feat: Third pass aligning core experience with IntelliJ IDEA

Project & files
- Project view modes (Project Files / Open Files / All Changed Files /
  Scratches); External Libraries for Python, JDK (src.zip), Node, Cargo, Go,
  Maven/Gradle jars; read-only jar/zip browsing
- ⌘N New popup with type search and more file kinds; New Project, Rename
  Project, Reload All from Disk, Export/Import Settings, Power Save Mode
- File type associations, extra content roots and exclude patterns (indexed
  and watched without reopening the project)

Editor & navigation
- Find bar: search scope (comments/strings), Preserve Case, Exclude, multiline,
  history; Find in Files: Module scope, custom pattern scopes, multiline
- Search Everywhere filters, Assign Shortcut, settings results; named bookmark
  lists, file/folder bookmarks; Structure filters and Show Inherited; Recent
  Locations timestamps and breadcrumbs; Code Vision author
- Completion options, editor tab placement/layout, inline completion (LSP 3.18)
- Spell checking (Typo inspection, ide-spell) and Inspections settings with
  custom profiles; Code Style schemes, formatter markers, Do not format

Run, VCS, services, database
- Typed run configurations (Shell, Program, npm, Gradle, Maven, Docker,
  Compound), Modify options, Before launch, env dialog, Current File,
  Emulate terminal (PTY)
- Git log graph/view options, Go to Hash/Branch/Tag, date filter keeps the
  graph; Pull/Merge/Rebase dialogs, Manage Remotes, Worktrees
- Generic Services host (Docker connections/registries, run sessions); TODO
  scope/changes tabs with changelists; Coverage report import
- Data sources: wire-compatible vendors, URL import, SSL certs, Options,
  Schemas and Advanced tabs, color and comment

Workbench
- Run Anything, Customize Main Toolbar, named tool window layouts, menu
  completeness, Code Cleanup, macros, "Don't Show Again", editor banners
- Chinese translations for the new UI

Claude-Session: https://claude.ai/code/session_01SaPPsVPuk6ZTNsoUCNCbMv

src/features/app/app.module.css

@@ -180,3 +180,37 @@
   margin: 4px 0 0;
   color: var(--fg-weak-warning);
 }
+
+/* File › New Project… */
+.newProject {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  padding: 16px;
+}
+.newProjectRow {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+.newProjectRow > :nth-child(2) {
+  flex: 1;
+  min-width: 0;
+}
+.newProjectLabel {
+  flex: none;
+  width: 72px;
+  color: var(--fg);
+}
+.newProjectHint {
+  min-height: 1.5em;
+  padding-left: 80px;
+  color: var(--fg-subtle);
+  font-size: var(--fs-small);
+  overflow-wrap: anywhere;
+}
+.newProjectError {
+  color: var(--danger);
+  font-size: var(--fs-small);
+  overflow-wrap: anywhere;
+}