feat(git-graph): VS Code-style git graph with commit actions in History modal (#1431)

* feat(types): add parents to GitLogEntry and new commit action types

* feat(git): add parent hashes and --all flag to getLog

* fix(git): move record separator to start of log format string

* feat(git): add checkoutCommit server function and route

* feat(git): add cherryPick server function and route

* feat(git): add revertCommit server function and route

* feat(git): add resetToCommit server function and route

* fix(tests): make git service tests branch-name portable, add error path tests

* feat(client): add checkoutCommit, cherryPick, revertCommit, resetToCommit API wrappers

* feat(git-graph): add lane assignment algorithm with tests

* feat(git-graph): add GitGraphSegment per-row SVG renderer

* feat(i18n): add locale strings for git graph action buttons

* fix(git-graph): handle lane convergence, fix SVG path coords, add connector tests

* feat(git-graph): add ref badges and action buttons to HistoryCommitRow

* fix(git-graph): add loading guards to reset actions, use theme tokens for ref badges

* fix(git-graph): conditional hooks, stale graph log, conflict handling, i18n

* fix(types): replace toBeDefined with toBeTruthy, fix toast API usage

* fix(lint): remove unused variables

* fix(git-graph): fix SVG height causing 150px row spacing

* fix(git-graph): smooth bezier curves, fill row height, round line caps

* fix(git-graph): non-scaling-stroke fixes bezier white spaces, sort curves on top

* fix(git-graph): remove viewBox scaling, match SVG height to actual row height

* fix(git-graph): ResizeObserver tracks actual row height, eliminates SVG height mismatch

* feat(git-graph): replace SVG with Canvas for graph rendering

* fix(git-graph): isolate canvas from flex layout to prevent replaced-element height leak

* feat(git-graph): align action buttons, add confirmation popups for all actions

* fix(git-graph): address code review findings CR-001 through CR-005

- CR-001: VS Code getGitLog now forwards 'all' option and parses %P parents
- CR-002: VS Code bridge/gitService implement checkoutCommit, cherryPick,
  revertCommit, resetToCommit with conflict detection and hard-reset guard
- CR-003: server-side commit hash validated with /^[0-9a-fA-F]{7,40}$/
  in both routes.js and service.js; 12 new rejection tests added
- CR-004: cherry-pick/revert conflict path now refreshes fetchStatus/
  fetchBranches/fetchLog; conflict toast uses i18n keys in all 7 locales
- CR-005: corrected O(n) comment to O(n x lanes)

* fix(i18n): add zh-TW locale and common.language.traditionalChinese key to all locales

upstream/main added zh-TW.ts after branch diverged; CI type-check fails
when PR is merged because zh-TW.ts was missing all gitView.history.actions.*
keys and loadMore/loadingMore. Also adds common.language.traditionalChinese
to en.ts and all 6 non-English files to match upstream en.ts.

* fix: harden git history actions

* feat: split git history graph view

* chore: remove git graph planning docs

---------

Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

packages/ui/src/lib/i18n/messages/pl.ts

@@ -1491,11 +1491,39 @@ export const dict: Record<I18nKey, string> = {
   'gitView.header.identityTooltip': 'Git identity',
   'gitView.header.noIdentity': 'No identity',
   'gitView.header.noProfiles': 'No profiles available to apply.',
+  'gitView.header.repositoryViews': 'Widoki repozytorium',
   'gitView.header.removeRemoteAria': 'Remove Remote  aria label',
   'gitView.header.removeRemoteTitle': 'Remove Remote Title',
   'gitView.header.upstreamSynced': 'zsynchronizowano',
   'gitView.header.upstreamTooltip': 'Porównano z {target}.',
   'gitView.header.upstreamTooltipTracking': 'Porównano z {target}. Główne wskaźniki synchronizacji nadal odzwierciedlają {tracking}.',
+  'gitView.history.actions.cancelButton': 'Anuluj',
+  'gitView.history.actions.checkoutConfirm': 'Przełączyć na ten commit jako detached HEAD?',
+  'gitView.history.actions.cherryPickConfirm': 'Wykonać cherry-pick tego commitu na bieżącą gałąź?',
+  'gitView.history.actions.conflictToastDescription': 'Konflikty w: {files}. Rozwiąż je ręcznie i wykonaj commit albo przerwij przez git cherry-pick/revert --abort.',
+  'gitView.history.actions.conflictToastTitle': 'Konflikt',
+  'gitView.history.actions.confirmButton': 'Potwierdź',
+  'gitView.history.actions.mergeConfirm': 'Scalić ten commit z bieżącą gałęzią?',
+  'gitView.history.actions.rebaseConfirm': 'Przebazować bieżącą gałąź na ten commit?',
+  'gitView.history.actions.resetHardConfirm': 'Hard reset — HEAD zostanie przesunięty, a wszystkie niezatwierdzone zmiany trwale usunięte.',
+  'gitView.history.actions.resetMixedConfirm': 'Mixed reset — HEAD zostanie przesunięty, a zmiany zostaną usunięte ze stage.',
+  'gitView.history.actions.resetSoftConfirm': 'Soft reset — HEAD zostanie przesunięty, a staged zmiany zostaną zachowane.',
+  'gitView.history.actions.revertConfirm': 'Przygotować revert tego commitu?',
+  'gitView.history.actions.checkout': 'Checkout',
+  'gitView.history.actions.cherryPick': 'Cherry-pick',
+  'gitView.history.actions.createBranch': 'Utwórz gałąź tutaj',
+  'gitView.history.actions.createBranchConfirm': 'Utwórz',
+  'gitView.history.actions.createBranchPlaceholder': 'Nazwa gałęzi',
+  'gitView.history.actions.detachedHead': 'Checkout wykonany (detached HEAD)',
+  'gitView.history.actions.merge': 'Scal z bieżącą',
+  'gitView.history.actions.rebase': 'Rebase na ten commit',
+  'gitView.history.actions.reset': 'Reset...',
+  'gitView.history.actions.resetHard': 'Hard — usuń wszystkie zmiany',
+  'gitView.history.actions.resetHardConfirmButton': 'Usuń zmiany',
+  'gitView.history.actions.resetMixed': 'Mixed — usuń ze stage',
+  'gitView.history.actions.resetSoft': 'Soft — zachowaj staged',
+  'gitView.history.actions.revert': 'Revert',
+
   'gitView.history.binary': 'Binary',
   'gitView.history.binaryNoDiff': 'Binary file — no diff available',
   'gitView.history.commitsPlaceholder': 'Commits Placeholder',
@@ -1506,6 +1534,8 @@ export const dict: Record<I18nKey, string> = {
   'gitView.history.largeDiffTitle': 'Large diff ({count} changed lines)',
   'gitView.history.loadingDiff': 'Loading diff...',
   'gitView.history.loadingFiles': 'Loading files...',
+  'gitView.history.loadMore': 'Załaduj więcej',
+  'gitView.history.loadingMore': 'Ładowanie...',
   'gitView.history.logSize100': 'Log Size100',
   'gitView.history.logSize25': 'Log Size25',
   'gitView.history.logSize50': 'Log Size50',
@@ -1514,6 +1544,7 @@ export const dict: Record<I18nKey, string> = {
   'gitView.history.renamedNoDiff': 'Renamed file — diff not supported',
   'gitView.history.renderDiffAnyway': 'Render anyway',
   'gitView.history.title': 'History',
+  'gitView.graph.title': 'Graf',
   'gitView.integrate.checking': 'Sprawdzanie…',
   'gitView.integrate.cherryPickAbortedToast': 'Cherry-pick został przerwany',
   'gitView.integrate.cherryPickConflictDescription': 'Wykryto konflikt podczas cherry-pick.',