apps/web/src/components/DiffPanel.tsx                      | 246 +++++++++++++++++++++-----------
 apps/web/src/components/diffs/DiffFileTree.tsx             | 186 ++++++++++++++++++++++++
 apps/web/src/components/diffs/diffFileTree.logic.test.ts   |  69 +++++++++
 apps/web/src/components/diffs/diffFileTree.logic.ts        |  93 ++++++++++++
 apps/web/src/components/files/FileBrowserPanel.tsx         |  20 +--
 apps/web/src/components/pullRequest/PullRequestCodeTab.tsx | 215 +++++++++++++++++++---------
 apps/web/src/pierre-tree-theme.ts                          |  22 +++
 docs/user/source-control.md                                |   3 +
 8 files changed, 686 insertions(+), 168 deletions(-)