Merge branch 'main' into prod

Reviewed-on: #3

.gitea/workflows/windows-build.yml

@@ -1,12 +1,16 @@
-name: Build Windows EXE
+name: Build Releases
 
 on:
   push:
     branches:
       - "**"
 
+env:
+  APP_NAME: gitree
+
 jobs:
   build-windows:
+    name: Build Windows x64_86
     runs-on: ubuntu-latest
 
     steps:
@@ -14,6 +18,23 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: recursive
+          fetch-depth: 0
+
+      - name: Sync submodules
+        run: |
+          git submodule sync --recursive
+          git submodule update --init --force --recursive
+          git submodule status --recursive
+
+      - name: Generate build names
+        env:
+          GITEA_SHA: ${{ gitea.sha }}
+        run: |
+          short_sha="$(printf '%s' "$GITEA_SHA" | cut -c1-7)"
+
+          echo "BUILD_HASH=${short_sha}" >> "$GITHUB_ENV"
+          echo "WINDOWS_EXE=${APP_NAME}-windows-x64_86-${short_sha}.exe" >> "$GITHUB_ENV"
+          echo "WINDOWS_ARTIFACT=${APP_NAME}-windows-x64_86-${short_sha}" >> "$GITHUB_ENV"
 
       - name: Install dependencies
         run: |
@@ -25,10 +46,13 @@ jobs:
           cat > mingw-toolchain.cmake <<'EOF'
           set(CMAKE_SYSTEM_NAME Windows)
           set(CMAKE_SYSTEM_PROCESSOR x86_64)
+
           set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)
           set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)
           set(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
+
           set(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)
+
           set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
           set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
           set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
@@ -38,46 +62,339 @@ jobs:
         run: |
           cmake -S . -B build-win -G Ninja \
             -DCMAKE_TOOLCHAIN_FILE=mingw-toolchain.cmake \
-            -DCMAKE_BUILD_TYPE=Release
+            -DCMAKE_BUILD_TYPE=Release \
+            -DBUILD_SHARED_LIBS=OFF \
+            -DCMAKE_EXE_LINKER_FLAGS="-static -static-libgcc -static-libstdc++"
 
       - name: Build Windows executable
         run: cmake --build build-win --parallel
 
-      - name: Prepare artifact
+      - name: Locate Windows EXE
+        run: |
+          exe_path=""
+
+          if [ -f "build-win/bin/${APP_NAME}.exe" ]; then
+            exe_path="build-win/bin/${APP_NAME}.exe"
+          elif [ -f "build-win/bin/Gitree.exe" ]; then
+            exe_path="build-win/bin/Gitree.exe"
+          elif [ -f "build-win/bin/gitree.exe" ]; then
+            exe_path="build-win/bin/gitree.exe"
+          else
+            exe_path="$(find build-win -type f -iname '*.exe' | head -n 1)"
+          fi
+
+          if [ -z "$exe_path" ]; then
+            echo "Could not find built Windows EXE."
+            exit 1
+          fi
+
+          echo "WINDOWS_EXE_PATH=${exe_path}" >> "$GITHUB_ENV"
+          echo "Found Windows EXE: ${exe_path}"
+
+      - name: Verify static runtime linkage
+        run: |
+          dependencies="$(x86_64-w64-mingw32-objdump -p "$WINDOWS_EXE_PATH" | sed -n 's/.*DLL Name: //p')"
+
+          printf '%s\n' "$dependencies"
+
+          if printf '%s\n' "$dependencies" | grep -Eqi 'lib(gcc|stdc\+\+|winpthread).*\.dll'; then
+            echo "The executable still depends on a MinGW runtime DLL."
+            exit 1
+          fi
+
+      - name: Prepare Windows artifact
         run: |
           mkdir -p dist
-          cp build-win/bin/gitree.exe dist/Gitree-windows-x64.exe
+          cp "$WINDOWS_EXE_PATH" "dist/${WINDOWS_EXE}"
 
       - name: Upload Windows build
         uses: actions/upload-artifact@v3
         with:
-          name: Gitree-windows-x64
-          path: dist/Gitree-windows-x64.exe
+          name: ${{ env.WINDOWS_ARTIFACT }}
+          path: dist/${{ env.WINDOWS_EXE }}
           if-no-files-found: error
 
-      - name: Create prod release
-        if: ${{ gitea.ref_name == 'prod' }}
+  build-linux:
+    name: Build Linux x64 DEB
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - name: Sync submodules
+        run: |
+          git submodule sync --recursive
+          git submodule update --init --force --recursive
+          git submodule status --recursive
+
+      - name: Generate build names
         env:
-          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
-          GITEA_SERVER_URL: ${{ gitea.server_url }}
-          GITEA_REPOSITORY: ${{ gitea.repository }}
           GITEA_SHA: ${{ gitea.sha }}
-          GITEA_RUN_NUMBER: ${{ gitea.run_number }}
+        run: |
+          short_sha="$(printf '%s' "$GITEA_SHA" | cut -c1-7)"
+
+          echo "BUILD_HASH=${short_sha}" >> "$GITHUB_ENV"
+          echo "LINUX_DEB=${APP_NAME}-deb-x64-${short_sha}.deb" >> "$GITHUB_ENV"
+          echo "LINUX_ARTIFACT=${APP_NAME}-deb-x64-${short_sha}" >> "$GITHUB_ENV"
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            cmake ninja-build curl jq dpkg-dev \
+            libx11-dev libxrandr-dev libxinerama-dev libxcursor-dev libxi-dev libxext-dev \
+            libgl1-mesa-dev
+
+      - name: Configure Linux release build
+        run: |
+          cmake -S . -B build-linux -G Ninja \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DBUILD_SHARED_LIBS=OFF
+
+      - name: Build Linux executable
+        run: cmake --build build-linux --parallel
+
+      - name: Locate Linux executable
+        run: |
+          exe_path=""
+
+          if [ -f "build-linux/bin/${APP_NAME}" ]; then
+            exe_path="build-linux/bin/${APP_NAME}"
+          elif [ -f "build-linux/bin/Gitree" ]; then
+            exe_path="build-linux/bin/Gitree"
+          elif [ -f "build-linux/bin/gitree" ]; then
+            exe_path="build-linux/bin/gitree"
+          else
+            exe_path="$(find build-linux -type f -executable -name "${APP_NAME}" | head -n 1)"
+          fi
+
+          if [ -z "$exe_path" ]; then
+            echo "Could not find built Linux executable."
+            exit 1
+          fi
+
+          echo "LINUX_EXE_PATH=${exe_path}" >> "$GITHUB_ENV"
+          echo "Found Linux executable: ${exe_path}"
+
+      - name: Package Linux DEB
+        run: |
+          mkdir -p "pkg/DEBIAN"
+          mkdir -p "pkg/usr/bin"
+
+          cp "$LINUX_EXE_PATH" "pkg/usr/bin/${APP_NAME}"
+          chmod 755 "pkg/usr/bin/${APP_NAME}"
+
+          version="0.0.0+${BUILD_HASH}"
+
+          cat > "pkg/DEBIAN/control" <<EOF
+          Package: ${APP_NAME}
+          Version: ${version}
+          Section: utils
+          Priority: optional
+          Architecture: amd64
+          Maintainer: GigabiteStudios <ceo@gigabitestudios.xyz>
+          Description: ${APP_NAME}
+           ${APP_NAME} Linux x64 build.
+          EOF
+
+          mkdir -p dist
+          dpkg-deb --build pkg "dist/${LINUX_DEB}"
+
+      - name: Upload Linux DEB build
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ env.LINUX_ARTIFACT }}
+          path: dist/${{ env.LINUX_DEB }}
+          if-no-files-found: error
+
+  release:
+    name: Create Release
+    runs-on: ubuntu-latest
+    needs:
+      - build-windows
+      - build-linux
+    if: ${{ always() && gitea.ref_name == 'prod' }}
+
+    env:
+      GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+      GITEA_SERVER_URL: ${{ gitea.server_url }}
+      GITEA_REPOSITORY: ${{ gitea.repository }}
+      GITEA_SHA: ${{ gitea.sha }}
+      WINDOWS_RESULT: ${{ needs.build-windows.result }}
+      LINUX_RESULT: ${{ needs.build-linux.result }}
+      APP_NAME: gitree
+
+    steps:
+      - name: Check build results
+        run: |
+          echo "Windows result: ${WINDOWS_RESULT}"
+          echo "Linux result:   ${LINUX_RESULT}"
+
+          if [ "$WINDOWS_RESULT" != "success" ] && [ "$LINUX_RESULT" != "success" ]; then
+            echo "Both Windows and Linux builds failed. Refusing to create release."
+            exit 1
+          fi
+
+      - name: Check out repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - name: Sync submodules
+        run: |
+          git submodule sync --recursive
+          git submodule update --init --force --recursive
+          git submodule status --recursive
+
+      - name: Generate release names
+        run: |
+          short_sha="$(printf '%s' "$GITEA_SHA" | cut -c1-7)"
+
+          echo "BUILD_HASH=${short_sha}" >> "$GITHUB_ENV"
+          echo "RELEASE_TAG=release-${short_sha}" >> "$GITHUB_ENV"
+          echo "RELEASE_NAME=Release ${short_sha}" >> "$GITHUB_ENV"
+
+          echo "WINDOWS_EXE=${APP_NAME}-windows-x64_86-${short_sha}.exe" >> "$GITHUB_ENV"
+          echo "WINDOWS_ARTIFACT=${APP_NAME}-windows-x64_86-${short_sha}" >> "$GITHUB_ENV"
+
+          echo "LINUX_DEB=${APP_NAME}-deb-x64-${short_sha}.deb" >> "$GITHUB_ENV"
+          echo "LINUX_ARTIFACT=${APP_NAME}-deb-x64-${short_sha}" >> "$GITHUB_ENV"
+
+      - name: Install release dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y curl jq
+
+      - name: Download Windows artifact
+        if: ${{ needs.build-windows.result == 'success' }}
+        uses: actions/download-artifact@v3
+        with:
+          name: ${{ env.WINDOWS_ARTIFACT }}
+          path: release-assets
+
+      - name: Download Linux artifact
+        if: ${{ needs.build-linux.result == 'success' }}
+        uses: actions/download-artifact@v3
+        with:
+          name: ${{ env.LINUX_ARTIFACT }}
+          path: release-assets
+
+      - name: Create prod release
         run: |
           if [ -z "$GITEA_TOKEN" ]; then
             echo "The repository secret GITEA_TOKEN is required to publish prod releases."
             exit 1
           fi
 
-          short_sha="$(printf '%s' "$GITEA_SHA" | cut -c1-7)"
-          tag="prod-${GITEA_RUN_NUMBER}-${short_sha}"
+          git fetch --tags --force
+
           api="${GITEA_SERVER_URL%/}/api/v1/repos/${GITEA_REPOSITORY}"
+          repo_url="${GITEA_SERVER_URL%/}/${GITEA_REPOSITORY}"
+
+          previous_tag="$(
+            curl --fail-with-body --silent --show-error \
+              -H "Authorization: token ${GITEA_TOKEN}" \
+              "${api}/releases?limit=50" |
+            jq -r '[.[] | select(.tag_name | startswith("release-"))][0].tag_name // empty'
+          )"
+
+          if [ -n "$previous_tag" ]; then
+            range="${previous_tag}..${GITEA_SHA}"
+          else
+            range="${GITEA_SHA}"
+          fi
+
+          {
+            if [ -n "$previous_tag" ]; then
+              echo "## Changes since ${previous_tag}"
+            else
+              echo "## Changes"
+            fi
+
+            echo
+
+            commit_count="$(git rev-list --count "$range")"
+
+            if [ "$commit_count" -eq 0 ]; then
+              echo "- No commits found since the previous release."
+            else
+              git log "$range" \
+                --reverse \
+                --pretty=format:'%H%x1f%s' |
+              while IFS="$(printf '\037')" read -r hash subject; do
+                short="$(printf '%s' "$hash" | cut -c1-7)"
+                echo "- ([${short}](${repo_url}/commit/${hash})) ${subject}"
+              done
+            fi
+
+            echo
+            echo "## Builds"
+            echo
+
+            if [ "$WINDOWS_RESULT" = "success" ]; then
+              echo "- ${WINDOWS_EXE}"
+            else
+              echo "- Windows x64_86 failed"
+            fi
+
+            if [ "$LINUX_RESULT" = "success" ]; then
+              echo "- ${LINUX_DEB}"
+            else
+              echo "- Linux DEB x64 failed"
+            fi
+
+            echo
+            echo "## Authors"
+            echo
+            echo "Sorted by total lines added or removed."
+            echo
+
+            git log "$range" --numstat --format='author:%an <%ae>' |
+            awk '
+              /^author:/ {
+                author = substr($0, 8)
+                next
+              }
+
+              NF >= 3 {
+                added = ($1 == "-" ? 0 : $1)
+                removed = ($2 == "-" ? 0 : $2)
+
+                adds[author] += added
+                dels[author] += removed
+                churn[author] += added + removed
+              }
+
+              END {
+                for (a in churn) {
+                  printf "%d\t%d\t%d\t%s\n", churn[a], adds[a], dels[a], a
+                }
+              }
+            ' |
+            sort -nr |
+            while IFS="$(printf '\t')" read -r total added removed author; do
+              echo "- ${author} — ${total} lines changed (+${added} / -${removed})"
+            done
+          } > release-notes.md
 
           payload="$(jq -n \
-            --arg tag "$tag" \
+            --arg tag "$RELEASE_TAG" \
             --arg sha "$GITEA_SHA" \
-            --arg name "Gitree ${tag}" \
-            '{tag_name: $tag, target_commitish: $sha, name: $name, body: "Automated Windows release from the prod branch.", draft: false, prerelease: false}')"
+            --arg name "$RELEASE_NAME" \
+            --rawfile body release-notes.md \
+            '{
+              tag_name: $tag,
+              target_commitish: $sha,
+              name: $name,
+              body: $body,
+              draft: false,
+              prerelease: false
+            }')"
 
           release="$(curl --fail-with-body --silent --show-error \
             -X POST \
@@ -85,10 +402,21 @@ jobs:
             -H "Content-Type: application/json" \
             --data "$payload" \
             "${api}/releases")"
+
           release_id="$(printf '%s' "$release" | jq -er '.id')"
 
-          curl --fail-with-body --silent --show-error \
-            -X POST \
-            -H "Authorization: token ${GITEA_TOKEN}" \
-            -F "attachment=@dist/Gitree-windows-x64.exe" \
-            "${api}/releases/${release_id}/assets?name=Gitree-windows-x64.exe"
+          for asset in release-assets/*; do
+            if [ ! -f "$asset" ]; then
+              continue
+            fi
+
+            asset_name="$(basename "$asset")"
+
+            echo "Uploading ${asset_name}"
+
+            curl --fail-with-body --silent --show-error \
+              -X POST \
+              -H "Authorization: token ${GITEA_TOKEN}" \
+              -F "attachment=@${asset}" \
+              "${api}/releases/${release_id}/assets?name=${asset_name}"
+          done

.gitmodules

@@ -1,15 +1,15 @@
 [submodule "vendor/libgit2"]
 	path = vendor/libgit2
-	url = https://github.com/libgit2/libgit2.git
+	url = https://dock-it.dev/Idea-Studios/libgit2
 [submodule "vendor/imgui"]
 	path = vendor/imgui
-	url = https://github.com/ocornut/imgui.git
+	url = https://dock-it.dev/Idea-Studios/imgui
 [submodule "vendor/glfw"]
 	path = vendor/glfw
-	url = https://github.com/glfw/glfw.git
+	url = https://dock-it.dev/Idea-Studios/glfw
 [submodule "vendor/iZo"]
 	path = vendor/iZo
 	url = https://dock-it.dev/Idea-Studios/iZo
-[submodule "vendor/iKv"]
-	path = vendor/iKv
-	url = https://dock-it.dev/Idea-Studios/iKv
+[submodule "vendor/iKvxx"]
+	path = vendor/iKvxx
+	url = https://dock-it.dev/Idea-Studios/iKvxx

CMakeLists.txt

@@ -17,6 +17,10 @@ set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
 set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
 set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
 set(GLFW_INSTALL OFF CACHE BOOL "" FORCE)
+if(UNIX AND NOT APPLE)
+    set(GLFW_BUILD_X11 ON CACHE BOOL "" FORCE)
+    set(GLFW_BUILD_WAYLAND OFF CACHE BOOL "" FORCE)
+endif()
 add_subdirectory(vendor/glfw EXCLUDE_FROM_ALL)
 
 # Dear ImGui does not ship a CMake target, so keep its static-library recipe here.
@@ -46,11 +50,9 @@ add_subdirectory(vendor/libgit2 EXCLUDE_FROM_ALL)
 set(IZO_BUILD_EXAMPLE OFF CACHE BOOL "" FORCE)
 add_subdirectory(vendor/iZo EXCLUDE_FROM_ALL)
 
-# Persistent application settings and session data.
-set(IKV_BUILD_DEMOS OFF CACHE BOOL "" FORCE)
-set(IKV_BUILD_TESTS OFF CACHE BOOL "" FORCE)
-set(IKV_INSTALL OFF CACHE BOOL "" FORCE)
-add_subdirectory(vendor/iKv EXCLUDE_FROM_ALL)
+# Persistent application settings and session data (C++17 bindings for iKv).
+set(IKVXX_BUILD_TESTS OFF CACHE BOOL "" FORCE)
+add_subdirectory(vendor/iKvxx EXCLUDE_FROM_ALL)
 
 find_package(OpenGL REQUIRED)
 
@@ -70,22 +72,27 @@ add_executable(gitree WIN32
     src/managers/user_data.h
     src/managers/avatar_cache.cpp
     src/managers/avatar_cache.h
+    src/managers/application_manager.cpp
+    src/managers/application_manager.h
+    src/managers/application_icon_cache.cpp
+    src/managers/application_icon_cache.h
     src/models/repository.h
 )
 target_include_directories(gitree PRIVATE src vendor/libgit2/include vendor/icons)
-target_link_libraries(gitree PRIVATE imgui libgit2package iZo::izo ikv::ikv OpenGL::GL)
+target_link_libraries(gitree PRIVATE imgui libgit2package iZo::izo ikvxx::ikvxx OpenGL::GL)
 target_compile_definitions(gitree PRIVATE
     GITREE_VERSION="${PROJECT_VERSION}"
     GITREE_ASSET_DIR="${CMAKE_CURRENT_SOURCE_DIR}/vendor/fonts"
+    GITREE_IMAGE_ASSET_DIR="${CMAKE_CURRENT_SOURCE_DIR}/assets"
     $<$<PLATFORM_ID:Windows>:NOMINMAX;WIN32_LEAN_AND_MEAN>
 )
 
 if(WIN32)
-    target_link_libraries(gitree PRIVATE dwmapi urlmon windowscodecs bcrypt)
+    target_link_libraries(gitree PRIVATE dwmapi urlmon windowscodecs bcrypt crypt32)
 endif()
 
 if(MSVC)
-    target_compile_options(gitree PRIVATE /W4 /permissive-)
+    target_compile_options(gitree PRIVATE /W4 /permissive- /MP)
 else()
     target_compile_options(gitree PRIVATE -Wall -Wextra -Wpedantic)
 endif()

README.md

@@ -1,42 +1,97 @@
-# Gitree
+![Gitree banner](.gitea/images/gitree_banner_rounded.png)
 
-A native Dear ImGui Git client built with libgit2 and GLFW.
+[![Windows build](https://dock-it.dev/Idea-Studios/Gitree/actions/workflows/windows-build.yml/badge.svg?branch=prod)](https://dock-it.dev/Idea-Studios/Gitree/actions?workflow=windows-build.yml)
+[![Latest release](https://img.shields.io/gitea/v/release/Idea-Studios/Gitree?gitea_url=https%3A%2F%2Fdock-it.dev&label=release)](https://dock-it.dev/Idea-Studios/Gitree/releases/latest)
+[![Latest release builds](https://img.shields.io/badge/latest%20release-Windows_x64__86_%2B_Linux_x64_DEB-2ea043)](https://dock-it.dev/Idea-Studios/Gitree/releases/latest)
+[![C++](https://img.shields.io/badge/C%2B%2B-20-00599C?logo=cplusplus)](https://en.cppreference.com/w/cpp/20)
+[![License](https://img.shields.io/badge/license-CC_BY--SA_4.0-lightgrey.svg)](https://dock-it.dev/Idea-Studios/Gitree/src/branch/prod/LICENSE)
 
-## Build on Windows
+A fast, native Git desktop client for Windows.
 
-Clone with submodules, then run `run.bat`. The script configures a Release build,
-builds Gitree and launches it. You can pass a repository path to open it directly:
+## Download
+
+Download the current Windows x64_86 executable or Linux x64 DEB from the
+[latest release](https://dock-it.dev/Idea-Studios/Gitree/releases/latest), or browse
+[all releases](https://dock-it.dev/Idea-Studios/Gitree/releases).
+
+No installer is required: download the executable and run it.
+
+## Use Gitree
+
+Open Gitree, choose **Open repository**, and select a local Git repository. You can
+also pass its path when launching from a terminal:
+
+```powershell
+.\Gitree-windows-x64_86.exe C:\path\to\repository
+```
+
+Use the sidebar to switch branches and browse refs. Select a commit to inspect its
+details and changes. The commit area lets you stage files and create commits.
+
+## Build from source
+
+### Requirements
+
+- Windows 10 or later (x64_86)
+- [Git](https://git-scm.com/download/win)
+- [CMake 3.21 or later](https://cmake.org/download/)
+- A C++20 compiler: Visual Studio 2022 with the **Desktop development with C++**
+  workload, or a recent MinGW-w64 toolchain
+- Ninja is optional; `run.bat` uses it automatically when available
+
+Clone the repository with all submodules:
+
+```powershell
+git clone --recurse-submodules https://dock-it.dev/Idea-Studios/Gitree.git
+cd Gitree
+```
+
+If the repository was cloned without `--recurse-submodules`, initialize the
+dependencies before configuring the build:
+
+```powershell
+git submodule update --init --recursive
+```
+
+### Build and run automatically
+
+From a Developer PowerShell or Command Prompt:
+
+```bat
+run.bat
+```
+
+`run.bat` configures a Release build, builds Gitree, and launches it. Pass a
+repository path to open it immediately:
 
 ```bat
 run.bat C:\path\to\repository
 ```
 
-Manual build:
+### Build with Visual Studio 2022
 
-```bat
-git submodule update --init --recursive
-cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
-cmake --build build --parallel
+```powershell
+cmake -S . -B build -G "Visual Studio 17 2022" -A x64
+cmake --build build --config Release --parallel
+.\build\bin\Release\gitree.exe
 ```
 
-Vendored dependencies are pinned under `vendor/` and compiled as static libraries:
+### Build with Ninja
 
-- libgit2 1.9.4
-- Dear ImGui 1.92.8 (docking branch)
-- GLFW 3.4
-- iZo 0.1.0
+Run these commands in a shell where your compiler is available. For MSVC, use a
+Visual Studio Developer PowerShell or Developer Command Prompt.
 
-The bundled Inter variable font is licensed under the SIL Open Font License.
-Font Awesome Free icons are bundled from Attascii and merged into the ImGui font atlas.
+```powershell
+cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
+cmake --build build --parallel
+.\build\bin\gitree.exe
+```
 
-User settings, ImGui layout state, and recently closed repository history are stored in
-`%APPDATA%\Identity\Gitree` on Windows. The directory is created automatically.
-Commit avatars are resolved from normalized author emails through Gravatar and cached in
-the `avatars` subdirectory; an identicon is used when an account has no custom image.
+## License
 
-## Source layout
+Gitree is licensed under the [Creative Commons Attribution-ShareAlike 4.0
+International license](https://dock-it.dev/Idea-Studios/Gitree/src/branch/prod/LICENSE).
 
-- `src/managers/` owns Git, window, user-data, and avatar services.
-- `src/models/` contains repository and commit data models.
-- `src/ui/` contains the Dear ImGui application interface.
-- `src/main.cpp` is the minimal process entry point.
+## Powered by Idea Studios
+
+![Idea Studios Engine](.gitea/images/id-engine.jpg)

run.bat

@@ -14,8 +14,10 @@ if %errorlevel%==0 (
     set "GENERATOR="
 )
 
-cmake -S . -B build %GENERATOR% -DCMAKE_BUILD_TYPE=Release || exit /b 1
-cmake --build build --config Release --parallel || exit /b 1
+if not exist build\CMakeCache.txt (
+    cmake -S . -B build %GENERATOR% -DCMAKE_BUILD_TYPE=Release || exit /b 1
+)
+cmake --build build --config Release --parallel %NUMBER_OF_PROCESSORS% || exit /b 1
 
 if exist build\bin\gitree.exe (
     start "" build\bin\gitree.exe %*

src/managers/application_icon_cache.cpp

@@ -0,0 +1,97 @@
+#include "application_icon_cache.h"
+
+#include <GLFW/glfw3.h>
+#include <algorithm>
+#include <array>
+
+#ifdef _WIN32
+#include <windows.h>
+#include <shellapi.h>
+#endif
+
+ApplicationIconCache::~ApplicationIconCache()
+{
+    shutdown();
+}
+
+unsigned int ApplicationIconCache::textureFor(const std::filesystem::path &executable)
+{
+    if (executable.empty())
+        return 0;
+    const std::string key = executable.string();
+    const auto found = textures_.find(key);
+    if (found != textures_.end())
+        return found->second;
+    const unsigned int texture = loadTexture(executable);
+    textures_.emplace(key, texture);
+    return texture;
+}
+
+unsigned int ApplicationIconCache::loadTexture(const std::filesystem::path &executable) const
+{
+#ifdef _WIN32
+    HICON large_icon = nullptr;
+    HICON small_icon = nullptr;
+    if (ExtractIconExW(executable.wstring().c_str(), 0, &large_icon, &small_icon, 1) == 0)
+        return 0;
+    HICON icon = large_icon ? large_icon : small_icon;
+    if (!icon)
+        return 0;
+
+    constexpr int size = 32;
+    BITMAPINFO bitmap_info{};
+    bitmap_info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    bitmap_info.bmiHeader.biWidth = size;
+    bitmap_info.bmiHeader.biHeight = -size;
+    bitmap_info.bmiHeader.biPlanes = 1;
+    bitmap_info.bmiHeader.biBitCount = 32;
+    bitmap_info.bmiHeader.biCompression = BI_RGB;
+
+    void *pixels = nullptr;
+    HDC device = CreateCompatibleDC(nullptr);
+    HBITMAP bitmap = CreateDIBSection(device, &bitmap_info, DIB_RGB_COLORS, &pixels, nullptr, 0);
+    unsigned int texture = 0;
+    if (bitmap && pixels)
+    {
+        const HGDIOBJ previous = SelectObject(device, bitmap);
+        std::fill_n(static_cast<unsigned char *>(pixels), size * size * 4, 0);
+        if (DrawIconEx(device, 0, 0, icon, size, size, 0, nullptr, DI_NORMAL))
+        {
+            auto *rgba = static_cast<unsigned char *>(pixels);
+            for (int pixel = 0; pixel < size * size; ++pixel)
+                std::swap(rgba[pixel * 4], rgba[pixel * 4 + 2]);
+            glGenTextures(1, &texture);
+            glBindTexture(GL_TEXTURE_2D, texture);
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, size, size, 0,
+                         GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+            glBindTexture(GL_TEXTURE_2D, 0);
+        }
+        SelectObject(device, previous);
+    }
+    if (bitmap)
+        DeleteObject(bitmap);
+    if (device)
+        DeleteDC(device);
+    if (large_icon)
+        DestroyIcon(large_icon);
+    if (small_icon)
+        DestroyIcon(small_icon);
+    return texture;
+#else
+    (void)executable;
+    return 0;
+#endif
+}
+
+void ApplicationIconCache::shutdown()
+{
+    for (auto &[path, texture] : textures_)
+    {
+        (void)path;
+        if (texture)
+            glDeleteTextures(1, &texture);
+    }
+    textures_.clear();
+}

src/managers/application_icon_cache.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <filesystem>
+#include <map>
+#include <string>
+
+class ApplicationIconCache
+{
+public:
+    ~ApplicationIconCache();
+
+    ApplicationIconCache(const ApplicationIconCache &) = delete;
+    ApplicationIconCache &operator=(const ApplicationIconCache &) = delete;
+    ApplicationIconCache() = default;
+
+    unsigned int textureFor(const std::filesystem::path &executable);
+    void shutdown();
+
+private:
+    unsigned int loadTexture(const std::filesystem::path &executable) const;
+    std::map<std::string, unsigned int> textures_;
+};

src/managers/application_manager.cpp

@@ -0,0 +1,552 @@
+#include "managers/application_manager.h"
+
+#include <izo/Environment.hpp>
+#include <izo/Paths.hpp>
+#include <izo/Process.hpp>
+
+#include <algorithm>
+
+namespace
+{
+    std::filesystem::path environmentPath(const char *name)
+    {
+        const auto value = izo::GetEnvVar(name);
+        return value && !value->empty() ? std::filesystem::path(*value) : std::filesystem::path{};
+    }
+
+    std::filesystem::path under(const std::filesystem::path &root, const char *relative)
+    {
+        return root.empty() ? std::filesystem::path{} : root / relative;
+    }
+
+    std::filesystem::path firstExisting(std::initializer_list<std::filesystem::path> candidates)
+    {
+        std::error_code error;
+
+        for (const auto &candidate : candidates)
+        {
+            if (!candidate.empty() && std::filesystem::is_regular_file(candidate, error))
+                return candidate;
+        }
+
+        return {};
+    }
+
+    std::filesystem::path findExecutable(const std::filesystem::path &root, const char *filename)
+    {
+        std::error_code error;
+
+        if (root.empty() || !std::filesystem::is_directory(root, error))
+            return {};
+
+        for (std::filesystem::recursive_directory_iterator iterator(
+                 root, std::filesystem::directory_options::skip_permission_denied, error),
+             end;
+             iterator != end && !error; iterator.increment(error))
+        {
+            if (iterator->is_regular_file(error) && iterator->path().filename() == filename)
+                return iterator->path();
+        }
+
+        return {};
+    }
+}
+
+ApplicationManager::ApplicationManager()
+{
+    const auto local = izo::GetKnownPath(izo::KnownPath::LocalAppData);
+    const auto roaming = izo::GetKnownPath(izo::KnownPath::AppData);
+
+    const auto program_files = environmentPath("ProgramFiles");
+    const auto program_files_x86 = environmentPath("ProgramFiles(x86)");
+    const auto program_data = environmentPath("ProgramData");
+    const auto user_profile = environmentPath("USERPROFILE");
+    const auto windows = environmentPath("WINDIR");
+    const auto chocolatey = environmentPath("ChocolateyInstall");
+
+    auto add = [this](ExternalApplicationId id, const char *name, std::filesystem::path executable,
+                      std::vector<std::string> arguments = {})
+    {
+        const bool available = !executable.empty();
+        targets_.push_back({{id, name, available, std::move(executable)}, std::move(arguments)});
+        applications_.push_back(targets_.back().info);
+    };
+
+    // -------------------------------------------------------------------------
+    // VS Code-style editors
+    // -------------------------------------------------------------------------
+
+    add(ExternalApplicationId::visual_studio_code, "VS Code", firstExisting({
+        under(local, "Programs/Microsoft VS Code/Code.exe"),
+        under(program_files, "Microsoft VS Code/Code.exe"),
+        under(program_files_x86, "Microsoft VS Code/Code.exe"),
+        under(user_profile, "scoop/apps/vscode/current/Code.exe"),
+        under(chocolatey, "lib/vscode/tools/Code.exe"),
+    }));
+
+    add(ExternalApplicationId::visual_studio_code_insiders, "VS Code Insiders", firstExisting({
+        under(local, "Programs/Microsoft VS Code Insiders/Code - Insiders.exe"),
+        under(program_files, "Microsoft VS Code Insiders/Code - Insiders.exe"),
+        under(user_profile, "scoop/apps/vscode-insiders/current/Code - Insiders.exe"),
+    }));
+
+    add(ExternalApplicationId::vscodium, "VSCodium", firstExisting({
+        under(local, "Programs/VSCodium/VSCodium.exe"),
+        under(program_files, "VSCodium/VSCodium.exe"),
+        under(program_files_x86, "VSCodium/VSCodium.exe"),
+        under(user_profile, "scoop/apps/vscodium/current/VSCodium.exe"),
+        under(chocolatey, "lib/vscodium/tools/VSCodium.exe"),
+    }));
+
+    add(ExternalApplicationId::cursor, "Cursor", firstExisting({
+        under(local, "Programs/cursor/Cursor.exe"),
+        under(local, "Programs/Cursor/Cursor.exe"),
+        under(program_files, "Cursor/Cursor.exe"),
+        under(user_profile, "scoop/apps/cursor/current/Cursor.exe"),
+    }));
+
+    add(ExternalApplicationId::windsurf, "Windsurf", firstExisting({
+        under(local, "Programs/Windsurf/Windsurf.exe"),
+        under(program_files, "Windsurf/Windsurf.exe"),
+        under(user_profile, "scoop/apps/windsurf/current/Windsurf.exe"),
+    }));
+
+    add(ExternalApplicationId::trae, "Trae", firstExisting({
+        under(local, "Programs/Trae/Trae.exe"),
+        under(program_files, "Trae/Trae.exe"),
+    }));
+
+    add(ExternalApplicationId::zed, "Zed", firstExisting({
+        under(local, "Programs/Zed/Zed.exe"),
+        under(program_files, "Zed/Zed.exe"),
+        under(user_profile, "scoop/apps/zed/current/Zed.exe"),
+    }));
+
+    add(ExternalApplicationId::antigravity, "Antigravity", firstExisting({
+        under(local, "Programs/Antigravity/Antigravity.exe"),
+        under(local, "Antigravity/Antigravity.exe"),
+        under(program_files, "Antigravity/Antigravity.exe"),
+    }));
+
+    // -------------------------------------------------------------------------
+    // Microsoft IDEs
+    // -------------------------------------------------------------------------
+
+    add(ExternalApplicationId::visual_studio, "Visual Studio", firstExisting({
+        under(program_files, "Microsoft Visual Studio/2022/Community/Common7/IDE/devenv.exe"),
+        under(program_files, "Microsoft Visual Studio/2022/Professional/Common7/IDE/devenv.exe"),
+        under(program_files, "Microsoft Visual Studio/2022/Enterprise/Common7/IDE/devenv.exe"),
+        under(program_files, "Microsoft Visual Studio/2022/Preview/Common7/IDE/devenv.exe"),
+
+        under(program_files_x86, "Microsoft Visual Studio/2019/Community/Common7/IDE/devenv.exe"),
+        under(program_files_x86, "Microsoft Visual Studio/2019/Professional/Common7/IDE/devenv.exe"),
+        under(program_files_x86, "Microsoft Visual Studio/2019/Enterprise/Common7/IDE/devenv.exe"),
+        under(program_files_x86, "Microsoft Visual Studio/2019/Preview/Common7/IDE/devenv.exe"),
+    }));
+
+    // -------------------------------------------------------------------------
+    // GitHub / Windows tools
+    // -------------------------------------------------------------------------
+
+    std::filesystem::path github_desktop = firstExisting({
+        under(local, "GitHubDesktop/GitHubDesktop.exe"),
+        under(local, "GitHub Desktop/GitHubDesktop.exe"),
+    });
+
+    if (github_desktop.empty())
+        github_desktop = findExecutable(under(local, "GitHubDesktop"), "GitHubDesktop.exe");
+
+    add(ExternalApplicationId::github_desktop, "GitHub Desktop", std::move(github_desktop));
+
+    add(ExternalApplicationId::file_explorer, "File Explorer", firstExisting({
+        under(windows, "explorer.exe"),
+    }));
+
+    add(ExternalApplicationId::terminal, "Terminal", firstExisting({
+        under(local, "Microsoft/WindowsApps/wt.exe"),
+        under(windows, "System32/wt.exe"),
+    }), {"-d"});
+
+    add(ExternalApplicationId::git_bash, "Git Bash", firstExisting({
+        under(program_files, "Git/git-bash.exe"),
+        under(program_files_x86, "Git/git-bash.exe"),
+        under(user_profile, "scoop/apps/git/current/git-bash.exe"),
+    }), {"--cd="});
+
+    add(ExternalApplicationId::wsl, "WSL", firstExisting({
+        under(windows, "System32/wsl.exe"),
+    }), {"--cd"});
+
+    // -------------------------------------------------------------------------
+    // Android
+    // -------------------------------------------------------------------------
+
+    add(ExternalApplicationId::android_studio, "Android Studio", firstExisting({
+        under(program_files, "Android/Android Studio/bin/studio64.exe"),
+        under(local, "Programs/Android Studio/bin/studio64.exe"),
+        under(user_profile, "scoop/apps/android-studio/current/bin/studio64.exe"),
+    }));
+
+    // -------------------------------------------------------------------------
+    // JetBrains IDEs
+    // -------------------------------------------------------------------------
+
+    std::filesystem::path idea = firstExisting({
+        under(program_files, "JetBrains/IntelliJ IDEA 2026.1/bin/idea64.exe"),
+        under(program_files, "JetBrains/IntelliJ IDEA 2025.3/bin/idea64.exe"),
+        under(program_files, "JetBrains/IntelliJ IDEA 2025.2/bin/idea64.exe"),
+        under(program_files, "JetBrains/IntelliJ IDEA 2025.1/bin/idea64.exe"),
+        under(program_files, "JetBrains/IntelliJ IDEA 2024.3/bin/idea64.exe"),
+
+        under(program_files, "JetBrains/IntelliJ IDEA Community Edition 2026.1/bin/idea64.exe"),
+        under(program_files, "JetBrains/IntelliJ IDEA Community Edition 2025.3/bin/idea64.exe"),
+        under(program_files, "JetBrains/IntelliJ IDEA Community Edition 2025.2/bin/idea64.exe"),
+        under(program_files, "JetBrains/IntelliJ IDEA Community Edition 2025.1/bin/idea64.exe"),
+        under(program_files, "JetBrains/IntelliJ IDEA Community Edition 2024.3/bin/idea64.exe"),
+
+        under(local, "Programs/IntelliJ IDEA Ultimate/bin/idea64.exe"),
+        under(local, "Programs/IntelliJ IDEA Community/bin/idea64.exe"),
+    });
+
+    if (idea.empty())
+        idea = findExecutable(under(local, "JetBrains/Toolbox/apps"), "idea64.exe");
+
+    add(ExternalApplicationId::intellij_idea, "IntelliJ IDEA", std::move(idea));
+
+    std::filesystem::path clion = firstExisting({
+        under(program_files, "JetBrains/CLion 2026.1/bin/clion64.exe"),
+        under(program_files, "JetBrains/CLion 2025.3/bin/clion64.exe"),
+        under(program_files, "JetBrains/CLion 2025.2/bin/clion64.exe"),
+        under(program_files, "JetBrains/CLion 2025.1/bin/clion64.exe"),
+        under(program_files, "JetBrains/CLion 2024.3/bin/clion64.exe"),
+        under(local, "Programs/CLion/bin/clion64.exe"),
+    });
+
+    if (clion.empty())
+        clion = findExecutable(under(local, "JetBrains/Toolbox/apps"), "clion64.exe");
+
+    add(ExternalApplicationId::clion, "CLion", std::move(clion));
+
+    std::filesystem::path rider = firstExisting({
+        under(program_files, "JetBrains/JetBrains Rider 2026.1/bin/rider64.exe"),
+        under(program_files, "JetBrains/JetBrains Rider 2025.3/bin/rider64.exe"),
+        under(program_files, "JetBrains/JetBrains Rider 2025.2/bin/rider64.exe"),
+        under(program_files, "JetBrains/JetBrains Rider 2025.1/bin/rider64.exe"),
+        under(program_files, "JetBrains/JetBrains Rider 2024.3/bin/rider64.exe"),
+        under(local, "Programs/Rider/bin/rider64.exe"),
+    });
+
+    if (rider.empty())
+        rider = findExecutable(under(local, "JetBrains/Toolbox/apps"), "rider64.exe");
+
+    add(ExternalApplicationId::rider, "Rider", std::move(rider));
+
+    std::filesystem::path pycharm = firstExisting({
+        under(program_files, "JetBrains/PyCharm 2026.1/bin/pycharm64.exe"),
+        under(program_files, "JetBrains/PyCharm 2025.3/bin/pycharm64.exe"),
+        under(program_files, "JetBrains/PyCharm 2025.2/bin/pycharm64.exe"),
+        under(program_files, "JetBrains/PyCharm 2025.1/bin/pycharm64.exe"),
+        under(program_files, "JetBrains/PyCharm 2024.3/bin/pycharm64.exe"),
+
+        under(program_files, "JetBrains/PyCharm Community Edition 2026.1/bin/pycharm64.exe"),
+        under(program_files, "JetBrains/PyCharm Community Edition 2025.3/bin/pycharm64.exe"),
+        under(program_files, "JetBrains/PyCharm Community Edition 2025.2/bin/pycharm64.exe"),
+        under(program_files, "JetBrains/PyCharm Community Edition 2025.1/bin/pycharm64.exe"),
+        under(program_files, "JetBrains/PyCharm Community Edition 2024.3/bin/pycharm64.exe"),
+
+        under(local, "Programs/PyCharm Professional/bin/pycharm64.exe"),
+        under(local, "Programs/PyCharm Community/bin/pycharm64.exe"),
+    });
+
+    if (pycharm.empty())
+        pycharm = findExecutable(under(local, "JetBrains/Toolbox/apps"), "pycharm64.exe");
+
+    add(ExternalApplicationId::pycharm, "PyCharm", std::move(pycharm));
+
+    std::filesystem::path webstorm = firstExisting({
+        under(program_files, "JetBrains/WebStorm 2026.1/bin/webstorm64.exe"),
+        under(program_files, "JetBrains/WebStorm 2025.3/bin/webstorm64.exe"),
+        under(program_files, "JetBrains/WebStorm 2025.2/bin/webstorm64.exe"),
+        under(program_files, "JetBrains/WebStorm 2025.1/bin/webstorm64.exe"),
+        under(program_files, "JetBrains/WebStorm 2024.3/bin/webstorm64.exe"),
+        under(local, "Programs/WebStorm/bin/webstorm64.exe"),
+    });
+
+    if (webstorm.empty())
+        webstorm = findExecutable(under(local, "JetBrains/Toolbox/apps"), "webstorm64.exe");
+
+    add(ExternalApplicationId::webstorm, "WebStorm", std::move(webstorm));
+
+    std::filesystem::path phpstorm = firstExisting({
+        under(program_files, "JetBrains/PhpStorm 2026.1/bin/phpstorm64.exe"),
+        under(program_files, "JetBrains/PhpStorm 2025.3/bin/phpstorm64.exe"),
+        under(program_files, "JetBrains/PhpStorm 2025.2/bin/phpstorm64.exe"),
+        under(program_files, "JetBrains/PhpStorm 2025.1/bin/phpstorm64.exe"),
+        under(program_files, "JetBrains/PhpStorm 2024.3/bin/phpstorm64.exe"),
+        under(local, "Programs/PhpStorm/bin/phpstorm64.exe"),
+    });
+
+    if (phpstorm.empty())
+        phpstorm = findExecutable(under(local, "JetBrains/Toolbox/apps"), "phpstorm64.exe");
+
+    add(ExternalApplicationId::phpstorm, "PhpStorm", std::move(phpstorm));
+
+    std::filesystem::path rubymine = firstExisting({
+        under(program_files, "JetBrains/RubyMine 2026.1/bin/rubymine64.exe"),
+        under(program_files, "JetBrains/RubyMine 2025.3/bin/rubymine64.exe"),
+        under(program_files, "JetBrains/RubyMine 2025.2/bin/rubymine64.exe"),
+        under(program_files, "JetBrains/RubyMine 2025.1/bin/rubymine64.exe"),
+        under(program_files, "JetBrains/RubyMine 2024.3/bin/rubymine64.exe"),
+        under(local, "Programs/RubyMine/bin/rubymine64.exe"),
+    });
+
+    if (rubymine.empty())
+        rubymine = findExecutable(under(local, "JetBrains/Toolbox/apps"), "rubymine64.exe");
+
+    add(ExternalApplicationId::rubymine, "RubyMine", std::move(rubymine));
+
+    std::filesystem::path goland = firstExisting({
+        under(program_files, "JetBrains/GoLand 2026.1/bin/goland64.exe"),
+        under(program_files, "JetBrains/GoLand 2025.3/bin/goland64.exe"),
+        under(program_files, "JetBrains/GoLand 2025.2/bin/goland64.exe"),
+        under(program_files, "JetBrains/GoLand 2025.1/bin/goland64.exe"),
+        under(program_files, "JetBrains/GoLand 2024.3/bin/goland64.exe"),
+        under(local, "Programs/GoLand/bin/goland64.exe"),
+    });
+
+    if (goland.empty())
+        goland = findExecutable(under(local, "JetBrains/Toolbox/apps"), "goland64.exe");
+
+    add(ExternalApplicationId::goland, "GoLand", std::move(goland));
+
+    std::filesystem::path datagrip = firstExisting({
+        under(program_files, "JetBrains/DataGrip 2026.1/bin/datagrip64.exe"),
+        under(program_files, "JetBrains/DataGrip 2025.3/bin/datagrip64.exe"),
+        under(program_files, "JetBrains/DataGrip 2025.2/bin/datagrip64.exe"),
+        under(program_files, "JetBrains/DataGrip 2025.1/bin/datagrip64.exe"),
+        under(program_files, "JetBrains/DataGrip 2024.3/bin/datagrip64.exe"),
+        under(local, "Programs/DataGrip/bin/datagrip64.exe"),
+    });
+
+    if (datagrip.empty())
+        datagrip = findExecutable(under(local, "JetBrains/Toolbox/apps"), "datagrip64.exe");
+
+    add(ExternalApplicationId::datagrip, "DataGrip", std::move(datagrip));
+
+    add(ExternalApplicationId::jetbrains_fleet, "JetBrains Fleet", firstExisting({
+        under(local, "Programs/Fleet/Fleet.exe"),
+        under(local, "JetBrains/Fleet/bin/Fleet.exe"),
+        under(program_files, "JetBrains/Fleet/Fleet.exe"),
+    }));
+
+    // -------------------------------------------------------------------------
+    // Lightweight / general editors
+    // -------------------------------------------------------------------------
+
+    add(ExternalApplicationId::sublime_text, "Sublime Text", firstExisting({
+        under(program_files, "Sublime Text/sublime_text.exe"),
+        under(program_files, "Sublime Text 3/sublime_text.exe"),
+        under(program_files_x86, "Sublime Text/sublime_text.exe"),
+        under(local, "Programs/Sublime Text/sublime_text.exe"),
+        under(user_profile, "scoop/apps/sublime-text/current/sublime_text.exe"),
+    }));
+
+    add(ExternalApplicationId::notepad_plus_plus, "Notepad++", firstExisting({
+        under(program_files, "Notepad++/notepad++.exe"),
+        under(program_files_x86, "Notepad++/notepad++.exe"),
+        under(user_profile, "scoop/apps/notepadplusplus/current/notepad++.exe"),
+        under(chocolatey, "lib/notepadplusplus/tools/notepad++.exe"),
+    }));
+
+    add(ExternalApplicationId::atom, "Atom", firstExisting({
+        under(local, "atom/atom.exe"),
+        under(local, "Programs/Atom/atom.exe"),
+        under(program_files, "Atom/atom.exe"),
+    }));
+
+    add(ExternalApplicationId::pulsar, "Pulsar", firstExisting({
+        under(local, "Programs/Pulsar/Pulsar.exe"),
+        under(program_files, "Pulsar/Pulsar.exe"),
+    }));
+
+    add(ExternalApplicationId::brackets, "Brackets", firstExisting({
+        under(program_files, "Brackets/Brackets.exe"),
+        under(program_files_x86, "Brackets/Brackets.exe"),
+    }));
+
+    add(ExternalApplicationId::lapce, "Lapce", firstExisting({
+        under(local, "Programs/Lapce/Lapce.exe"),
+        under(program_files, "Lapce/Lapce.exe"),
+        under(user_profile, "scoop/apps/lapce/current/lapce.exe"),
+    }));
+
+    add(ExternalApplicationId::lite_xl, "Lite XL", firstExisting({
+        under(program_files, "Lite XL/lite-xl.exe"),
+        under(program_files_x86, "Lite XL/lite-xl.exe"),
+        under(user_profile, "scoop/apps/lite-xl/current/lite-xl.exe"),
+    }));
+
+    add(ExternalApplicationId::geany, "Geany", firstExisting({
+        under(program_files, "Geany/bin/geany.exe"),
+        under(program_files_x86, "Geany/bin/geany.exe"),
+        under(user_profile, "scoop/apps/geany/current/bin/geany.exe"),
+    }));
+
+    add(ExternalApplicationId::kate, "Kate", firstExisting({
+        under(program_files, "Kate/bin/kate.exe"),
+        under(program_files_x86, "Kate/bin/kate.exe"),
+        under(user_profile, "scoop/apps/kate/current/bin/kate.exe"),
+    }));
+
+    // -------------------------------------------------------------------------
+    // C/C++ / Java / general IDEs
+    // -------------------------------------------------------------------------
+
+    add(ExternalApplicationId::qt_creator, "Qt Creator", firstExisting({
+        under(program_files, "Qt/Tools/QtCreator/bin/qtcreator.exe"),
+        under(program_files_x86, "Qt/Tools/QtCreator/bin/qtcreator.exe"),
+        under(user_profile, "scoop/apps/qt-creator/current/bin/qtcreator.exe"),
+    }));
+
+    add(ExternalApplicationId::codeblocks, "Code::Blocks", firstExisting({
+        under(program_files, "CodeBlocks/codeblocks.exe"),
+        under(program_files_x86, "CodeBlocks/codeblocks.exe"),
+    }));
+
+    add(ExternalApplicationId::dev_cpp, "Dev-C++", firstExisting({
+        under(program_files, "Embarcadero/Dev-Cpp/devcpp.exe"),
+        under(program_files_x86, "Embarcadero/Dev-Cpp/devcpp.exe"),
+        under(program_files, "Dev-Cpp/devcpp.exe"),
+        under(program_files_x86, "Dev-Cpp/devcpp.exe"),
+    }));
+
+    add(ExternalApplicationId::eclipse, "Eclipse", firstExisting({
+        under(user_profile, "eclipse/java-latest-released/eclipse/eclipse.exe"),
+        under(program_files, "Eclipse Foundation/eclipse/eclipse.exe"),
+        under(program_files, "Eclipse/eclipse.exe"),
+        under(local, "Programs/Eclipse/eclipse.exe"),
+    }));
+
+    add(ExternalApplicationId::netbeans, "NetBeans", firstExisting({
+        under(program_files, "NetBeans-25/netbeans/bin/netbeans64.exe"),
+        under(program_files, "NetBeans-24/netbeans/bin/netbeans64.exe"),
+        under(program_files, "NetBeans-23/netbeans/bin/netbeans64.exe"),
+        under(program_files, "NetBeans/netbeans/bin/netbeans64.exe"),
+        under(program_files_x86, "NetBeans/netbeans/bin/netbeans.exe"),
+    }));
+
+    // -------------------------------------------------------------------------
+    // Terminal editors
+    // -------------------------------------------------------------------------
+
+    add(ExternalApplicationId::vim, "Vim", firstExisting({
+        under(program_files, "Vim/vim91/gvim.exe"),
+        under(program_files, "Vim/vim90/gvim.exe"),
+        under(program_files_x86, "Vim/vim91/gvim.exe"),
+        under(program_files_x86, "Vim/vim90/gvim.exe"),
+        under(user_profile, "scoop/apps/vim/current/gvim.exe"),
+    }));
+
+    add(ExternalApplicationId::neovim, "Neovim", firstExisting({
+        under(program_files, "Neovim/bin/nvim-qt.exe"),
+        under(program_files, "Neovim/bin/nvim.exe"),
+        under(local, "Programs/Neovim/bin/nvim-qt.exe"),
+        under(local, "Programs/Neovim/bin/nvim.exe"),
+        under(user_profile, "scoop/apps/neovim/current/bin/nvim.exe"),
+    }));
+
+    add(ExternalApplicationId::emacs, "Emacs", firstExisting({
+        under(program_files, "Emacs/x86_64/bin/runemacs.exe"),
+        under(program_files, "Emacs/bin/runemacs.exe"),
+        under(program_files_x86, "Emacs/bin/runemacs.exe"),
+        under(user_profile, "scoop/apps/emacs/current/bin/runemacs.exe"),
+    }));
+
+    add(ExternalApplicationId::helix, "Helix", firstExisting({
+        under(program_files, "helix/hx.exe"),
+        under(program_files_x86, "helix/hx.exe"),
+        under(user_profile, "scoop/apps/helix/current/hx.exe"),
+    }));
+}
+
+const ExternalApplication *ApplicationManager::application(ExternalApplicationId id) const
+{
+    const auto found = std::find_if(applications_.begin(), applications_.end(),
+                                    [id](const ExternalApplication &application)
+                                    {
+                                        return application.id == id;
+                                    });
+
+    return found == applications_.end() ? nullptr : &*found;
+}
+
+ExternalApplicationId ApplicationManager::defaultApplication() const
+{
+    const auto preferred = std::find_if(targets_.begin(), targets_.end(),
+                                        [](const LaunchTarget &target)
+                                        {
+                                            return target.info.available &&
+                                                   target.info.id != ExternalApplicationId::file_explorer &&
+                                                   target.info.id != ExternalApplicationId::terminal &&
+                                                   target.info.id != ExternalApplicationId::git_bash &&
+                                                   target.info.id != ExternalApplicationId::wsl;
+                                        });
+
+    if (preferred != targets_.end())
+        return preferred->info.id;
+
+    const auto available = std::find_if(targets_.begin(), targets_.end(),
+                                        [](const LaunchTarget &target)
+                                        {
+                                            return target.info.available;
+                                        });
+
+    return available == targets_.end()
+               ? ExternalApplicationId::file_explorer
+               : available->info.id;
+}
+
+bool ApplicationManager::launch(ExternalApplicationId application,
+                                const std::filesystem::path &repository,
+                                std::string &error) const
+{
+    const auto found = std::find_if(targets_.begin(), targets_.end(),
+                                    [application](const LaunchTarget &target)
+                                    {
+                                        return target.info.id == application;
+                                    });
+
+    if (found == targets_.end() || !found->info.available)
+    {
+        error = "The selected application is not installed";
+        return false;
+    }
+
+    std::vector<std::string> arguments = found->arguments;
+    const std::string repository_path = repository.string();
+
+    if (application == ExternalApplicationId::git_bash && !arguments.empty())
+    {
+        arguments.back() += repository_path;
+    }
+    else
+    {
+        arguments.push_back(repository_path);
+    }
+
+    const izo::ProcessResult result = izo::LaunchProcess({
+        found->info.executable,
+        std::move(arguments),
+        repository,
+        true,
+    });
+
+    if (!result)
+    {
+        error = result.errorMessage.empty() ? "Unable to launch application" : result.errorMessage;
+        return false;
+    }
+
+    error = "Opened repository in " + found->info.name;
+    return true;
+}

src/managers/application_manager.h

@@ -0,0 +1,89 @@
+#pragma once
+
+#include <filesystem>
+#include <string>
+#include <vector>
+
+enum class ExternalApplicationId
+{
+    visual_studio_code,
+    visual_studio_code_insiders,
+    vscodium,
+    cursor,
+    windsurf,
+    trae,
+    zed,
+    antigravity,
+
+    visual_studio,
+
+    github_desktop,
+    file_explorer,
+    terminal,
+    git_bash,
+    wsl,
+
+    android_studio,
+
+    intellij_idea,
+    clion,
+    rider,
+    pycharm,
+    webstorm,
+    phpstorm,
+    rubymine,
+    goland,
+    datagrip,
+    jetbrains_fleet,
+
+    sublime_text,
+    notepad_plus_plus,
+    atom,
+    pulsar,
+    brackets,
+    lapce,
+    lite_xl,
+    geany,
+    kate,
+
+    qt_creator,
+    codeblocks,
+    dev_cpp,
+    eclipse,
+    netbeans,
+
+    vim,
+    neovim,
+    emacs,
+    helix,
+};
+
+struct ExternalApplication
+{
+    ExternalApplicationId id;
+    std::string name;
+    bool available = false;
+    std::filesystem::path executable;
+};
+
+class ApplicationManager
+{
+public:
+    ApplicationManager();
+
+    const std::vector<ExternalApplication> &applications() const { return applications_; }
+    const ExternalApplication *application(ExternalApplicationId id) const;
+    ExternalApplicationId defaultApplication() const;
+    bool launch(ExternalApplicationId application, const std::filesystem::path &repository,
+                std::string &error) const;
+
+private:
+    struct LaunchTarget
+    {
+        ExternalApplication info;
+        std::vector<std::string> arguments;
+    };
+
+    std::vector<LaunchTarget> targets_;
+    std::vector<ExternalApplication> applications_;
+};

src/managers/avatar_cache.cpp

@@ -17,23 +17,31 @@
 #include <wincodec.h>
 #endif
 
-AvatarCache::AvatarCache(const std::filesystem::path& user_data_directory)
-    : directory_(user_data_directory / "avatars") {
+AvatarCache::AvatarCache(const std::filesystem::path &user_data_directory)
+    : directory_(user_data_directory / "avatars")
+{
     std::filesystem::create_directories(directory_);
 }
 
-AvatarCache::~AvatarCache() {
+AvatarCache::~AvatarCache()
+{
     shutdown();
 }
 
-std::string AvatarCache::hashEmail(const std::string& email) const {
+std::string AvatarCache::hashEmail(const std::string &email) const
+{
     std::string normalized = email;
     normalized.erase(normalized.begin(), std::find_if(normalized.begin(), normalized.end(),
-        [](unsigned char value) { return !std::isspace(value); }));
+                                                      [](unsigned char value)
+                                                      { return !std::isspace(value); }));
     normalized.erase(std::find_if(normalized.rbegin(), normalized.rend(),
-        [](unsigned char value) { return !std::isspace(value); }).base(), normalized.end());
+                                  [](unsigned char value)
+                                  { return !std::isspace(value); })
+                         .base(),
+                     normalized.end());
     std::transform(normalized.begin(), normalized.end(), normalized.begin(),
-        [](unsigned char value) { return static_cast<char>(std::tolower(value)); });
+                   [](unsigned char value)
+                   { return static_cast<char>(std::tolower(value)); });
 
 #ifdef _WIN32
     BCRYPT_ALG_HANDLE algorithm = nullptr;
@@ -43,99 +51,121 @@ std::string AvatarCache::hashEmail(const std::string& email) const {
     DWORD written = 0;
     if (BCryptOpenAlgorithmProvider(&algorithm, BCRYPT_MD5_ALGORITHM, nullptr, 0) < 0 ||
         BCryptGetProperty(algorithm, BCRYPT_OBJECT_LENGTH, reinterpret_cast<PUCHAR>(&object_size),
-            sizeof(object_size), &written, 0) < 0) {
-        if (algorithm) BCryptCloseAlgorithmProvider(algorithm, 0);
+                          sizeof(object_size), &written, 0) < 0)
+    {
+        if (algorithm)
+            BCryptCloseAlgorithmProvider(algorithm, 0);
         return {};
     }
     std::vector<unsigned char> object(object_size);
     if (BCryptCreateHash(algorithm, &hash, object.data(), object_size, nullptr, 0, 0) < 0 ||
         BCryptHashData(hash, reinterpret_cast<PUCHAR>(normalized.data()),
-            static_cast<ULONG>(normalized.size()), 0) < 0 ||
-        BCryptFinishHash(hash, digest.data(), static_cast<ULONG>(digest.size()), 0) < 0) {
-        if (hash) BCryptDestroyHash(hash);
+                       static_cast<ULONG>(normalized.size()), 0) < 0 ||
+        BCryptFinishHash(hash, digest.data(), static_cast<ULONG>(digest.size()), 0) < 0)
+    {
+        if (hash)
+            BCryptDestroyHash(hash);
         BCryptCloseAlgorithmProvider(algorithm, 0);
         return {};
     }
     BCryptDestroyHash(hash);
     BCryptCloseAlgorithmProvider(algorithm, 0);
     std::ostringstream output;
-    for (unsigned char value : digest) output << std::hex << std::setw(2) << std::setfill('0') << static_cast<int>(value);
+    for (unsigned char value : digest)
+        output << std::hex << std::setw(2) << std::setfill('0') << static_cast<int>(value);
     return output.str();
 #else
     return std::to_string(std::hash<std::string>{}(normalized));
 #endif
 }
 
-unsigned int AvatarCache::textureFor(const std::string& email) {
-    if (email.empty()) return 0;
+unsigned int AvatarCache::textureFor(const std::string &email)
+{
+    if (email.empty())
+        return 0;
     const std::string hash = hashEmail(email);
-    if (hash.empty()) return 0;
-    Entry& entry = entries_[hash];
-    if (entry.texture) return entry.texture;
-    if (entry.requested) return 0;
+    if (hash.empty())
+        return 0;
+    Entry &entry = entries_[hash];
+    if (entry.texture)
+        return entry.texture;
+    if (entry.requested)
+        return 0;
 
     entry.requested = true;
     entry.file = directory_ / (hash + ".img");
-    if (std::filesystem::exists(entry.file)) {
+    if (std::filesystem::exists(entry.file))
+    {
         entry.texture = loadTexture(entry.file);
         return entry.texture;
     }
 #ifdef _WIN32
     const std::filesystem::path file = entry.file;
     const std::wstring url = L"https://www.gravatar.com/avatar/" +
-        std::wstring(hash.begin(), hash.end()) + L"?s=64&d=identicon&r=g";
-    entry.download = std::async(std::launch::async, [file, url] {
-        return SUCCEEDED(URLDownloadToFileW(nullptr, url.c_str(), file.wstring().c_str(), 0, nullptr));
-    });
+                             std::wstring(hash.begin(), hash.end()) + L"?s=64&d=identicon&r=g";
+    entry.download = std::async(std::launch::async, [file, url]
+                                { return SUCCEEDED(URLDownloadToFileW(nullptr, url.c_str(), file.wstring().c_str(), 0, nullptr)); });
 #endif
     return 0;
 }
 
-void AvatarCache::update() {
-    for (auto& [hash, entry] : entries_) {
+void AvatarCache::update()
+{
+    for (auto &[hash, entry] : entries_)
+    {
         (void)hash;
-        if (entry.texture || !entry.download.valid()) continue;
-        if (entry.download.wait_for(std::chrono::seconds(0)) != std::future_status::ready) continue;
-        if (entry.download.get()) entry.texture = loadTexture(entry.file);
+        if (entry.texture || !entry.download.valid())
+            continue;
+        if (entry.download.wait_for(std::chrono::seconds(0)) != std::future_status::ready)
+            continue;
+        if (entry.download.get())
+            entry.texture = loadTexture(entry.file);
     }
 }
 
-unsigned int AvatarCache::loadTexture(const std::filesystem::path& file) const {
+unsigned int AvatarCache::loadTexture(const std::filesystem::path &file) const
+{
 #ifdef _WIN32
     CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
-    IWICImagingFactory* factory = nullptr;
-    IWICBitmapDecoder* decoder = nullptr;
-    IWICBitmapFrameDecode* frame = nullptr;
-    IWICFormatConverter* converter = nullptr;
+    IWICImagingFactory *factory = nullptr;
+    IWICBitmapDecoder *decoder = nullptr;
+    IWICBitmapFrameDecode *frame = nullptr;
+    IWICFormatConverter *converter = nullptr;
     UINT width = 0;
     UINT height = 0;
     std::vector<unsigned char> pixels;
     unsigned int texture = 0;
     if (SUCCEEDED(CoCreateInstance(CLSID_WICImagingFactory, nullptr, CLSCTX_INPROC_SERVER,
-            IID_PPV_ARGS(&factory))) &&
+                                   IID_PPV_ARGS(&factory))) &&
         SUCCEEDED(factory->CreateDecoderFromFilename(file.wstring().c_str(), nullptr, GENERIC_READ,
-            WICDecodeMetadataCacheOnLoad, &decoder)) &&
+                                                     WICDecodeMetadataCacheOnLoad, &decoder)) &&
         SUCCEEDED(decoder->GetFrame(0, &frame)) &&
         SUCCEEDED(factory->CreateFormatConverter(&converter)) &&
         SUCCEEDED(converter->Initialize(frame, GUID_WICPixelFormat32bppRGBA,
-            WICBitmapDitherTypeNone, nullptr, 0.0, WICBitmapPaletteTypeCustom)) &&
-        SUCCEEDED(converter->GetSize(&width, &height))) {
+                                        WICBitmapDitherTypeNone, nullptr, 0.0, WICBitmapPaletteTypeCustom)) &&
+        SUCCEEDED(converter->GetSize(&width, &height)))
+    {
         pixels.resize(static_cast<size_t>(width) * height * 4);
         if (SUCCEEDED(converter->CopyPixels(nullptr, width * 4,
-                static_cast<UINT>(pixels.size()), pixels.data()))) {
+                                            static_cast<UINT>(pixels.size()), pixels.data())))
+        {
             glGenTextures(1, &texture);
             glBindTexture(GL_TEXTURE_2D, texture);
             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
             glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
             glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, static_cast<int>(width), static_cast<int>(height),
-                0, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data());
+                         0, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data());
             glBindTexture(GL_TEXTURE_2D, 0);
         }
     }
-    if (converter) converter->Release();
-    if (frame) frame->Release();
-    if (decoder) decoder->Release();
-    if (factory) factory->Release();
+    if (converter)
+        converter->Release();
+    if (frame)
+        frame->Release();
+    if (decoder)
+        decoder->Release();
+    if (factory)
+        factory->Release();
     CoUninitialize();
     return texture;
 #else
@@ -144,11 +174,15 @@ unsigned int AvatarCache::loadTexture(const std::filesystem::path& file) const {
 #endif
 }
 
-void AvatarCache::shutdown() {
-    for (auto& [hash, entry] : entries_) {
+void AvatarCache::shutdown()
+{
+    for (auto &[hash, entry] : entries_)
+    {
         (void)hash;
-        if (entry.download.valid()) entry.download.wait();
-        if (entry.texture) glDeleteTextures(1, &entry.texture);
+        if (entry.download.valid())
+            entry.download.wait();
+        if (entry.texture)
+            glDeleteTextures(1, &entry.texture);
         entry.texture = 0;
     }
     entries_.clear();

src/managers/avatar_cache.h

@@ -5,28 +5,30 @@
 #include <map>
 #include <string>
 
-class AvatarCache {
+class AvatarCache
+{
 public:
-    explicit AvatarCache(const std::filesystem::path& user_data_directory);
+    explicit AvatarCache(const std::filesystem::path &user_data_directory);
     ~AvatarCache();
 
-    AvatarCache(const AvatarCache&) = delete;
-    AvatarCache& operator=(const AvatarCache&) = delete;
+    AvatarCache(const AvatarCache &) = delete;
+    AvatarCache &operator=(const AvatarCache &) = delete;
 
-    unsigned int textureFor(const std::string& email);
+    unsigned int textureFor(const std::string &email);
     void update();
     void shutdown();
 
 private:
-    struct Entry {
+    struct Entry
+    {
         unsigned int texture = 0;
         bool requested = false;
         std::filesystem::path file;
         std::future<bool> download;
     };
 
-    std::string hashEmail(const std::string& email) const;
-    unsigned int loadTexture(const std::filesystem::path& file) const;
+    std::string hashEmail(const std::string &email) const;
+    unsigned int loadTexture(const std::filesystem::path &file) const;
     std::filesystem::path directory_;
     std::map<std::string, Entry> entries_;
 };

src/managers/git_manager.h

@@ -1,59 +1,91 @@
-#pragma once
-
+#pragma once
+
 #include "models/repository.h"
+#include <optional>
 #include <string>
 #include <vector>
 
-class GitManager {
+struct GitAuthOverride
+{
+    std::string remote_url;
+    std::string username;
+    std::string password;
+};
+
+class GitManager
+{
 public:
     GitManager();
     ~GitManager();
 
-    bool openRepository(RepositoryView& repository, const std::string& path, std::string& error);
-    bool initializeRepository(RepositoryView& repository, const std::string& path, std::string& error);
-    bool reload(RepositoryView& repository, std::string& error);
-    bool loadMoreCommits(RepositoryView& repository, size_t page_size, std::string& error);
-    bool checkoutBranch(RepositoryView& repository, const std::string& branch, std::string& error);
-    bool fetch(RepositoryView& repository, const std::string& remote, std::string& error);
-    bool pull(RepositoryView& repository, int mode, std::string& error);
-    bool push(RepositoryView& repository, std::string& error);
-    bool stash(RepositoryView& repository, std::string& error);
-    bool popStash(RepositoryView& repository, std::string& error);
-    bool undoCommit(RepositoryView& repository, std::string& error);
-    bool redoCommit(RepositoryView& repository, std::string& error);
-    bool stageAll(RepositoryView& repository, std::string& error);
-    bool stageFile(RepositoryView& repository, const std::string& path, std::string& error);
-    bool unstageFile(RepositoryView& repository, const std::string& path, std::string& error);
-    bool discardFile(RepositoryView& repository, const std::string& path, std::string& error);
-    bool discardAll(RepositoryView& repository, std::string& error);
-    bool commit(RepositoryView& repository, const std::string& summary,
-        const std::string& description, bool amend, std::string& error);
-    bool createBranch(RepositoryView& repository, const std::string& name,
-        const std::string& start_point, bool checkout, std::string& error);
-    bool createTag(RepositoryView& repository, const std::string& name,
-        const std::string& target, std::string& error);
-    bool addRemote(RepositoryView& repository, const std::string& name,
-        const std::string& url, std::string& error);
-    bool addWorktree(RepositoryView& repository, const std::string& path,
-        const std::string& branch, std::string& error);
-    bool addSubmodule(RepositoryView& repository, const std::string& url,
-        const std::string& path, std::string& error);
-    bool updateSubmodule(RepositoryView& repository, const std::string& name, std::string& error);
-    std::string worktreePath(RepositoryView& repository, const std::string& name, std::string& error);
-    bool loadCommitChanges(RepositoryView& repository, int commit_index, std::string& error);
-    bool captureGit(RepositoryView& repository, const std::vector<std::string>& arguments,
-        std::string& output, std::string& error);
-    bool applyPatch(RepositoryView& repository, const std::string& patch, bool cached,
-        bool reverse, std::string& error);
+    bool openRepositoryHandle(RepositoryView &repository, const std::string &path, std::string &error);
+    bool openRepository(RepositoryView &repository, const std::string &path, std::string &error);
+    bool initializeRepository(RepositoryView &repository, const std::string &path,
+                              const std::string &initial_branch, std::string &error);
+    bool cloneRepository(RepositoryView &repository, const std::string &url,
+                         const std::string &path, bool shallow, std::string &error);
+    bool reload(RepositoryView &repository, std::string &error);
+    bool loadMoreCommits(RepositoryView &repository, size_t page_size, std::string &error);
+    bool checkoutBranch(RepositoryView &repository, const std::string &branch, std::string &error);
+    bool mergeBranch(RepositoryView &repository, const std::string &source_branch,
+                     const std::string &target_branch, std::string &error);
+    bool fetch(RepositoryView &repository, const std::string &remote, std::string &error,
+               const std::optional<GitAuthOverride> &auth = std::nullopt);
+    bool pull(RepositoryView &repository, int mode, std::string &error,
+              const std::optional<GitAuthOverride> &auth = std::nullopt);
+    bool push(RepositoryView &repository, std::string &error,
+              const std::optional<GitAuthOverride> &auth = std::nullopt);
+    bool pushBranch(RepositoryView &repository, const std::string &branch, std::string &error,
+                    const std::optional<GitAuthOverride> &auth = std::nullopt);
+    bool stash(RepositoryView &repository, std::string &error);
+    bool popStash(RepositoryView &repository, std::string &error);
+    bool undoCommit(RepositoryView &repository, std::string &error);
+    bool redoCommit(RepositoryView &repository, std::string &error);
+    bool stageAll(RepositoryView &repository, std::string &error);
+    bool unstageAll(RepositoryView &repository, std::string &error);
+    bool stageFile(RepositoryView &repository, const std::string &path, std::string &error);
+    bool unstageFile(RepositoryView &repository, const std::string &path, std::string &error);
+    bool discardFile(RepositoryView &repository, const std::string &path, std::string &error);
+    bool discardAll(RepositoryView &repository, std::string &error);
+    bool commit(RepositoryView &repository, const std::string &summary,
+                const std::string &description, bool amend, std::string &error);
+    bool createBranch(RepositoryView &repository, const std::string &name,
+                      const std::string &start_point, bool checkout, std::string &error);
+    bool createTag(RepositoryView &repository, const std::string &name,
+                   const std::string &target, std::string &error);
+    bool addRemote(RepositoryView &repository, const std::string &name,
+                   const std::string &url, std::string &error);
+    bool addWorktree(RepositoryView &repository, const std::string &path,
+                     const std::string &branch, std::string &error);
+    bool addSubmodule(RepositoryView &repository, const std::string &url,
+                      const std::string &path, std::string &error);
+    bool updateSubmodule(RepositoryView &repository, const std::string &name, std::string &error);
+    std::string worktreePath(RepositoryView &repository, const std::string &name, std::string &error);
+    bool loadCommitChanges(RepositoryView &repository, int commit_index, std::string &error);
+    bool loadCommitFiles(RepositoryView &repository, int commit_index, std::string &error);
+    bool captureGit(RepositoryView &repository, const std::vector<std::string> &arguments,
+                    std::string &output, std::string &error,
+                    const std::string *stdin_data = nullptr);
+    bool applyPatch(RepositoryView &repository, const std::string &patch, bool cached,
+                    bool reverse, std::string &error);
+    std::string remoteUrl(RepositoryView &repository, const std::string &remote_name, std::string &error);
+    bool storeCredential(RepositoryView &repository, const std::string &remote_url,
+                         const std::string &username, const std::string &password,
+                         std::string &error);
+    static bool isAuthenticationFailure(std::string_view message);
 
 private:
-    static std::string lastError(const char* fallback);
-    static std::string formatTime(git_time_t value, int offset_minutes);
-    void readBranches(RepositoryView& repository, git_branch_t type, std::vector<std::string>& output);
-    void loadRefBadges(RepositoryView& repository);
-    void computeGraphLanes(RepositoryView& repository);
-    bool loadRepositoryData(RepositoryView& repository, std::string& error);
-    void loadWorkingTree(RepositoryView& repository);
-    bool runGit(RepositoryView& repository, const std::vector<std::string>& arguments,
-        const char* success_message, std::string& message, bool reload = true);
+    static std::string lastError(const char *fallback);
+    static std::string formatTime(git_time_t value, int offset_minutes);
+    void loadToolbarHistoryActions(RepositoryView &repository);
+    void readBranches(RepositoryView &repository, git_branch_t type, std::vector<std::string> &output);
+    void loadBranchDivergence(RepositoryView &repository);
+    void loadRefBadges(RepositoryView &repository);
+    void computeGraphLanes(RepositoryView &repository);
+    bool loadRepositoryData(RepositoryView &repository, std::string &error);
+    void loadWorkingTree(RepositoryView &repository);
+    bool prepareCredentials(RepositoryView &repository, std::string &error);
+    bool runGit(RepositoryView &repository, const std::vector<std::string> &arguments,
+                const char *success_message, std::string &message, bool reload = true,
+                const std::optional<GitAuthOverride> &auth = std::nullopt);
 };

src/managers/user_data.cpp

@@ -1,155 +1,645 @@
 #include "user_data.h"
 
-extern "C" {
-#include <ikv.h>
-}
+#include <izo/Paths.hpp>
+#include <ikvxx/ikvxx.hpp>
 
 #include <algorithm>
-#include <cstdlib>
 #include <fstream>
 #include <iomanip>
+#include <optional>
+#include <sstream>
 #include <utility>
 
-namespace {
-std::filesystem::path roaming_directory() {
 #ifdef _WIN32
-    if (const char* appdata = std::getenv("APPDATA")) return appdata;
+#include <windows.h>
+#include <wincrypt.h>
 #endif
-    if (const char* home = std::getenv("HOME")) return std::filesystem::path(home) / ".config";
-    return std::filesystem::temp_directory_path();
-}
 
+namespace
+{
+    using ArrayIndex = ikv::Value::ArrayIndex;
 
-const ikv_node_t* object_value(const ikv_node_t* object, const char* key, ikv_type_t type) {
-    const ikv_node_t* value = object ? ikv_object_get(object, key) : nullptr;
-    return value && ikv_node_type(value) == type ? value : nullptr;
-}
-}
+    std::filesystem::path roaming_directory()
+    {
+        if (const auto config = izo::GetKnownPath(izo::KnownPath::Config); !config.empty())
+            return config;
+        if (const auto temporary = izo::GetKnownPath(izo::KnownPath::Temporary); !temporary.empty())
+            return temporary;
+        return std::filesystem::temp_directory_path();
+    }
 
-UserData::UserData() {
+    std::optional<std::pair<std::string, std::string>> splitCredentialPayload(const std::string &payload)
+    {
+        const size_t separator = payload.find('\n');
+        if (separator == std::string::npos)
+            return std::nullopt;
+        return std::pair<std::string, std::string>{
+            payload.substr(0, separator),
+            payload.substr(separator + 1)};
+    }
+
+#ifdef _WIN32
+    std::string hexEncode(const std::string &value)
+    {
+        static constexpr char digits[] = "0123456789abcdef";
+        std::string encoded;
+        encoded.reserve(value.size() * 2);
+        for (const unsigned char byte : value)
+        {
+            encoded.push_back(digits[(byte >> 4) & 0x0F]);
+            encoded.push_back(digits[byte & 0x0F]);
+        }
+        return encoded;
+    }
+
+    std::optional<std::string> hexDecode(const std::string &value)
+    {
+        if (value.size() % 2 != 0)
+            return std::nullopt;
+        auto decode_nibble = [](char character) -> int
+        {
+            if (character >= '0' && character <= '9')
+                return character - '0';
+            if (character >= 'a' && character <= 'f')
+                return 10 + (character - 'a');
+            if (character >= 'A' && character <= 'F')
+                return 10 + (character - 'A');
+            return -1;
+        };
+        std::string decoded;
+        decoded.reserve(value.size() / 2);
+        for (size_t index = 0; index < value.size(); index += 2)
+        {
+            const int high = decode_nibble(value[index]);
+            const int low = decode_nibble(value[index + 1]);
+            if (high < 0 || low < 0)
+                return std::nullopt;
+            decoded.push_back(static_cast<char>((high << 4) | low));
+        }
+        return decoded;
+    }
+
+    std::optional<std::string> protectCredentialString(const std::string &value)
+    {
+        DATA_BLOB input{};
+        input.pbData = reinterpret_cast<BYTE *>(const_cast<char *>(value.data()));
+        input.cbData = static_cast<DWORD>(value.size());
+        DATA_BLOB output{};
+        if (!CryptProtectData(&input, L"Gitree Git Credential", nullptr, nullptr, nullptr,
+                              CRYPTPROTECT_UI_FORBIDDEN, &output))
+            return std::nullopt;
+        std::string protected_value(reinterpret_cast<const char *>(output.pbData), output.cbData);
+        LocalFree(output.pbData);
+        return hexEncode(protected_value);
+    }
+
+    std::optional<std::string> unprotectCredentialString(const std::string &value)
+    {
+        const auto binary = hexDecode(value);
+        if (!binary)
+            return std::nullopt;
+        DATA_BLOB input{};
+        input.pbData = reinterpret_cast<BYTE *>(const_cast<char *>(binary->data()));
+        input.cbData = static_cast<DWORD>(binary->size());
+        DATA_BLOB output{};
+        if (!CryptUnprotectData(&input, nullptr, nullptr, nullptr, nullptr,
+                                CRYPTPROTECT_UI_FORBIDDEN, &output))
+            return std::nullopt;
+        std::string plain(reinterpret_cast<const char *>(output.pbData), output.cbData);
+        LocalFree(output.pbData);
+        return plain;
+    }
+#endif
+
+    std::string normalizePath(const std::string &path)
+    {
+        if (path.empty())
+            return {};
+        try
+        {
+            std::filesystem::path p(path);
+            std::string result = p.lexically_normal().generic_string();
+            if (result.size() > 1 && result.back() == '/')
+                result.pop_back();
+            return result;
+        }
+        catch (...)
+        {
+            return path;
+        }
+    }
+
+    std::optional<float> readFloat(const ikv::Value &value)
+    {
+        if (value.isDouble())
+            return static_cast<float>(value.asDouble());
+        if (value.isInt())
+            return static_cast<float>(value.asInt64());
+        return std::nullopt;
+    }
+
+    // Load settings from an ikv::Value "settings" object into UserData fields.
+    // Returns true if anything useful was read.
+    void loadSettings(const ikv::Value &settings, float &sidebar_width, float &details_width,
+                      bool &sidebar_collapsed, float &commit_message_height,
+                      float &working_composer_height, int &pull_mode, int &zoom_percent,
+                      std::array<float, 4> &sidebar_section_heights,
+                      std::array<bool, 4> &sidebar_section_open,
+                      std::array<float, 4> &commit_table_column_widths)
+    {
+        if (settings.isMember("sidebar_width"))
+            if (const auto value = readFloat(settings["sidebar_width"]); value)
+                sidebar_width = *value;
+        if (settings.isMember("details_width"))
+            if (const auto value = readFloat(settings["details_width"]); value)
+                details_width = *value;
+        if (settings.isMember("sidebar_collapsed") && settings["sidebar_collapsed"].isBool())
+            sidebar_collapsed = settings["sidebar_collapsed"].asBool();
+        if (settings.isMember("commit_message_height"))
+            if (const auto value = readFloat(settings["commit_message_height"]); value)
+                commit_message_height = *value;
+        if (settings.isMember("working_composer_height"))
+            if (const auto value = readFloat(settings["working_composer_height"]); value)
+                working_composer_height = *value;
+        if (settings.isMember("pull_mode") && settings["pull_mode"].isInt())
+            pull_mode = static_cast<int>(settings["pull_mode"].asInt64());
+        if (settings.isMember("zoom_percent") && settings["zoom_percent"].isInt())
+            zoom_percent = static_cast<int>(settings["zoom_percent"].asInt64());
+
+        if (settings.isMember("sidebar_sections") && settings["sidebar_sections"].isArray())
+        {
+            const ikv::Value &arr = settings["sidebar_sections"];
+            const auto count = std::min(arr.size(), sidebar_section_heights.size());
+            for (std::size_t i = 0; i < count; ++i)
+                if (const auto value = readFloat(arr[static_cast<ArrayIndex>(i)]); value)
+                    sidebar_section_heights[i] = *value;
+        }
+        if (settings.isMember("sidebar_section_open") && settings["sidebar_section_open"].isArray())
+        {
+            const ikv::Value &arr = settings["sidebar_section_open"];
+            const auto count = std::min(arr.size(), sidebar_section_open.size());
+            for (std::size_t i = 0; i < count; ++i)
+                sidebar_section_open[i] = arr[static_cast<ArrayIndex>(i)].asBool();
+        }
+        if (settings.isMember("commit_table_columns") && settings["commit_table_columns"].isArray())
+        {
+            const ikv::Value &arr = settings["commit_table_columns"];
+            const auto count = std::min(arr.size(), commit_table_column_widths.size());
+            for (std::size_t i = 0; i < count; ++i)
+                if (const auto value = readFloat(arr[static_cast<ArrayIndex>(i)]); value)
+                    commit_table_column_widths[i] = *value;
+        }
+    }
+} // namespace
+
+UserData::UserData()
+{
     directory_ = roaming_directory() / "Identity" / "Gitree";
     std::filesystem::create_directories(directory_);
-    imgui_ini_path_ = (directory_ / "imgui.ini").string();
     load();
 }
 
-UserData::~UserData() {
+UserData::~UserData()
+{
     save();
 }
 
-void UserData::load() {
-    const std::filesystem::path data_path = directory_ / "user_data.ikv";
-    if (ikv_node_t* root = ikv_parse_file(data_path.string().c_str())) {
-        if (const ikv_node_t* settings = object_value(root, "settings", IKV_OBJECT)) {
-            if (const ikv_node_t* value = object_value(settings, "sidebar_width", IKV_FLOAT))
-                sidebar_width_ = static_cast<float>(ikv_as_float(value));
-            if (const ikv_node_t* value = object_value(settings, "details_width", IKV_FLOAT))
-                details_width_ = static_cast<float>(ikv_as_float(value));
-            if (const ikv_node_t* value = object_value(settings, "pull_mode", IKV_INT))
-                pull_mode_ = static_cast<int>(ikv_as_int(value));
-            if (const ikv_node_t* heights = object_value(settings, "sidebar_sections", IKV_ARRAY)) {
-                const uint32_t count = std::min<uint32_t>(
-                    ikv_array_size(heights), static_cast<uint32_t>(sidebar_section_heights_.size()));
-                for (uint32_t index = 0; index < count; ++index)
-                    sidebar_section_heights_[index] = static_cast<float>(ikv_as_float(ikv_array_get(heights, index)));
+std::string UserData::credentialScope(const std::string &remote_url)
+{
+    const size_t scheme = remote_url.find("://");
+    if (scheme == std::string::npos)
+        return remote_url;
+    const size_t authority_begin = scheme + 3;
+    const size_t authority_end = remote_url.find_first_of("/?#", authority_begin);
+    return remote_url.substr(0, authority_end == std::string::npos ? remote_url.size() : authority_end);
+}
+
+std::filesystem::path UserData::dataPath() const
+{
+    return directory_ / "user_data.ikv";
+}
+
+void UserData::removeLegacyFiles() const
+{
+    std::error_code error;
+    for (const char *name : {"imgui.ini", "settings.ini", "history.txt", "session.txt",
+                              "user_data.ikv2b", "user_data.ikv2"})
+        std::filesystem::remove(directory_ / name, error);
+}
+
+UserData::RepoSettings &UserData::repoSettings(const std::string &normalized_path)
+{
+    return repo_settings_[normalized_path];
+}
+
+const UserData::RepoSettings *UserData::findRepoSettings(const std::string &normalized_path) const
+{
+    const auto it = repo_settings_.find(normalized_path);
+    return it != repo_settings_.end() ? &it->second : nullptr;
+}
+
+void UserData::load()
+{
+    const std::filesystem::path binary_path = dataPath();
+
+    // ── Primary load: iKvxx binary (.ikv) ────────────────────────────────────
+    try
+    {
+        const ikv::Value root = [&]() -> ikv::Value
+        {
+            try
+            {
+                return ikv::Value::load(binary_path.string());
             }
-        }
-        if (const ikv_node_t* history = object_value(root, "recently_closed", IKV_ARRAY)) {
-            const uint32_t count = std::min<uint32_t>(ikv_array_size(history), 12);
-            for (uint32_t index = 0; index < count; ++index) {
-                const char* path = ikv_as_string(ikv_array_get(history, index));
-                if (path && *path) recently_closed_.emplace_back(path);
+            catch (const ikv::Error &)
+            {
+                return ikv::Value::loadBinary(binary_path.string());
             }
+        }();
+
+        if (root.isMember("settings") && root["settings"].isObject())
+        {
+            loadSettings(root["settings"],
+                sidebar_width_, details_width_, sidebar_collapsed_,
+                commit_message_height_, working_composer_height_,
+                pull_mode_, zoom_percent_,
+                sidebar_section_heights_, sidebar_section_open_,
+                commit_table_column_widths_);
         }
-        if (const ikv_node_t* session = object_value(root, "session", IKV_OBJECT)) {
-            if (const ikv_node_t* active = object_value(session, "active_tab", IKV_INT))
-                active_repository_ = static_cast<size_t>(std::max<int64_t>(0, ikv_as_int(active)));
-            if (const ikv_node_t* tabs = object_value(session, "tabs", IKV_ARRAY)) {
-                for (uint32_t index = 0; index < ikv_array_size(tabs); ++index) {
-                    const char* path = ikv_as_string(ikv_array_get(tabs, index));
-                    open_repositories_.emplace_back(path ? path : "");
+
+        if (root.isMember("recently_closed") && root["recently_closed"].isArray())
+        {
+            const ikv::Value &arr = root["recently_closed"];
+            const auto count = std::min<std::size_t>(arr.size(), 100);
+            for (std::size_t i = 0; i < count; ++i)
+            {
+                const std::string path = arr[static_cast<ArrayIndex>(i)].asString();
+                if (!path.empty())
+                {
+                    std::string normalized = normalizePath(path);
+                    if (std::find(recently_closed_.begin(), recently_closed_.end(), normalized) == recently_closed_.end())
+                        recently_closed_.emplace_back(std::move(normalized));
                 }
             }
         }
-        ikv_free(root);
-        sidebar_width_ = std::clamp(sidebar_width_, 180.0f, 520.0f);
-        details_width_ = std::clamp(details_width_, 280.0f, 650.0f);
-        pull_mode_ = std::clamp(pull_mode_, 0, 3);
-        for (float& height : sidebar_section_heights_) height = std::clamp(height, 42.0f, 500.0f);
-        if (open_repositories_.empty()) active_repository_ = 0;
-        else active_repository_ = std::min(active_repository_, open_repositories_.size() - 1);
+
+        if (root.isMember("recent_repositories") && root["recent_repositories"].isArray())
+        {
+            const ikv::Value &arr = root["recent_repositories"];
+            const auto count = std::min<std::size_t>(arr.size(), 100);
+            for (std::size_t i = 0; i < count; ++i)
+            {
+                const std::string path = arr[static_cast<ArrayIndex>(i)].asString();
+                if (!path.empty())
+                {
+                    std::string normalized = normalizePath(path);
+                    if (std::find(recent_repositories_.begin(), recent_repositories_.end(), normalized) == recent_repositories_.end())
+                        recent_repositories_.emplace_back(std::move(normalized));
+                }
+            }
+        }
+
+        if (root.isMember("session") && root["session"].isObject())
+        {
+            const ikv::Value &session = root["session"];
+            if (session.isMember("active_tab") && session["active_tab"].isInt())
+                active_repository_ = static_cast<size_t>(std::max<int64_t>(0, session["active_tab"].asInt64()));
+            if (session.isMember("tabs") && session["tabs"].isArray())
+            {
+                const ikv::Value &tabs = session["tabs"];
+                for (std::size_t i = 0; i < tabs.size(); ++i)
+                    open_repositories_.emplace_back(tabs[static_cast<ArrayIndex>(i)].asString());
+            }
+        }
+
+        if (root.isMember("repository_settings") && root["repository_settings"].isArray())
+        {
+            const ikv::Value &repos = root["repository_settings"];
+            for (std::size_t i = 0; i < repos.size(); ++i)
+            {
+                const ikv::Value &entry = repos[static_cast<ArrayIndex>(i)];
+                if (!entry.isObject() || !entry.isMember("path"))
+                    continue;
+                const std::string path_str = entry["path"].asString();
+                if (path_str.empty())
+                    continue;
+                const std::string key = normalizePath(path_str);
+                RepoSettings &rs = repo_settings_[key];
+                // column widths
+                rs.column_widths = commit_table_column_widths_; // start from global default
+                if (entry.isMember("commit_table_columns") && entry["commit_table_columns"].isArray())
+                {
+                    const ikv::Value &widths = entry["commit_table_columns"];
+                    const auto count = std::min<std::size_t>(widths.size(), 4);
+                    for (std::size_t c = 0; c < count; ++c)
+                        rs.column_widths[c] = static_cast<float>(widths[static_cast<ArrayIndex>(c)].asDouble());
+                }
+                if (entry.isMember("commit_summary") && entry["commit_summary"].isString())
+                    rs.pending_commit_summary = entry["commit_summary"].asString();
+                if (entry.isMember("commit_description") && entry["commit_description"].isString())
+                    rs.pending_commit_description = entry["commit_description"].asString();
+            }
+        }
+
+        if (root.isMember("credentials") && root["credentials"].isArray())
+        {
+            const ikv::Value &creds = root["credentials"];
+            for (std::size_t i = 0; i < creds.size(); ++i)
+            {
+                const ikv::Value &entry = creds[static_cast<ArrayIndex>(i)];
+                if (!entry.isObject())
+                    continue;
+                if (!entry.isMember("scope") || !entry.isMember("secret"))
+                    continue;
+                const std::string scope = entry["scope"].asString();
+                const std::string secret = entry["secret"].asString();
+                if (!scope.empty() && !secret.empty())
+                    encrypted_credentials_[scope] = secret;
+            }
+        }
+
+        // Clamp loaded values.
+        sidebar_width_           = std::clamp(sidebar_width_, 180.0f, 520.0f);
+        details_width_           = std::clamp(details_width_, 280.0f, 650.0f);
+        pull_mode_               = std::clamp(pull_mode_, 0, 3);
+        zoom_percent_            = std::clamp(zoom_percent_, 80, 200);
+        commit_message_height_   = std::clamp(commit_message_height_, 60.0f, 600.0f);
+        working_composer_height_ = std::clamp(working_composer_height_, 100.0f, 900.0f);
+        for (float &h : sidebar_section_heights_)
+            h = std::clamp(h, 42.0f, 500.0f);
+        for (float &w : commit_table_column_widths_)
+            w = std::clamp(w, 0.0f, 1200.0f);
+        for (auto &[repo_key, rs] : repo_settings_)
+            for (float &w : rs.column_widths)
+                w = std::clamp(w, 0.0f, 1200.0f);
+        if (open_repositories_.empty())
+            active_repository_ = 0;
+        else
+            active_repository_ = std::min(active_repository_, open_repositories_.size() - 1);
         return;
     }
+    catch (const ikv::Error &)
+    {
+        // File missing or corrupt — try legacy paths below.
+    }
 
-    // Import the original files once when upgrading an existing installation.
+    // ── Legacy text load (user_data.ikv — old text format) ───────────────────
+    // (The old binary was user_data.ikv2b; user_data.ikv was the text file.)
+    // We'll silently skip if missing.
+    const std::filesystem::path text_path = directory_ / "user_data_legacy.ikv";
+    // (No legacy text migration needed — just fall through to defaults.)
+
+    // ── Import from very old settings.ini ────────────────────────────────────
     std::ifstream settings(directory_ / "settings.ini");
     std::string key;
-    while (settings >> key) {
-        if (key == "sidebar_width") settings >> sidebar_width_;
-        else if (key == "details_width") settings >> details_width_;
-        else if (key == "pull_mode") settings >> pull_mode_;
-        else if (key.rfind("sidebar_section_", 0) == 0) {
+    while (settings >> key)
+    {
+        if (key == "sidebar_width")        settings >> sidebar_width_;
+        else if (key == "details_width")   settings >> details_width_;
+        else if (key == "pull_mode")       settings >> pull_mode_;
+        else if (key == "zoom_percent")    settings >> zoom_percent_;
+        else if (key.rfind("sidebar_section_", 0) == 0)
+        {
             const size_t index = static_cast<size_t>(std::stoul(key.substr(16)));
             float height = 0.0f;
             settings >> height;
-            if (index < sidebar_section_heights_.size()) sidebar_section_heights_[index] = height;
+            if (index < sidebar_section_heights_.size())
+                sidebar_section_heights_[index] = height;
         }
     }
-    sidebar_width_ = std::clamp(sidebar_width_, 180.0f, 520.0f);
-    details_width_ = std::clamp(details_width_, 280.0f, 650.0f);
-    pull_mode_ = std::clamp(pull_mode_, 0, 3);
-    for (float& height : sidebar_section_heights_) height = std::clamp(height, 42.0f, 500.0f);
 
     std::ifstream history(directory_ / "history.txt");
     std::string path;
-    while (history >> std::quoted(path)) {
-        if (!path.empty()) recently_closed_.push_back(path);
-        if (recently_closed_.size() == 12) break;
+    while (history >> std::quoted(path))
+    {
+        if (!path.empty())
+        {
+            std::string normalized = normalizePath(path);
+            if (std::find(recently_closed_.begin(), recently_closed_.end(), normalized) == recently_closed_.end())
+                recently_closed_.push_back(std::move(normalized));
+        }
+        if (recently_closed_.size() == 100)
+            break;
+    }
+    recent_repositories_ = recently_closed_;
+
+    std::ifstream session_file(directory_ / "session.txt");
+    session_file >> active_repository_;
+    while (session_file >> std::quoted(path))
+    {
+        if (!path.empty())
+            open_repositories_.push_back(normalizePath(path));
     }
 
-    std::ifstream session(directory_ / "session.txt");
-    session >> active_repository_;
-    while (session >> std::quoted(path)) open_repositories_.push_back(path);
-    if (open_repositories_.empty()) active_repository_ = 0;
-    else active_repository_ = std::min(active_repository_, open_repositories_.size() - 1);
+    sidebar_width_  = std::clamp(sidebar_width_, 180.0f, 520.0f);
+    details_width_  = std::clamp(details_width_, 280.0f, 650.0f);
+    pull_mode_      = std::clamp(pull_mode_, 0, 3);
+    zoom_percent_   = std::clamp(zoom_percent_, 80, 200);
+    for (float &h : sidebar_section_heights_)
+        h = std::clamp(h, 42.0f, 500.0f);
+    if (open_repositories_.empty())
+        active_repository_ = 0;
+    else
+        active_repository_ = std::min(active_repository_, open_repositories_.size() - 1);
+    save(); // migrate to new format immediately
 }
 
-void UserData::addRecentlyClosed(const std::string& path) {
+std::optional<SavedGitCredential> UserData::remoteCredential(const std::string &remote_url) const
+{
+    const auto iterator = encrypted_credentials_.find(credentialScope(remote_url));
+    if (iterator == encrypted_credentials_.end())
+        return std::nullopt;
+#ifdef _WIN32
+    const auto plain = unprotectCredentialString(iterator->second);
+    if (!plain)
+        return std::nullopt;
+    const auto split = splitCredentialPayload(*plain);
+    if (!split)
+        return std::nullopt;
+    return SavedGitCredential{remote_url, split->first, split->second};
+#else
+    return std::nullopt;
+#endif
+}
+
+std::string UserData::pendingCommitSummary(const std::string &repo_path) const
+{
+    const std::string key = normalizePath(repo_path);
+    const RepoSettings *rs = findRepoSettings(key);
+    return rs ? rs->pending_commit_summary : std::string{};
+}
+
+std::string UserData::pendingCommitDescription(const std::string &repo_path) const
+{
+    const std::string key = normalizePath(repo_path);
+    const RepoSettings *rs = findRepoSettings(key);
+    return rs ? rs->pending_commit_description : std::string{};
+}
+
+void UserData::addRecentRepository(const std::string &path)
+{
     if (path.empty()) return;
-    std::erase(recently_closed_, path);
-    recently_closed_.insert(recently_closed_.begin(), path);
-    if (recently_closed_.size() > 12) recently_closed_.resize(12);
+    const std::string normalized = normalizePath(path);
+    std::erase(recent_repositories_, normalized);
+    recent_repositories_.insert(recent_repositories_.begin(), normalized);
+    if (recent_repositories_.size() > 100)
+        recent_repositories_.resize(100);
     save();
 }
 
-void UserData::setRepositorySession(std::vector<std::string> paths, size_t active_repository) {
+void UserData::addRecentlyClosed(const std::string &path)
+{
+    if (path.empty()) return;
+    const std::string normalized = normalizePath(path);
+    std::erase(recent_repositories_, normalized);
+    recent_repositories_.insert(recent_repositories_.begin(), normalized);
+    if (recent_repositories_.size() > 100)
+        recent_repositories_.resize(100);
+    std::erase(recently_closed_, normalized);
+    recently_closed_.insert(recently_closed_.begin(), normalized);
+    if (recently_closed_.size() > 100)
+        recently_closed_.resize(100);
+    save();
+}
+
+std::string UserData::takeRecentlyClosed()
+{
+    if (recently_closed_.empty()) return {};
+    std::string path = std::move(recently_closed_.front());
+    recently_closed_.erase(recently_closed_.begin());
+    save();
+    return path;
+}
+
+void UserData::setRepositorySession(std::vector<std::string> paths, size_t active_repository)
+{
+    for (auto &path : paths)
+        path = normalizePath(path);
     open_repositories_ = std::move(paths);
     active_repository_ = open_repositories_.empty()
-        ? 0
-        : std::min(active_repository, open_repositories_.size() - 1);
+                             ? 0
+                             : std::min(active_repository, open_repositories_.size() - 1);
     save();
 }
 
-void UserData::save() const {
-    std::filesystem::create_directories(directory_);
-    ikv_node_t* root = ikv_create_object("gitree");
-    if (!root) return;
-
-    ikv_node_t* settings = ikv_object_add_object(root, "settings");
-    ikv_object_set_float(settings, "sidebar_width", sidebar_width_);
-    ikv_object_set_float(settings, "details_width", details_width_);
-    ikv_object_set_int(settings, "pull_mode", pull_mode_);
-    ikv_node_t* heights = ikv_object_add_array(settings, "sidebar_sections", IKV_FLOAT);
-    for (const float height : sidebar_section_heights_) ikv_array_add_float(heights, height);
-
-    ikv_node_t* history = ikv_object_add_array(root, "recently_closed", IKV_STRING);
-    for (const auto& path : recently_closed_) ikv_array_add_string(history, path.c_str());
-
-    ikv_node_t* session = ikv_object_add_object(root, "session");
-    ikv_object_set_int(session, "active_tab", static_cast<int64_t>(active_repository_));
-    ikv_node_t* tabs = ikv_object_add_array(session, "tabs", IKV_STRING);
-    for (const auto& path : open_repositories_) ikv_array_add_string(tabs, path.c_str());
-
-    ikv_write_file((directory_ / "user_data.ikv").string().c_str(), root);
-    ikv_free(root);
+void UserData::storeRemoteCredential(const std::string &remote_url, const std::string &username,
+                                     const std::string &password)
+{
+    const std::string scope = credentialScope(remote_url);
+    if (scope.empty() || username.empty()) return;
+#ifdef _WIN32
+    const auto protected_value = protectCredentialString(username + "\n" + password);
+    if (!protected_value) return;
+    encrypted_credentials_[scope] = *protected_value;
+    save();
+#else
+    (void)password;
+#endif
+}
+
+void UserData::clearRemoteCredential(const std::string &remote_url)
+{
+    encrypted_credentials_.erase(credentialScope(remote_url));
+    save();
+}
+
+void UserData::setPendingCommitSummary(const std::string &repo_path, const std::string &text)
+{
+    repoSettings(normalizePath(repo_path)).pending_commit_summary = text;
+    // Don't trigger a full save on every keystroke — caller must call save() when appropriate.
+}
+
+void UserData::setPendingCommitDescription(const std::string &repo_path, const std::string &text)
+{
+    repoSettings(normalizePath(repo_path)).pending_commit_description = text;
+}
+
+void UserData::save() const
+{
+    std::filesystem::create_directories(directory_);
+    ikv::Value root(ikv::objectValue, "gitree");
+
+    auto settings = root.makeObject("settings");
+    settings["sidebar_width"] = static_cast<double>(sidebar_width_);
+    settings["details_width"] = static_cast<double>(details_width_);
+    settings["sidebar_collapsed"] = sidebar_collapsed_;
+    settings["commit_message_height"] = static_cast<double>(commit_message_height_);
+    settings["working_composer_height"] = static_cast<double>(working_composer_height_);
+    settings["pull_mode"] = static_cast<int64_t>(pull_mode_);
+    settings["zoom_percent"] = static_cast<int64_t>(zoom_percent_);
+
+    auto heights = settings.makeArray("sidebar_sections", ikv::realValue);
+    for (const float h : sidebar_section_heights_)
+        heights.append(static_cast<double>(h));
+
+    auto open = settings.makeArray("sidebar_section_open", ikv::booleanValue);
+    for (const bool b : sidebar_section_open_)
+        open.append(b);
+
+    auto col_widths = settings.makeArray("commit_table_columns", ikv::realValue);
+    for (const float w : commit_table_column_widths_)
+        col_widths.append(static_cast<double>(w));
+
+    auto repos = root.makeArray("repository_settings", ikv::objectValue);
+    for (const auto &[repo_path, rs] : repo_settings_)
+    {
+        auto entry = repos.appendObject();
+        entry["path"] = repo_path;
+        auto rw = entry.makeArray("commit_table_columns", ikv::realValue);
+        for (const float w : rs.column_widths)
+            rw.append(static_cast<double>(w));
+        if (!rs.pending_commit_summary.empty())
+            entry["commit_summary"] = rs.pending_commit_summary;
+        if (!rs.pending_commit_description.empty())
+            entry["commit_description"] = rs.pending_commit_description;
+    }
+
+    auto history = root.makeArray("recently_closed", ikv::stringValue);
+    for (const auto &p : recently_closed_)
+        history.append(p);
+
+    auto recent = root.makeArray("recent_repositories", ikv::stringValue);
+    for (const auto &p : recent_repositories_)
+        recent.append(p);
+
+    auto session = root.makeObject("session");
+    session["active_tab"] = static_cast<int64_t>(active_repository_);
+    auto tabs = session.makeArray("tabs", ikv::stringValue);
+    for (const auto &p : open_repositories_)
+        tabs.append(p);
+
+    auto credentials = root.makeArray("credentials", ikv::objectValue);
+    for (const auto &[scope, secret] : encrypted_credentials_)
+    {
+        auto entry = credentials.appendObject();
+        entry["scope"] = scope;
+        entry["secret"] = secret;
+    }
+
+    root.writeBinary(dataPath().string(), ikv::Version::v2);
+    removeLegacyFiles();
+}
+
+float UserData::commitTableColumnWidth(const std::string &repo_path, size_t index) const
+{
+    if (index >= 4) return 0.0f;
+    const std::string normalized = normalizePath(repo_path);
+    const RepoSettings *rs = findRepoSettings(normalized);
+    if (rs) return rs->column_widths[index];
+    return commit_table_column_widths_[index];
+}
+
+void UserData::setCommitTableColumnWidth(const std::string &repo_path, size_t index, float width)
+{
+    if (index >= 4) return;
+    const std::string normalized = normalizePath(repo_path);
+    RepoSettings &rs = repo_settings_[normalized];
+    // Initialise from global defaults if this is a brand-new entry.
+    if (rs.column_widths[0] == 0.0f && rs.column_widths[1] == 0.0f &&
+        rs.column_widths[2] == 0.0f && rs.column_widths[3] == 0.0f)
+    {
+        rs.column_widths = commit_table_column_widths_;
+    }
+    rs.column_widths[index] = width;
+    save();
 }

src/managers/user_data.h

@@ -2,42 +2,102 @@
 
 #include <array>
 #include <filesystem>
+#include <optional>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
-class UserData {
+struct SavedGitCredential
+{
+    std::string remote_url;
+    std::string username;
+    std::string password;
+};
+
+class UserData
+{
 public:
     UserData();
     ~UserData();
 
-    [[nodiscard]] const std::filesystem::path& directory() const { return directory_; }
-    [[nodiscard]] const std::string& imguiIniPath() const { return imgui_ini_path_; }
-    [[nodiscard]] const std::vector<std::string>& recentlyClosed() const { return recently_closed_; }
-    [[nodiscard]] const std::vector<std::string>& openRepositories() const { return open_repositories_; }
+    [[nodiscard]] const std::filesystem::path &directory() const { return directory_; }
+    [[nodiscard]] const std::vector<std::string> &recentRepositories() const { return recent_repositories_; }
+    [[nodiscard]] const std::vector<std::string> &recentlyClosed() const { return recently_closed_; }
+    [[nodiscard]] const std::vector<std::string> &openRepositories() const { return open_repositories_; }
     [[nodiscard]] size_t activeRepository() const { return active_repository_; }
     [[nodiscard]] float sidebarWidth() const { return sidebar_width_; }
     [[nodiscard]] float detailsWidth() const { return details_width_; }
     [[nodiscard]] float sidebarSectionHeight(size_t index) const { return sidebar_section_heights_.at(index); }
+    [[nodiscard]] bool sidebarCollapsed() const { return sidebar_collapsed_; }
+    [[nodiscard]] bool sidebarSectionOpen(size_t index) const { return sidebar_section_open_.at(index); }
+    [[nodiscard]] float commitMessageHeight() const { return commit_message_height_; }
+    [[nodiscard]] float workingComposerHeight() const { return working_composer_height_; }
+    [[nodiscard]] float commitTableColumnWidth(const std::string &repo_path, size_t index) const;
     [[nodiscard]] int pullMode() const { return pull_mode_; }
+    [[nodiscard]] int zoomPercent() const { return zoom_percent_; }
+    [[nodiscard]] std::optional<SavedGitCredential> remoteCredential(const std::string &remote_url) const;
+    [[nodiscard]] std::string pendingCommitSummary(const std::string &repo_path) const;
+    [[nodiscard]] std::string pendingCommitDescription(const std::string &repo_path) const;
+    static std::string credentialScope(const std::string &remote_url);
 
     void setSidebarWidth(float width) { sidebar_width_ = width; }
     void setDetailsWidth(float width) { details_width_ = width; }
     void setSidebarSectionHeight(size_t index, float height) { sidebar_section_heights_.at(index) = height; }
-    void setPullMode(int mode) { pull_mode_ = mode; save(); }
-    void addRecentlyClosed(const std::string& path);
+    void setSidebarCollapsed(bool collapsed) { sidebar_collapsed_ = collapsed; }
+    void setSidebarSectionOpen(size_t index, bool open) { sidebar_section_open_.at(index) = open; }
+    void setCommitMessageHeight(float height) { commit_message_height_ = height; }
+    void setWorkingComposerHeight(float height) { working_composer_height_ = height; }
+    void setCommitTableColumnWidth(const std::string &repo_path, size_t index, float width);
+    void setPendingCommitSummary(const std::string &repo_path, const std::string &text);
+    void setPendingCommitDescription(const std::string &repo_path, const std::string &text);
+    void setPullMode(int mode)
+    {
+        pull_mode_ = mode;
+        save();
+    }
+    void setZoomPercent(int percent)
+    {
+        zoom_percent_ = percent;
+        save();
+    }
+    void addRecentRepository(const std::string &path);
+    void addRecentlyClosed(const std::string &path);
+    std::string takeRecentlyClosed();
     void setRepositorySession(std::vector<std::string> paths, size_t active_repository);
+    void storeRemoteCredential(const std::string &remote_url, const std::string &username,
+                               const std::string &password);
+    void clearRemoteCredential(const std::string &remote_url);
     void save() const;
 
 private:
+    struct RepoSettings
+    {
+        std::array<float, 4> column_widths = {0.0f, 0.0f, 0.0f, 0.0f};
+        std::string pending_commit_summary;
+        std::string pending_commit_description;
+    };
+
     void load();
+    [[nodiscard]] std::filesystem::path dataPath() const;
+    void removeLegacyFiles() const;
+    RepoSettings &repoSettings(const std::string &normalized_path);
+    const RepoSettings *findRepoSettings(const std::string &normalized_path) const;
 
     std::filesystem::path directory_;
-    std::string imgui_ini_path_;
+    std::vector<std::string> recent_repositories_;
     std::vector<std::string> recently_closed_;
     std::vector<std::string> open_repositories_;
     size_t active_repository_ = 0;
     float sidebar_width_ = 230.0f;
     float details_width_ = 368.0f;
     std::array<float, 4> sidebar_section_heights_ = {110.0f, 220.0f, 90.0f, 150.0f};
+    bool sidebar_collapsed_ = false;
+    std::array<bool, 4> sidebar_section_open_ = {true, true, true, true};
+    float commit_message_height_ = 125.0f;
+    float working_composer_height_ = 320.0f;
+    std::array<float, 4> commit_table_column_widths_ = {0.0f, 0.0f, 0.0f, 0.0f};
     int pull_mode_ = 1;
+    int zoom_percent_ = 100;
+    std::unordered_map<std::string, RepoSettings> repo_settings_;
+    std::unordered_map<std::string, std::string> encrypted_credentials_;
 };

src/managers/window_manager.cpp

@@ -2,36 +2,155 @@
 
 #include <GLFW/glfw3.h>
 #include <algorithm>
+#include <cmath>
 #include <cstring>
+#include <filesystem>
+#include <vector>
 
 #ifdef _WIN32
 #define GLFW_EXPOSE_NATIVE_WIN32
 #include <GLFW/glfw3native.h>
 #include <dwmapi.h>
 #include <windows.h>
+#include <wincodec.h>
 #endif
 
-WindowManager::~WindowManager() {
+#ifdef _WIN32
+namespace
+{
+    HICON loadPngIcon(const std::filesystem::path &path, UINT size, bool rounded)
+    {
+        const HRESULT com_result = CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
+        const bool uninitialize_com = SUCCEEDED(com_result);
+
+        IWICImagingFactory *factory = nullptr;
+        IWICBitmapDecoder *decoder = nullptr;
+        IWICBitmapFrameDecode *frame = nullptr;
+        IWICBitmapScaler *scaler = nullptr;
+        IWICFormatConverter *converter = nullptr;
+        HICON icon = nullptr;
+
+        if (FAILED(CoCreateInstance(CLSID_WICImagingFactory, nullptr, CLSCTX_INPROC_SERVER,
+                                    IID_PPV_ARGS(&factory))) ||
+            FAILED(factory->CreateDecoderFromFilename(path.c_str(), nullptr, GENERIC_READ,
+                                                      WICDecodeMetadataCacheOnLoad, &decoder)) ||
+            FAILED(decoder->GetFrame(0, &frame)) ||
+            FAILED(factory->CreateBitmapScaler(&scaler)) ||
+            FAILED(scaler->Initialize(frame, size, size, WICBitmapInterpolationModeFant)) ||
+            FAILED(factory->CreateFormatConverter(&converter)) ||
+            FAILED(converter->Initialize(scaler, GUID_WICPixelFormat32bppBGRA,
+                                         WICBitmapDitherTypeNone, nullptr, 0.0,
+                                         WICBitmapPaletteTypeCustom)))
+        {
+            goto cleanup;
+        }
+
+        {
+            std::vector<BYTE> pixels(static_cast<size_t>(size) * size * 4);
+            if (FAILED(converter->CopyPixels(nullptr, size * 4,
+                                             static_cast<UINT>(pixels.size()), pixels.data())))
+            {
+                goto cleanup;
+            }
+
+            if (rounded)
+            {
+                const float radius = static_cast<float>(size) * 0.22f;
+                const float maximum = static_cast<float>(size) - radius - 0.5f;
+                const float minimum = radius - 0.5f;
+                for (UINT y = 0; y < size; ++y)
+                {
+                    for (UINT x = 0; x < size; ++x)
+                    {
+                        const float nearest_x = std::clamp(static_cast<float>(x), minimum, maximum);
+                        const float nearest_y = std::clamp(static_cast<float>(y), minimum, maximum);
+                        const float dx = static_cast<float>(x) - nearest_x;
+                        const float dy = static_cast<float>(y) - nearest_y;
+                        const float coverage = std::clamp(radius + 0.5f - std::sqrt(dx * dx + dy * dy),
+                                                          0.0f, 1.0f);
+                        pixels[(static_cast<size_t>(y) * size + x) * 4 + 3] =
+                            static_cast<BYTE>(coverage * 255.0f);
+                    }
+                }
+            }
+
+            BITMAPV5HEADER header{};
+            header.bV5Size = sizeof(header);
+            header.bV5Width = static_cast<LONG>(size);
+            header.bV5Height = -static_cast<LONG>(size);
+            header.bV5Planes = 1;
+            header.bV5BitCount = 32;
+            header.bV5Compression = BI_BITFIELDS;
+            header.bV5RedMask = 0x00ff0000;
+            header.bV5GreenMask = 0x0000ff00;
+            header.bV5BlueMask = 0x000000ff;
+            header.bV5AlphaMask = 0xff000000;
+
+            void *bitmap_bits = nullptr;
+            const HDC screen = GetDC(nullptr);
+            const HBITMAP color = CreateDIBSection(screen, reinterpret_cast<BITMAPINFO *>(&header),
+                                                   DIB_RGB_COLORS, &bitmap_bits, nullptr, 0);
+            ReleaseDC(nullptr, screen);
+            const HBITMAP mask = CreateBitmap(size, size, 1, 1, nullptr);
+            if (color && mask && bitmap_bits)
+            {
+                std::memcpy(bitmap_bits, pixels.data(), pixels.size());
+                ICONINFO info{};
+                info.fIcon = TRUE;
+                info.hbmColor = color;
+                info.hbmMask = mask;
+                icon = CreateIconIndirect(&info);
+            }
+            if (color)
+                DeleteObject(color);
+            if (mask)
+                DeleteObject(mask);
+        }
+
+    cleanup:
+        if (converter)
+            converter->Release();
+        if (scaler)
+            scaler->Release();
+        if (frame)
+            frame->Release();
+        if (decoder)
+            decoder->Release();
+        if (factory)
+            factory->Release();
+        if (uninitialize_com)
+            CoUninitialize();
+        return icon;
+    }
+} // namespace
+#endif
+
+WindowManager::~WindowManager()
+{
     destroy();
 }
 
-bool WindowManager::create(const char* title, int width, int height) {
+bool WindowManager::create(const char *title, int width, int height)
+{
 #ifdef _WIN32
-    using SetDpiAwarenessContext = BOOL(WINAPI*)(HANDLE);
+    using SetDpiAwarenessContext = BOOL(WINAPI *)(HANDLE);
     const HMODULE user32 = GetModuleHandleW(L"user32.dll");
     const FARPROC dpi_address = GetProcAddress(user32, "SetProcessDpiAwarenessContext");
     SetDpiAwarenessContext set_dpi_awareness = nullptr;
     static_assert(sizeof(set_dpi_awareness) == sizeof(dpi_address));
     std::memcpy(&set_dpi_awareness, &dpi_address, sizeof(set_dpi_awareness));
-    if (set_dpi_awareness) set_dpi_awareness(reinterpret_cast<HANDLE>(-4)); // Per-monitor v2
+    if (set_dpi_awareness)
+        set_dpi_awareness(reinterpret_cast<HANDLE>(-4)); // Per-monitor v2
 #endif
-    if (!glfwInit()) return false;
+    if (!glfwInit())
+        return false;
     glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
     glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
     glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);
     window_ = glfwCreateWindow(width, height, title, nullptr, nullptr);
-    if (!window_) {
+    if (!window_)
+    {
         glfwTerminate();
         return false;
     }
@@ -45,13 +164,17 @@ bool WindowManager::create(const char* title, int width, int height) {
     glfwGetWindowContentScale(window_, &x_scale, &y_scale);
     dpi_scale_ = std::max(x_scale, y_scale);
     applyNativeCaption();
+    applyNativeIcons();
     return true;
 }
 
-void WindowManager::destroy() {
-    if (!window_) return;
+void WindowManager::destroy()
+{
+    if (!window_)
+        return;
     glfwDestroyWindow(window_);
     window_ = nullptr;
+    destroyNativeIcons();
     glfwTerminate();
 }
 
@@ -60,39 +183,126 @@ void WindowManager::swapBuffers() { glfwSwapBuffers(window_); }
 void WindowManager::requestClose() { glfwSetWindowShouldClose(window_, GLFW_TRUE); }
 bool WindowManager::shouldClose() const { return !window_ || glfwWindowShouldClose(window_); }
 
-bool WindowManager::consumeDpiChange() {
+bool WindowManager::consumeDpiChange()
+{
     const bool changed = dpi_changed_;
     dpi_changed_ = false;
     return changed;
 }
 
-void WindowManager::contentScaleCallback(GLFWwindow* window, float x_scale, float y_scale) {
-    auto* manager = static_cast<WindowManager*>(glfwGetWindowUserPointer(window));
-    if (manager) manager->updateDpi(std::max(x_scale, y_scale));
+void WindowManager::contentScaleCallback(GLFWwindow *window, float x_scale, float y_scale)
+{
+    auto *manager = static_cast<WindowManager *>(glfwGetWindowUserPointer(window));
+    if (manager)
+        manager->updateDpi(std::max(x_scale, y_scale));
 }
 
-void WindowManager::updateDpi(float scale) {
+void WindowManager::updateDpi(float scale)
+{
     scale = std::clamp(scale, 1.0f, 4.0f);
-    if (scale == dpi_scale_) return;
+    if (scale == dpi_scale_)
+        return;
     dpi_scale_ = scale;
     dpi_changed_ = true;
     applyNativeCaption();
 }
 
-void WindowManager::applyNativeCaption() const {
+void WindowManager::applyNativeCaption() const
+{
 #ifdef _WIN32
+    if (!window_)
+        return;
+
     const HWND hwnd = glfwGetWin32Window(window_);
+    if (!hwnd)
+        return;
+
     const BOOL dark = TRUE;
-    DwmSetWindowAttribute(hwnd, 20, &dark, sizeof(dark)); // DWMWA_USE_IMMERSIVE_DARK_MODE
-    const DWORD square_corners = 1; // DWMWCP_DONOTROUND
-    DwmSetWindowAttribute(hwnd, 33, &square_corners, sizeof(square_corners));
+
+    // DWMWA_USE_IMMERSIVE_DARK_MODE
+    DwmSetWindowAttribute(hwnd, 20, &dark, sizeof(dark));
+
+    DWORD corner_pref = 0;
+
+    switch (corner_mode_)
+    {
+    case WindowCornerMode::Default:
+        corner_pref = 0; // DWMWCP_DEFAULT
+        break;
+
+    case WindowCornerMode::DoNotRound:
+        corner_pref = 1; // DWMWCP_DONOTROUND
+        break;
+
+    case WindowCornerMode::Round:
+        corner_pref = 2; // DWMWCP_ROUND
+        break;
+
+    case WindowCornerMode::RoundSmall:
+        corner_pref = 3; // DWMWCP_ROUNDSMALL
+        break;
+    }
+
+    // DWMWA_WINDOW_CORNER_PREFERENCE
+    DwmSetWindowAttribute(hwnd, 33, &corner_pref, sizeof(corner_pref));
 
     // Windows 11 caption customization. Older versions safely ignore these.
-    const COLORREF caption = RGB(32, 32, 32);
+    const COLORREF caption = static_cast<COLORREF>(caption_color_);
     const COLORREF border = RGB(51, 55, 63);
     const COLORREF text = RGB(199, 203, 209);
-    DwmSetWindowAttribute(hwnd, 35, &caption, sizeof(caption)); // DWMWA_CAPTION_COLOR
-    DwmSetWindowAttribute(hwnd, 34, &border, sizeof(border));   // DWMWA_BORDER_COLOR
-    DwmSetWindowAttribute(hwnd, 36, &text, sizeof(text));       // DWMWA_TEXT_COLOR
+
+    // DWMWA_BORDER_COLOR
+    DwmSetWindowAttribute(hwnd, 34, &border, sizeof(border));
+
+    // DWMWA_CAPTION_COLOR
+    DwmSetWindowAttribute(hwnd, 35, &caption, sizeof(caption));
+
+    // DWMWA_TEXT_COLOR
+    DwmSetWindowAttribute(hwnd, 36, &text, sizeof(text));
 #endif
 }
+
+void WindowManager::applyNativeIcons()
+{
+#ifdef _WIN32
+    destroyNativeIcons();
+    const HWND hwnd = glfwGetWin32Window(window_);
+    const auto asset_dir = std::filesystem::path(GITREE_IMAGE_ASSET_DIR);
+    window_icon_ = loadPngIcon(asset_dir / L"gitree_logo.png", 32, true);
+    taskbar_icon_ = loadPngIcon(asset_dir / L"gitree_logo.png", 64, true);
+
+    if (window_icon_)
+    {
+        SendMessageW(hwnd, WM_SETICON, ICON_SMALL, reinterpret_cast<LPARAM>(window_icon_));
+        SendMessageW(hwnd, WM_SETICON, ICON_SMALL2, reinterpret_cast<LPARAM>(window_icon_));
+    }
+    if (taskbar_icon_)
+    {
+        SendMessageW(hwnd, WM_SETICON, ICON_BIG, reinterpret_cast<LPARAM>(taskbar_icon_));
+    }
+#endif
+}
+
+void WindowManager::destroyNativeIcons()
+{
+#ifdef _WIN32
+    if (window_icon_)
+        DestroyIcon(static_cast<HICON>(window_icon_));
+    if (taskbar_icon_)
+        DestroyIcon(static_cast<HICON>(taskbar_icon_));
+#endif
+    window_icon_ = nullptr;
+    taskbar_icon_ = nullptr;
+}
+
+void WindowManager::setCornerMode(WindowCornerMode mode)
+{
+    corner_mode_ = mode;
+    applyNativeCaption();
+}
+
+void WindowManager::setCaptionColor(std::uint32_t color)
+{
+    caption_color_ = color;
+    applyNativeCaption();
+}

src/managers/window_manager.h

@@ -1,31 +1,62 @@
 #pragma once
 
+#include <cstdint>
+
 struct GLFWwindow;
 
-class WindowManager {
+class WindowManager
+{
+public:
+    enum class WindowCornerMode
+    {
+        Default,
+        DoNotRound,
+        Round,
+        RoundSmall
+    };
+
 public:
     WindowManager() = default;
     ~WindowManager();
 
-    WindowManager(const WindowManager&) = delete;
-    WindowManager& operator=(const WindowManager&) = delete;
+    WindowManager(const WindowManager &) = delete;
+    WindowManager &operator=(const WindowManager &) = delete;
 
-    bool create(const char* title, int width, int height);
+    bool create(const char *title, int width, int height);
     void destroy();
     void pollEvents();
     void swapBuffers();
     void requestClose();
+
     [[nodiscard]] bool shouldClose() const;
-    [[nodiscard]] GLFWwindow* nativeWindow() const { return window_; }
+    [[nodiscard]] GLFWwindow *nativeWindow() const { return window_; }
     [[nodiscard]] float dpiScale() const { return dpi_scale_; }
+
     bool consumeDpiChange();
 
+    void setCornerMode(WindowCornerMode mode);
+    [[nodiscard]] WindowCornerMode cornerMode() const { return corner_mode_; }
+
+    void setCaptionColor(std::uint32_t color);
+    [[nodiscard]] std::uint32_t captionColor() const { return caption_color_; }
+
 private:
-    static void contentScaleCallback(GLFWwindow* window, float x_scale, float y_scale);
+    static void contentScaleCallback(GLFWwindow *window, float x_scale, float y_scale);
+
     void updateDpi(float scale);
     void applyNativeCaption() const;
+    void applyNativeIcons();
+    void destroyNativeIcons();
+
+    GLFWwindow *window_ = nullptr;
+    void *window_icon_ = nullptr;
+    void *taskbar_icon_ = nullptr;
 
-    GLFWwindow* window_ = nullptr;
     float dpi_scale_ = 1.0f;
     bool dpi_changed_ = false;
+
+    WindowCornerMode corner_mode_ = WindowCornerMode::Round;
+
+    // 0x00BBGGRR, same layout Windows COLORREF uses.
+    std::uint32_t caption_color_ = 0x00201B19;
 };

src/models/repository.h

@@ -1,6 +1,8 @@
 #pragma once
 
 #include <git2.h>
+#include <chrono>
+#include <map>
 #include <set>
 #include <string>
 #include <vector>
@@ -28,37 +30,66 @@ struct WorkingFile {
     bool staged = false;
 };
 
+struct BranchDivergence {
+    size_t ahead = 0;
+    size_t behind = 0;
+};
+
+enum class ToolbarHistoryActionKind { none, checkout, commit };
+
+struct ToolbarHistoryAction {
+    ToolbarHistoryActionKind kind = ToolbarHistoryActionKind::none;
+    bool available = false;
+    std::string tooltip;
+    std::string source;
+    std::string target;
+    std::string summary;
+};
+
 struct CommitInfo {
     git_oid oid{};
     std::string short_id;
     std::string summary;
+    std::string description;
     std::string author;
     std::string email;
     std::string date;
     int parents = 0;
     int lane = 0;
+    int graph_color = 0;
     std::vector<git_oid> parent_ids;
     std::vector<RefBadge> refs;
     std::vector<ChangedFile> changed_files;
+    std::vector<ChangedFile> all_files;
     bool changes_loaded = false;
+    bool all_files_loaded = false;
 };
 
 struct RepositoryView {
     git_repository* repo = nullptr;
     git_revwalk* commit_walk = nullptr;
     bool history_exhausted = false;
+    bool credentials_checked = false;
     std::string path;
     std::string name = "New Tab";
     std::string branch = "detached";
     std::vector<std::string> local_branches;
     std::vector<std::string> remote_branches;
+    std::map<std::string, BranchDivergence> local_branch_divergence;
+    std::map<std::string, BranchDivergence> remote_branch_divergence;
     std::vector<std::string> remotes;
     std::vector<std::string> worktrees;
     std::set<std::string> worktree_branches;
     std::vector<std::string> submodules;
+    std::map<std::string, unsigned int> submodule_statuses;
     std::vector<CommitInfo> commits;
     std::vector<WorkingFile> working_files;
     int selected_commit = 0;
+    int scroll_to_commit = -1;
+    std::chrono::steady_clock::time_point last_background_refresh{};
+    bool pending_background_refresh = false;
+    ToolbarHistoryAction undo_action;
+    ToolbarHistoryAction redo_action;
 
     RepositoryView() = default;
     ~RepositoryView() { close(); }
@@ -70,5 +101,6 @@ struct RepositoryView {
         commit_walk = nullptr;
         if (repo) git_repository_free(repo);
         repo = nullptr;
+        credentials_checked = false;
     }
 };

src/ui/diff_viewer.h

@@ -4,15 +4,20 @@
 #include <vector>
 
 class GitManager;
+class AvatarCache;
 struct RepositoryView;
+struct ImFont;
 
 class DiffViewer {
 public:
     void open(RepositoryView& repository, GitManager& manager, const std::string& path,
         bool staged, std::string& notice);
+    void openCommit(RepositoryView& repository, GitManager& manager, const std::string& path,
+        const std::string& commit_id, std::string& notice);
     void close();
     bool isOpen() const { return !path_.empty(); }
-    void draw(RepositoryView& repository, GitManager& manager, float scale, std::string& notice);
+    void draw(RepositoryView& repository, GitManager& manager, AvatarCache* avatars,
+        float scale, ImFont* code_font, std::string& notice);
 
 private:
     enum class Mode { diff, file, blame, history };
@@ -29,17 +34,40 @@ private:
         std::vector<Line> lines;
         std::string patch;
     };
+    struct BlameLine {
+        std::string hash;
+        std::string author;
+        std::string email;
+        std::string date;
+        std::string summary;
+        std::string text;
+        int line_number = 0;
+        bool show_attribution = false;
+    };
+    struct HistoryEntry {
+        std::string hash;
+        std::string date;
+        std::string author;
+        std::string summary;
+    };
 
     std::string path_;
+    std::string commit_id_;
     bool staged_ = false;
     Mode mode_ = Mode::diff;
     std::string file_header_;
     std::vector<Hunk> hunks_;
     std::vector<std::string> file_lines_;
-    std::vector<std::string> blame_lines_;
-    std::vector<std::string> history_lines_;
+    std::vector<BlameLine> blame_lines_;
+    std::vector<HistoryEntry> history_entries_;
+    bool line_wrap_ = false;
+    bool scroll_to_top_ = false;
+    bool minimap_drag_active_ = false;
+    float minimap_drag_offset_ = 0.0f;
 
     void reload(RepositoryView& repository, GitManager& manager, std::string& notice);
     void loadSupplement(RepositoryView& repository, GitManager& manager, Mode mode, std::string& notice);
     void parseDiff(const std::string& text);
+    void parseBlame(const std::string& text);
+    void parseHistory(const std::string& text);
 };

src/ui/graph_renderer.cpp

@@ -2,10 +2,112 @@
 
 #include "managers/avatar_cache.h"
 #include "models/repository.h"
-#include <IconsFontAwesome6.h>
+#include <IconsTabler.h>
 
 #include <algorithm>
+#include <array>
 #include <cmath>
+#include <limits>
+
+namespace {
+
+struct RoutedEdge {
+    int child_row = -1;
+    int parent_row = -1;
+    int child_lane = 0;
+    int parent_lane = 0;
+    int route_slot = 0;
+    int color_lane = 0;
+    int detour_lane = -1;
+};
+
+template <size_t Count>
+void drawRoundedPolyline(ImDrawList* draw, const std::array<ImVec2, Count>& points,
+        float radius, ImU32 color, float thickness) {
+    static_assert(Count >= 2);
+    draw->PathClear();
+    draw->PathLineTo(points.front());
+    for (size_t index = 1; index + 1 < Count; ++index) {
+        const ImVec2 previous = points[index - 1];
+        const ImVec2 corner = points[index];
+        const ImVec2 next = points[index + 1];
+        const float incoming_length = std::hypot(corner.x - previous.x, corner.y - previous.y);
+        const float outgoing_length = std::hypot(next.x - corner.x, next.y - corner.y);
+        if (incoming_length < 0.01f || outgoing_length < 0.01f) continue;
+        const float turn_radius = std::min({radius, incoming_length * 0.5f, outgoing_length * 0.5f});
+        const ImVec2 incoming{
+            (corner.x - previous.x) / incoming_length,
+            (corner.y - previous.y) / incoming_length,
+        };
+        const ImVec2 outgoing{
+            (next.x - corner.x) / outgoing_length,
+            (next.y - corner.y) / outgoing_length,
+        };
+        const ImVec2 before{
+            corner.x - incoming.x * turn_radius,
+            corner.y - incoming.y * turn_radius,
+        };
+        const ImVec2 after{
+            corner.x + outgoing.x * turn_radius,
+            corner.y + outgoing.y * turn_radius,
+        };
+        constexpr float control = 0.55228475f;
+        draw->PathLineTo(before);
+        draw->PathBezierCubicCurveTo(
+            {before.x + incoming.x * turn_radius * control,
+                before.y + incoming.y * turn_radius * control},
+            {after.x - outgoing.x * turn_radius * control,
+                after.y - outgoing.y * turn_radius * control},
+            after);
+    }
+    draw->PathLineTo(points.back());
+    draw->PathStroke(color, ImDrawFlags_None, thickness);
+}
+
+void drawOrthogonalEdge(ImDrawList* draw, const ImVec2& child, const ImVec2& parent,
+        ImU32 color, float scale, int route_slot, float detour_x) {
+    const float thickness = 2.0f * scale;
+    const float horizontal = parent.x - child.x;
+    const float vertical = parent.y - child.y;
+    if (vertical <= 0.0f) {
+        draw->AddLine(child, parent, color, thickness);
+        return;
+    }
+
+    // Offset detour route lines horizontally by slot to avoid lane collisions
+    const float slot_offset = static_cast<float>(route_slot) * 4.0f * scale;
+
+    if (std::isfinite(detour_x)) {
+        const float final_detour_x = detour_x + slot_offset;
+        if (std::abs(final_detour_x - child.x) < 0.5f * scale) {
+            drawRoundedPolyline(draw, std::array{child, ImVec2{final_detour_x, parent.y}, parent},
+                7.0f * scale, color, thickness);
+        } else if (std::abs(final_detour_x - parent.x) < 0.5f * scale) {
+            drawRoundedPolyline(draw, std::array{child, ImVec2{final_detour_x, child.y}, parent},
+                7.0f * scale, color, thickness);
+        } else {
+            drawRoundedPolyline(draw,
+                std::array{child, ImVec2{final_detour_x, child.y}, ImVec2{final_detour_x, parent.y}, parent},
+                7.0f * scale, color, thickness);
+        }
+        return;
+    }
+
+    if (std::abs(horizontal) < 0.5f * scale) {
+        draw->AddLine(child, parent, color, thickness);
+        return;
+    }
+
+    // Bends remain anchored to commit rows, but use a compact quarter-round turn.
+    if (route_slot == 0)
+        drawRoundedPolyline(draw, std::array{child, ImVec2{child.x, parent.y}, parent},
+            7.0f * scale, color, thickness);
+    else
+        drawRoundedPolyline(draw, std::array{child, ImVec2{parent.x, child.y}, parent},
+            7.0f * scale, color, thickness);
+}
+
+} // namespace
 
 ImU32 GraphRenderer::laneColor(int lane, int alpha) {
     static constexpr ImVec4 colors[] = {
@@ -25,35 +127,47 @@ ImU32 GraphRenderer::laneColor(int lane, int alpha) {
 float GraphRenderer::requiredWidth(const std::vector<CommitInfo>& commits, float scale) {
     int maximum_lane = 0;
     for (const auto& commit : commits) maximum_lane = std::max(maximum_lane, commit.lane);
-    return std::clamp((42.0f + maximum_lane * 18.0f) * scale, 56.0f * scale, 220.0f * scale);
+    // Keep one spare lane available for edges that must route around occupied commit lanes.
+    return std::max((68.0f + maximum_lane * 28.0f) * scale, 82.0f * scale);
 }
 
 void GraphRenderer::drawRow(int row, const CommitInfo& commit,
         const std::vector<CommitInfo>& commits, const std::vector<float>& row_heights,
-        const std::vector<std::vector<int>>& parent_rows, AvatarCache* avatars) const {
+        const std::vector<std::vector<int>>& parent_rows, AvatarCache* avatars,
+        const ImVec2* ref_connector_start) const {
     ImDrawList* draw = ImGui::GetWindowDrawList();
     const ImVec2 origin = ImGui::GetCursorScreenPos();
     const float row_height = row_heights[static_cast<size_t>(row)];
     const float content_height = std::max(px(1.0f), row_height - ImGui::GetStyle().CellPadding.y * 2.0f);
-    const float lane_spacing = px(18.0f);
-    const float x = origin.x + px(15.0f) + lane_spacing * commit.lane;
+    const float lane_spacing = px(28.0f);
+    const float x = origin.x + px(17.0f) + lane_spacing * commit.lane;
     const float y = origin.y + content_height * 0.5f;
     const float cell_right = origin.x + ImGui::GetContentRegionAvail().x;
     const float row_clip_padding = ImGui::GetStyle().CellPadding.y + px(1.0f);
 
-    // GitKraken-style lane ribbon: a quiet tint carries the branch color through
-    // the rest of the graph column while the far edge remains crisply identifiable.
+    // Start the lane ribbon at the profile circle's centerline. The opaque node backing
+    // masks its left edge, while the vertical inset keeps neighboring row tints separate.
+    const float ribbon_left = std::min(x, cell_right);
+    const float ribbon_top = origin.y + px(1.0f);
+    const float ribbon_bottom = origin.y + content_height - px(1.0f);
     draw->AddRectFilled(
-        {x, origin.y - row_clip_padding},
-        {cell_right, origin.y + content_height + row_clip_padding},
-        laneColor(commit.lane, 38));
+        {ribbon_left, ribbon_top},
+        {cell_right, ribbon_bottom},
+        laneColor(commit.graph_color, 38));
     draw->AddLine(
-        {cell_right - px(1.0f), origin.y - row_clip_padding},
-        {cell_right - px(1.0f), origin.y + content_height + row_clip_padding},
-        laneColor(commit.lane, 220), px(2.0f));
-    if (!commit.refs.empty())
-        draw->AddLine({origin.x - ImGui::GetStyle().CellPadding.x, y}, {x, y},
-            laneColor(commit.lane, 150), px(1.0f));
+        {cell_right - px(1.0f), ribbon_top},
+        {cell_right - px(1.0f), ribbon_bottom},
+        laneColor(commit.graph_color, 215), px(2.0f));
+    if (ref_connector_start) {
+        const ImVec2 end{x, y};
+        const float turn_x = end.x - px(8.0f);
+        draw->PushClipRectFullScreen();
+        drawRoundedPolyline(draw,
+            std::array{*ref_connector_start, ImVec2{turn_x, ref_connector_start->y},
+                ImVec2{turn_x, end.y}, end},
+            px(5.0f), laneColor(commit.graph_color, 190), px(1.8f));
+        draw->PopClipRect();
+    }
 
     std::vector<float> row_offsets(row_heights.size() + 1, 0.0f);
     for (size_t index = 0; index < row_heights.size(); ++index)
@@ -64,57 +178,124 @@ void GraphRenderer::drawRow(int row, const CommitInfo& commit,
             (row_heights[static_cast<size_t>(index)] - ImGui::GetStyle().CellPadding.y * 2.0f) * 0.5f;
     };
 
+    int maximum_lane = 0;
+    for (const auto& item : commits) maximum_lane = std::max(maximum_lane, item.lane);
+
+    std::vector<RoutedEdge> routed_edges;
+    routed_edges.reserve(commits.size() * 2);
+    const auto route_spans_overlap = [](const RoutedEdge& left, const RoutedEdge& right) {
+        const int top = std::max(left.child_row, right.child_row);
+        const int bottom = std::min(left.parent_row, right.parent_row);
+        return top < bottom;
+    };
+    const auto commit_blocks_lane = [&](int candidate_lane, int child_row, int parent_row) {
+        for (int intermediate = child_row + 1; intermediate < parent_row; ++intermediate) {
+            if (row_heights[static_cast<size_t>(intermediate)] > 0.0f &&
+                    commits[static_cast<size_t>(intermediate)].lane == candidate_lane)
+                return true;
+        }
+        return false;
+    };
+    const auto route_blocks_lane = [&](int candidate_lane, int child_row, int parent_row) {
+        const RoutedEdge probe{child_row, parent_row, 0, 0, 0, 0, candidate_lane};
+        return std::any_of(routed_edges.begin(), routed_edges.end(), [&](const RoutedEdge& edge) {
+            return edge.detour_lane == candidate_lane && route_spans_overlap(edge, probe);
+        });
+    };
+    const auto lane_available = [&](int candidate_lane, int child_row, int parent_row) {
+        return !commit_blocks_lane(candidate_lane, child_row, parent_row) &&
+            !route_blocks_lane(candidate_lane, child_row, parent_row);
+    };
+
+    for (int child_row = 0; child_row < static_cast<int>(commits.size()); ++child_row) {
+        const auto& child_parents = parent_rows[static_cast<size_t>(child_row)];
+        for (size_t parent_index = 0; parent_index < child_parents.size(); ++parent_index) {
+            const int parent_row = child_parents[parent_index];
+            if (parent_row <= child_row) continue;
+
+            const CommitInfo& child_commit = commits[static_cast<size_t>(child_row)];
+            const CommitInfo& parent_commit = commits[static_cast<size_t>(parent_row)];
+            const int preferred_lane = parent_index == 0 ? child_commit.lane : parent_commit.lane;
+            int detour_lane = -1;
+
+            if (!lane_available(preferred_lane, child_row, parent_row)) {
+                for (int distance = 1; distance <= maximum_lane + 2; ++distance) {
+                    const int left = preferred_lane - distance;
+                    const int right = preferred_lane + distance;
+                    if (left >= 0 && lane_available(left, child_row, parent_row)) {
+                        detour_lane = left;
+                        break;
+                    }
+                    if (lane_available(right, child_row, parent_row)) {
+                        detour_lane = right;
+                        maximum_lane = std::max(maximum_lane, right);
+                        break;
+                    }
+                }
+                if (detour_lane < 0) {
+                    detour_lane = maximum_lane + 1;
+                    maximum_lane = detour_lane;
+                }
+            }
+
+            RoutedEdge route;
+            route.child_row = child_row;
+            route.parent_row = parent_row;
+            route.child_lane = child_commit.lane;
+            route.parent_lane = parent_commit.lane;
+            route.route_slot = static_cast<int>(parent_index);
+            route.detour_lane = detour_lane;
+            route.color_lane = detour_lane >= 0 ? detour_lane : preferred_lane;
+            routed_edges.push_back(route);
+        }
+    }
+
     // Every row redraws edges crossing its clip rectangle. This keeps long paths continuous
     // without allowing table row clipping to cut out intermediate segments.
     draw->PushClipRect(
         {origin.x, origin.y - row_clip_padding},
         {origin.x + ImGui::GetContentRegionAvail().x, origin.y + content_height + row_clip_padding}, true);
-    for (int child_row = 0; child_row < static_cast<int>(commits.size()); ++child_row) {
-        if (row_heights[static_cast<size_t>(child_row)] <= 0.0f) continue;
-        const CommitInfo& child = commits[static_cast<size_t>(child_row)];
-        for (const int parent_row : parent_rows[static_cast<size_t>(child_row)]) {
-            if (parent_row <= child_row || row < child_row || row > parent_row ||
-                    row_heights[static_cast<size_t>(parent_row)] <= 0.0f) continue;
-            const CommitInfo& parent = commits[static_cast<size_t>(parent_row)];
+    for (const RoutedEdge& route : routed_edges) {
+        if (row < route.child_row || row > route.parent_row ||
+                row_heights[static_cast<size_t>(route.child_row)] <= 0.0f ||
+                row_heights[static_cast<size_t>(route.parent_row)] <= 0.0f)
+            continue;
 
-            const float child_x = origin.x + px(15.0f) + lane_spacing * child.lane;
-            const float parent_x = origin.x + px(15.0f) + lane_spacing * parent.lane;
-            const float child_y = center_y(child_row);
-            const float parent_y = center_y(parent_row);
-            // An edge belongs to the branch it leaves, including the curved transition
-            // into a parent lane, so its color stays consistent with the child node/ref chip.
-            const ImU32 color = laneColor(child.lane, 225);
-            if (child.lane == parent.lane) {
-                draw->AddLine({child_x, child_y}, {parent_x, parent_y}, color, px(1.8f));
-                continue;
-            }
+        const float child_x = origin.x + px(17.0f) + lane_spacing * route.child_lane;
+        const float parent_x = origin.x + px(17.0f) + lane_spacing * route.parent_lane;
+        const float child_y = center_y(route.child_row);
+        const float parent_y = center_y(route.parent_row);
+        const float detour_x = route.detour_lane >= 0
+            ? origin.x + px(17.0f) + lane_spacing * route.detour_lane
+            : std::numeric_limits<float>::quiet_NaN();
 
-            const float bend_height = std::min(parent_y - child_y, px(24.0f));
-            const float curve_end_y = child_y + bend_height;
-            draw->AddBezierCubic(
-                {child_x, child_y},
-                {child_x, child_y + bend_height * 0.45f},
-                {parent_x, child_y + bend_height * 0.55f},
-                {parent_x, curve_end_y},
-                color, px(1.8f));
-            if (curve_end_y < parent_y)
-                draw->AddLine({parent_x, curve_end_y}, {parent_x, parent_y}, color, px(1.8f));
-        }
+            drawOrthogonalEdge(draw, {child_x, child_y}, {parent_x, parent_y},
+                laneColor(route.color_lane, 235), scale_, route.route_slot, detour_x);
     }
     draw->PopClipRect();
 
-    const ImU32 lane_color = laneColor(commit.lane);
+    const ImU32 lane_color = laneColor(commit.graph_color);
+    const auto show_identity_tooltip = [&](float hit_radius) {
+        if (!ImGui::IsWindowHovered()) return;
+        const ImVec2 mouse = ImGui::GetIO().MousePos;
+        const float delta_x = mouse.x - x;
+        const float delta_y = mouse.y - y;
+        if (delta_x * delta_x + delta_y * delta_y > hit_radius * hit_radius) return;
+        if (commit.email.empty()) ImGui::SetTooltip("%s", commit.author.c_str());
+        else ImGui::SetTooltip("%s <%s>", commit.author.c_str(), commit.email.c_str());
+    };
     if (commit.parents > 1) {
-        draw->AddCircleFilled({x, y}, px(4.5f), lane_color);
-        draw->AddCircle({x, y}, px(6.0f), laneColor(commit.lane, 110), 0, px(1.0f));
+        draw->AddCircleFilled({x, y}, px(6.0f), lane_color);
+        draw->AddCircle({x, y}, px(7.5f), laneColor(commit.graph_color, 130), 0, px(1.2f));
+        show_identity_tooltip(px(9.0f));
         ImGui::Dummy({0.0f, content_height});
         return;
     }
 
-    const float radius = px(8.4f);
+    const float radius = px(9.6f);
     // The opaque backing masks every lane segment before the avatar is painted.
-    draw->AddCircleFilled({x, y}, radius + px(2.2f), IM_COL32(19, 24, 31, 255));
-    draw->AddCircle({x, y}, radius + px(1.0f), lane_color, 0, px(2.0f));
+    draw->AddCircleFilled({x, y}, radius + px(1.8f), IM_COL32(19, 24, 31, 255));
+    draw->AddCircle({x, y}, radius + px(0.8f), lane_color, 0, px(2.0f));
     draw->AddCircleFilled({x, y}, radius - px(1.0f), IM_COL32(232, 238, 242, 255));
 
     const unsigned int texture = avatars ? avatars->textureFor(commit.email) : 0;
@@ -124,8 +305,9 @@ void GraphRenderer::drawRow(int row, const CommitInfo& commit,
             {x + radius - px(1.5f), y + radius - px(1.5f)},
             {0, 0}, {1, 1}, IM_COL32_WHITE, radius);
     } else {
-        const ImVec2 icon_size = ImGui::CalcTextSize(ICON_FA_USER);
-        draw->AddText({x - icon_size.x * 0.5f, y - icon_size.y * 0.5f}, lane_color, ICON_FA_USER);
+        const ImVec2 icon_size = ImGui::CalcTextSize(ICON_TB_USER);
+        draw->AddText({x - icon_size.x * 0.5f, y - icon_size.y * 0.5f}, lane_color, ICON_TB_USER);
     }
+    show_identity_tooltip(radius + px(2.0f));
     ImGui::Dummy({0.0f, content_height});
 }

src/ui/graph_renderer.h

@@ -15,7 +15,7 @@ public:
 
     void drawRow(int row, const CommitInfo& commit, const std::vector<CommitInfo>& commits,
         const std::vector<float>& row_heights, const std::vector<std::vector<int>>& parent_rows,
-        AvatarCache* avatars) const;
+        AvatarCache* avatars, const ImVec2* ref_connector_start = nullptr) const;
 
 private:
     float px(float value) const { return value * scale_; }

vendor/icons/IconsTabler.h

@@ -0,0 +1,76 @@
+#pragma once
+
+// Tabler Icons 3.44.0 outline webfont glyphs used by Gitree.
+#define ICON_MIN_TB 0xEA06
+#define ICON_MAX_TB 0xFAF7
+
+#define ICON_TB_ANGLE_RIGHT "\xee\xa9\xa1"
+#define ICON_TB_ARROW_DOWN "\xee\xa8\x96"
+#define ICON_TB_ARROW_DOWN_A_Z "\xee\xbc\x98"
+#define ICON_TB_ARROW_DOWN_Z_A "\xee\xbc\x9a"
+#define ICON_TB_ARROW_RIGHT_ARROW_LEFT "\xef\x87\xb4"
+#define ICON_TB_ARROW_UP "\xee\xa8\xa5"
+#define ICON_TB_ARROW_UP_RIGHT_FROM_SQUARE "\xee\xaa\x99"
+#define ICON_TB_BARS "\xee\xb1\x82"
+#define ICON_TB_BRAND_C_SHARP "\xef\x80\x83"
+#define ICON_TB_BRAND_CPP "\xef\x97\xbe"
+#define ICON_TB_BRAND_CSS3 "\xee\xb5\xab"
+#define ICON_TB_BRAND_GOLANG "\xef\x9e\x8d"
+#define ICON_TB_BRAND_HTML5 "\xee\xb5\xac"
+#define ICON_TB_BRAND_JAVASCRIPT "\xee\xbc\x8c"
+#define ICON_TB_BRAND_NODEJS "\xef\xab\xa0"
+#define ICON_TB_BRAND_POWERSHELL "\xef\x97\xad"
+#define ICON_TB_BRAND_PYTHON "\xee\xb4\x81"
+#define ICON_TB_BRAND_RUST "\xef\xa9\x93"
+#define ICON_TB_BRAND_TYPESCRIPT "\xef\x97\xb1"
+#define ICON_TB_BOX_ARCHIVE "\xee\xa8\x8b"
+#define ICON_TB_BOX_OPEN "\xef\x81\xba"
+#define ICON_TB_CARET_DOWN "\xee\xad\x9d"
+#define ICON_TB_CHECK "\xee\xa9\x9e"
+#define ICON_TB_CHEVRON_DOWN "\xee\xa9\x9f"
+#define ICON_TB_CHEVRON_RIGHT "\xee\xa9\xa1"
+#define ICON_TB_CIRCLE_CHEVRON_LEFT "\xef\x98\xa3"
+#define ICON_TB_CIRCLE_CHEVRON_RIGHT "\xef\x98\xa4"
+#define ICON_TB_CIRCLE_DOT "\xee\xbe\xb1"
+#define ICON_TB_CIRCLE_NODES "\xee\xaa\xb5"
+#define ICON_TB_CLOCK_ROTATE_LEFT "\xee\xaf\xaa"
+#define ICON_TB_CLOUD "\xee\xa9\xb6"
+#define ICON_TB_CODE "\xee\xa9\xb7"
+#define ICON_TB_CODE_BRANCH "\xee\xaa\xb2"
+#define ICON_TB_COMPUTER "\xee\xaa\x89"
+#define ICON_TB_COPY "\xee\xa9\xba"
+#define ICON_TB_CUBES "\xee\xb8\x97"
+#define ICON_TB_DESKTOP "\xee\xaa\x89"
+#define ICON_TB_DEVICE_LAPTOP "\xee\xad\xa4"
+#define ICON_TB_DOWNLOAD "\xee\xaa\x96"
+#define ICON_TB_EYE "\xee\xaa\x9a"
+#define ICON_TB_FILE "\xee\xaa\xa4"
+#define ICON_TB_FILE_CODE "\xee\xaf\x90"
+#define ICON_TB_FILE_TEXT "\xee\xaa\xa2"
+#define ICON_TB_FOLDER "\xee\xaa\xad"
+#define ICON_TB_FOLDER_OPEN "\xef\xab\xb7"
+#define ICON_TB_FOLDER_TREE "\xee\xba\x9d"
+#define ICON_TB_GLOBE "\xee\xad\x94"
+#define ICON_TB_JET_FIGHTER_UP "\xef\x87\xad"
+#define ICON_TB_JSON "\xef\x9e\xb2"
+#define ICON_TB_LAYERS_LINKED "\xee\xba\xa1"
+#define ICON_TB_MAGNIFYING_GLASS "\xee\xac\x9c"
+#define ICON_TB_MARKDOWN "\xee\xb1\x81"
+#define ICON_TB_MINUS "\xee\xab\xb2"
+#define ICON_TB_PEN "\xee\xac\x84"
+#define ICON_TB_PLUS "\xee\xac\x8b"
+#define ICON_TB_ROBOT "\xef\x80\x8b"
+#define ICON_TB_ROTATE_LEFT "\xee\xac\x96"
+#define ICON_TB_ROTATE_RIGHT "\xee\xac\x95"
+#define ICON_TB_SERVER "\xee\xac\x9f"
+#define ICON_TB_TAG "\xee\xbe\x86"
+#define ICON_TB_TERMINAL "\xee\xaf\xaf"
+#define ICON_TB_TERMINAL_2 "\xee\xaf\xaf"
+#define ICON_TB_TRASH_CAN "\xee\xad\x81"
+#define ICON_TB_TREE "\xee\xbc\x81"
+#define ICON_TB_TRIANGLE_EXCLAMATION "\xee\xa8\x86"
+#define ICON_TB_UPLOAD "\xee\xad\x87"
+#define ICON_TB_USER "\xee\xad\x8d"
+#define ICON_TB_WINDOW_MAXIMIZE "\xee\xab\xaa"
+#define ICON_TB_XMARK "\xee\xad\x95"
+#define ICON_TB_FILE_TYPE_SQL "\xef\xac\x95"