feat(git): add interactive rebase and reflog recovery features

This update significantly expands Git functionality by implementing support for advanced workflows, including interactive rebasing and recovering lost commits via the reflog. New logic handles preparing the necessary environment files (todo lists and reword queues) required by Git's internal editors. The frontend components are also updated to expose these new capabilities to the user interface.

- Implements full planning and execution flow for interactive rebase
- Adds functionality to list and restore commits using the reflog history
- Updates Rust backend commands to support advanced git operations

src/lib/TitleBar.svelte

@@ -2,7 +2,7 @@
   import { onDestroy, onMount } from "svelte";
   import { getVersion } from "@tauri-apps/api/app";
   import { getCurrentWindow } from "@tauri-apps/api/window";
-  import { CloudDownload, Download, FolderOpen, GitBranch, GitCompare, LoaderCircle, Minus, RefreshCw, Search, Settings, Upload, X } from "@lucide/svelte";
+  import { CloudDownload, Download, FolderOpen, GitBranch, GitCompare, History, ListRestart, LoaderCircle, Minus, RefreshCw, Search, Settings, Upload, X } from "@lucide/svelte";
   import iconUrl from "../../src-tauri/icons/icon.png";
 
   export let branch: string = "";
@@ -20,6 +20,8 @@
   export let onRefresh: () => void = () => {};
   export let onSearch: () => void = () => {};
   export let onCompare: () => void = () => {};
+  export let onInteractiveRebase: () => void = () => {};
+  export let onReflog: () => void = () => {};
   export let onOpenInExplorer: () => void = () => {};
   export let onToggleAutoRefresh: () => void = () => {};
   export let onOpenSettings: () => void = () => {};
@@ -138,6 +140,28 @@
         <span class="tb-action-label">Compare</span>
       </button>
 
+      <button
+        class="tb-action"
+        onclick={onInteractiveRebase}
+        disabled={!hasRepository || isBusy}
+        title="Interactive rebase"
+        aria-label="Interactive rebase"
+      >
+        <ListRestart size={14} aria-hidden="true" />
+        <span class="tb-action-label">Rebase</span>
+      </button>
+
+      <button
+        class="tb-action"
+        onclick={onReflog}
+        disabled={!hasRepository || isBusy}
+        title="Reflog"
+        aria-label="Reflog"
+      >
+        <History size={14} aria-hidden="true" />
+        <span class="tb-action-label">Reflog</span>
+      </button>
+
       <button
         class="tb-action"
         onclick={onFetch}