volumen/CHANGELOG.md

# Changelog

All notable changes to **volumen** are documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

> Versions ≤ 0.3.0 were implemented in Ruby. The current codebase is Python
> (FastAPI). Earlier release notes are kept verbatim as historical record.

## [development]

## [0.4.1] — 2026-07-27

### Fixed

- **CSP nonce chybí pro `style-src` v admin routách** — přidán `style-src 'self' 'nonce-{nonce}'` do CSP hlavičky pro `/admin` routy. Bez nonce prohlížeč blokoval všechny inline `<style>` tagy v admin šablonách.
- **`web/static/` SVG soubory chybí v distribučním kole** — přidána sekce `[tool.setuptools.package-data]` do `pyproject.toml`, aby `volumen-icon.svg` a `volumen-logo.svg` byly součástí instalovaného wheelu. Admin panel dříve vracel 500 na `/admin/icon.svg` a `/admin/logo.svg`.

## [0.4.0] — 2026-07-26

### Added

- **`volumen init`** — a new `init` subcommand is the *operational*
  bootstrap (config, data dirs, admin password, optional systemd unit). Run
  as root for a system install (default `--systemd`); pass `--local` for a
  per-user install (`~/.config/volumen/`, `~/.local/share/volumen/`). The
  command renders the production-hardened config from the same commented
  TOML template (`host = "::1"`, `env = "production"`, `trust_proxy = true`,
  `cookie_secure = true`), prompts for an admin password (`getpass`), hashes
  it via the existing scrypt helper, generates a 64-byte hex session key,
  creates the system user (`useradd --system`) and the `/etc/volumen/` /
  `/var/lib/volumen/` layout, and (with `--systemd`) installs a hardened
  `/etc/systemd/system/volumen.service` and runs
  `systemctl daemon-reload && systemctl enable --now`.
- **PyPI publish metadata** — `pyproject.toml` gains `readme`, `keywords`,
  a complete `classifiers` array (Development Status, Framework :: FastAPI,
  supported Python versions, OS, Topic, Typing), and a `[project.urls]`
  block (Homepage, Repository, Issues, Changelog, Documentation). PyPI now
  renders the README on the project page and links back to sourcedock.dev.
- **`volumen status`** — read-only inspection of an installation. Prints
  human output by default or `--json` for tooling; reports `config_exists`,
  `data_dir_exists`, `users_file_exists`, `password_hash_set`,
  `session_key_ok`, `systemd_unit_installed`, `service_active`,
  `admin_user_present`, and any issues found. Exit code is `1` when any
  issue is reported.
- **`volumen check-update`** — compares the installed version (read via
  `importlib.metadata`) with the latest release on PyPI. Uses only
  `urllib.request` (stdlib, 5 s timeout); exit code is `0` up-to-date,
  `1` update available (suggests `uv tool upgrade volumen`), `2` PyPI
  unreachable / offline / malformed response. `--json` returns the same
  fields plus `checked_at` for cron-friendly alerting.
- **`src/volumen/installer.py`** — a new module exposing `system_install`,
  `user_install`, `inspect`, plus the private `_mutate_config_text` helper
  used to apply line-anchored substitutions to the rendered TOML template
  (preserves comment blocks byte-for-byte).
- **Tests** — `tests/test_installer.py` adds 15 tests covering both install
  flows, the config-template mutator, the systemd-unit rendering,
  idempotency / backup behaviour, the `inspect` round-trip, and the
  `--systemd` + `--local` CLI guard.

### Changed

- **First-run setup is now `volumen init`** — replaces the legacy
  `install.sh`. The CLI subcommand renders config, creates data dirs,
  prompts for an admin password, generates a session key, and (with
  `--systemd`) installs and enables a hardened systemd unit. No bash
  required.
- **Publishing now targets PyPI** — `release.yml` runs
  `uv publish --token "$PYPI_TOKEN"` after `python -m build` for `v*`
  tags. Wheel + sdist continue to be uploaded to sourcedock.dev Releases as a
  secondary mirror. End users get `uv tool install volumen` and
  `pipx install volumen` as the one-line install path; no checkout
  required.
- **Distribution path is `uv tool install`** (or `pipx install`) — the
  CLI binary is installed globally; the operational bootstrap is delegated
  to `volumen init`. The legacy `uv sync` + project-local venv at
  `/opt/volumen/.venv` is gone.
- **`Config.load` round-trips config-file `content_dir` / `users_file`** —
  the rendered template places these two keys after the `[server]` header,
  so TOML table folding puts them inside `[server]`. `Config.load` now
  hoists them to the root so files produced by `volumen init` (and any
  hand-edited config) round-trip through the canonical accessors without
  relying on CLI overrides.
- **Migrated from Ruby to Python**: the runtime has been rewritten on top of
  FastAPI + Uvicorn, replacing Sinatra with FastAPI, kramdown with
  python-markdown + pymdown-extensions, Puma with Uvicorn, Bundler with uv,
  minitest with pytest, RuboCop with Ruff, and the TOML parser
  (`toml-rb`) with the standard library `tomllib` (plus `tomli-w` for
  round-tripping edits). The public API (`/api/volumen/*`) and the
  server-rendered admin (`/admin/*`) keep the same shape and HTTP semantics.
- **Installer** — `install.sh` now bootstraps `uv` instead of Bundler, runs
  `uv sync --frozen` to provision `/opt/volumen/.venv`, and points the
  systemd `ExecStart` at the venv-resident `volumen` console script. The
  Python runtime is auto-installed on Fedora/openEuler; other distros get a
  heredoc with the equivalent `apt` / `pacman` / `zypper` / `apk` lines.
- **CI** — Forgejo Actions moved to `setup-uv` + Ruff + pytest on a single
  Python 3.12 job (was: Ruby 3.3/3.4 matrix with Bundler, RuboCop, and
  `bundle exec rake test`). The release workflow builds wheel + sdist via
  `python -m build` and uploads them with the Forgejo Releases API.
- **Migration guard** — new `.forgejo/workflows/migration-guard.yml` greps
  the tracked tree for Ruby-only terms (`bundle exec`, `RuboCop`, `Sinatra`,
  `Puma`, `kramdown`, `gem build`, `Volumen::`, `Rack::Session::Cookie`,
  `OpenSSL::KDF`, `lib/volumen/`) and fails the build if any of them leak
  back into production paths.
- **Configuration** — `config.toml` gains six new keys surfaced in
  `config.toml.example`: `[server].env` (`"production"` enables strict
  startup), `[server].trust_proxy` (honour `X-Forwarded-Proto` from
  nginx), `[admin].min_password_length` (default `10`),
  `[admin].max_password_length` (default `1024`, caps scrypt work),
  `[admin].max_upload_bytes` (default `10485760`, 10 MB), and
  `[admin].cookie_secure` (default `false` in dev, set `true` behind
  HTTPS). See `docs/configuration.md` for the full schema.
- **Default bind address** — the installer and `config.toml.example`
  default to `host = "::"` (IPv6 with automatic IPv4 fallback) so the
  service is reachable on both stacks out of the box. Bind to `"::1"`
  when running behind a reverse proxy.
- **Test client now uses `httpx2`** — dev dependencies replace
  `httpx>=0.28` with `httpx2>=2.7` (the actively maintained fork by
  Pydantic). Starlette 1.3.x prefers `httpx2` in `TestClient` and emits
  `StarletteDeprecationWarning` when only legacy `httpx` is installed;
  shipping `httpx2` keeps the test suite warning-free. The legacy
  `httpx` package is still pulled in via `fastapi[standard]` for the
  `fastapi` CLI and remains API-compatible. The unused
  `ignore::DeprecationWarning:starlette.testclient` filter is removed
  from `[tool.pytest.ini_options]` (it targeted the wrong warning
  class and never matched).

### Removed

- `install.sh` — the bash installer is deleted. Use `uv tool install
  volumen` (or `pipx install volumen`) followed by `volumen init`.
- `pkg/` build output and `volumen.gem` (Ruby gem packaging is gone; the
  project now ships as a wheel + sdist built with `python -m build`).
- `Gemfile`, `volumen.gemspec`, `Rakefile`, `.rubocop.yml` and the
  Sinatra-era `lib/` tree.
- `.editorconfig` — Ruff (`pyproject.toml`'s `[tool.ruff]`) is the single
  source of truth for Python formatting; modern editors default to UTF-8,
  LF, and a trailing newline. Markdown files in this repo use blank lines
  between paragraphs (no `  \n` line-break idiom), so trimming trailing
  whitespace is safe.

### Security

- **scrypt password hashing** now uses `hashlib.scrypt` and constant-time
  verification via `secrets.compare_digest` (was: Ruby's `OpenSSL::KDF`).
- **Session cookies** are signed by Starlette's `SessionMiddleware`
  (`itsdangerous`) with `HttpOnly` and `SameSite=Strict`; `Secure` is added
  by `SecureCookieMiddleware` when the request was forwarded over HTTPS
  (only when `[server].trust_proxy = true`).
- **CSRF tokens** are generated with `secrets.token_hex(32)` and verified
  with `secrets.compare_digest` on every state-changing admin POST.
- **Markdown sanitisation policy** — the renderer still passes inline HTML
  through (authors are the trusted admin); document the trust model
  explicitly in `docs/security.md` so deployments that ingest untrusted
  content know to add a sanitiser.

> Note: refine the Security bullets above once the Python agent confirms the
> final cryptographic controls (e.g. whether `image/*` upload signatures get
> re-validated server-side and whether the CSRF token is rotated on login).

## [0.3.0] — 2026-07-12

### Added

**Content & authoring**

- **Fediverse attribution:** a `fediverse_creator` frontmatter field (e.g.
  `@user@mastodon.social`) plus a site-wide `[site].fediverse_creator` default
  in `config.toml`. The value is exposed as `fediverse_creator` on the site
  and post payloads, rendered as `<dc:creator>` in the RSS feed, as
  `authors[].name` in the JSON feed, and can be consumed by a front-end to
  emit `<meta name="fediverse:creator">` on rendered pages. Per-post values
  override the site default.
- **Cover caption:** a `cover_caption` post field rendered next to the cover
  image so authors can credit photos or add a short blurb.
- **Titled images as `<figure>`:** Markdown images with a title
  (`![alt](url "caption")`) are wrapped in a `<figure>` with a `<figcaption>`
  and a small `i` info icon. Images without a title render exactly as before.

**Public API**

- `has_next` and `has_prev` boolean flags in the paginated
  `/api/volumen/posts` response so clients can navigate pages without
  computing boundaries themselves.
- Distinct `"draft"` error code in `/api/volumen/posts/:slug` when the post
  exists but is a draft, replacing the generic `"not_found"`.

**Admin**

- **Modern admin UI:** redesigned layout with a sticky top bar, breadcrumbs
  on every page, and a unified design language across login, post list,
  post form, and settings.
- **Volumen icon:** a dedicated SVG icon shown in the sidebar and on the
  login page (served at `/admin/icon.svg`).
- **Version in sidebar footer** so admins always see which release is
  running.
- **Per-user display name** on the user record and admin header.
- **Per-user fediverse handle** editable from the settings page (independent
  of the post-level `fediverse_creator`).
- **Profile photo upload:** each admin user can upload a WebP/AVIF avatar
  that is stored alongside posts in the content directory and shown in the
  settings page.
- **Tabbed settings page** separating account, profile, and admin sections.
- **Restricted uploads:** only WebP (`image/webp`) and AVIF (`image/avif`)
  are accepted, with a 415 error message that points users to `cwebp` /
  `avifenc` for conversion. Reflects the engine's WebP/AVIF-only posture
  end-to-end.
- **Polished native inputs** for `<input type="date|time|file">` so they
  match the rest of the admin's design language.

**Tooling**

- `just lint` recipe for standalone RuboCop checks and `just fmt` for
  auto-fixing lint issues.
- `config.toml.example` template for local development; `config.toml` is
  now gitignored.

### Changed

- Memoize `published_posts` within a single request so repeated calls
  (posts list, tags, feeds, sitemap) reuse the cached result.
- `Store#all` cache now invalidates on individual file mtime changes, not
  just on the content directory mtime. Manual edits and `git pull` are
  detected without a restart.
- `Cache-Control: public, max-age=60` header on all public API responses
  for browser and CDN caching.
- Extract feed and sitemap generation into a dedicated `FeedHelpers` module,
  reducing `Server` from ~500 to ~420 lines.

### Fixed

- Admin post save/delete now correctly clears the in-memory posts cache, so
  the post list reflects edits without a manual reload.
- The post form's date field defaults to today when the underlying post has
  no date, preventing the picker from showing an invalid empty value.

### Security

- **Content-Security-Policy** header on all `/admin/*` responses:
  `default-src 'self'`, `script-src 'self' 'unsafe-inline'`,
  `style-src 'self' 'unsafe-inline'`, `img-src 'self' data:`,
  `font-src 'self'`, `connect-src 'self'`, `form-action 'self'`,
  `frame-ancestors 'none'`.
- File uploads are rejected (HTTP 413) when exceeding **10 MB**
  (`MAX_UPLOAD_BYTES`).
- File uploads are restricted to `image/webp` and `image/avif`
  (`ALLOWED_UPLOAD_TYPES`). Anything else is rejected with a 415 and a
  conversion hint.

## [0.2.0] — 2026-06-25

### Added

- `<pubDate>` in RSS feed items, derived from the post date.
- `<lastmod>` in sitemap entries for SEO.
- In-memory rate limiting on the login endpoint: 10 attempts per 60 seconds per IP.
- `<language>` element in the RSS feed channel.
- Periodic cleanup of stale `login_attempts` entries to prevent unbounded memory growth.
- Slug format validation (`[a-z0-9._-]`) preventing path traversal and XSS in templates.
- Username validation in `change_username` matching the create-user regex.
- Escape-on-output for slug and username in admin template attributes.
- Memoization of `Store#all` with mtime-based invalidation, eliminating N×read+parse
  per request.
- Atomic file writes (tmp + rename) for posts and `users.toml`.
- Post language directory routing: non-default-language posts now land in
  `content_dir/<lang>/` instead of overwriting root-level files.
- CLI test coverage (version, help, unknown command, option parsing, config bootstrap).
- Test coverage for RSS feed and sitemap endpoints.
- CORS preflight (`OPTIONS /api/volumen/*`) so browsers can reach the JSON API.
- `Users#all` memoization with mtime-based invalidation, matching Store#all.
- Session invalidation: deleted users can no longer use existing session cookies.
- CSRF protection on `POST /admin/preview`.
- Symlink-safe containment in `Store#media_file` via `File.realpath`.

### Added

- **Scheduled publishing:** a `publish_at` frontmatter field hides posts from the
  public API and feeds until their publication date arrives. The admin form
  includes a Publish at date picker.
- **JSON Feed:** `GET /api/volumen/feed.json` serves a jsonfeed.org v1.1 feed
  with `content_html` and `date_published` per item.
- **Fulltext search:** `GET /api/volumen/posts?q=…` filters posts by
  case-insensitive match in title and body.

### Changed

- Split `lib/volumen/server.rb` into `api_routes.rb` and `admin_routes.rb` modules,
  keeping the server class focused on configuration and shared helpers.

### Fixed

- `admin.session_ttl` was defined but never read; it now controls
  `Rack::Session::Cookie` expiration via `expire_after`.
- Derived post excerpts now strip HTML tags before stripping markdown markup,
  avoiding raw HTML leaks in auto-generated excerpts.
- Draft posts no longer leak through the public detail endpoint (`/api/volumen/posts/:slug`).
- `Config::DEFAULTS` inner hashes are now frozen and `deep_merge` builds fresh
  copies, preventing mutation from silently poisoning later `Config.load` calls.
- A warning is emitted when `admin.session_key` is configured but shorter than
  64 bytes, instead of silently falling back to a random secret.

## [0.1.0] — 2026-06-20

First public release: a small, file-based Markdown blog engine in CRuby. Posts
are plain files, the engine exposes them as a JSON API and ships a self-hosted
admin — no database, no external services.

### Added

**Content & storage**

- File-based store: each post is a `.md` file with a TOML frontmatter block
  delimited by `+++`. No database.
- Post fields: `title`, `slug`, `date`, `lang`, `author`, `tags`, `draft`,
  `excerpt`, `cover`, `all_langs`, and `translations` (a `lang → slug` map).
- Drafts (`draft = true`) are hidden from the public API.
- Excerpt falls back to the first paragraph (~200 chars) when none is set.
- Estimated reading time (~200 words/min) computed per post.
- Multilingual posts: per-language slugs via `translations`, plus `all_langs`
  to surface a single post under every language.

**Markdown rendering**

- GFM rendering via kramdown: tables, fenced code blocks, task lists, and
  strikethrough.
- Automatic heading IDs for in-page anchors.
- Raw HTML in post bodies is passed through (authors are the trusted admin).

**Public JSON API (`/api/volumen`)**

- Read-only endpoints: `site`, `posts`, `posts/{slug}`, `tags`, `feed.xml`
  (RSS), and `sitemap.xml`.
- `posts` supports pagination (`page`, `limit`, returning `total` and
  `page_size`) and filtering by `lang` and `tag`.
- Permissive CORS so a separate front end can consume the API.

**Admin (`/admin`)**

- Server-rendered admin with a sidebar layout and full post CRUD.
- Dual-mode editor: Markdown source (primary) and a visual WYSIWYG, switchable
  per post, with a toggleable live preview persisted across sessions.
- Image upload from the editor toolbar into `content_dir/media`; any image
  format is accepted (WebP and AVIF included) and served with the correct
  `Content-Type`.
- Cover image field with upload, URL, clear, and preview.

**Multi-user & roles**

- Multiple admin users stored in `users.toml`, managed from a settings page.
- Two roles: `admin` (full access incl. user management) and `author` (posts
  only).
- Change password and username; last-admin and self-deletion safeguards.

**Configuration & CLI**

- TOML configuration, auto-generated with a commented template on first run.
- Configurable `host`/`port` (defaults to `9090`), `content_dir`,
  `users_file`, and `site` metadata.
- CLI: `serve`, `hash-password`, `version`, `help`, with `--config`,
  `--content`, `--host`, and `--port` overrides.

**Deployment**

- `install.sh` installs the Ruby toolchain from distro packages on Fedora and
  openEuler (and prints guidance on other distros), creates the service user
  and directories, and installs a systemd unit.
- Deployment docs for systemd and FreeBSD (`rc.d`), plus an nginx reverse-proxy
  setup that runs the admin same-origin, with brute-force rate-limiting and an
  optional IP allowlist on the login endpoint.

**Project & tooling**

- Documentation set: architecture, configuration, API reference, deployment,
  and security.
- `just` task set (`install`, `run`, `dev`, `build`, `test`, `uninstall`) and
  Forgejo Actions CI (RuboCop + tests on Ruby 3.3/3.4, gem build on release).
- `CONTRIBUTING.md` and a minitest suite; clean RuboCop.

### Security

- Passwords hashed with scrypt and verified in constant time.
- Per-form CSRF tokens on every state-changing admin request.
- Session cookies are `HttpOnly` and `SameSite=Strict`, and gain the `Secure`
  attribute automatically on HTTPS requests (detected via `request.ssl?` /
  `X-Forwarded-Proto`), so the cookie never travels over plain HTTP in
  production.
- Configurable, stable `session_key` so sessions survive restarts.
- Generic login error message to avoid username enumeration.

[0.1.0]: https://sourcedock.dev/petrbalvin/volumen/releases/tag/v0.1.0
[0.2.0]: https://sourcedock.dev/petrbalvin/volumen/releases/tag/v0.2.0
[0.3.0]: https://sourcedock.dev/petrbalvin/volumen/releases/tag/v0.3.0
[0.4.0]: https://sourcedock.dev/petrbalvin/volumen/releases/tag/v0.4.0