chore: release v0.4.0

CHANGELOG.md

@@ -7,6 +7,133 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0](https://github.com/rust-works/patchcov/compare/v0.3.0...v0.4.0) - 2026-10-09
+
+### Added
+
+- *(cli)* mark a truncated path-mismatch sample and name its size once
+- *(cli)* JSON lines for lint-markers findings and the merge summary
+- *(cli)* structured fields on JSON warnings
+- *(cli)* structured gate fields in the JSON error output
+- *(cli)* print warnings as JSON lines under --error-format json
+- *(cli)* opt-in JSON error output on stderr
+- [**breaking**] exit with a distinct code for each class of failure
+- *(diff)* [**breaking**] fail by default when a report's paths match no tracked file
+- *(diff)* detect the default base branch from origin/HEAD, main or master
+
+### Documentation
+
+- align path-mismatch example with checkout normalization
+- *(reference)* explain the path-mismatch change when upgrading from 0.3.0
+- *(reference)* show level in the gate error example
+- *(reference)* show the anchored report path in the JSON warning examples
+- *(troubleshooting)* say a path mismatch exits 7, not 1
+- *(reference)* word the path-mismatch truncation rule without Rust notation
+- *(reference)* say how to tell that a path-mismatch unmatched sample is truncated
+- *(cli)* tighten the note on display-string paths in JSON warnings
+- *(cli)* say the report and shard fields of JSON warnings are display strings
+- *(reference)* describe the JSON finding and merge summary lines
+- *(reference)* list the fields of each JSON warning kind
+- recommend cargo install --locked and document the fresh-resolution MSRV job
+- *(reference)* document the JSON warning line and the error level
+- *(readme)* say the other formats fail under --branch-coverage
+- *(readme)* say which report formats support --branch-coverage in the intro
+- *(reference)* document the exit code for each failure class
+- *(release)* anchor the docs changelog parser and list every group
+- *(release)* group docs commits under Documentation in the changelog
+- describe the default base branch resolution order
+- *(contributing)* clarify what CI covers for lint-markers and docs
+- *(readme)* address review of the mission and branch-coverage wording
+- *(readme)* add a mission statement and fix the branch-coverage line
+
+### Fixed
+
+- *(cli)* discover diff repositories from subdirectories
+- *(cli)* preserve input arguments in report and shard labels
+- *(cli)* explain spaced negative float thresholds
+- *(cli)* preserve chain and gates in JSON error fallback
+- *(cli)* simplify the mismatch-sample suffix and tighten docs wording
+- *(cli)* address review of the JSON error fallback
+- *(cli)* keep code in the JSON error line when the full report cannot be serialized
+- *(tests)* match GitHub more closely in the doc link check
+- *(cli)* report a missing --fail-under-* value instead of blaming the next argument
+- *(cli)* carry the record's level and kind into the JSON fallback line
+- *(cli)* print a minimal JSON line when a record fails to serialize
+- *(diff)* normalise -0 thresholds and cover negatives end to end
+- *(diff)* reject negative --fail-under-patch and --fail-under-lines values
+- *(markers)* make MarkerError non-exhaustive and tidy the JSON line docs
+- *(cli)* reject non-finite --fail-under-patch / --fail-under-lines values
+- *(cli)* report measured gate values unrounded
+- *(ci)* run the real unlocked cargo install in the fresh-resolution job
+- *(cli)* address review of the JSON warnings
+- *(cli)* address review of the JSON error output
+- *(cli)* address review of the exit-code change
+- *(diff)* keep the deprecated --fail-on-path-mismatch a pure no-op
+- *(diff)* name the chosen base in the merge-base error; isolate the master test
+
+### Other
+
+- Merge pull request #126 from rust-works/issue-124-perf-json-fallback-lazy
+- *(cli)* check troubleshooting example against exit-7 error
+- *(cli)* build JSON fallbacks only on serialization failure
+- check links in all tracked markdown except the changelog
+- *(cli)* preserve as-typed labels after rebase
+- *(cli)* cover baseline Go reports from subdirectories
+- *(cli)* define JSON fallback fields in one place
+- Merge pull request #117 from rust-works/issue-108-docs-path-mismatch-upgrade-note
+- Merge pull request #120 from rust-works/issue-106-decide-relative-path-naming-in-warnings
+- Merge pull request #121 from rust-works/issue-105-test-path-mismatch-doc-examples
+- Merge pull request #118 from rust-works/issue-104-diff-spaced-nonfinite-threshold-message
+- Merge pull request #116 from rust-works/issue-102-json-fallback-keep-gates
+- *(cli)* accept CRLF in the troubleshooting example
+- *(cli)* pin input labels in empty shard errors
+- *(cli)* check path-mismatch doc examples against Display
+- *(cli)* check warning kind field types against docs
+- parse documentation links with CommonMark
+- bound release and fresh MSRV job durations
+- *(cli)* check JSON gate order against reference docs
+- Merge pull request #90 from rust-works/issue-83-json-error-keep-code
+- Merge pull request #94 from rust-works/issue-88-docs-json-warning-path
+- Merge pull request #98 from rust-works/issue-85-emit-derive-level-kind
+- *(cli)* cover the fallback labels through one fixed-label wrapper
+- *(cli)* address review of the docs-table checks
+- *(cli)* derive emit's level and kind from the record
+- *(cli)* check documented types, constants and the error object against the JSON output
+- *(cli)* share the isolated command setup and cover a relative -C in the warning path tests
+- check relative links and anchors in README, CONTRIBUTING and docs
+- *(cli)* pin the unexplained -inf spelling and more missing-value cases
+- cite the measured maximum in the timeout comment
+- explain the job timeout values
+- set timeout-minutes on the CI jobs
+- Merge pull request #77 from rust-works/issue-73-docs-path-mismatch-truncation
+- Merge pull request #76 from rust-works/issue-72-docs-json-warning-non-utf8-paths
+- Merge pull request #80 from rust-works/issue-70-test-json-fields-vs-docs
+- *(cli)* make the docs field checks less brittle
+- *(cli)* pin the JSON fields of findings, the merge summary and warnings against docs/reference.md
+- *(cli)* drop a warn test that restated render
+- *(cli)* share the stderr format lookup and render path between warn and emit
+- *(msrv)* run the test suite on the MSRV toolchain
+- *(markers)* return a structured MarkerError from scan
+- Merge pull request #66 from rust-works/issue-61-json-warning-fields
+- *(cli)* derive a deprecated warning's fields from its flag
+- *(cli)* assert warnings by value without untested panic branches
+- *(cli)* exercise -inf through the value parser and assert accepted thresholds
+- *(msrv)* run doctests on the MSRV toolchain
+- *(diff)* assert the patch gate's data without an untested panic branch
+- Merge pull request #57 from rust-works/issue-52-ci-msrv-fresh-resolution
+- *(msrv)* check the MSRV against a fresh dependency resolution weekly
+- run doctests in the test job
+- Merge pull request #50 from rust-works/issue-47-json-error-output
+- *(exit)* do not depend on the OS wording of a missing file
+- *(deps)* drop the unused clap env feature
+- pass --locked to every cargo step
+- *(exit)* a path mismatch exits 7 unless it is allowed
+- Merge pull request #38 from rust-works/issue-35-default-base-branch
+- Merge pull request #40 from rust-works/issue-30-cargo-binstall
+- *(binstall)* fail when the binstall metadata drifts from the release workflow
+- *(binstall)* describe the release archives to cargo-binstall
+- run patchcov lint-markers in the Lint job
+
 ### Changed
 
 - Report and shard diagnostic labels now preserve the input argument in `diff` and

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "patchcov"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 authors = ["John Ky <[email protected]>"]
 license = "BSD-3-Clause"