ -171,6 +171,10 @@
   background: transparent;
 }
 
+.button--compact {
+  padding: 8px 12px;
+}
+
 .code {
   overflow-x: auto;
   padding: 14px;
@@ -201,11 +205,34 @@
   gap: 10px;
 }
 
+.employee-card__actions {
+  display: grid;
+  justify-items: end;
+  gap: 10px;
+}
+
 .employee-card__title {
   margin: 0;
   font-size: 24px;
 }
 
+.employee-card__notice {
+  margin: 0;
+  padding: 12px 14px;
+  border-radius: 8px;
+  font-weight: 700;
+}
+
+.employee-card__notice--success {
+  color: #065f46;
+  background: #d1fae5;
+}
+
+.employee-card__notice--error {
+  color: #991b1b;
+  background: #fee2e2;
+}
+
 .employee-card__section {
   padding: 20px;
   background: #ffffff;

app/templates/employee_detail.html

@@ -7,8 +7,18 @@
       <h2 class="employee-card__title">{{ employee_view.full_name or employee.profile_key }}</h2>
       <span class="badge {% if employee_view.status == "dismissed" %}badge--dismissed{% endif %}">{{ employee_view.status_display }}</span>
     </div>
-    <a class="admin__link" href="{{ employee_view.canonical_url }}">{{ employee_view.canonical_url }}</a>
+    <div class="employee-card__actions">
+      <form method="post" action="/admin/employees/{{ employee.id }}/refresh">
+        <button class="button button--compact" type="submit">Обновить данные</button>
+      </form>
+      <a class="admin__link" href="{{ employee_view.canonical_url }}">{{ employee_view.canonical_url }}</a>
+    </div>
   </div>
+  {% if refresh_status == "success" %}
+  <p class="employee-card__notice employee-card__notice--success">Данные сотрудника обновлены.</p>
+  {% elif refresh_status == "error" %}
+  <p class="employee-card__notice employee-card__notice--error">Не удалось обновить данные сотрудника.</p>
+  {% endif %}
 
   <section class="employee-card__section">
     <h3 class="employee-section__title">Основная информация</h3>

app/version.py

@@ -1,3 +1,3 @@
-APP_VERSION = "0.4.6"
+APP_VERSION = "0.5.0"
-FRONTEND_VERSION = "0.4.6"
+FRONTEND_VERSION = "0.5.0"
-BACKEND_VERSION = "0.4.6"
+BACKEND_VERSION = "0.5.0"

migrations/004_dataset_versions.sql

@@ -0,0 +1,29 @@
+CREATE TABLE IF NOT EXISTS dataset_versions (
+  id SERIAL PRIMARY KEY,
+  hash VARCHAR(64) NOT NULL UNIQUE,
+  previous_hash VARCHAR(64),
+  crawl_run_id INTEGER REFERENCES crawl_runs(id),
+  employee_count INTEGER NOT NULL DEFAULT 0,
+  active_count INTEGER NOT NULL DEFAULT 0,
+  dismissed_count INTEGER NOT NULL DEFAULT 0,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS ix_dataset_versions_created_at
+  ON dataset_versions (created_at);
+
+CREATE TABLE IF NOT EXISTS dataset_version_items (
+  id SERIAL PRIMARY KEY,
+  dataset_version_id INTEGER NOT NULL REFERENCES dataset_versions(id),
+  profile_key VARCHAR(255) NOT NULL,
+  employee_id INTEGER REFERENCES employees(id),
+  status VARCHAR(32) NOT NULL,
+  checksum VARCHAR(64) NOT NULL,
+  CONSTRAINT uq_dataset_version_items_version_profile UNIQUE (dataset_version_id, profile_key)
+);
+
+CREATE INDEX IF NOT EXISTS ix_dataset_version_items_hash
+  ON dataset_version_items (dataset_version_id);
+
+CREATE INDEX IF NOT EXISTS ix_dataset_version_items_profile_key
+  ON dataset_version_items (profile_key);

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "miem-workers"
-version = "0.4.6"
+version = "0.5.0"
 description = "MIEM employees parser, admin API, and MCP server"
 requires-python = ">=3.11"
 dependencies = [

tests/test_api_mcp.py

@@ -1,7 +1,9 @@
+import json
 from datetime import datetime, timezone
+from types import SimpleNamespace
 
 from fastapi.testclient import TestClient
-from sqlalchemy import create_engine
+from sqlalchemy import create_engine, select
 from sqlalchemy.orm import sessionmaker
 from sqlalchemy.pool import StaticPool
 
@@ -18,7 +20,7 @@ def test_health_returns_versions():
     response = client.get("/api/health")
 
     assert response.status_code == 200
-    assert response.json()["backend_version"] == "0.4.6"
+    assert response.json()["backend_version"] == "0.5.0"
 
 
 def test_mcp_lists_tools_without_auth_and_ignores_auth_header():
@@ -49,7 +51,10 @@ def test_mcp_lists_tools_without_auth_and_ignores_auth_header():
 
     assert without_auth.status_code == 200
     assert with_auth.status_code == 200
-    assert without_auth.json()["result"]["tools"][0]["name"] == "search_employees"
+    tool_names = {tool["name"] for tool in without_auth.json()["result"]["tools"]}
+    assert "search_employees" in tool_names
+    assert "get_service_info" in tool_names
+    assert "sync_employees" in tool_names
     assert any(tool["name"] == "get_crawl_run_details" for tool in without_auth.json()["result"]["tools"])
     assert with_auth.json()["result"]["tools"] == without_auth.json()["result"]["tools"]
 
@@ -107,6 +112,128 @@ def test_mcp_search_employees_returns_matching_employee():
     app.dependency_overrides.clear()
 
 
+def test_mcp_service_info_returns_tools_and_dataset_hash():
+    engine = create_engine(
+        "sqlite:///:memory:",
+        connect_args={"check_same_thread": False},
+        poolclass=StaticPool,
+    )
+    Base.metadata.create_all(engine)
+    Session = sessionmaker(bind=engine)
+    session = Session()
+    session.add(
+        Employee(
+            profile_key="staff:alpha",
+            profile_type="staff",
+            profile_id="alpha",
+            canonical_url="https://www.hse.ru/staff/alpha",
+            full_name="Alpha Person",
+            status="active",
+            current_checksum="a" * 64,
+            current_data={"sections": []},
+        )
+    )
+    session.commit()
+    session.close()
+
+    def override_db():
+        db = Session()
+        try:
+            yield db
+        finally:
+            db.close()
+
+    app.dependency_overrides[get_db] = override_db
+    client = TestClient(app)
+
+    response = client.post(
+        "/mcp",
+        json={"jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": {"name": "get_service_info", "arguments": {}}},
+    )
+
+    assert response.status_code == 200
+    payload = json.loads(response.json()["result"]["content"][0]["text"])
+    assert payload["service_name"] == "miem-employees"
+    assert payload["backend_version"] == "0.5.0"
+    assert payload["dataset"]["hash"]
+    assert any(tool["name"] == "sync_employees" for tool in payload["tools"])
+
+    app.dependency_overrides.clear()
+
+
+def test_mcp_sync_employees_full_empty_and_unknown_hash_modes():
+    engine = create_engine(
+        "sqlite:///:memory:",
+        connect_args={"check_same_thread": False},
+        poolclass=StaticPool,
+    )
+    Base.metadata.create_all(engine)
+    Session = sessionmaker(bind=engine)
+    session = Session()
+    session.add(
+        Employee(
+            profile_key="staff:alpha",
+            profile_type="staff",
+            profile_id="alpha",
+            canonical_url="https://www.hse.ru/staff/alpha",
+            full_name="Alpha Person",
+            status="active",
+            current_checksum="a" * 64,
+            current_data={"sections": [{"type": "paragraphs"}]},
+        )
+    )
+    session.commit()
+    session.close()
+
+    def override_db():
+        db = Session()
+        try:
+            yield db
+        finally:
+            db.close()
+
+    app.dependency_overrides[get_db] = override_db
+    client = TestClient(app)
+
+    full_response = client.post(
+        "/mcp",
+        json={"jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": {"name": "sync_employees", "arguments": {}}},
+    )
+    full_payload = json.loads(full_response.json()["result"]["content"][0]["text"])
+    current_hash = full_payload["to_hash"]
+
+    empty_response = client.post(
+        "/mcp",
+        json={
+            "jsonrpc": "2.0",
+            "id": 2,
+            "method": "tools/call",
+            "params": {"name": "sync_employees", "arguments": {"client_hash": current_hash}},
+        },
+    )
+    empty_payload = json.loads(empty_response.json()["result"]["content"][0]["text"])
+
+    unknown_response = client.post(
+        "/mcp",
+        json={
+            "jsonrpc": "2.0",
+            "id": 3,
+            "method": "tools/call",
+            "params": {"name": "sync_employees", "arguments": {"client_hash": "missing"}},
+        },
+    )
+    unknown_payload = json.loads(unknown_response.json()["result"]["content"][0]["text"])
+
+    assert full_payload["mode"] == "full"
+    assert full_payload["items"][0]["data"] == {"sections": [{"type": "paragraphs"}]}
+    assert empty_payload["mode"] == "delta"
+    assert empty_payload["changes"] == {"added": [], "updated": [], "dismissed": [], "removed": []}
+    assert unknown_payload["mode"] == "full"
+    assert unknown_payload["reason"] == "unknown_client_hash"
+
+    app.dependency_overrides.clear()
+
+
 def test_mcp_get_crawl_run_details_returns_changes():
     engine = create_engine(
         "sqlite:///:memory:",
@@ -248,3 +375,56 @@ def test_api_employees_and_stats_require_admin_session():
     assert run_details.json()["changes"]["new"][0]["full_name"] == "Alpha Person"
 
     app.dependency_overrides.clear()
+
+
+def test_admin_refresh_employee_route_updates_only_requested_employee(monkeypatch):
+    engine = create_engine(
+        "sqlite:///:memory:",
+        connect_args={"check_same_thread": False},
+        poolclass=StaticPool,
+    )
+    Base.metadata.create_all(engine)
+    Session = sessionmaker(bind=engine)
+    db = Session()
+    db.add(
+        Employee(
+            profile_key="org_person:133709486",
+            profile_type="org_person",
+            profile_id="133709486",
+            canonical_url="https://www.hse.ru/org/persons/133709486",
+            full_name="Будков Юрий Алексеевич",
+            status="active",
+        )
+    )
+    db.commit()
+    employee_id = db.scalar(select(Employee.id))
+    db.close()
+
+    settings = Settings(admin_username="admin", admin_password="password", session_secret="session-secret")
+
+    def override_db():
+        session = Session()
+        try:
+            yield session
+        finally:
+            session.close()
+
+    calls = []
+
+    def fake_refresh_employee(db, refreshed_employee, route_settings):
+        calls.append((refreshed_employee.id, route_settings))
+        return SimpleNamespace(status="completed")
+
+    app.dependency_overrides[get_db] = override_db
+    app.dependency_overrides[get_settings] = lambda: settings
+    monkeypatch.setattr("app.admin.refresh_employee", fake_refresh_employee)
+    client = TestClient(app)
+    client.cookies.set(SESSION_COOKIE, sign_session("admin", settings))
+
+    response = client.post(f"/admin/employees/{employee_id}/refresh", follow_redirects=False)
+
+    assert response.status_code == 303
+    assert response.headers["location"] == f"/admin/employees/{employee_id}?refresh_status=success"
+    assert calls == [(employee_id, settings)]
+
+    app.dependency_overrides.clear()

tests/test_dataset_versions.py

@@ -0,0 +1,88 @@
+from datetime import datetime, timezone
+
+from app.models import Employee
+from app.services.dataset_versions import get_or_create_current_version, sync_employees_payload
+
+
+def _employee(profile_key: str, checksum: str, *, status: str = "active") -> Employee:
+    return Employee(
+        profile_key=profile_key,
+        profile_type=profile_key.split(":", 1)[0],
+        profile_id=profile_key.split(":", 1)[1],
+        canonical_url=f"https://www.hse.ru/{profile_key}",
+        full_name=profile_key,
+        status=status,
+        first_seen_at=datetime.now(timezone.utc),
+        last_seen_at=datetime.now(timezone.utc),
+        current_data={"profile_key": profile_key},
+        current_checksum=checksum,
+    )
+
+
+def test_dataset_version_hash_is_stable_for_same_employee_state(db_session):
+    db_session.add(_employee("staff:alpha", "a" * 64))
+    db_session.commit()
+
+    first = get_or_create_current_version(db_session)
+    db_session.commit()
+    second = get_or_create_current_version(db_session)
+
+    assert second.id == first.id
+    assert second.hash == first.hash
+    assert second.employee_count == 1
+
+
+def test_dataset_version_hash_changes_when_employee_checksum_changes(db_session):
+    employee = _employee("staff:alpha", "a" * 64)
+    db_session.add(employee)
+    db_session.commit()
+    first = get_or_create_current_version(db_session)
+    db_session.commit()
+
+    employee.current_checksum = "b" * 64
+    db_session.commit()
+    second = get_or_create_current_version(db_session)
+
+    assert second.hash != first.hash
+    assert second.previous_hash == first.hash
+
+
+def test_sync_employees_diff_spans_multiple_intermediate_versions(db_session):
+    alpha = _employee("staff:alpha", "a" * 64)
+    db_session.add(alpha)
+    db_session.commit()
+    first = get_or_create_current_version(db_session)
+    db_session.commit()
+
+    beta = _employee("staff:beta", "b" * 64)
+    db_session.add(beta)
+    db_session.commit()
+    get_or_create_current_version(db_session)
+    db_session.commit()
+
+    alpha.current_checksum = "c" * 64
+    alpha.current_data = {"profile_key": "staff:alpha", "changed": True}
+    db_session.commit()
+
+    payload = sync_employees_payload(db_session, client_hash=first.hash, include_data=False)
+
+    assert payload["mode"] == "delta"
+    assert [item["profile_key"] for item in payload["changes"]["added"]] == ["staff:beta"]
+    assert [item["profile_key"] for item in payload["changes"]["updated"]] == ["staff:alpha"]
+    assert payload["changes"]["dismissed"] == []
+    assert payload["changes"]["removed"] == []
+
+
+def test_sync_employees_reports_dismissed_as_tombstone(db_session):
+    alpha = _employee("staff:alpha", "a" * 64)
+    db_session.add(alpha)
+    db_session.commit()
+    first = get_or_create_current_version(db_session)
+    db_session.commit()
+
+    alpha.status = "dismissed"
+    db_session.commit()
+    payload = sync_employees_payload(db_session, client_hash=first.hash, include_data=False)
+
+    assert payload["changes"]["dismissed"][0]["profile_key"] == "staff:alpha"
+    assert payload["changes"]["dismissed"][0]["status"] == "dismissed"

tests/test_employee_detail_template.py

@@ -27,4 +27,6 @@ def test_employee_detail_template_is_human_readable():
     assert "Дата увольнения" in template
     assert "Тип профиля" in template
     assert "ID профиля" in template
+    assert "Обновить данные" in template
+    assert 'action="/admin/employees/{{ employee.id }}/refresh"' in template
     assert "Снапшоты" in template

tests/test_parser.py

@@ -1,6 +1,6 @@
 from bs4 import BeautifulSoup
 
-from app.parser.profile import enrich_sections_from_hse_widgets, extract_person_tabs
+from app.parser.profile import enrich_sections_from_hse_widgets, extract_person_tabs, extract_sections
 from app.parser.profile_url import normalize_profile_url, parse_profile_identity
 
 
@@ -184,3 +184,34 @@ def test_enrich_sections_from_hse_widgets_loads_grouped_publications():
     assert [item["id"] for item in publications["publications"]] == ["146366790", "146367323"]
     assert publications["publications"][0]["url"] == "https://publications.hse.ru/view/146366790"
     assert publications["publications"][1]["url"] == "https://publications.hse.ru/view/146367323"
+
+
+def test_news_heading_with_publications_word_does_not_absorb_widget_publications():
+    soup = BeautifulSoup(
+        """
+        <h2>Статья профессора МИЭМ вошла в число самых популярных публикаций на портале SpringerLink</h2>
+        <div class="post__text">
+          <p>Первоначально статья профессора вышла в российском журнале.</p>
+        </div>
+        <script src="/n/stat/publications/dist-w/publs.js" data-author="133709486" data-widget-name="AuthorSearch"></script>
+        """,
+        "html.parser",
+    )
+    session = FakeSession()
+
+    sections = extract_sections(soup, "https://www.hse.ru/org/persons/133709486")
+    sections = enrich_sections_from_hse_widgets(
+        session,
+        soup,
+        "https://www.hse.ru/org/persons/133709486",
+        {"User-Agent": "test"},
+        10,
+        sections,
+    )
+
+    assert sections[0]["type"] == "paragraphs"
+    assert sections[0]["title"].startswith("Статья профессора")
+    publications = [section for section in sections if section["type"] == "publications"]
+    assert len(publications) == 1
+    assert publications[0]["title"] == "Публикации и исследования"
+    assert publications[0]["publications_count"] == 1