Undo/redo for annotations, frictionless delete/merge, exclusive tools, dataset-splitter fixes (#80, #81)#82
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Records the triaged open upstream issues (validated 2026-06-12) with size classification. Each row is deleted in the PR that resolves it; the whole section is removed once empty. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Captures the method of writing triaged work items into CLAUDE.md as a temporary table with a deletion hook: each resolving PR deletes its row, and the section removes itself once empty. Un-ignores .claude/skills/ so project skills are tracked like the senior-reviewer agent. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Adds a combo above the image list (All / Without annotations / With annotations). Rows are hidden via setRowHidden — never removed — so row-index iteration (DINO navigation, COCO import) stays valid and no spurious currentRowChanged/switch_image fires. The current row is never hidden. Re-apply hooks into ClassController.update_slice_list_colors, which every annotation-mutation site already calls. Multi-dim images count as annotated when any of their slices has annotations. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
bnsreenu#57) torch.cuda.is_available() is True for Pascal GPUs (e.g. GTX 1050, sm_61) even though torch>=2.8 wheels ship sm_70+ kernels only, so every launch died with 'CUDA error: no kernel image is available'. New core/torch_utils.resolve_torch_device() compares the device capability against torch.cuda.get_arch_list() and returns cpu + an actionable warning on mismatch (cached process-wide). SAM passes device= on every predict, DINO's _resolve_device delegates to the helper (DINO_DEVICE override kept), YOLO train/predict pass device=. One-time QMessageBox via maybe_warn_cpu_fallback at SAM model pick and DINO detect. README gains a Pascal/Maxwell note with the torch-downgrade command. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Adds the device-fallback concept and the hide-don't-remove image-list rule to crosscutting concepts, registers core/torch_utils and the filter responsibility in the building block view, and removes the #27 and bnsreenu#57 rows from the CLAUDE.md backlog per its deletion hook. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- Comment/doc now state the real re-apply contract (direct update_slice_list_colors call OR annotationsBatchSaved route) instead of overclaiming that every mutation site calls it directly. - apply_image_filter early-outs on the default 'All images' mode so the per-refresh annotation scan only runs with an active filter. - Integration test exercising the real commit path (annotationsBatchSaved -> save -> color refresh -> filter re-apply). - torch_utils: document the deliberate device-0-only probe; note the _8bit-key caveat in the prefix fallback; register core.torch_utils in the import smoke list. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Manual testing feedback: under an active filter, a selected image that doesn't match (e.g. unannotated under 'With annotations') stayed in the list until the user navigated away. Drop the never-hide-current-row exemption — the current row is now hidden like any other non-match. Hiding doesn't touch current_image or fire currentRowChanged, so the canvas keeps showing the worked-on image while its row leaves the list, which is the requested behavior. New integration test asserts the canvas-unchanged / no-switch_image guarantee; unit test updated to the new expectation; arc42 updated. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…nd-pascal-gpu-fallback feat: Image-list annotation filter (bnsreenu#27) + CPU fallback for unsupported CUDA GPUs (bnsreenu#57)
model.export() converts to a deployment format and crashes when given a .pt save path; model.save() writes the checkpoint as intended. Reporter- verified fix. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…nsreenu#44) On Windows, open() defaults to the cp1252 code page, so any YAML/JSON/TXT containing non-ASCII (e.g. a unicode class name, or a non-ASCII path in an .iap project) crashed with 'charmap codec can't decode/encode'. Add encoding='utf-8' to every text-mode open across YAML (yolo_trainer, import/export_formats, dataset_splitter), JSON (project load/save, COCO import/export, augmenter, combiner, dino merge, project search), and YOLO label .txt writes. PIL Image.open (binary) left untouched. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…u#33) start_polygon_edit returned the first polygon containing the double-click, so an annotation fully nested inside another could never be edited. Scan all containing polygons and pick the smallest by area (reusing the existing shoelace calculate_area from utils.py). bbox-only annotations remain out of scope (that's bnsreenu#40). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
New ImageController.sort_image_list orders all_images and the list widget together (case-insensitive), keeping the all_images[i] <-> image_list.item(i) invariant that COCO import relies on. Rebuilds with signals blocked rather than setSortingEnabled, since currentRowChanged is wired to switch_image and a live re-sort would fire spurious image switches. Wired into add_images_to_list (selects/switches to the first added image), update_image_list, and the COCO import path. Skipped per image during project load to avoid O(n^2) re-sorts. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…enu#56) Reading an LZW-compressed TIFF without the optional imagecodecs package raised ValueError and crashed the app. Add imagecodecs to install_requires (fixes new installs) and catch the codec ValueError in add_images_to_list: show an actionable 'pip install imagecodecs' dialog and skip the file instead of crashing or leaving a half-added entry. Non-codec ValueErrors still propagate. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…ard test, execute backlog hook Adds the image-list sort and TIFF-codec concepts to crosscutting docs, updates the ImageController building-block row, adds a UTF-8 round-trip regression test for bnsreenu#44, and removes the five resolved quick-win rows (bnsreenu#30/bnsreenu#44/bnsreenu#33/bnsreenu#60/bnsreenu#56) from the CLAUDE.md backlog per its deletion hook. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Removes unused/duplicate imports, placeholder-less f-strings, and one unused local in files modified by this PR, so ruff check --select F,E9 passes cleanly. No behavior change; full suite still green (156 passed). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- _is_missing_codec_error: drop the over-broad 'compression' substring arm that could swallow unrelated ValueErrors behind a misleading 'install imagecodecs' dialog; match only the reliable 'imagecodecs' token (bnsreenu#56). - sort_image_list: use info.get('file_name','') so the sort key is total even if an entry ever lacks file_name (bnsreenu#60). - image_label: hoist 'from ..utils import calculate_area' to module scope per ADR-016 (no inline imports that rot after module moves). - Add test_project_load_path_ends_sorted pinning the load -> update_ui rebuild-sorts contract. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…nsreenu#56) Locks in the P1 narrowing from the prior commit so a future broadening of _is_missing_codec_error is caught. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Five upstream quick wins: bnsreenu#30, bnsreenu#44, bnsreenu#33, bnsreenu#60, bnsreenu#56
Ultralytics ships no SAM trainer (SAM.train() -> NotImplementedError), so
this adds a custom decoder (optionally encoder) fine-tuning loop that reuses
Ultralytics' own SAM2Predictor forward methods (get_im_features /
prompt_inference) under autograd, with focal+dice loss + AdamW. Fine-tuned
checkpoints save as {"model": state_dict} and reload through the unchanged
SAM(path) inference path, appearing in the SAM model selector.
- training/sam_trainer.py: SAMFineTuner engine + geometry/loss/naming helpers
- training/sam_dataset.py + io/export_formats.export_sam_dataset: project and
prepared-folder dataset producers
- dialogs/sam_trainer_dialog.py: config dialog (reuses TrainingInfoDialog)
- controllers/sam_train_controller.py: menu, GPU gate, SAMTrainingThread,
selector registration; wired in annotator_window
- inference/sam_utils.py: custom-model registry so fine-tuned models load by path
- tests/integration/test_sam_finetuning.py: geometry/loss/dataset/API-drift
guards + opt-in end-to-end (SAM_TRAIN_E2E=1)
- docs: ADR-021, building-block, runtime, glossary; CLAUDE.md structure
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- Encoder path: backprop once per image (sum instance losses) so the shared encoder feature graph isn't freed mid-loop; batch_size now accumulates over images. Fixes "backward through the graph a second time" crash on any image with >1 instance when fine-tuning the image encoder. - Concurrency: lock SAM inference UI (tools, model selector, fine-tune menu) for the duration of a run; restore in training_finished on success AND error. The trainer uses its OWN SAM instance — corrected the false "drives the resident model" narrative in code docstrings, ADR-021, and runtime view; the real hazard is two models on one CUDA context. - Threading: convert in-memory slice QImages to numpy on the GUI thread before handing to the worker (matches _qimage_to_numpy cross-thread contract). - Harden export_sam_dataset path components with os.path.basename. - Add opt-in encoder-path multi-instance regression test. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- _launch wraps setup-through-start() in try/except so a failure before the worker thread starts re-enables the SAM inference UI (otherwise tools stay disabled until restart — training_finished was the only other unlock site). - export_sam_dataset slice lookup uses `is not None` (consistency with sam_dataset.py). - Add controller tests: UI lock toggle + lock-recovery on setup failure. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The Unicode → in the progress print raises UnicodeEncodeError on a Windows cp1252 console. Use -> so a console-launched run can't crash on the export log. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Found during real GUI testing on non-square images. - Mask shift (correctness): training loss mapped decoder logits to the image with a naive F.interpolate, but SAM2 letterboxes (pad bottom/right) and inference crops that padding via ops.scale_masks(padding=False). The decoder learned padding-shifted targets -> masks shifted down on non-square images. Fix: run logits through the SAME ops.scale_masks(padding=False) inference uses. Validated on a landscape image: fine-tuned mask centroid dY=-0.1px, IoU=0.994 (was visibly shifted). Square test images had hidden the bug. - Progress dialog: clear the reused log on launch; disable Stop on completion so a post-finish click can't strand it on "Stopping...". SAM instance only; shared TrainingInfoDialog class untouched (YOLO unaffected). - Device label: show GPU name (cuda:0 read as "not detected"). - Light mode: drop inline color:palette(text) on the config-dialog note and the pre-existing DINO sidebar caption (No Hardcoded Colors Rule). - Tests: ops.scale_masks padding=False crop-geometry guard + opt-in landscape shift regression. ADR-021 coordinate-frame consequence documented. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The loaded canvas + updated window title already make a successful open obvious; the modal was just an extra click. Error dialogs unchanged. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
feat: Fine-tune SAM 2 / 2.1 on user annotations (bnsreenu#73)
The ClassThresholdTable header styled itself inline with background-color: palette(mid); color: palette(text). Those palette() references resolve against the OS palette (dark on Windows), so in the app's light mode the header painted dark-on-light, out of step with the rest of the UI. Light mode (default_stylesheet) also had no QHeaderView::section rule at all, while dark mode did. Strip the inline palette() colours (keep only structural font-weight / padding) and add a light QHeaderView::section rule to default_stylesheet, symmetric with the dark sheet. Header colour now follows the active theme. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…bnsreenu#75) Give the canvas the same selection power the annotation list already had, and make selection legible. Selection (idle mode — no drawing/SAM tool active): - single click selects the smallest mask under the cursor (segmentation or bbox); click on empty space clears - Shift+click toggles a mask; drag draws a rubber band that box-selects; Shift+drag adds. Esc cancels an in-progress band. Ctrl stays pan. - Delete removes the selected mask(s). Canvas selection is unified with the annotation list via AnnotationController.apply_canvas_selection, which mirrors onto the QListWidget (signals blocked) and matches by dict value-equality; Delete/Merge/Change Class are reused unchanged. Canvas Delete gates on the list selection (CanvasContext) so a stale highlight can't pop a spurious warning. Selection rendering — no longer recolours the mask red (invisible on a red-class mask). The mask keeps its class colour; a class-colour- independent overlay is drawn last: a dashed selection-blue bounding box plus bright handle squares at corners/edge-midpoints (open-garden-planner CAD style; handles are visual-only, resize is upstream bnsreenu#40). Class colours: default palette no longer starts on red — core/constants default_class_color (curated tab10-style, red last, muted) replaces the Qt.GlobalColor(n % 16 + 7) formula at the 4 assignment sites. Default fill opacity 0.3 -> 0.2 so masks don't bury the image. Saved projects keep their persisted colours. Tests: unit (hit-testing, gesture resolution, Esc-cancel, render-no- recolor, palette) + integration (controller selection mirror, canvas- delete gating). arc42: ADR-022 (+amendment), runtime, crosscutting, glossary, CLAUDE.md. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Canvas mask selection, multi-delete & visible selection styling (bnsreenu#75)
…nu#32, bnsreenu#36) Bundles three related annotation-geometry fixes: bnsreenu#40 — Direct-manipulation bbox editing. Selecting a single "bbox" annotation now makes its 8 selection handles (from bnsreenu#75) draggable: drag a handle to resize (opposite side anchored, stays rectangular, >=1px), drag the interior to move. No new mode, modeled on open-garden-planner's ResizeHandle (anchor- from-handle + per-handle cursors). Move is drag-gated past the click threshold so a plain click still selects (nested-mask click-through preserved). On release the box is clamped and persisted via bboxEditCommitted -> commit_bbox_edit; Esc reverts. bnsreenu#32 — Clamp manual edits. Polygon vertex edits and bbox drags now clamp coordinates into the image rectangle on commit (clamp_segmentation/clamp_bbox, per-coordinate so vertex count is preserved). Drawn shapes were already clipped. bnsreenu#36 — Clip augmented polygons. The Image Augmenter clips each transformed polygon to the image via a shapely intersection (clip_polygon_to_bounds, buffer(0) repair, largest part); polygons left fully outside are dropped. Geometry helpers live in utils.py. Docs: ADR-023 (bbox editing) + ADR-024 (clamp vs clip), runtime view, crosscutting, glossary, CLAUDE.md patterns + shortcuts; backlog rows removed. Tests: 30 new (geometry, bbox-edit lifecycle, controller persistence, augmenter clip). 234 passed, ruff clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…p collapse P1 (data loss): a bbox selected via the annotation LIST stored a value-equal copy (item.data(UserRole) round-trips as a copy) in highlighted_annotations, so the in-place handle-drag mutated a throwaway object and the edit was silently lost. _single_selected_bbox now resolves to the live object inside image_label.annotations by value-equality; _commit_bbox_drag re-points highlighted_annotations at that live object so re-selection survives the rebuild. P1 (geometry): clamp_bbox collapsed a moved box that crossed the top/left edge to a 1px sliver (independent-corner clamping is right for resize, wrong for move). Added fit_bbox_inside (size-preserving translate-inside) and use it for the move path; clamp_bbox stays the resize/trim clamp. P2: clip_polygon_to_bounds now drops shapely's duplicate closing vertex to match the app's unclosed flat-ring convention. Tests: +7 (fit_bbox_inside, top/left-off move preserves size, live-object resolution, list-selection-after-switch persistence). 241 passed, ruff clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- Split _single_selected_bbox (cheap, geometry-only, safe per-hover) from _live_annotation (the value-equality scan that resolves to the saved object); the press handler now resolves only on drag-arm, so the O(n) scan no longer runs on every hover frame. - Comment that the post-commit highlighted_annotations reassignment is a no-op for canvas-click selection and only matters for a stale list-selection copy. - Note the exact-tuple == in clip_polygon_to_bounds' closing-vertex drop. Re-review verdict: merge-ready, no P0/P1. 241 passed, ruff clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…ped annotations Manual GUI testing found the handles inert on every shape: the feature only armed for annotations with a "bbox" key, but in-app shapes (drawn rectangles, polygons, SAM/DINO masks) are all stored as "segmentation" — only imported COCO/YOLO boxes get a bbox key. So _single_selected_bbox always returned None and the drawn handles did nothing. Generalize to any single selected shape (user-confirmed: resize scales, drag- inside moves): - _single_selected_shape: any single annotation with a bounding box (seg or bbox). - _begin_shape_edit records kind: "seg" scales/translates vertices (_scale_segmentation / _translate_segmentation); "bbox" edits [x,y,w,h]. - _sync_bbox_key keeps an imported annotation's bbox consistent with its edited segmentation (feeds export/training). - Commit clamp by kind+mode: polygon move slides inside (shape-preserving) then clamp_segmentation as a safety net; polygon resize clamp_segmentation; box move fit_bbox_inside; box resize clamp_bbox. Docs (ADR-023, ADR-022 amendment, runtime, crosscutting, glossary, CLAUDE.md) updated to "shape editing". Tests: +6 (polygon scale/move/clamp/bbox-key-sync, polygon resize persistence). 247 passed, ruff clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Senior-review follow-ups: - _annotation_bbox / _annotation_contains crashed (None[0::2]) on imported bbox-only annotations, which carry "segmentation": None — exactly bnsreenu#40's original target, and the hover/select path now calls _annotation_bbox on every selected annotation. Both now fall through to the bbox key when segmentation is None/empty. Test locks selectable + resizable. - Refresh the stale self.bbox_edit init comment (now lists kind/orig_seg, "shape") and the hover-cursor comment (bbox -> shape). 248 passed, ruff clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
feat: Editable bboxes + out-of-bounds clamp/clip (bnsreenu#40, bnsreenu#32, bnsreenu#36)
…nsreenu#24 Closes the remaining piece of #24 (the "mask complexity — less ↔ more points" control; point add/remove was already covered by the SAM-points tool). - utils.simplify_polygon: Douglas-Peucker (cv2.approxPolyDP) thinning to a Detail % vertex budget (100 = raw), binary-searched epsilon. - Annotations panel: QListWidget → QTableWidget (ID | Class | Area | Detail %), mirroring the DINO ClassThresholdTable idiom (per-row spinbox, SelectRows, NoEditTriggers, stylesheet-only header). Col 0's UserRole holds the annotation (the bnsreenu#75 value-equality marker). Selection mirror uses setRangeSelected (additive) — selectRow() replaces in ExtendedSelection. count/item/selectedItems → rowCount/item(r,0)/row-deduped selectedIndexes across the bridge + CRUD. - Per-row Detail % spinbox → on_detail_pct_changed: resolves the live drawn object (_live_annotation), lazy-captures segmentation_raw, simplifies (or restores raw at 100), recomputes bbox, refreshes Area+UserRole in place, saves. valueChanged connected after the initial setValue so table builds don't fire it. - New keys segmentation_raw + detail_pct round-trip via .iap (ann.copy → JSON); exports emit the effective (simplified) segmentation. Docs: ADR-025, runtime, crosscutting, glossary; CLAUDE.md pattern row + backlog reconciled (drop closed bnsreenu#63 + done #24, add bnsreenu#74). Tests: +11 (simplify unit + table/persistence/export integration); existing bnsreenu#75/bnsreenu#40 selection tests adapted to the table. 259 passed, ruff clean on changed files. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
P1 (data loss): reshaping a thinned polygon with the bnsreenu#40 handles orphaned its segmentation_raw, so a later Detail %=100 reverted the reshape. _clamp_edited_shape now invalidates the baseline on a seg edit (drop segmentation_raw, reset detail_pct=100) — the edited geometry becomes the new raw. P1 (stale selection): on_detail_pct_changed mutated the live object but left highlighted_annotations holding the pre-simplify value, so the selection overlay drew stale geometry and a subsequent handle drag (_live_annotation) couldn't re-match. Now re-points highlighted_annotations at the mutated object. P2: corrected the binary-search comment (keeps the richest polygon within budget) and ADR-025's reversibility note (reshape resets the raw baseline). Tests: +2 seam tests (thin→reshape→baseline-invalidated; detail-change keeps selection resolvable for a handle drag). 261 passed, ruff clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Senior re-review round 2 (production fixes confirmed correct): - test_detail_change_keeps_selection_resolvable_for_handle_drag selected by identity (apply_canvas_selection), so it passed pre-fix too. Now selects via the table (update_highlighted_annotations stores a UserRole *copy*), so it actually exercises the stale-highlight bug and fails on pre-fix code. - Delete the orphaned delete_annotation (controller method + window delegate, no callers): its removeRow-without-rebuild was incompatible with the index- bound per-row spinbox lambdas — a tripwire for the next single-row-delete. - Glossary: Annotation List is a QTableWidget now, not a QListWidget. 261 passed, ruff clean on changed files. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
feat: Reversible per-annotation mask complexity (Detail %) — closes #24
… fixes Bundles seven related changes: Dataset splitter (dialogs/dataset_splitter.py) - bnsreenu#81: compute_split_counts() + bounded slices so a 0% subset yields exactly 0 images (was leaking the flooring remainder into test). - bnsreenu#80: auto-balance the train/val/test spin boxes so they always sum to 100 (val absorbs train; test→train absorb val; etc.). Frictionless destructive ops (annotation_controller.py) - Delete: removed the confirmation AND success dialogs — instant. - Merge: removed the keep/delete prompt (always replaces originals with the union) and the success dialog. Undo/redo for annotation edits (ADR-026) - New controllers/annotation_history.py: snapshot-based, per-image-key undo/redo stacks with deep-equal dedup and a depth cap. - record_history() choke-point before every synchronous mutation (finish poly/rect, delete, merge, change-class, eraser, SAM/DINO accept); deferred bbox/paint/temp gestures capture a baseline at start (editBaselineRequested) and push it at commit. - Detail-% drags coalesce to one undo entry. - Ctrl+Z / Ctrl+Y / Ctrl+Shift+Z as ApplicationShortcuts; undo/redo no-op during load, modal, text focus, or an in-flight gesture. Tool mode (annotator_window.py, sam_controller.py, image_label.py) - F: single activate_tool() choke-point makes all six tools (incl. SAM) mutually exclusive — a SAM tool can no longer be active alongside a manual tool. - G: Esc cancels the in-progress shape AND returns to selection mode (selectModeRequested -> activate_tool(None)). Docs: ADR-026, crosscutting concepts (tool activation, Esc), runtime view, CLAUDE.md shortcuts + patterns table. Tests: +114 (splitter math/balance, AnnotationHistory unit, history integration incl. mid-paint-undo + number-parity guards, tool mode). 378 passed, 3 skipped. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Vertex edits (double-click polygon edit) were the one annotation edit Ctrl+Z couldn't reverse. Their Enter-commit only refreshed the list and relied on a later save to persist, and Esc silently kept the in-place vertex drags instead of reverting them. - start_polygon_edit captures the segmentation + emits editBaselineRequested (undo baseline) on entry. - New polygonEditCommitted signal -> commit_polygon_edit syncs all_annotations (save_current_annotations) + pushes the baseline + refreshes the list. Gated on an actual geometry change. - Esc now reverts the drags from the captured original; _editing_polygon_orig is cleared on commit/cancel/delete/exit/clear. Tests: vertex-edit commit->undo and Esc-reverts-without-history. 380 passed, 3 skipped. ADR-026 + CLAUDE.md updated. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
switch_slice didn't call exit_editing_mode the way switch_image does, so editing a polygon then switching slice left editing_polygon and the new _editing_polygon_orig pointing at the previous slice's object (stale overlay). One-line parity fix; closes the leak for multi-dim stacks. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Bundles seven related changes across three themes. Full test suite green: 380 passed, 3 pre-existing skips (+116 new tests). Reviewed by the repo's senior-reviewer gate; two P1s found and fixed (mid-gesture undo guard; dead renumber in restore), re-reviewed clean.
1–2. Dataset splitter (
dialogs/dataset_splitter.py)compute_split_counts()distributes the flooring remainder only among subsets withpct > 0, and the test slice is now explicitly bounded. Counts always sum to N; a 0% subset gets exactly 0.3–4. Frictionless delete & merge (
controllers/annotation_controller.py)5. Undo / redo for annotation edits — ADR-026
A new
controllers/annotation_history.py(AnnotationHistory) keeps snapshot-based, per-image-key undo/redo stacks. Restoring a whole-image snapshot sidesteps the value-equality / renumber /segmentation_rawsubtleties a command-replay design would have to reproduce.record_history()choke-point before each synchronous mutation; deferred gestures (bbox drag, paint stroke, vertex edit) capture a baseline at gesture start (editBaselineRequested) and push it at commit, with a deep-equal dedup so aborted gestures leave no entry.all_annotations(it previously relied on a later save), and Esc now reverts the in-place vertex drags instead of silently keeping them.ApplicationShortcuts (the annotation-list table would otherwise eat Ctrl+Z); no-op during project load, an open modal, text-field focus, or an in-flight gesture. Undo persists via auto-save.6. Mutually-exclusive tools (F)
A single
ImageAnnotator.activate_tool()choke-point keepscurrent_tool, the SAM flags, and the toolbar button checks in sync, so a SAM tool can no longer be active at the same time as a manual tool.toggle_tooland the SAM toggles all delegate here.7. Esc → selection mode (G)
Pressing Esc now cancels any in-progress shape and deactivates the active tool, returning the canvas to selection mode (its default). Previously the tool stayed selected.
Tests
tests/unit/test_dataset_splitter_math.py,tests/ui/test_splitter_balance.py,tests/unit/test_annotation_history.py,tests/integration/test_annotation_history.py(incl. mid-paint-undo block, number-parity, and vertex-edit commit/Esc guards),tests/integration/test_tool_mode.py; smoke module list extended.Docs: ADR-026, crosscutting concepts (tool activation + Esc), runtime view, CLAUDE.md shortcuts + patterns table.
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