feat(ui): add init repository dialog

Add a modal dialog to initialize a new Git repository, replacing the
previous prompt-based flow. It integrates with the app state and invokes
the initialization operation then opens the repository on confirmation.
Also adds styles, keyboard handling, accessibility hints, a folder
browser, initial-branch input, and German/English labels with busy state.

- New dialog component with folder picker, branch input, and i18n.
- Wire dialog open/close and confirm handler to init and open actions.
- Add CSS rules for dialog layout, controls, and error/busy states.

src/App.svelte

@@ -26,6 +26,7 @@
   import DiscardConfirmDialog from "./lib/components/DiscardConfirmDialog.svelte";
   import ExplorerPanel from "./lib/components/ExplorerPanel.svelte";
   import HistoryPanel from "./lib/components/HistoryPanel.svelte";
+  import InitRepositoryDialog from "./lib/components/InitRepositoryDialog.svelte";
   import NewBranchDialog from "./lib/components/NewBranchDialog.svelte";
   import RenameBranchDialog from "./lib/components/RenameBranchDialog.svelte";
   import ReflogDialog from "./lib/components/ReflogDialog.svelte";
@@ -313,6 +314,7 @@
   let repoStatusCache: Record<string, RepoTab> = {};
   let repoSearch = "";
   let cloneDialogOpen = false;
+  let initRepositoryDialogOpen = false;
   let pullStrategy: PullStrategy = (localStorage.getItem("gitlite.pullStrategy") as PullStrategy) || "merge";
   let selectedRemote = localStorage.getItem("gitlite.selectedRemote") || "";
   let remoteActionForceWithLease = false;
@@ -3926,10 +3928,17 @@
   }
 
   async function initializeRepository() {
-    const selected = await openDialog({ directory: true, multiple: false, title: "Choose an empty or existing folder" });
+    initRepositoryDialogOpen = true;
-    if (typeof selected !== "string") return;
+  }
-    const branch = window.prompt("Initial branch name", "main")?.trim(); if (!branch) return;
+
-    await runOperation("Initializing repository", async () => { await initRepository(selected, branch); await openRepo(selected); });
+  async function confirmInitializeRepository(path: string, branch: string) {
+    const selected = path.trim();
+    if (!selected) return;
+    await runOperation("Initializing repository", async () => {
+      await initRepository(selected, branch);
+      initRepositoryDialogOpen = false;
+      await openRepo(selected);
+    });
   }
 
   async function revertHistoryCommit(commit: GitCommit) {
@@ -6090,6 +6099,16 @@
   />
 {/if}
 
+<!-- Initialize repository dialog -->
+{#if initRepositoryDialogOpen}
+  <InitRepositoryDialog
+    isBusy={operation === "Initializing repository"}
+    language={appLanguage}
+    onInit={confirmInitializeRepository}
+    onClose={() => { if (!isBusy) initRepositoryDialogOpen = false; }}
+  />
+{/if}
+
 <!-- Full-screen overlay while a repository is being opened -->
 {#if openingRepo}
   <RepoLoadingOverlay repoName={repoDisplayName} />

src/app.css

@@ -3878,6 +3878,13 @@
     max-height: calc(100vh - 32px);
     overflow: auto;
   }
+  .init-repository-dialog {
+    display: block;
+    width: min(540px, calc(100vw - 32px));
+    height: auto;
+    max-height: calc(100vh - 32px);
+    overflow: auto;
+  }
   .rename-branch-dialog {
     display: block;
     width: min(520px, calc(100vw - 32px));
@@ -4172,6 +4179,34 @@
     gap: 14px;
     padding: 16px;
   }
+  .init-repository-header { padding: 16px 18px; }
+  .init-repository-heading { display: flex; align-items: center; gap: 12px; }
+  .init-repository-heading h2 { margin: 2px 0 0; color: var(--color-ink); font-size: 15px; line-height: 1.25; }
+  .init-repository-icon {
+    display: grid;
+    place-items: center;
+    width: 36px;
+    height: 36px;
+    flex: 0 0 auto;
+    border: 1px solid color-mix(in srgb, var(--color-accent) 34%, var(--color-border));
+    border-radius: 9px;
+    color: var(--color-accent);
+    background: color-mix(in srgb, var(--color-accent) 10%, var(--color-surface-raised));
+  }
+  .init-repository-form { display: flex; flex-direction: column; gap: 16px; padding: 18px; }
+  .init-repository-description { margin: 0; color: var(--color-ink-dim); font-size: 11.5px; line-height: 1.5; }
+  .init-repository-field > span { font-size: 9.5px; }
+  .init-repository-field > div { position: relative; align-items: center; }
+  .init-repository-field > div > svg { position: absolute; left: 11px; z-index: 1; color: var(--color-ink-faint); pointer-events: none; }
+  .init-repository-field > div > input { height: 36px; padding-left: 36px; font-family: var(--font-mono); font-size: 12px; }
+  .init-repository-field small { color: var(--color-ink-faint); font-size: 9.5px; line-height: 1.4; }
+  .init-repository-path-field { padding: 12px; border: 1px solid var(--color-border-subtle); border-radius: 9px; background: var(--color-surface-raised); }
+  .init-repository-path-control { display: grid !important; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
+  .init-repository-path-control > input { grid-column: 1; }
+  .init-repository-browse { grid-column: 2; display: inline-flex; align-items: center; gap: 6px; height: 36px; font-size: 11.5px; white-space: nowrap; }
+  .init-repository-error { color: var(--color-danger, #ff6b78) !important; }
+  .init-repository-actions { padding-top: 2px; }
+  .init-repository-actions > button { font-size: 11.5px; }
   .rename-branch-form {
     display: flex;
     flex-direction: column;

src/lib/components/InitRepositoryDialog.svelte

@@ -0,0 +1,149 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { open as openDialog } from "@tauri-apps/plugin-dialog";
+  import { Folder, FolderOpen, GitBranch, LoaderCircle, Plus, X } from "@lucide/svelte";
+  import type { AppLanguage } from "../types";
+
+  interface Props {
+    isBusy: boolean;
+    language: AppLanguage;
+    onInit: (path: string, branch: string) => void;
+    onClose: () => void;
+  }
+
+  let {
+    isBusy = false,
+    language = "en",
+    onInit = () => {},
+    onClose = () => {},
+  }: Props = $props();
+
+  let path = $state("");
+  let branch = $state("main");
+  let browseError = $state("");
+  const isGerman = $derived(language === "de");
+  const pathPlaceholder = navigator.userAgent.includes("Windows")
+    ? "C:\\Projects\\my-repository"
+    : "/home/user/projects/my-repository";
+
+  function submit(event: SubmitEvent) {
+    event.preventDefault();
+    const targetPath = path.trim();
+    const branchName = branch.trim();
+    if (!targetPath || !branchName || isBusy) return;
+    onInit(targetPath, branchName);
+  }
+
+  function handleKeydown(event: KeyboardEvent) {
+    if (event.key === "Escape" && !isBusy) onClose();
+  }
+
+  async function chooseFolder() {
+    if (isBusy) return;
+    browseError = "";
+    try {
+      const selected = await openDialog({
+        title: isGerman ? "Ordner für das neue Repository auswählen" : "Select folder for the new repository",
+        directory: true,
+        multiple: false,
+        defaultPath: path.trim() || undefined,
+      });
+      if (typeof selected === "string") path = selected;
+    } catch (error) {
+      browseError = error instanceof Error ? error.message : String(error);
+    }
+  }
+
+  onMount(() => {
+    window.addEventListener("keydown", handleKeydown);
+    return () => window.removeEventListener("keydown", handleKeydown);
+  });
+</script>
+
+<div class="dialog-backdrop app-chrome-backdrop" role="presentation">
+  <div
+    class="dialog init-repository-dialog"
+    role="dialog"
+    aria-modal="true"
+    aria-labelledby="init-repository-title"
+    tabindex="-1"
+  >
+    <header class="dialog-header init-repository-header">
+      <div class="init-repository-heading">
+        <span class="init-repository-icon" aria-hidden="true"><Plus size={18} /></span>
+        <div>
+          <span class="eyebrow">{isGerman ? "Neues Repository" : "New repository"}</span>
+          <h2 id="init-repository-title">{isGerman ? "Repository initialisieren" : "Initialize repository"}</h2>
+        </div>
+      </div>
+      <button class="dialog-close" type="button" onclick={onClose} disabled={isBusy} title={isGerman ? "Schließen" : "Close"}>
+        <X size={18} aria-hidden="true" />
+      </button>
+    </header>
+
+    <form class="init-repository-form" onsubmit={submit}>
+      <p class="init-repository-description">
+        {isGerman
+          ? "GitLite richtet in diesem Ordner ein neues Git-Repository ein. Vorhandene Dateien bleiben unverändert."
+          : "GitLite will create a new Git repository in this folder. Existing files will remain unchanged."}
+      </p>
+
+      <label class="new-branch-field init-repository-field init-repository-path-field">
+        <span>{isGerman ? "Zielordner" : "Repository folder"}</span>
+        <div class="init-repository-path-control">
+          <Folder size={16} aria-hidden="true" />
+          <!-- svelte-ignore a11y_autofocus -->
+          <input
+            bind:value={path}
+            autocomplete="off"
+            spellcheck="false"
+            placeholder={pathPlaceholder}
+            disabled={isBusy}
+            autofocus
+            aria-describedby="init-repository-path-hint"
+          />
+          <button class="btn-secondary init-repository-browse" type="button" onclick={chooseFolder} disabled={isBusy}>
+            <FolderOpen size={15} aria-hidden="true" />
+            {isGerman ? "Auswählen…" : "Browse…"}
+          </button>
+        </div>
+        <small id="init-repository-path-hint">
+          {isGerman ? "Der Ordner wird angelegt, falls er noch nicht existiert." : "The folder will be created if it does not exist."}
+        </small>
+        {#if browseError}<small class="init-repository-error" role="alert">{browseError}</small>{/if}
+      </label>
+
+      <label class="new-branch-field init-repository-field">
+        <span>{isGerman ? "Name des ersten Branches" : "Initial branch name"}</span>
+        <div>
+          <GitBranch size={16} aria-hidden="true" />
+          <input
+            bind:value={branch}
+            autocomplete="off"
+            spellcheck="false"
+            placeholder="main"
+            disabled={isBusy}
+            aria-describedby="init-repository-branch-hint"
+          />
+        </div>
+        <small id="init-repository-branch-hint">
+          {isGerman ? "Du kannst den Branch später jederzeit umbenennen." : "You can rename the branch at any time."}
+        </small>
+      </label>
+
+      <div class="new-branch-actions init-repository-actions">
+        <button class="btn-secondary" type="button" onclick={onClose} disabled={isBusy}>
+          {isGerman ? "Abbrechen" : "Cancel"}
+        </button>
+        <button class="btn-primary" type="submit" disabled={isBusy || path.trim().length === 0 || branch.trim().length === 0}>
+          {#if isBusy}
+            <LoaderCircle class="spin" size={16} aria-hidden="true" />
+          {:else}
+            <Plus size={16} aria-hidden="true" />
+          {/if}
+          {isGerman ? "Repository erstellen" : "Create repository"}
+        </button>
+      </div>
+    </form>
+  </div>
+</div>