security: устранить находки аудита, версия 1.1.7

Конфигурация и эксплуатационный слой:
- nginx: client_max_body_size 64m — восстановление из бэкапа не работало
  вовсе, дефолтный лимит в 1 МБ резал дампы (реальный экспорт ~3.4 МБ)
  с 413 ещё до backend;
- nginx: заголовки безопасности (nosniff, Referrer-Policy,
  Permissions-Policy) и полный Content-Security-Policy. Ради него
  inline-скрипт темы вынесен в public/theme-init.js;
- nginx: limit_req на /api/ — перебор пароля Basic Auth шёл со
  скоростью сети, ни блокировки, ни задержки не было;
- nginx: server_tokens off;
- порт web привязан к 127.0.0.1, адрес настраивается через
  AURUM_BIND_ADDRESS (раньше слушался на всех интерфейсах);
- backend работает от непривилегированного пользователя,
  no-new-privileges для backend и web;
- дефолты пароля Postgres сведены к одному значению в обоих сервисах,
  в .env.example описана ловушка с инициализацией тома.

Приложение:
- версия убрана из неавторизованного /api/health и отдаётся как
  app_version в GET /api/settings;
- /api/docs, /api/redoc и /api/openapi.json отключаются через
  AURUM_ENABLE_DOCS;
- текст исключения при неудачном восстановлении уходит в лог, а не
  клиенту;
- max_length для notes в схемах транзакций, активов и регулярных
  платежей (и в соответствующих полях UI);
- срок «запомнить меня» сокращён с 30 дней до 7;
- pytest обновлён до 9.0.3 (PYSEC-2026-1845), pytest-asyncio до 1.4.0;
- CI: permissions contents:read для GITHUB_TOKEN.

.env.example

@@ -1,6 +1,17 @@
 # Copy this file to .env and adjust values before running `docker compose up`.
 
 # --- Postgres ---
+# IMPORTANT, and easy to get wrong: Postgres only applies this password when
+# it FIRST creates its data directory. Change it later and the running
+# database keeps the old one — the value here and the value in the database
+# drift apart, and the backend starts failing to connect with a password
+# authentication error that looks like it came out of nowhere. So set it
+# before the first `docker compose up`. Changing it afterwards means either
+# ALTER USER inside the running database, or deleting the aurum_pgdata volume
+# (which deletes all your data — export a backup from Settings first).
+#
+# The database is not published to your host machine (no ports mapping for the
+# db service), so it's only reachable from inside the container network.
 AURUM_POSTGRES_USER=aurum
 AURUM_POSTGRES_PASSWORD=change-me
 AURUM_POSTGRES_DB=aurum
@@ -23,6 +34,13 @@ AURUM_DEFAULT_CURRENCY=USD
 # you to set this — nothing else in the app is affected.
 AURUM_COINGECKO_API_KEY=
 
+# Swagger UI / ReDoc / openapi.json at /api/docs. Left on: the REST API is a
+# documented feature (see DOCS.md), and when basic auth is configured these
+# sit behind it like every other /api/ route. Set it to false on an instance
+# that's reachable from the internet without basic auth — an open
+# openapi.json is a complete machine-readable map of every endpoint.
+AURUM_ENABLE_DOCS=true
+
 # --- Basic auth (STRONGLY recommended if this instance is reachable from
 # anywhere other than your own machine) ---
 # Aurum has no login system of its own — it's built for one person
@@ -36,3 +54,10 @@ AURUM_BASIC_AUTH_PASSWORD=
 
 # --- Ports exposed on your host machine ---
 AURUM_WEB_PORT=3000
+
+# Which host interface Aurum listens on. The default, 127.0.0.1, means "this
+# machine only" — nothing else on your network can reach it. Change it to
+# 0.0.0.0 to open it up (phone on the same Wi-Fi, another PC, a reverse
+# proxy), but set the basic auth variables above first: without them the app
+# has no password, and this is the line that decides who can knock.
+AURUM_BIND_ADDRESS=127.0.0.1

.github/workflows/ci.yml

@@ -8,6 +8,12 @@ on:
   push:
     branches: [main]
 
+# Least privilege for GITHUB_TOKEN: these jobs only ever read the checkout.
+# Without this the token inherits the repository default, which can include
+# write access — handed to every third-party action in the run.
+permissions:
+  contents: read
+
 jobs:
   backend-tests:
     runs-on: ubuntu-latest

DOCS.md

@@ -116,9 +116,13 @@ string.
 
 ### `GET /api/health`
 
-No auth required. Returns `{"status": "ok", "version": "1.1.0"}` — `version` is the running app's
-version, the same value shown in the UI under Settings. Use this to check the backend is up before
-hitting anything else.
+No auth required. Returns `{"status": "ok"}`. Use this to check the backend is up before hitting
+anything else.
+
+This response deliberately carries nothing else. It used to include the running app version, but
+this is the one endpoint served without authentication — handing the exact release to anyone who
+can reach the instance tells them which known issues it still has. The version now comes back as
+`app_version` from `GET /settings`, which sits behind auth like everything else.
 
 ## Accounts
 
@@ -763,10 +767,13 @@ Single row, created automatically on first run — there's nothing to create, on
   "net_worth_decline_threshold_months": 2,
   "risky_allocation_threshold_percent": 20,
   "idle_cash_threshold_amount": "1000.00",
-  "idle_cash_threshold_days": 60
+  "idle_cash_threshold_days": 60,
+  "app_version": "1.1.7"
 }
 ```
 
+- `app_version`: read-only, ignored on `PATCH` — the running app's release, shown in the UI under
+  Settings. It lives here rather than on the unauthenticated `/health`.
 - `currency`: 3-letter uppercase code — display-only, no conversion.
 - `negative_cash_flow_threshold_months` / `net_worth_decline_threshold_months`: consecutive months
   before the corresponding alert fires (`1`–`24`).

backend/Dockerfile

@@ -14,6 +14,19 @@ RUN pip install --upgrade pip && pip install -r requirements.txt
 
 COPY . .
 
+# Drop root. The app never writes to disk (PYTHONDONTWRITEBYTECODE above, no
+# uploads, no local cache), so it only needs read access to /app — which is
+# why the source stays root-owned and is merely readable here. Anything that
+# manages to execute code in this container now lands as an unprivileged user
+# instead of root, which is the difference between a bad day and a container
+# escape.
+#
+# Note for running the test suite (see tests/README.md): installing
+# requirements-dev.txt inside the container now needs `--user`, or run the
+# exec with `-u root`.
+RUN useradd --create-home --uid 10001 aurum
+USER aurum
+
 EXPOSE 8000
 
 HEALTHCHECK --interval=10s --timeout=5s --start-period=10s --retries=5 \

backend/app/api/routes/settings.py

@@ -9,6 +9,9 @@ from app.services.settings_service import get_or_create_app_settings
 router = APIRouter(prefix="/settings", tags=["settings"])
 
 
+# Both routes still return the ORM row as-is: AppSettingsRead.app_version
+# isn't a stored column, it defaults to APP_VERSION when FastAPI validates
+# the response (see schemas/settings.py).
 @router.get("", response_model=AppSettingsRead)
 async def read_settings(session: AsyncSession = Depends(get_session)) -> AppSettings:
     return await get_or_create_app_settings(session)

backend/app/core/config.py

@@ -4,10 +4,11 @@ from functools import lru_cache
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 # Single source of truth for the running app's version — surfaced in the API
-# title, /api/health (which the frontend reads to show it in Settings), and
-# embedded in exported backups so an old file can be told apart from a
-# current one.
-APP_VERSION = "1.1.6"
+# title, in GET /api/settings as app_version (which the frontend reads to show
+# it in Settings; it deliberately does NOT ride on the unauthenticated
+# /api/health), and embedded in exported backups so an old file can be told
+# apart from a current one.
+APP_VERSION = "1.1.7"
 
 
 class Settings(BaseSettings):
@@ -35,6 +36,14 @@ class Settings(BaseSettings):
     # rather than silently hitting CoinGecko's much stingier keyless tier.
     coingecko_api_key: str = ""
 
+    # Swagger/ReDoc/openapi.json at /api/docs. On by default because the API
+    # is a documented feature of this app (see DOCS.md), and because when
+    # basic auth is configured these sit behind it like everything else under
+    # /api/. Turn it off on an instance that's reachable from the internet
+    # *without* basic auth: an open /api/openapi.json is a complete,
+    # machine-readable map of every endpoint and payload shape.
+    enable_docs: bool = True
+
     @property
     def database_url(self) -> str:
         return (

backend/app/main.py

@@ -46,9 +46,12 @@ app = FastAPI(
     # backend (see frontend/nginx.conf) — everything else falls through to
     # the SPA's index.html, which is why the defaults (/docs, /openapi.json)
     # would silently 404 through the reverse proxy.
-    docs_url="/api/docs",
-    redoc_url="/api/redoc",
-    openapi_url="/api/openapi.json",
+    # All three go away together when AURUM_ENABLE_DOCS=false — leaving
+    # openapi.json reachable would keep handing out the full API map even
+    # with the Swagger UI itself switched off.
+    docs_url="/api/docs" if settings.enable_docs else None,
+    redoc_url="/api/redoc" if settings.enable_docs else None,
+    openapi_url="/api/openapi.json" if settings.enable_docs else None,
 )
 
 # CORS stays off unless someone deliberately opens it, and credentials are
@@ -88,7 +91,10 @@ app.include_router(crypto.router, prefix="/api")
 
 @app.get("/api/health")
 async def health() -> dict[str, str]:
-    # version rides along so the frontend's Settings page can show which
-    # release is actually running without a separate authenticated endpoint —
-    # this route is already auth_basic-exempt for Docker's HEALTHCHECK.
-    return {"status": "ok", "version": APP_VERSION}
+    # Status only. This is the one route nginx serves without auth (Docker's
+    # HEALTHCHECK and uptime monitors need it — see frontend/nginx.conf), so
+    # anything returned here is world-readable. The running version used to
+    # ride along, which told an unauthenticated caller exactly which release
+    # they were looking at, and therefore which known issues it still has;
+    # it now comes back from GET /api/settings, which is behind auth.
+    return {"status": "ok"}

backend/app/schemas/asset.py

@@ -23,7 +23,7 @@ class AssetBase(BaseModel):
     name: str = Field(min_length=1, max_length=150)
     asset_class: AssetClass
     currency: str = Field(default="USD", min_length=3, max_length=3)
-    notes: str | None = None
+    notes: str | None = Field(default=None, max_length=2000)
     capital_role: CapitalRole = CapitalRole.NEUTRAL
     # Rough self-reported monthly net cash flow — informational, not tracked
     # transactions (see Asset.monthly_cash_flow).
@@ -40,7 +40,7 @@ class AssetUpdate(BaseModel):
     name: str | None = Field(default=None, min_length=1, max_length=150)
     asset_class: AssetClass | None = None
     currency: str | None = Field(default=None, min_length=3, max_length=3)
-    notes: str | None = None
+    notes: str | None = Field(default=None, max_length=2000)
     capital_role: CapitalRole | None = None
     monthly_cash_flow: Decimal | None = Field(default=None, max_digits=14, decimal_places=2)
     risk_level: RiskLevel | None = None

backend/app/schemas/recurring.py

@@ -15,7 +15,7 @@ class RecurringTransactionCreate(BaseModel):
     amount: Decimal = Field(gt=0)
     description: str = Field(min_length=1, max_length=255)
     merchant: str | None = None
-    notes: str | None = None
+    notes: str | None = Field(default=None, max_length=2000)
     frequency: RecurringFrequency
     anchor_date: date_
 
@@ -35,7 +35,7 @@ class RecurringTransactionUpdate(BaseModel):
     amount: Decimal | None = Field(default=None, gt=0)
     description: str | None = Field(default=None, min_length=1, max_length=255)
     merchant: str | None = None
-    notes: str | None = None
+    notes: str | None = Field(default=None, max_length=2000)
     frequency: RecurringFrequency | None = None
     anchor_date: date_ | None = None
     is_active: bool | None = None

backend/app/schemas/settings.py

@@ -1,15 +1,25 @@
 from decimal import Decimal
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, ConfigDict, Field
+
+from app.core.config import APP_VERSION
 
 
 class AppSettingsRead(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
     currency: str
     negative_cash_flow_threshold_months: int
     net_worth_decline_threshold_months: int
     risky_allocation_threshold_percent: int
     idle_cash_threshold_amount: Decimal
     idle_cash_threshold_days: int
+    # Not a stored column: the default fills itself in when FastAPI validates
+    # the ORM row against this model, so neither route has to assemble it.
+    # It lives on this (authenticated) response rather than on /api/health,
+    # which is deliberately unauthenticated and so would hand the running
+    # version to anyone who can reach the instance.
+    app_version: str = APP_VERSION
 
 
 class AppSettingsUpdate(BaseModel):

backend/app/schemas/transaction.py

@@ -86,7 +86,7 @@ class TransactionFields(BaseModel):
     amount: Decimal = Field(gt=0, max_digits=14, decimal_places=2)
     description: str = Field(min_length=1, max_length=255)
     merchant: str | None = Field(default=None, max_length=150)
-    notes: str | None = None
+    notes: str | None = Field(default=None, max_length=2000)
     date: date_
 
     # Auto-capitalizes "траты на продукты" -> "Траты на продукты" so mixed
@@ -152,7 +152,7 @@ class TransactionUpdate(BaseModel):
     amount: Decimal | None = Field(default=None, gt=0, max_digits=14, decimal_places=2)
     description: str | None = Field(default=None, min_length=1, max_length=255)
     merchant: str | None = Field(default=None, max_length=150)
-    notes: str | None = None
+    notes: str | None = Field(default=None, max_length=2000)
     date: date_ | None = None
     # Omitted -> tags untouched; sent (even as []) -> replaces the full tag set.
     tag_ids: list[int] | None = None

backend/app/services/backup_service.py

@@ -9,6 +9,7 @@ run first, before any row is touched), and any failure during the swap rolls
 the database back to exactly where it was, so a bad file never leaves the
 app half-restored.
 """
+import logging
 from datetime import datetime, timezone
 
 from fastapi import HTTPException
@@ -46,6 +47,8 @@ from app.schemas.backup import (
     TransactionSplitBackup,
 )
 
+logger = logging.getLogger(__name__)
+
 BACKUP_FORMAT_VERSION = 1
 
 
@@ -304,4 +307,9 @@ async def restore_backup(session: AsyncSession, payload: BackupPayload) -> None:
         raise
     except Exception as exc:
         await session.rollback()
-        raise HTTPException(400, f"Restore failed, no changes were made: {exc}") from exc
+        # The exception text is SQLAlchemy's, naming tables, columns and
+        # constraints — a free map of the schema for anyone probing the API.
+        # It goes to the container log, where the operator can actually read
+        # it; the client gets told only that nothing changed.
+        logger.exception("Backup restore failed")
+        raise HTTPException(400, "Restore failed, no changes were made") from exc

backend/requirements-dev.txt

@@ -3,6 +3,6 @@
 # backend container (see backend/tests/README.md) rather than baking these
 # into the Docker image.
 -r requirements.txt
-pytest==8.3.4
-pytest-asyncio==0.25.0
+pytest==9.0.3
+pytest-asyncio==1.4.0
 httpx==0.28.1

backend/tests/README.md

@@ -14,12 +14,22 @@ lifetime, then run pytest inside the running `backend` container — it's the
 only place with network access to Postgres:
 
 ```bash
-docker compose exec backend pip install -r requirements-dev.txt
-docker compose exec backend pytest -v
+docker compose exec backend pip install --user -r requirements-dev.txt
+docker compose exec backend python -m pytest -v
 ```
 
-Re-run just `pytest -v` for subsequent runs; the `pip install` only needs
-repeating after a container restart/rebuild.
+Re-run just the `python -m pytest -v` line for subsequent runs; the
+`pip install` only needs repeating after a container restart/rebuild.
+
+Two details that both come from the container running as an unprivileged user
+(`aurum`, uid 10001 — see backend/Dockerfile) rather than root:
+
+- `--user` on the install: site-packages belongs to root and isn't writable.
+  The packages land in `/home/aurum/.local`, which isn't on `PATH`, hence
+  `python -m pytest` instead of a bare `pytest`.
+- pytest prints a `PytestCacheWarning` about not being able to write
+  `/app/.pytest_cache`. Expected — the source tree is read-only to the app
+  user by design. Tests still pass; add `-p no:cacheprovider` to silence it.
 
 ## Adding a test
 

docker-compose.yml

@@ -4,7 +4,14 @@ services:
     restart: unless-stopped
     environment:
       POSTGRES_USER: ${AURUM_POSTGRES_USER:-aurum}
-      POSTGRES_PASSWORD: ${AURUM_POSTGRES_PASSWORD:-aurum}
+      # "change-me" so this matches .env.example exactly: with no .env at all
+      # the fallback here used to be "aurum" while the template said
+      # "change-me", i.e. "the default password" meant two different things
+      # depending on whether the file existed. Postgres isn't published to the
+      # host (no ports: below), so reaching it means already being on the
+      # container network — but see .env.example for the trap that makes this
+      # worth getting right the first time.
+      POSTGRES_PASSWORD: ${AURUM_POSTGRES_PASSWORD:-change-me}
       POSTGRES_DB: ${AURUM_POSTGRES_DB:-aurum}
     volumes:
       - aurum_pgdata:/var/lib/postgresql/data
@@ -17,9 +24,17 @@ services:
   backend:
     build: ./backend
     restart: unless-stopped
+    # Nothing here ever needs to gain privileges (no setuid binaries, no sudo),
+    # so forbid it outright — this is what stops a compromised process from
+    # escalating back to root inside the container.
+    security_opt:
+      - no-new-privileges:true
     environment:
       AURUM_POSTGRES_USER: ${AURUM_POSTGRES_USER:-aurum}
-      AURUM_POSTGRES_PASSWORD: ${AURUM_POSTGRES_PASSWORD:-aurum}
+      # Must stay identical to the db service's fallback above — if the two
+      # drift, an install without .env brings up a database with one password
+      # and a backend dialling it with another.
+      AURUM_POSTGRES_PASSWORD: ${AURUM_POSTGRES_PASSWORD:-change-me}
       AURUM_POSTGRES_DB: ${AURUM_POSTGRES_DB:-aurum}
       AURUM_POSTGRES_HOST: db
       AURUM_POSTGRES_PORT: 5432
@@ -28,6 +43,7 @@ services:
       # Free CoinGecko Demo key (coingecko.com/en/api/pricing) — the Crypto
       # tab's price sync 400s with a clear message until this is set.
       AURUM_COINGECKO_API_KEY: ${AURUM_COINGECKO_API_KEY:-}
+      AURUM_ENABLE_DOCS: ${AURUM_ENABLE_DOCS:-true}
     depends_on:
       db:
         condition: service_healthy
@@ -35,8 +51,19 @@ services:
   web:
     build: ./frontend
     restart: unless-stopped
+    # nginx's master still needs root to bind :80 and to write the htpasswd
+    # file at boot (docker-entrypoint.d/20-basic-auth.sh), so this one can't
+    # drop to a non-root user without reworking both — but it can still be
+    # barred from escalating any further.
+    security_opt:
+      - no-new-privileges:true
     ports:
-      - "${AURUM_WEB_PORT:-3000}:80"
+      # Bound to loopback by default: published as "3000:80" the app answers
+      # on every interface, so anyone on the same Wi-Fi reaches it — and by
+      # default there is no password on it at all (see 20-basic-auth.sh).
+      # Set AURUM_BIND_ADDRESS=0.0.0.0 to reach it from other devices, but
+      # set AURUM_BASIC_AUTH_USER/PASSWORD before you do.
+      - "${AURUM_BIND_ADDRESS:-127.0.0.1}:${AURUM_WEB_PORT:-3000}:80"
     environment:
       # Both unset = no login screen at all. See frontend/docker-entrypoint.d/20-basic-auth.sh.
       AURUM_BASIC_AUTH_USER: ${AURUM_BASIC_AUTH_USER:-}

frontend/index.html

@@ -6,24 +6,10 @@
     <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover" />
     <meta name="theme-color" content="#0b0b0b" />
     <title>Aurum — Личные финансы</title>
-    <script>
-      // Applies the saved theme (light/dark/system) to <html> before the
-      // first paint, so an explicit override never flashes the wrong theme
-      // for a frame while React/lib/theme.ts loads. "system" needs no
-      // attribute at all — index.css's prefers-color-scheme media query
-      // already handles that case with zero JS.
-      (function () {
-        var stored = localStorage.getItem("aurum:theme");
-        if (stored === "light" || stored === "dark") {
-          document.documentElement.setAttribute("data-theme", stored);
-        }
-        var isDark =
-          stored === "dark" || (stored !== "light" && window.matchMedia("(prefers-color-scheme: dark)").matches);
-        var meta = document.querySelector('meta[name="theme-color"]');
-        // Kept in sync by hand with index.css's --surface-0 light/dark values.
-        if (meta) meta.setAttribute("content", isDark ? "#0d0d0d" : "#f9f9f7");
-      })();
-    </script>
+    <!-- Runs before the first paint to avoid a wrong-theme flash. Kept in its
+         own file (public/theme-init.js), not inline, so the CSP in
+         frontend/nginx.conf can forbid inline scripts entirely. -->
+    <script src="/theme-init.js"></script>
   </head>
   <body>
     <div id="root"></div>

frontend/nginx.conf

@@ -1,9 +1,53 @@
+# Rate limit shared by every /api/ request. This file is included from inside
+# nginx's http{} block, which is the only context where a zone can be declared.
+# Basic Auth has no lockout, no captcha and no delay of its own, so without
+# this the single instance password can be guessed at network speed. The rate
+# is deliberately well above what the UI needs (a dashboard load fires a
+# dozen or so queries at once, and CSV import pages through history) and still
+# cuts a brute-force attempt by orders of magnitude.
+limit_req_zone $binary_remote_addr zone=aurum_api:10m rate=20r/s;
+
 server {
     listen 80;
     server_name _;
     root /usr/share/nginx/html;
     index index.html;
 
+    # Don't advertise the exact nginx version — it turns "is this instance
+    # vulnerable to X" into a lookup instead of a probe.
+    server_tokens off;
+
+    # Security headers, applied at server level so every location inherits
+    # them. Note for whoever edits this next: adding an add_header inside a
+    # location block drops ALL of these for that location — nginx does not
+    # merge them.
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header Referrer-Policy "no-referrer" always;
+    add_header Permissions-Policy "camera=(), microphone=(), geolocation=(), payment=()" always;
+
+    # Enforced. This started out as Content-Security-Policy-Report-Only, but
+    # Report-Only without a report-uri/report-to endpoint is inert in Firefox
+    # — it says so itself in the console: "CSP will not block and cannot
+    # report violations of this policy". So an empty console proved nothing,
+    # and the choice was between standing up a report-collecting endpoint for
+    # a single self-hosted app or enforcing and watching. Enforcing wins: a
+    # violation then shows up in every browser's console *and* as a visibly
+    # broken element, and rolling back is renaming this one header.
+    #
+    # Why each part is the way it is:
+    #   script-src 'self'       — verified: the built bundle contains no eval/
+    #                             new Function, and the theme script was moved
+    #                             out of index.html into /theme-init.js.
+    #   style-src 'unsafe-inline' — unavoidable for now: 27 components use
+    #                             style={{...}} and Recharts injects inline
+    #                             styles of its own.
+    #   img-src ... coingecko   — coin icons come straight from CoinGecko's
+    #                             CDN (thumb_url on a holding); both the
+    #                             current and the older asset host are listed.
+    #   img-src blob:           — the chart/download paths build blob URLs.
+    #   connect-src 'self'      — the API is same-origin; nothing else is called.
+    add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob: https://coin-images.coingecko.com https://assets.coingecko.com; font-src 'self'; connect-src 'self'; object-src 'none'; base-uri 'self'; form-action 'self'; frame-ancestors 'none'" always;
+
     # Always open, no auth — this is what Docker's own HEALTHCHECK and any
     # external uptime monitor hit, and it returns nothing but {"status":"ok"}.
     # docker-entrypoint.d/20-basic-auth.sh writes basic-auth.conf; without an
@@ -11,6 +55,11 @@ server {
     # sets below and healthchecks would start failing with 401.
     location = /api/health {
         auth_basic off;
+        # Rate limited too: this is the one unauthenticated route, so it's the
+        # one an attacker can hammer for free. Docker's HEALTHCHECK hits it
+        # once every 10s, nowhere near the limit.
+        limit_req zone=aurum_api burst=40 nodelay;
+        limit_req_status 429;
         proxy_pass http://backend:8000/api/health;
         proxy_set_header Host $host;
     }
@@ -20,6 +69,21 @@ server {
     # aren't set, so this is a no-op by default) — see docker-entrypoint.d/.
     location /api/ {
         include /etc/nginx/basic-auth.conf;
+
+        limit_req zone=aurum_api burst=40 nodelay;
+        limit_req_status 429;
+
+        # Backup restore posts the whole snapshot as one JSON body, and a
+        # real one runs to several MB — nginx's 1m default silently rejected
+        # those with a 413 before they ever reached the backend, which meant
+        # backups could be taken but not restored. Bounded on purpose rather
+        # than disabled (0), so an oversized upload still can't exhaust memory.
+        client_max_body_size 64m;
+        client_body_timeout 60s;
+        # A large restore rewrites every table in one transaction; the default
+        # 60s read timeout can cut that off midway.
+        proxy_read_timeout 120s;
+
         proxy_pass http://backend:8000/api/;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;

frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "aurum-frontend",
   "private": true,
-  "version": "1.1.6",
+  "version": "1.1.7",
   "type": "module",
   "scripts": {
     "dev": "vite",

frontend/public/theme-init.js

@@ -0,0 +1,24 @@
+// Applies the saved theme (light/dark/system) to <html> before the first
+// paint, so an explicit override never flashes the wrong theme for a frame
+// while React/lib/theme.ts loads. "system" needs no attribute at all —
+// index.css's prefers-color-scheme media query already handles that case
+// with zero JS.
+//
+// Lives in public/ as its own file rather than inline in index.html so the
+// Content-Security-Policy in frontend/nginx.conf can forbid inline scripts
+// outright — an inline block would need either 'unsafe-inline' (which gives
+// up most of what CSP buys) or a hash that has to be regenerated by hand on
+// every edit to these lines. Loaded as a plain synchronous <script src> in
+// <head>, which still blocks the first paint, so the no-flash behaviour is
+// unchanged.
+(function () {
+  var stored = localStorage.getItem("aurum:theme");
+  if (stored === "light" || stored === "dark") {
+    document.documentElement.setAttribute("data-theme", stored);
+  }
+  var isDark =
+    stored === "dark" || (stored !== "light" && window.matchMedia("(prefers-color-scheme: dark)").matches);
+  var meta = document.querySelector('meta[name="theme-color"]');
+  // Kept in sync by hand with index.css's --surface-0 light/dark values.
+  if (meta) meta.setAttribute("content", isDark ? "#0d0d0d" : "#f9f9f7");
+})();

frontend/src/api/health.ts

@@ -1,6 +0,0 @@
-import { api } from "@/api/client";
-import type { HealthStatus } from "@/types";
-
-export function fetchHealth() {
-  return api.get<HealthStatus>("/health");
-}

frontend/src/components/networth/AssetFormModal.tsx

@@ -208,6 +208,7 @@ export function AssetFormModal({ open, onClose, asset }: AssetFormModalProps) {
           <Label htmlFor="asset-notes">{t("netWorth.form.notesLabel")}</Label>
           <Input
             id="asset-notes"
+            maxLength={2000}
             value={form.notes}
             onChange={(event) => setForm((prev) => ({ ...prev, notes: event.target.value }))}
           />

frontend/src/components/transactions/TransactionFormModal.tsx

@@ -485,8 +485,11 @@ export function TransactionFormModal({ open, onClose, transaction }: Transaction
 
         <div>
           <Label htmlFor="notes">{t("transactions.form.notesLabel")}</Label>
+          {/* Matches the server's max_length on notes — without it an overlong
+              note only fails on save, as an untranslated 422. */}
           <Input
             id="notes"
+            maxLength={2000}
             value={form.notes}
             onChange={(event) => setForm((prev) => ({ ...prev, notes: event.target.value }))}
           />

frontend/src/hooks/useHealth.ts

@@ -1,8 +0,0 @@
-import { useQuery } from "@tanstack/react-query";
-import { fetchHealth } from "@/api/health";
-
-// The running version only changes on a deploy (a full page reload), so
-// there's no need to ever refetch within a session.
-export function useHealth() {
-  return useQuery({ queryKey: ["health"], queryFn: fetchHealth, staleTime: Infinity });
-}

frontend/src/lib/auth.ts

@@ -20,7 +20,11 @@ import { useSyncExternalStore } from "react";
  */
 const SESSION_KEY = "aurum:basicAuth";
 const REMEMBER_KEY = "aurum:basicAuth:remember";
-const REMEMBER_DAYS = 30;
+// 7, not 30: what's stored is the Basic Auth header, i.e. the instance
+// password recoverable in plaintext by anyone who can read localStorage (an
+// XSS, a browser extension, someone with the machine). It can't be revoked
+// server-side, so the only lever on that exposure is how long it sits there.
+const REMEMBER_DAYS = 7;
 const REMEMBER_MS = REMEMBER_DAYS * 24 * 60 * 60 * 1000;
 
 interface RememberedEntry {

frontend/src/lib/i18n.ts

@@ -49,7 +49,7 @@ const ru = {
   "auth.subtitle": "Личные финансы",
   "auth.usernameLabel": "Логин",
   "auth.passwordLabel": "Пароль",
-  "auth.rememberMe": "Запомнить меня на 30 дней",
+  "auth.rememberMe": "Запомнить меня на 7 дней",
   "auth.submitButton": "Войти",
   "auth.submitting": "Вход…",
   "auth.errorInvalidCredentials": "Неверный логин или пароль",
@@ -567,7 +567,7 @@ const en: Record<keyof typeof ru, string> = {
   "auth.subtitle": "Personal finance",
   "auth.usernameLabel": "Username",
   "auth.passwordLabel": "Password",
-  "auth.rememberMe": "Remember me for 30 days",
+  "auth.rememberMe": "Remember me for 7 days",
   "auth.submitButton": "Sign in",
   "auth.submitting": "Signing in…",
   "auth.errorInvalidCredentials": "Incorrect username or password",

frontend/src/pages/SettingsPage.tsx

@@ -2,14 +2,14 @@ import { AlertThresholdsCard } from "@/components/settings/AlertThresholdsCard";
 import { BackupCard } from "@/components/settings/BackupCard";
 import { CurrencyCard } from "@/components/settings/CurrencyCard";
 import { PreferencesCard } from "@/components/settings/PreferencesCard";
-import { useHealth } from "@/hooks/useHealth";
+import { useAppSettings } from "@/hooks/useSettings";
 import { t } from "@/lib/i18n";
 
 export function SettingsPage() {
-  // Purely informational — if /api/health hasn't answered yet (or is
+  // Purely informational — if the settings request hasn't answered yet (or is
   // unreachable), just show nothing rather than a loading/error state for
   // one line of fine print.
-  const { data: health } = useHealth();
+  const { data: appSettings } = useAppSettings();
 
   return (
     <div className="space-y-5">
@@ -17,9 +17,9 @@ export function SettingsPage() {
       <CurrencyCard />
       <AlertThresholdsCard />
       <BackupCard />
-      {health?.version && (
+      {appSettings?.app_version && (
         <p className="text-center text-xs text-text-muted">
-          {t("settings.version", { version: health.version })}
+          {t("settings.version", { version: appSettings.app_version })}
         </p>
       )}
     </div>

frontend/src/types/index.ts

@@ -565,10 +565,8 @@ export interface AppSettings {
   risky_allocation_threshold_percent: number;
   idle_cash_threshold_amount: string;
   idle_cash_threshold_days: number;
-}
-
-export interface HealthStatus {
-  status: string;
-  version: string;
+  /** Read-only: the running backend release. Comes back here rather than
+   * from /api/health, which is served without auth. */
+  app_version: string;
 }