# Changelog

## Unreleased

## 0.0.7 — 2026-09-14

Security and correctness hardening, from a threat model (spec §15.1), an
independent review, and the tests that hold both.

Hostile names and contents
- File names, paths, tool messages, errors, explain traces, JSON plans and
  log fields can no longer control or reorder the terminal: control
  characters, every bidirectional control, line and paragraph separators
  and invalid UTF-8 are printed as escapes (`\x1b`, `\u202e`).
- A placeholder can no longer take a destination outside the directory the
  rule names: a capture of "..", "~" or nothing is refused with a reason,
  and so is a rename to "", "." or "..".
- A file swapped between planning and applying - for a symlink, or for
  another file with the same size and modification time - is not acted on;
  a step that had to take a free name stops the rest of its chain.
- `on-conflict overwrite` never trashes a directory, or another file of the
  same plan; it skips or takes a free name instead.
- A content exclude holds when its content test cannot read the file
  (fails closed), so a protected file krino could not read is left alone.
- Extraction tools are only found through absolute PATH entries.

Apply and undo
- Every step is logged as soon as it has run; SIGHUP is handled like
  SIGTERM. A run killed mid-chain can be undone as far as it got.
- Undo reverses a file its run renamed and then moved, moved twice, or
  moved and then trashed (it refused them before).
- Undo restores a trash entry only while it is still the file the run put
  there, re-checks every file just before acting, keeps same-named files
  of two directories apart, and leaves no directory behind.
- An undo that stopped part way can be finished by undoing the run again;
  plain `krino undo` after an undo does that.
- The log restores a missing final newline, so a crash mid-line no longer
  breaks the next run's undo.
- Trash entries skip names left orphaned in the Trash, and long names are
  shortened to fit.

Matching and the keyword cache
- Folding maps the capital sharp s (ẞ) to "SS", and replaces invalid UTF-8
  first so a stray byte no longer stops the next letter losing its accent.
- The cache keys on the extension too (it picks the extractor), and is
  discarded when max-read, the Go release or the Unicode tables change;
  removed keywords leave it, and an unused cache is removed.

Command line
- Undo's per-file review behaves like review's (`w` leaves the rest
  unreviewed, choices echoed).
- `w` stops krino even when applying fails.
- `--min-age` is refused by commands it does not apply to, and an empty
  value is an error; a file dated in the future counts as brand new.
- `krino new` refuses a path that is not valid UTF-8, with that reason.
- A rule name cannot start with "(".
- Builds need Go 1.25 or newer and use the Go 1.26.8 toolchain;
  `golang.org/x/text` is v0.41.0 (GO-2026-5970, and through the toolchain
  GO-2026-6088 and the `os/exec` and `os` fixes).

Tests
- Fuzz targets for every decoder of outside data (`make fuzz`), a generated
  apply-and-undo round trip comparing files and directories
  (`KRINO_PROPERTY_RUNS`), enum-completeness tests, `make race`,
  `make vulncheck`, and a dependency gate that checks modules.

## 0.0.6 — 2026-09-14

- Choosing per file: `w` now applies what was decided and quits krino,
  instead of going on to the next directory, so a long review can be done a
  session at a time. Files never reached are not logged as declined; the
  outcome line counts them as "not reviewed".
- Each choice is echoed on its own red line under the file (`→ yes`,
  `→ trash`, ...).
- Enter is ignored at the review prompts instead of being reported as a
  wrong key.

## 0.0.5 — 2026-09-14

- Keyword cache: for each file whose text it extracts, krino records which
  content keywords the text contains, in `~/.cache/krino/NAME.cache`, and
  answers content tests from it while the file is unchanged. A rerun over
  the same files extracts nothing: on a real downloads folder a dry run
  went from 12.8 s to 0.13 s. No text and no file names are stored. A
  changed file, a new keyword, or a changed extraction tool means reading
  again; failures are never cached. `krino check` shows where the cache is.
- Choosing per file: `t` sends the file to the Trash and `d` deletes it
  permanently, after a `y` to confirm, instead of what its rules planned;
  both are logged under the rule `(review)`. "Done, apply chosen so far"
  moves from `d` to `w`, in undo's review too.

## 0.0.4 — 2026-09-14

- `max-size` setting: files larger than it are skipped as "too big", in
  `(defaults ...)` or a directory file.
- `(exclude COND...)` sets files aside before any rule sees them, by type or
  extension, name regex, content, or any other condition; all conditions in
  one form must hold. In `krino.conf` it applies to every directory, in a
  directory file to that directory. Excluded files are counted in the plan
  and listed with the form that matched under `-v`; `explain` traces every
  exclusion and `check` lists them.
- `--min-age DURATION` overrides every directory's `min-age` for one run,
  e.g. `krino -n --min-age 0` to include files written a moment ago.
- `krino init` and `krino new` write commented examples of all three.

## 0.0.3 — 2026-09-14

- The plan is shown as one block per file instead of a table: the file's
  name, each step, then the rule and the reason it matched. On a terminal
  every line wraps to its width, with continuation lines indented under
  their own column; piped output is never wrapped.
- Choosing per file (`c`) shows that same full block for each file, not only
  its steps.
- `-P` / `--no-pager` prints the plan straight out instead of through the
  pager.
- A duplicate's original is shown with `~` for the home directory.

## 0.0.2 — 2026-09-14

- Duplicates are found, never deleted. A rule combining `(duplicate)` with
  `(delete)` or `(delete permanent)` is refused by `krino check` and every
  run, and a file that is a duplicate under any duplicate scope its
  directory's rules use gets no delete step from any rule. This replaces
  0.0.1's known limitation: duplicate conditions with different scopes can no
  longer delete every copy of a group, only move copies aside.
- Coloured output on a terminal, in the terminal's own 16-colour palette:
  actions by kind, rule names, skipped steps and reasons, warnings, the
  outcome counts and the prompt keys. `--no-color`, before or after any
  subcommand, turns it off, as `NO_COLOR` does.

## 0.0.1 — 2026-09-13

- Per-directory rule files, a main file listing which directories run, and a
  template for new ones.
- Conditions with `and`, `or` and `not` over type, name, path, content, size,
  age and duplicates.
- Actions copy, move, rename and delete (to Trash by default), chained.
- Plan, review and approve — all files or per file — with `-y` to skip
  review.
- A log of every step, and `krino undo`.
- Placeholders in destinations and new names.
- Builds for Linux, FreeBSD and OpenBSD.

Performance: no threshold or target for 0.0.1. These were measured during
development and are reported rather than promised — throughput is dominated
by external content extractors, not by krino itself:

- Full plans over a real folder of about 265 files, 164 of them needing text
  extraction through `pdftotext` at roughly 80 ms each, measured between
  about 13 and 20 s across runs.
- A synthetic benchmark during development planned a generated tree of 4,405
  files needing no extraction in 1.09 s. That benchmark is not `make bench`,
  whose generated tree is smaller.

Files that share a byte size but differ in content — six templated invoices,
for instance — are still told apart, because the duplicate check hashes the
first and last 64 KiB and then the whole file rather than trusting size.

Known limitation: `(duplicate)` conditions with different scopes can elect
different originals for the same content, and within one directory's rules
this can select every copy for deletion — see `krino.conf(5)`, DUPLICATES.