feat(jpeg)!: migrate JPEG to gamut-jpeg; delete jpegli stack and img-parts

.github/workflows/ci.yml

@@ -71,19 +71,9 @@ jobs:
       # `image` crate; encode is pure-Rust gamut-avif), `heic` (pure-Rust
       # gamut-heic container/pipeline — no system library; pixel decode goes
       # through rawshift-hwdec, which `full`'s `hw` flag compiles as the
-      # no-backend stub until the platform backends land), `jxl-encode`
+      # no-backend stub until the platform backends land), and `jxl-encode`
       # (builds libjxl hermetically through gamut-jxl-sys — cmake + clang for
-      # its bindings), and `jpeg-encode-jpegli-vendored` builds the vendored
-      # google/jpegli submodule the same way (cmake + clang).
-      - name: Check out jpegli build submodules
-        # Init the vendored google/jpegli submodule and only its build-time
-        # dependencies — the 111 MB `testdata` and `googletest` submodules are for
-        # jpegli's own tests, which we disable, so they are skipped.
-        run: |
-          git submodule update --init crates/rawshift-image/third_party/jpegli
-          git -C crates/rawshift-image/third_party/jpegli submodule update --init \
-            third_party/highway third_party/libjpeg-turbo third_party/skcms \
-            third_party/lcms third_party/libpng third_party/zlib third_party/sjpeg
+      # its bindings).
       - name: Install system libraries
         run: |
           sudo apt-get update
@@ -94,7 +84,7 @@ jobs:
           GH_TOKEN: ${{ github.token }}
       - name: Generate standard format fixtures
         run: cargo run -p rawshift-image --example generate_test_fixtures
-      - run: cargo test --workspace --features rawshift-image/full,rawshift-image/jpeg-encode-jpegli-vendored
+      - run: cargo test --workspace --features rawshift-image/full
 
   image-only:
     name: Build (image only)

CHANGELOG.md

@@ -16,6 +16,28 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   layer (see `docs/SUPPORT.md`). HEIC pixel decode in `rawshift-image` now
   works end-to-end on hardware through this backend.
 
+### Changed
+
+- *(image)* **breaking**: JPEG migrated to gamut-jpeg (pure Rust, baseline +
+  progressive both ways). Decode replaces `zune-jpeg` (`DecodeOptions::Jpeg`,
+  codec id `jpeg/gamut`; CMYK/YCCK conversion is bit-identical to the previous
+  backend); encode replaces `jpeg-encoder` **and** the entire jpegli stack
+  with one `EncodeOptions::Jpeg(JpegEncodeConfig)` exposing gamut's knobs
+  (quality, subsampling, progressive, restart interval, JFIF density).
+  JPEG EXIF/XMP/ICC now embed via the encoder and extract via
+  `gamut_jpeg::metadata` (JPEG metadata reads now also surface ICC + XMP);
+  `probe_standard_image` reads the JPEG header through `gamut_jpeg::info`.
+
+### Removed
+
+- *(image)* **breaking**: the `jpeg-decode-zune`, `jpeg-encode-jpeg-enc`,
+  `jpeg-encode-jpegli`, `jpeg-encode-jpegli-vendored`, and `container-embed`
+  features; the `zune-jpeg`, `jpeg-encoder`, and `img-parts` dependencies; the
+  vendored `google/jpegli` submodule and the cc/cmake/bindgen build-script
+  slice; `EncodeError::Jpeg`/`EncodeError::Jpegli`; `ExifContainer::Jpeg` and
+  the hand-rolled JPEG APP1 scanner (jpegli parity is tracked upstream:
+  gamut#19/#29/#30).
+
 ## [0.1.1](https://github.com/justin13888/rawshift/compare/v0.1.0...v0.1.1) - 2026-05-29
 
 ### Added

Cargo.toml

@@ -33,6 +33,7 @@ gamut-dng = { git = "https://github.com/justin13888/gamut", rev = "dde9f640ab02e
 gamut-metadata = { git = "https://github.com/justin13888/gamut", rev = "dde9f640ab02ec9c3437c3f1181164f6e7c60151" }
 gamut-xmp = { git = "https://github.com/justin13888/gamut", rev = "dde9f640ab02ec9c3437c3f1181164f6e7c60151" }
 gamut-icc = { git = "https://github.com/justin13888/gamut", rev = "dde9f640ab02ec9c3437c3f1181164f6e7c60151" }
+gamut-jpeg = { git = "https://github.com/justin13888/gamut", rev = "dde9f640ab02ec9c3437c3f1181164f6e7c60151" }
 # default-features off: gamut-jxl defaults to decode+encode; rawshift's
 # `jxl-decode` / `jxl-encode` features select the halves explicitly.
 gamut-jxl = { git = "https://github.com/justin13888/gamut", rev = "dde9f640ab02ec9c3437c3f1181164f6e7c60151", default-features = false }