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M2 (task ht0): walk the directory.
- src/navigator.{c,h}: GObject (no GtkWidget) holding the folder listing โ
image-MIME filter + extension fallback, hide-RAW-sidecars (decision #33),
sort name/time/size, cursor + prev/next/wrap, path-based marks (survive
re-sort, pruned on rescan/monitor, cleared on remove), nearest-fallback,
GFileMonitor debounced 250ms (decision #28), 'changed' signal. 92% gcov.
- src/shortcuts.{c,h}: GtkShortcutController (MANAGED) binding h/l/Left/Right/
g/G/o/q to win.* actions; one table all milestones add to.
- src/window.{c,h}: open file->parent+current / folder->first; h/l/g/G actions
-> nav -> load -> viewer; single GCancellable last-write-wins (g_file_equal
guard for M3 async); header title 'filename ยท n/total'; GtkDropTarget
(GDK_TYPE_FILE_LIST, many->first, decision Z); GtkFileDialog open.
- data/gschema: add hide-raw-sidecars key.
- tests: unit test_navigator (12 subtests), integration test_walk_folder
(temp fixtures walk + ./sample-images skip-if-absent). 8/8 green; ASan clean
(GIO_USE_VFS=local in fixtures_env).
Fixed during this milestone: a UAF (borrowed c_name used after unref), a
cancellable double-ref leak, time::modified UINT64 vs INT64, and several
test-harness leaks. Sub-agent review issues addressed (mark pruning on
rescan/monitor, remove-before-cursor test, recursive temp-dir cleanup,
callback _cb naming, connect-before-mutate).
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M1 (task gt0): show one image with zoom/pan.
- src/loader/detect.{c,h}: magic-byte format sniffing (JPEG/PNG/GIF/WebP/
TIFF/ICO/JXL/AVIF/HEIF) -> GgazeFormat; pure, no I/O, unit-testable.
- src/loader/loader.{c,h}: loader_load() sniffs the header and dispatches to
the first registered backend; GgazeLoaderBackend struct; pixbuf is the
fallback (last, accepts UNKNOWN). M1 ships only the pixbuf backend.
- src/loader/backends/pixbuf.c: GdkPixbufLoader decode +
gdk_pixbuf_apply_embedded_orientation (decision #26) -> GdkTexture via
gdk_memory_texture_new (avoids the deprecated gdk_texture_new_for_pixbuf).
- src/viewer.{c,h}: GgazeViewer : GtkWidget custom widget (decision #31) โ
fit/100%/in/out zoom, cursor-centered zoom, drag-to-pan with clamping,
dark background, GtkSnapshot render nodes.
- src/window.c: open -> loader_load -> viewer_set_texture -> stack 'large'.
- tests: unit test_detect (13 cases) + test_loader_pixbuf (plain/rotated-EXIF
8x4 orient6->4x8/png/rgba/missing/unsupported jxl-avif-heif/corrupt),
integration test_open_and_show (fixture + rotated + ./sample-images
skip-if-absent). 6/6 green; detect 97% / loader 91% / pixbuf 87% coverage.
- fixtures: gen.py produces plain.jpg, rot6.jpg, small.png, rgba.png.
- AGENTS.md: documents the ./sample-images optional test corpus convention.
Sub-agent review fixes: use-after-free of c_name in ggaze_window_open
(BLOCKER), gtk_stack_get_pages leak in test_window (BLOCKER), coverage gap,
dead branch, viewer measure, _prefix/_cb naming, include order, extern in
header, pan clamp, stale comments โ all addressed.
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