Files tab: multi-selection, drag-and-drop, keyboard shortcuts, custom confirm modal, SVG icons

Backend fixes:
- Wire search service in App struct, implement Search() bindings
- Fix OpenFile to use files.Service.Open() instead of stub
- Fix OpenFolder to open spaces/<slug>/ instead of vault root
- Remove unused imports and dead code in app.go

Frontend fixes:
- Add missing Svelte plugin to vite.config.js (blocking build error)
- Fix optional catch binding for compatibility
- Fix select dropdown rendering on Linux (appearance: none + custom arrow)
- Switch api/verstak.js to use generated Wails v2 bindings
- Include hand-written wailsjs bindings in repository
- Add build.sh to repository

Build:
  cd frontend && npm run build
  rm -rf cmd/verstak-gui/frontend-dist && cp -r frontend/dist cmd/verstak-gui/frontend-dist
  go build -tags 'gui production webkit2_41' -o verstak-gui ./cmd/verstak-gui

build.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+cd frontend && npm run build && cd ..
+rm -rf cmd/verstak-gui/frontend-dist && cp -r frontend/dist cmd/verstak-gui/frontend-dist
+go build -tags "gui production webkit2_41" -o verstak-gui ./cmd/verstak-gui

cmd/verstak-gui/app.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"strings"
 
 	wailsruntime "github.com/wailsapp/wails/v2/pkg/runtime"
@@ -13,10 +14,13 @@ import (
 	"verstak/internal/core/files"
 	"verstak/internal/core/notes"
 	"verstak/internal/core/nodes"
+	"verstak/internal/core/search"
 	"verstak/internal/core/storage"
 	"verstak/internal/core/worklog"
 )
 
+
+
 // App is the Wails v2 application adapter. It wraps core services.
 type App struct {
 	ctx     context.Context
@@ -26,12 +30,18 @@ type App struct {
 	notes   *notes.Service
 	actions *actions.Service
 	worklog *worklog.Service
+	search  *search.Service
 	vault   string
 }
 
-// startup is called when the app starts. Store context.
+// startup is called when the app starts. Store context and wire drag-and-drop.
 func (a *App) startup(ctx context.Context) {
 	a.ctx = ctx
+	wailsruntime.OnFileDrop(ctx, func(x, y int, paths []string) {
+		if len(paths) > 0 {
+			wailsruntime.EventsEmit(ctx, "files-dropped", paths)
+		}
+	})
 }
 
 // ============================================================
@@ -72,6 +82,16 @@ type FileDTO struct {
 	Missing  bool   `json:"missing"`
 }
 
+type FileTreeItemDTO struct {
+	ID     string `json:"id"`
+	Name   string `json:"name"`
+	Type   string `json:"type"` // "folder" | "file"
+	FileID string `json:"fileId,omitempty"`
+	Size   int64  `json:"size,omitempty"`
+	Mime   string `json:"mime,omitempty"`
+	HasKids bool  `json:"hasKids"`
+}
+
 type ActionDTO struct {
 	ID     string `json:"id"`
 	NodeID string `json:"nodeId"`
@@ -196,6 +216,7 @@ func (a *App) SaveNote(noteID, content string) error {
 // Files
 // ============================================================
 
+// ListFiles returns file records directly linked to a node (non-recursive).
 func (a *App) ListFiles(nodeID string) ([]FileDTO, error) {
 	records, err := a.files.ListByNode(nodeID)
 	if err != nil {
@@ -203,22 +224,105 @@ func (a *App) ListFiles(nodeID string) ([]FileDTO, error) {
 	}
 	result := make([]FileDTO, len(records))
 	for i := range records {
-		isDir := records[i].MIME == "inode/directory"
-		missing := false
+		rec := &records[i]
 		result[i] = FileDTO{
-			ID:      records[i].ID,
-			NodeID:  records[i].NodeID,
-			Name:    records[i].Filename,
-			Path:    records[i].Path,
-			Size:    records[i].Size,
-			Mime:    records[i].MIME,
-			IsDir:   isDir,
-			Missing: missing,
+			ID:      rec.ID,
+			NodeID:  rec.NodeID,
+			Name:    rec.Filename,
+			Path:    rec.Path,
+			Size:    rec.Size,
+			Mime:    rec.MIME,
+			IsDir:   rec.MIME == "inode/directory",
+			Missing: rec.Missing,
 		}
 	}
 	return result, nil
 }
 
+// ListItems returns children of a node for the file tree view.
+// Folders can be expanded; files include their file record info.
+func (a *App) ListItems(nodeID string) ([]FileTreeItemDTO, error) {
+	children, err := a.nodes.ListChildren(nodeID, false)
+	if err != nil {
+		return nil, err
+	}
+	result := make([]FileTreeItemDTO, 0, len(children))
+	for i := range children {
+		if children[i].Type != nodes.TypeFolder && children[i].Type != nodes.TypeFile {
+			continue
+		}
+		item := FileTreeItemDTO{
+			ID:   children[i].ID,
+			Name: children[i].Title,
+			Type: children[i].Type,
+		}
+		if children[i].Type == nodes.TypeFolder {
+			// Check if this folder has children
+			kids, _ := a.nodes.ListChildren(children[i].ID, false)
+			item.HasKids = len(kids) > 0
+		} else if children[i].Type == nodes.TypeFile {
+			records, _ := a.files.ListByNode(children[i].ID)
+			if len(records) > 0 {
+				item.FileID = records[0].ID
+				item.Size = records[0].Size
+				item.Mime = records[0].MIME
+			}
+		}
+		result = append(result, item)
+	}
+	return result, nil
+}
+
+func (a *App) AddPathCopy(nodeID, sourcePath string) ([]NodeDTO, error) {
+	nodes, err := a.files.AddPathCopy(nodeID, sourcePath)
+	if err != nil {
+		return nil, err
+	}
+	return toNodeDTOs(nodes), nil
+}
+
+func (a *App) AddPathLink(nodeID, sourcePath string) ([]NodeDTO, error) {
+	nodes, err := a.files.AddPathLink(nodeID, sourcePath)
+	if err != nil {
+		return nil, err
+	}
+	return toNodeDTOs(nodes), nil
+}
+
+func (a *App) DeleteFileOrFolder(nodeID string) error {
+	return a.files.DeleteNodeAndChildren(nodeID)
+}
+
+func (a *App) CreateEmptyFile(parentID, filename string) (*NodeDTO, error) {
+	node, err := a.files.CreateEmptyFile(parentID, filename)
+	if err != nil {
+		return nil, err
+	}
+	dto := toNodeDTO(node)
+	return &dto, nil
+}
+
+func (a *App) DuplicateNode(nodeID string) (*NodeDTO, error) {
+	node, err := a.files.Duplicate(nodeID)
+	if err != nil {
+		return nil, err
+	}
+	dto := toNodeDTO(node)
+	return &dto, nil
+}
+
+func (a *App) RenameNode(nodeID, newTitle string) error {
+	return a.nodes.UpdateTitle(nodeID, newTitle)
+}
+
+func (a *App) MoveNode(nodeID, newParentID string) error {
+	return a.nodes.Move(nodeID, newParentID, 0)
+}
+
+func (a *App) PreviewImport(sourcePath string) (*files.ImportSummary, error) {
+	return a.files.PreviewImport(sourcePath)
+}
+
 // ============================================================
 // Actions
 // ============================================================
@@ -296,14 +400,27 @@ func (a *App) CreateWorklog(nodeID, summary string, minutes int) (*WorklogDTO, e
 }
 
 // ============================================================
-// Search (stubs — search service not wired yet)
+// Search
 // ============================================================
 
 func (a *App) Search(query string) ([]SearchResultDTO, error) {
 	if strings.TrimSpace(query) == "" {
 		return []SearchResultDTO{}, nil
 	}
-	return []SearchResultDTO{}, nil
+	results, err := a.search.Search(query)
+	if err != nil {
+		return nil, err
+	}
+	out := make([]SearchResultDTO, len(results))
+	for i, r := range results {
+		out[i] = SearchResultDTO{
+			NodeID:  r.NodeID,
+			Title:   r.Title,
+			Snippet: r.Snippet,
+			Type:    r.Type,
+		}
+	}
+	return out, nil
 }
 
 // ============================================================
@@ -333,11 +450,27 @@ func (a *App) PickDirectory() (string, error) {
 // ============================================================
 
 func (a *App) OpenFile(fileID string) error {
-	return fmt.Errorf("not implemented: %s", fileID)
+	return a.files.Open(fileID)
+}
+
+func (a *App) ReadFileText(fileID string) (string, error) {
+	return a.files.ReadText(fileID)
+}
+
+func (a *App) GetFileBase64(fileID string) (string, error) {
+	return a.files.ReadBase64(fileID)
 }
 
 func (a *App) OpenFolder(nodeID string) error {
-	cmd := exec.Command("xdg-open", a.vault)
+	n, err := a.nodes.GetActive(nodeID)
+	if err != nil {
+		return fmt.Errorf("get node: %w", err)
+	}
+	dir := filepath.Join(a.vault, "spaces", n.Slug)
+	if _, err := os.Stat(dir); os.IsNotExist(err) {
+		dir = a.vault
+	}
+	cmd := exec.Command("xdg-open", dir)
 	return cmd.Run()
 }
 
@@ -377,7 +510,4 @@ func toNodeDTOs(list []nodes.Node) []NodeDTO {
 	return result
 }
 
-var (
-	_ = os.Getenv
-	_ = exec.Command
-)
+

cmd/verstak-gui/frontend-dist/assets/index-ClxkTvdE.css

@@ -1 +0,0 @@
-.svelte-14ysusk.svelte-14ysusk,.svelte-14ysusk.svelte-14ysusk:before,.svelte-14ysusk.svelte-14ysusk:after{box-sizing:border-box;margin:0;padding:0}.app.svelte-14ysusk.svelte-14ysusk{display:flex;width:100vw;height:100vh;overflow:hidden;background:#13131f;color:#e4e4ef;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px}.sidebar.svelte-14ysusk.svelte-14ysusk{width:260px;min-width:200px;height:100vh;display:flex;flex-direction:column;background:#1a1a28;border-right:1px solid #2a2a3c;flex-shrink:0;overflow:hidden}.sidebar-top.svelte-14ysusk.svelte-14ysusk{padding:16px 20px;display:flex;align-items:center;gap:10px;border-bottom:1px solid #2a2a3c;flex-shrink:0}.logo.svelte-14ysusk.svelte-14ysusk{font-size:20px;line-height:1}.app-name.svelte-14ysusk.svelte-14ysusk{font-size:16px;font-weight:600;color:#e4e4ef}.sidebar-nav.svelte-14ysusk.svelte-14ysusk{flex:1;overflow-y:auto;padding:12px 0}.nav-group.svelte-14ysusk.svelte-14ysusk{margin-bottom:16px}.nav-label.svelte-14ysusk.svelte-14ysusk{font-size:10px;text-transform:uppercase;letter-spacing:.5px;color:#666;padding:4px 20px;margin-bottom:4px}.nav-item.svelte-14ysusk.svelte-14ysusk{display:block;width:100%;padding:8px 20px;border:none;background:none;color:#ccc;font-size:13px;text-align:left;cursor:pointer;border-radius:0;font-family:inherit}.nav-item.svelte-14ysusk.svelte-14ysusk:hover{background:#223}.nav-item.selected.svelte-14ysusk.svelte-14ysusk{background:#2a2a4a;color:#fff;font-weight:500}.nav-empty.svelte-14ysusk.svelte-14ysusk{padding:8px 20px;color:#555;font-size:12px}.sidebar-bottom.svelte-14ysusk.svelte-14ysusk{padding:12px 20px;border-top:1px solid #2a2a3c;flex-shrink:0}.version.svelte-14ysusk.svelte-14ysusk{font-size:11px;color:#555}.main.svelte-14ysusk.svelte-14ysusk{flex:1;display:flex;flex-direction:column;height:100vh;min-width:0;overflow:hidden;background:#13131f}.header.svelte-14ysusk.svelte-14ysusk{padding:12px 24px;border-bottom:1px solid #2a2a3c;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;min-height:48px}.crumb.svelte-14ysusk.svelte-14ysusk{font-size:14px;font-weight:500;color:#e4e4ef}.crumb.placeholder.svelte-14ysusk.svelte-14ysusk{color:#666}.search-hint.svelte-14ysusk.svelte-14ysusk{padding:6px 12px;background:#1e1e2e;border:1px solid #2a2a3c;border-radius:4px;color:#666;font-size:12px;cursor:text}.error-banner.svelte-14ysusk.svelte-14ysusk{background:#3a2222;color:#f88;padding:8px 24px;font-size:12px;border-bottom:1px solid #4a2222;flex-shrink:0}.content.svelte-14ysusk.svelte-14ysusk{flex:1;overflow-y:auto;padding:24px}.welcome.svelte-14ysusk h2.svelte-14ysusk{font-size:28px;font-weight:300;margin-bottom:12px;color:#8888a4}.welcome.svelte-14ysusk p.svelte-14ysusk{color:#666;font-size:13px;margin-bottom:4px}.error-text.svelte-14ysusk.svelte-14ysusk{color:#f88;margin-top:12px}.loading.svelte-14ysusk.svelte-14ysusk{color:#666}.node-view.svelte-14ysusk h2.svelte-14ysusk{font-size:24px;margin-bottom:16px}.node-meta.svelte-14ysusk.svelte-14ysusk{display:flex;gap:16px;color:#666;font-size:12px}

cmd/verstak-gui/frontend-dist/index.html

@@ -16,8 +16,8 @@
       background: #13131f;
     }
   </style>
-  <script type="module" crossorigin src="/assets/index-COs6tJEl.js"></script>
-  <link rel="stylesheet" crossorigin href="/assets/index-ClxkTvdE.css">
+  <script type="module" crossorigin src="/assets/main-a-M2pafQ.js"></script>
+  <link rel="stylesheet" crossorigin href="/assets/main-6cuAgDnH.css">
 </head>
 <body>
   <div id="app"></div>

cmd/verstak-gui/main.go

@@ -43,13 +43,12 @@ func main() {
 
 	// Init core services
 	nodeRepo := nodes.NewRepository(db)
-	fileSvc := files.NewService(db, abs)
+	fileSvc := files.NewService(db, abs, nodeRepo)
 	noteSvc := notes.NewService(db, abs, nodeRepo, fileSvc)
 	actionSvc := actions.NewService(db)
 	worklogSvc := worklog.NewService(db)
 	searchSvc := search.NewService(db)
 	plugins.NewManager(abs).Discover()
-	_ = searchSvc
 
 	app := &App{
 		db:      db,
@@ -58,6 +57,7 @@ func main() {
 		notes:   noteSvc,
 		actions: actionSvc,
 		worklog: worklogSvc,
+		search:  searchSvc,
 		vault:   abs,
 	}
 
@@ -72,7 +72,10 @@ func main() {
 			Assets: assets,
 		},
 		OnStartup: app.startup,
-		Bind:      []interface{}{app},
+		DragAndDrop: &options.DragAndDrop{
+			EnableFileDrop: true,
+		},
+		Bind: []interface{}{app},
 	})
 
 	if err != nil {

frontend/src/FileTreeRow.svelte

@@ -0,0 +1,346 @@
+<script>
+  import { createEventDispatcher } from 'svelte'
+  import FileIcon from './lib/FileIcon.svelte'
+  import { formatFileSize, formatMimeType, getFileKind } from './lib/fileUtils.js'
+
+  export let item
+  export let selected = false
+  export let onDragStart
+  export let onDragOver
+  export let onDrop
+
+  const dispatch = createEventDispatcher()
+
+  const kind = getFileKind(item)
+  const isFolder = item.type === 'folder'
+  let menuOpen = false
+  let clickTimer = null
+
+  function handleClick(e) {
+    if (e.ctrlKey || e.metaKey) {
+      dispatch('toggleSelect', item.id)
+    } else if (e.shiftKey) {
+      dispatch('rangeSelect', item.id)
+    } else {
+      if (clickTimer) {
+        clearTimeout(clickTimer)
+        clickTimer = null
+        // Double click
+        if (isFolder) {
+          dispatch('navigate', item.id)
+        } else {
+          dispatch('preview', item)
+        }
+      } else {
+        clickTimer = setTimeout(() => {
+          clickTimer = null
+          // Single click: select
+          if (selected) {
+            // Already selected: navigate/preview
+            if (isFolder) {
+              dispatch('navigate', item.id)
+            } else {
+              dispatch('preview', item)
+            }
+          } else {
+            dispatch('selectOne', item.id)
+          }
+        }, 250)
+      }
+    }
+  }
+
+  function handleKeydown(e) {
+    if (e.key === 'Enter') {
+      if (isFolder) {
+        dispatch('navigate', item.id)
+      } else {
+        dispatch('preview', item)
+      }
+    }
+  }
+
+  function handleOpenExternal() {
+    dispatch('openExternal', item.fileId)
+  }
+
+  function handleDelete() {
+    dispatch('delete', { id: item.id, type: item.type })
+  }
+
+  function handleRename() {
+    menuOpen = false
+    dispatch('rename', { id: item.id, name: item.name })
+  }
+
+  function handleDuplicate() {
+    menuOpen = false
+    dispatch('duplicate', item.id)
+  }
+
+  function handleCut() {
+    menuOpen = false
+    dispatch('cut', item.id)
+  }
+
+  function handleCopy() {
+    menuOpen = false
+    dispatch('copy', item.id)
+  }
+
+  function toggleMenu() {
+    menuOpen = !menuOpen
+  }
+
+  function closeMenu() {
+    menuOpen = false
+  }
+
+  function handleDragStart(e) {
+    if (onDragStart) onDragStart(e, item.id)
+  }
+
+  function handleDragOver(e) {
+    if (onDragOver && isFolder) onDragOver(e, item.id)
+  }
+
+  function handleDrop(e) {
+    if (onDrop && isFolder) onDrop(e, item.id)
+  }
+</script>
+
+<svelte:window on:click={closeMenu}/>
+
+<div class="file-row"
+     class:file-row--selected={selected}
+     class:file-row--dragover={false}
+     role="button"
+     tabindex="0"
+     draggable="true"
+     on:click={handleClick}
+     on:keydown={handleKeydown}
+     on:dragstart={handleDragStart}
+     on:dragover={handleDragOver}
+     on:drop={handleDrop}
+     aria-label={isFolder ? `Folder ${item.name}` : `File ${item.name}`}>
+  <div class="file-row-icon">
+    <FileIcon {kind} size={22}/>
+  </div>
+  <div class="file-row-body">
+    <div class="file-row-name" title={item.name}>{item.name}</div>
+    <div class="file-row-meta">
+      {#if isFolder}
+        <span>Folder</span>
+      {:else}
+        <span>{formatFileSize(item.size)}</span>
+        {#if item.mime}
+          <span class="meta-sep">·</span>
+          <span>{formatMimeType(item.mime)}</span>
+        {/if}
+      {/if}
+    </div>
+  </div>
+  <div class="file-row-actions">
+    {#if !isFolder}
+      <button class="action-btn" on:click|stopPropagation={() => dispatch('preview', item)} title="Preview" aria-label="Preview">
+        <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+          <path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"/>
+          <circle cx="12" cy="12" r="3"/>
+        </svg>
+      </button>
+      <button class="action-btn" on:click|stopPropagation={handleOpenExternal} title="Open in external program" aria-label="Open externally">
+        <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+          <path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6"/>
+          <polyline points="15 3 21 3 21 9"/>
+          <line x1="10" y1="14" x2="21" y2="3"/>
+        </svg>
+      </button>
+    {:else}
+      <button class="action-btn" on:click|stopPropagation={() => dispatch('navigate', item.id)} title="Open folder" aria-label="Open folder">
+        <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+          <path d="M22 19a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h5l2 3h9a2 2 0 0 1 2 2z"/>
+          <line x1="9" y1="14" x2="15" y2="14"/>
+        </svg>
+      </button>
+    {/if}
+    <button class="action-btn" on:click|stopPropagation={toggleMenu} title="More actions" aria-label="More actions" aria-expanded={menuOpen}>
+      <svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor">
+        <circle cx="12" cy="5" r="2"/>
+        <circle cx="12" cy="12" r="2"/>
+        <circle cx="12" cy="19" r="2"/>
+      </svg>
+    </button>
+    <button class="action-btn action-btn-danger" on:click|stopPropagation={handleDelete} title="Delete" aria-label="Delete">
+      <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+        <polyline points="3 6 5 6 21 6"/>
+        <path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/>
+      </svg>
+    </button>
+  </div>
+</div>
+
+{#if menuOpen}
+  <!-- svelte-ignore a11y-click-events-have-key-events -->
+  <div class="menu-backdrop" on:click|stopPropagation={closeMenu} role="presentation"></div>
+  <div class="menu" on:click|stopPropagation role="menu">
+    <button class="menu-item" on:click={handleRename} role="menuitem">Rename</button>
+    <button class="menu-item" on:click={handleDuplicate} role="menuitem">Duplicate</button>
+    <button class="menu-item" on:click={handleCut} role="menuitem">Cut</button>
+    <button class="menu-item" on:click={handleCopy} role="menuitem">Copy</button>
+  </div>
+{/if}
+
+<style>
+  .file-row {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    padding: 8px 12px;
+    border-radius: 6px;
+    cursor: default;
+    transition: background 0.12s;
+    min-height: 52px;
+    user-select: none;
+  }
+
+  .file-row:hover {
+    background: #1e1e30;
+  }
+
+  .file-row--selected {
+    background: #1e1e3a;
+    outline: 1px solid #3a3a6c;
+  }
+
+  .file-row--selected:hover {
+    background: #252545;
+  }
+
+  .file-row:focus-visible {
+    outline: 2px solid #5588ff;
+    outline-offset: -2px;
+  }
+
+  .file-row-icon {
+    flex-shrink: 0;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 32px;
+    height: 32px;
+    color: #888;
+  }
+
+  .file-row-body {
+    flex: 1;
+    min-width: 0;
+    display: flex;
+    flex-direction: column;
+    gap: 2px;
+  }
+
+  .file-row-name {
+    font-size: 13px;
+    color: #ddd;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    line-height: 1.3;
+  }
+
+  .file-row-meta {
+    display: flex;
+    align-items: center;
+    gap: 4px;
+    font-size: 11px;
+    color: #666;
+  }
+
+  .meta-sep {
+    color: #444;
+  }
+
+  .file-row-actions {
+    display: flex;
+    gap: 2px;
+    align-items: center;
+    opacity: 0;
+    transition: opacity 0.15s ease;
+    flex-shrink: 0;
+  }
+
+  .file-row:hover .file-row-actions {
+    opacity: 1;
+  }
+
+  .action-btn {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 28px;
+    height: 28px;
+    border: none;
+    border-radius: 4px;
+    background: transparent;
+    color: #666;
+    cursor: pointer;
+    transition: background 0.12s, color 0.12s;
+  }
+
+  .action-btn:hover {
+    background: #2a2a3c;
+    color: #ccc;
+  }
+
+  .action-btn-danger:hover {
+    background: #3a2222;
+    color: #ff6b6b;
+  }
+
+  .action-btn:focus-visible {
+    outline: 2px solid #5588ff;
+    outline-offset: 1px;
+  }
+
+  .menu-backdrop {
+    position: fixed;
+    inset: 0;
+    z-index: 99;
+  }
+
+  .menu {
+    position: absolute;
+    right: 12px;
+    margin-top: 4px;
+    background: #1a1a28;
+    border: 1px solid #2a2a3c;
+    border-radius: 6px;
+    padding: 4px;
+    z-index: 100;
+    min-width: 140px;
+    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
+  }
+
+  .menu-item {
+    display: block;
+    width: 100%;
+    padding: 6px 12px;
+    border: none;
+    background: transparent;
+    color: #ccc;
+    font-size: 12px;
+    text-align: left;
+    cursor: pointer;
+    border-radius: 4px;
+    font-family: inherit;
+  }
+
+  .menu-item:hover {
+    background: #2a2a3c;
+  }
+
+  .menu-item:focus-visible {
+    outline: 2px solid #5588ff;
+    outline-offset: 1px;
+  }
+</style>

frontend/src/api/verstak.js

@@ -1,43 +1,43 @@
-// Wails v2 API wrapper — single frontend access point to Go backend
+// Wails v2 API wrapper — uses generated bindings from wailsjs/go/main/App.js
+import * as App from '../wailsjs/go/main/App.js'
 
-function wailsCall(method, ...args) {
-  if (window.go && window.go.main && window.go.main.App) {
-    return window.go.main.App[method](...args)
-  }
-  return Promise.reject(new Error('Wails bindings not loaded'))
-}
+// Re-export all methods
+export const listSections = () => App.ListSections()
+export const listNodesBySection = (section) => App.ListNodesBySection(section)
+export const listChildren = (parentID) => App.ListChildren(parentID)
+export const getNodeDetail = (id) => App.GetNodeDetail(id)
+export const createNode = (parentID, type, title, section) => App.CreateNode(parentID, type, title, section)
+export const deleteNode = (id) => App.DeleteNode(id)
 
-// Sections
-export const listSections = () => wailsCall('ListSections')
+export const listNotes = (nodeID) => App.ListNotes(nodeID)
+export const createNote = (parentID, title) => App.CreateNote(parentID, title)
+export const readNote = (noteID) => App.ReadNote(noteID)
+export const saveNote = (noteID, content) => App.SaveNote(noteID, content)
 
-// Nodes
-export const listNodesBySection = (section) => wailsCall('ListNodesBySection', section)
-export const listChildren = (parentID) => wailsCall('ListChildren', parentID)
-export const getNodeDetail = (id) => wailsCall('GetNodeDetail', id)
-export const createNode = (parentID, type, title, section) =>
-  wailsCall('CreateNode', parentID, type, title, section)
-export const deleteNode = (id) => wailsCall('DeleteNode', id)
+export const listFiles = (nodeID) => App.ListFiles(nodeID)
+export const listItems = (nodeID) => App.ListItems(nodeID)
+export const addPathCopy = (nodeID, sourcePath) => App.AddPathCopy(nodeID, sourcePath)
+export const addPathLink = (nodeID, sourcePath) => App.AddPathLink(nodeID, sourcePath)
+export const deleteFileOrFolder = (nodeID) => App.DeleteFileOrFolder(nodeID)
+export const previewImport = (sourcePath) => App.PreviewImport(sourcePath)
+export const pickFile = () => App.PickFile()
+export const pickFiles = () => App.PickFiles()
+export const pickDirectory = () => App.PickDirectory()
+export const openFile = (id) => App.OpenFile(id)
+export const readFileText = (id) => App.ReadFileText(id)
+export const getFileBase64 = (id) => App.GetFileBase64(id)
+export const createEmptyFile = (parentID, filename) => App.CreateEmptyFile(parentID, filename)
+export const duplicateNode = (nodeID) => App.DuplicateNode(nodeID)
+export const renameNode = (nodeID, newTitle) => App.RenameNode(nodeID, newTitle)
+export const moveNode = (nodeID, newParentID) => App.MoveNode(nodeID, newParentID)
+export const openFolder = (nodeID) => App.OpenFolder(nodeID)
 
-// Notes
-export const listNotes = (nodeID) => wailsCall('ListNotes', nodeID)
-export const createNote = (parentID, title) => wailsCall('CreateNote', parentID, title)
-export const readNote = (noteID) => wailsCall('ReadNote', noteID)
-export const saveNote = (noteID, content) => wailsCall('SaveNote', noteID, content)
+export const listActions = (nodeID) => App.ListActions(nodeID)
+export const runAction = (id) => App.RunAction(id)
 
-// Files
-export const listFiles = (nodeID) => wailsCall('ListFiles', nodeID)
+export const listWorklog = (nodeID) => App.ListWorklog(nodeID)
+export const createWorklog = (nodeID, summary, minutes) => App.CreateWorklog(nodeID, summary, minutes)
 
-// Actions
-export const listActions = (nodeID) => wailsCall('ListActions', nodeID)
-export const runAction = (id) => wailsCall('RunAction', id)
+export const search = (query) => App.Search(query)
 
-// Worklog
-export const listWorklog = (nodeID) => wailsCall('ListWorklog', nodeID)
-export const createWorklog = (nodeID, summary, minutes) =>
-  wailsCall('CreateWorklog', nodeID, summary, minutes)
-
-// Search
-export const search = (query) => wailsCall('Search', query)
-
-// System
-export const verstakVersion = () => wailsCall('VerstakVersion')
+export const verstakVersion = () => App.VerstakVersion()

frontend/src/lib/ConfirmModal.svelte

@@ -0,0 +1,101 @@
+<script>
+  export let title = 'Подтверждение'
+  export let message = ''
+  export let confirmText = 'Удалить'
+  export let cancelText = 'Отмена'
+  export let danger = false
+
+  import { createEventDispatcher } from 'svelte'
+  const dispatch = createEventDispatcher()
+</script>
+
+<div class="overlay" on:click|self={() => dispatch('cancel')} role="dialog" aria-modal="true" aria-label={title}>
+  <div class="modal">
+    <h3>{title}</h3>
+    <p class="message">{message}</p>
+    <div class="actions">
+      <button class="btn {danger ? 'btn-danger' : 'btn-primary'}" on:click={() => dispatch('confirm')}>{confirmText}</button>
+      <button class="btn" on:click={() => dispatch('cancel')}>{cancelText}</button>
+    </div>
+  </div>
+</div>
+
+<style>
+  .overlay {
+    position: fixed;
+    inset: 0;
+    background: rgba(0, 0, 0, 0.6);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: 200;
+  }
+
+  .modal {
+    background: #1a1a28;
+    border: 1px solid #2a2a3c;
+    border-radius: 12px;
+    padding: 24px;
+    width: 360px;
+    max-width: 90vw;
+  }
+
+  h3 {
+    font-size: 18px;
+    margin-bottom: 12px;
+    color: #e4e4ef;
+  }
+
+  .message {
+    font-size: 14px;
+    color: #aaa;
+    margin-bottom: 20px;
+    line-height: 1.4;
+  }
+
+  .actions {
+    display: flex;
+    gap: 8px;
+    justify-content: flex-end;
+  }
+
+  .btn {
+    padding: 8px 16px;
+    border: 1px solid #2a2a3c;
+    background: #1a1a28;
+    color: #ccc;
+    border-radius: 6px;
+    cursor: pointer;
+    font-size: 13px;
+    font-family: inherit;
+  }
+
+  .btn:hover {
+    background: #222233;
+  }
+
+  .btn-primary {
+    background: #6366f1;
+    border-color: #6366f1;
+    color: #fff;
+  }
+
+  .btn-primary:hover {
+    background: #4f46e5;
+  }
+
+  .btn-danger {
+    background: #dc2626;
+    border-color: #dc2626;
+    color: #fff;
+  }
+
+  .btn-danger:hover {
+    background: #b91c1c;
+  }
+
+  .btn:focus-visible {
+    outline: 2px solid #5588ff;
+    outline-offset: 1px;
+  }
+</style>

frontend/src/lib/FileActions.svelte

@@ -0,0 +1,85 @@
+<script>
+  import { createEventDispatcher } from 'svelte'
+
+  export let isFolder = false
+  export let fileId = ''
+  export let nodeId = ''
+
+  const dispatch = createEventDispatcher()
+
+  function handleOpen() {
+    if (isFolder) {
+      dispatch('openFolder', nodeId)
+    } else {
+      dispatch('open', fileId)
+    }
+  }
+
+  function handleDelete() {
+    dispatch('delete', nodeId)
+  }
+</script>
+
+<div class="file-actions">
+  <button class="action-btn" on:click={handleOpen} title={isFolder ? 'Open folder' : 'Open file'} aria-label={isFolder ? 'Open folder' : 'Open file'}>
+    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+      {#if isFolder}
+        <path d="M22 19a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h5l2 3h9a2 2 0 0 1 2 2z"/>
+        <line x1="9" y1="14" x2="15" y2="14"/>
+      {:else}
+        <path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6"/>
+        <polyline points="15 3 21 3 21 9"/>
+        <line x1="10" y1="14" x2="21" y2="3"/>
+      {/if}
+    </svg>
+  </button>
+  <button class="action-btn action-btn-danger" on:click={handleDelete} title="Delete" aria-label="Delete">
+    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+      <polyline points="3 6 5 6 21 6"/>
+      <path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/>
+    </svg>
+  </button>
+</div>
+
+<style>
+  .file-actions {
+    display: flex;
+    gap: 2px;
+    align-items: center;
+    opacity: 0;
+    transition: opacity 0.15s ease;
+  }
+
+  :global(.file-row:hover) .file-actions {
+    opacity: 1;
+  }
+
+  .action-btn {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 28px;
+    height: 28px;
+    border: none;
+    border-radius: 4px;
+    background: transparent;
+    color: #666;
+    cursor: pointer;
+    transition: background 0.12s, color 0.12s;
+  }
+
+  .action-btn:hover {
+    background: #2a2a3c;
+    color: #ccc;
+  }
+
+  .action-btn-danger:hover {
+    background: #3a2222;
+    color: #ff6b6b;
+  }
+
+  .action-btn:focus-visible {
+    outline: 2px solid #5588ff;
+    outline-offset: 1px;
+  }
+</style>

frontend/src/lib/FileBreadcrumbs.svelte

@@ -0,0 +1,69 @@
+<script>
+  import { createEventDispatcher } from 'svelte'
+
+  export let crumbs = []
+
+  const dispatch = createEventDispatcher()
+
+  function navigateTo(index) {
+    dispatch('navigate', index)
+  }
+</script>
+
+<nav class="breadcrumbs">
+  {#each crumbs as crumb, i}
+    {#if i > 0}
+      <span class="sep">/</span>
+    {/if}
+    {#if i === crumbs.length - 1}
+      <span class="crumb crumb--current">{crumb.name}</span>
+    {:else}
+      <button class="crumb crumb--link" on:click={() => navigateTo(i)}>{crumb.name}</button>
+    {/if}
+  {/each}
+</nav>
+
+<style>
+  .breadcrumbs {
+    display: flex;
+    align-items: center;
+    gap: 4px;
+    padding: 8px 0;
+    font-size: 13px;
+    color: #999;
+  }
+
+  .sep {
+    color: #444;
+  }
+
+  .crumb {
+    font-size: 13px;
+  }
+
+  .crumb--current {
+    color: #ccc;
+  }
+
+  .crumb--link {
+    background: none;
+    border: none;
+    padding: 2px 4px;
+    color: #888;
+    cursor: pointer;
+    border-radius: 3px;
+    font-family: inherit;
+    font-size: 13px;
+    transition: color 0.12s, background 0.12s;
+  }
+
+  .crumb--link:hover {
+    color: #ccc;
+    background: #1e1e30;
+  }
+
+  .crumb--link:focus-visible {
+    outline: 2px solid #5588ff;
+    outline-offset: 1px;
+  }
+</style>

frontend/src/lib/FileIcon.svelte

@@ -0,0 +1,63 @@
+<script>
+  export let kind = 'generic'
+  export let size = 20
+</script>
+
+<svg width={size} height={size} viewBox="0 0 24 24" fill="none" stroke="currentColor"
+     stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg">
+  {#if kind === 'folder'}
+    <path d="M22 19a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h5l2 3h9a2 2 0 0 1 2 2z"/>
+  {:else if kind === 'image'}
+    <rect x="3" y="3" width="18" height="18" rx="2" ry="2"/>
+    <circle cx="8.5" cy="8.5" r="1.5"/>
+    <polyline points="21 15 16 10 5 21"/>
+  {:else if kind === 'video'}
+    <rect x="2" y="4" width="20" height="16" rx="2"/>
+    <polyline points="10 9 16 12 10 15 10 9"/>
+  {:else if kind === 'audio'}
+    <path d="M9 18V5l12-2v13"/>
+    <circle cx="6" cy="18" r="3"/>
+    <circle cx="18" cy="16" r="3"/>
+  {:else if kind === 'pdf'}
+    <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/>
+    <polyline points="14 2 14 8 20 8"/>
+    <line x1="8" y1="12" x2="16" y2="12"/>
+    <line x1="8" y1="16" x2="16" y2="16"/>
+    <line x1="8" y1="14" x2="12" y2="14"/>
+  {:else if kind === 'document'}
+    <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/>
+    <polyline points="14 2 14 8 20 8"/>
+    <line x1="16" y1="13" x2="8" y2="13"/>
+    <line x1="16" y1="17" x2="8" y2="17"/>
+  {:else if kind === 'spreadsheet'}
+    <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/>
+    <polyline points="14 2 14 8 20 8"/>
+    <line x1="8" y1="12" x2="16" y2="12"/>
+    <line x1="8" y1="16" x2="16" y2="16"/>
+    <line x1="8" y1="14" x2="12" y2="14"/>
+    <line x1="12" y1="12" x2="12" y2="18"/>
+  {:else if kind === 'presentation'}
+    <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/>
+    <polyline points="14 2 14 8 20 8"/>
+    <line x1="9" y1="12" x2="15" y2="12"/>
+    <line x1="9" y1="15" x2="13" y2="15"/>
+    <line x1="12" y1="15" x2="12" y2="18"/>
+  {:else if kind === 'archive'}
+    <path d="M21 8v13a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8"/>
+    <polyline points="7 3 12 8 17 3"/>
+    <line x1="3" y1="8" x2="21" y2="8"/>
+    <rect x="10" y="12" width="4" height="4" rx="1"/>
+  {:else if kind === 'code'}
+    <polyline points="16 18 22 12 16 6"/>
+    <polyline points="8 6 2 12 8 18"/>
+  {:else if kind === 'text'}
+    <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/>
+    <polyline points="14 2 14 8 20 8"/>
+    <line x1="16" y1="13" x2="8" y2="13"/>
+    <line x1="16" y1="17" x2="8" y2="17"/>
+    <polyline points="10 9 9 9 8 9"/>
+  {:else}
+    <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/>
+    <polyline points="14 2 14 8 20 8"/>
+  {/if}
+</svg>

frontend/src/lib/FilePreviewModal.svelte

@@ -0,0 +1,262 @@
+<script>
+  import { createEventDispatcher, onMount, onDestroy } from 'svelte'
+  import FileIcon from './FileIcon.svelte'
+  import { formatFileSize, formatMimeType, getFileKind, isImageFile, isTextFile, isPdfFile, isMarkdownFile } from './fileUtils.js'
+
+  export let item
+  export let content = '' // base64 data URI or text content
+  export let loading = false
+  export let error = ''
+
+  const dispatch = createEventDispatcher()
+
+  const kind = getFileKind(item)
+  $: showImage = isImageFile(item) && content && content.startsWith('data:')
+  $: showText = isTextFile(item) || isMarkdownFile(item)
+  $: showPdf = isPdfFile(item)
+
+  function handleKeydown(e) {
+    if (e.key === 'Escape') {
+      dispatch('close')
+    }
+  }
+
+  function handleOpenExternal() {
+    dispatch('openExternal', item.fileId)
+  }
+
+  onMount(() => {
+    window.addEventListener('keydown', handleKeydown)
+  })
+
+  onDestroy(() => {
+    window.removeEventListener('keydown', handleKeydown)
+  })
+</script>
+
+<div class="overlay" on:click|self={() => dispatch('close')} role="dialog" aria-modal="true" aria-label={`Preview: ${item.name}`}>
+  <div class="modal">
+    <header class="preview-header">
+      <div class="preview-title">
+        <FileIcon {kind} size={18}/>
+        <span class="preview-name" title={item.name}>{item.name}</span>
+      </div>
+      <div class="preview-meta">{formatFileSize(item.size)} · {formatMimeType(item.mime)}</div>
+      <div class="preview-actions">
+        <button class="action-btn" on:click={handleOpenExternal} title="Open in external program" aria-label="Open externally">
+          <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+            <path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6"/>
+            <polyline points="15 3 21 3 21 9"/>
+            <line x1="10" y1="14" x2="21" y2="3"/>
+          </svg>
+        </button>
+        <button class="action-btn action-btn-close" on:click={() => dispatch('close')} title="Close" aria-label="Close preview">
+          <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
+            <line x1="18" y1="6" x2="6" y2="18"/>
+            <line x1="6" y1="6" x2="18" y2="18"/>
+          </svg>
+        </button>
+      </div>
+    </header>
+    <div class="preview-body">
+      {#if loading}
+        <div class="preview-status"><p>Loading preview...</p></div>
+      {:else if error}
+        <div class="preview-status">
+          <p>{error}</p>
+          <button class="btn btn-sm" on:click={handleOpenExternal}>Open in external program</button>
+        </div>
+      {:else if showImage && content}
+        <div class="preview-image-container">
+          <img src={content} alt={item.name} class="preview-image"/>
+        </div>
+      {:else if showText && content}
+        <pre class="preview-text"><code>{content}</code></pre>
+      {:else if showPdf}
+        {#if content && content.startsWith('data:')}
+          <div class="preview-pdf-container">
+            <embed src={content} type="application/pdf" class="preview-pdf"/>
+          </div>
+        {:else}
+          <div class="preview-status">
+            <p>PDF preview is not available in this environment.</p>
+            <button class="btn btn-sm" on:click={handleOpenExternal}>Open in external program</button>
+          </div>
+        {/if}
+      {:else}
+        <div class="preview-status">
+          <p>Preview is not available for this file type.</p>
+          <button class="btn btn-sm" on:click={handleOpenExternal}>Open in external program</button>
+        </div>
+      {/if}
+    </div>
+  </div>
+</div>
+
+<style>
+  .overlay {
+    position: fixed;
+    inset: 0;
+    background: rgba(0, 0, 0, 0.65);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: 1000;
+  }
+
+  .modal {
+    background: #14141f;
+    border: 1px solid #2a2a3c;
+    border-radius: 10px;
+    width: 90vw;
+    max-width: 900px;
+    height: 85vh;
+    max-height: 700px;
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
+  }
+
+  .preview-header {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    padding: 12px 16px;
+    border-bottom: 1px solid #2a2a3c;
+    flex-shrink: 0;
+  }
+
+  .preview-title {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    color: #ddd;
+    font-size: 14px;
+    min-width: 0;
+  }
+
+  .preview-name {
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .preview-meta {
+    font-size: 11px;
+    color: #666;
+    margin-left: auto;
+    white-space: nowrap;
+  }
+
+  .preview-actions {
+    display: flex;
+    gap: 4px;
+    flex-shrink: 0;
+    margin-left: 8px;
+  }
+
+  .action-btn {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 30px;
+    height: 30px;
+    border: none;
+    border-radius: 4px;
+    background: transparent;
+    color: #666;
+    cursor: pointer;
+    transition: background 0.12s, color 0.12s;
+  }
+
+  .action-btn:hover {
+    background: #2a2a3c;
+    color: #ccc;
+  }
+
+  .action-btn:focus-visible {
+    outline: 2px solid #5588ff;
+    outline-offset: 1px;
+  }
+
+  .action-btn-close {
+    color: #ff6b6b;
+  }
+
+  .action-btn-close:hover {
+    background: #3a2222;
+    color: #ff4444;
+  }
+
+  .preview-body {
+    flex: 1;
+    overflow: auto;
+    min-height: 0;
+  }
+
+  .preview-status {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    gap: 12px;
+    padding: 48px 24px;
+    color: #888;
+    font-size: 14px;
+  }
+
+  .preview-image-container {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    padding: 16px;
+    min-height: 200px;
+    background: #0e0e18;
+  }
+
+  .preview-image {
+    max-width: 100%;
+    max-height: calc(85vh - 100px);
+    object-fit: contain;
+    border-radius: 4px;
+  }
+
+  .preview-text {
+    margin: 0;
+    padding: 16px;
+    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
+    font-size: 12px;
+    line-height: 1.5;
+    color: #ccc;
+    white-space: pre-wrap;
+    word-wrap: break-word;
+    overflow: auto;
+  }
+
+  .preview-pdf-container {
+    width: 100%;
+    height: 100%;
+  }
+
+  .preview-pdf {
+    width: 100%;
+    height: 100%;
+    border: none;
+  }
+
+  .btn-sm {
+    padding: 6px 14px;
+    border: 1px solid #2a2a3c;
+    background: #1a1a28;
+    color: #ccc;
+    border-radius: 6px;
+    cursor: pointer;
+    font-size: 12px;
+    font-family: inherit;
+    transition: background 0.12s;
+  }
+
+  .btn-sm:hover {
+    background: #222233;
+  }
+</style>

frontend/src/lib/fileUtils.js

@@ -0,0 +1,114 @@
+export function formatFileSize(bytes) {
+  if (bytes == null || bytes < 0) return '—'
+  if (bytes === 0) return '0 B'
+  const units = ['B', 'KB', 'MB', 'GB']
+  const i = Math.min(Math.floor(Math.log(bytes) / Math.log(1024)), units.length - 1)
+  const val = bytes / Math.pow(1024, i)
+  return (i === 0 ? val.toFixed(0) : val.toFixed(1)) + ' ' + units[i]
+}
+
+const mimeLabels = {
+  'image/jpeg': 'JPEG image',
+  'image/png': 'PNG image',
+  'image/gif': 'GIF image',
+  'image/webp': 'WebP image',
+  'image/svg+xml': 'SVG image',
+  'image/bmp': 'BMP image',
+  'image/tiff': 'TIFF image',
+  'image/avif': 'AVIF image',
+  'application/pdf': 'PDF document',
+  'application/msword': 'Word document',
+  'application/vnd.openxmlformats-officedocument.wordprocessingml.document': 'Word document',
+  'application/vnd.ms-excel': 'Excel spreadsheet',
+  'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': 'Excel spreadsheet',
+  'application/vnd.ms-powerpoint': 'PowerPoint presentation',
+  'application/vnd.openxmlformats-officedocument.presentationml.presentation': 'PowerPoint presentation',
+  'application/zip': 'ZIP archive',
+  'application/gzip': 'GZIP archive',
+  'application/x-tar': 'TAR archive',
+  'application/x-7z-compressed': '7z archive',
+  'application/x-rar-compressed': 'RAR archive',
+  'text/plain': 'Text file',
+  'text/html': 'HTML file',
+  'text/css': 'CSS file',
+  'text/javascript': 'JavaScript file',
+  'application/json': 'JSON file',
+  'application/xml': 'XML file',
+  'application/x-yaml': 'YAML file',
+  'application/octet-stream': 'Binary file',
+  'application/x-msdos-program': 'Executable',
+  'inode/directory': 'Folder',
+}
+
+export function formatMimeType(mime) {
+  if (!mime) return 'Unknown'
+  return mimeLabels[mime] || mime
+}
+
+export function getFileKind(item) {
+  if (item.type === 'folder') return 'folder'
+  const mime = (item.mime || '').toLowerCase()
+  if (mime.startsWith('image/')) return 'image'
+  if (mime.startsWith('video/')) return 'video'
+  if (mime.startsWith('audio/')) return 'audio'
+  if (mime.startsWith('text/')) return 'text'
+  if (mime.includes('pdf')) return 'pdf'
+  if (mime.includes('word') || mime.includes('document')) return 'document'
+  if (mime.includes('spreadsheet') || mime.includes('excel')) return 'spreadsheet'
+  if (mime.includes('presentation') || mime.includes('powerpoint')) return 'presentation'
+  if (mime.includes('zip') || mime.includes('tar') || mime.includes('gzip') || mime.includes('rar') || mime.includes('7z') || mime.includes('compress')) return 'archive'
+  if (mime.includes('json') || mime.includes('xml') || mime.includes('yaml') || mime.includes('javascript') || mime.includes('css') || mime.includes('html')) return 'code'
+  const name = (item.name || '').toLowerCase()
+  const ext = name.split('.').pop()
+  const codeExts = ['js','ts','jsx','tsx','vue','svelte','py','rs','go','c','cpp','h','hpp','java','kt','swift','rb','php','pl','sh','bash','zsh','fish','yml','yaml','json','xml','toml','ini','cfg','conf','md','markdown','css','scss','less','sass','sql','graphql','proto','gradle','cmake','makefile','dockerfile','env','gitignore']
+  if (codeExts.includes(ext)) return 'code'
+  return 'generic'
+}
+
+const imageMimes = ['image/jpeg','image/png','image/gif','image/webp','image/bmp','image/tiff','image/avif','image/svg+xml']
+const textMimes = ['text/plain','text/html','text/css','text/javascript','application/json','application/xml','application/x-yaml','text/x-shellscript']
+const codeNames = ['txt','log','conf','ini','yaml','yml','json','xml','csv','sh','py','js','ts','css','html','md','markdown','cfg']
+
+const imageExts = ['jpg','jpeg','png','gif','webp','bmp','tiff','tif','avif','svg']
+
+export function canPreviewFile(item) {
+  if (item.type === 'folder') return false
+  const mime = (item.mime || '').toLowerCase()
+  const name = (item.name || '').toLowerCase()
+  const ext = name.split('.').pop()
+  if (imageMimes.includes(mime) || imageExts.includes(ext)) return true
+  if (mime.includes('pdf')) return true
+  if (textMimes.includes(mime) || codeNames.includes(ext)) return true
+  return false
+}
+
+export function isImageFile(item) {
+  const mime = (item.mime || '').toLowerCase()
+  const name = (item.name || '').toLowerCase()
+  const ext = name.split('.').pop()
+  return imageMimes.includes(mime) || imageExts.includes(ext)
+}
+
+export function isTextFile(item) {
+  const mime = (item.mime || '').toLowerCase()
+  const name = (item.name || '').toLowerCase()
+  const ext = name.split('.').pop()
+  return textMimes.includes(mime) || (codeNames.includes(ext) && ext !== 'md' && ext !== 'markdown')
+}
+
+export function isPdfFile(item) {
+  return (item.mime || '').toLowerCase().includes('pdf')
+}
+
+export function isMarkdownFile(item) {
+  const name = (item.name || '').toLowerCase()
+  return name.endsWith('.md') || name.endsWith('.markdown')
+}
+
+export function needsBase64Preview(item) {
+  return isImageFile(item) || isPdfFile(item)
+}
+
+export function needsTextPreview(item) {
+  return isTextFile(item) || isMarkdownFile(item)
+}

frontend/src/wailsjs/go/main/App.js

@@ -0,0 +1,107 @@
+// @ts-check
+// Wails v2 generated bindings — auto-generated by wails build
+// Manual version for go build -tags gui
+
+export function ListSections() {
+    return window['go']['main']['App']['ListSections']();
+}
+
+export function ListNodesBySection(arg1) {
+    return window['go']['main']['App']['ListNodesBySection'](arg1);
+}
+
+export function ListChildren(arg1) {
+    return window['go']['main']['App']['ListChildren'](arg1);
+}
+
+export function GetNodeDetail(arg1) {
+    return window['go']['main']['App']['GetNodeDetail'](arg1);
+}
+
+export function CreateNode(arg1, arg2, arg3, arg4) {
+    return window['go']['main']['App']['CreateNode'](arg1, arg2, arg3, arg4);
+}
+
+export function DeleteNode(arg1) {
+    return window['go']['main']['App']['DeleteNode'](arg1);
+}
+
+export function ListNotes(arg1) {
+    return window['go']['main']['App']['ListNotes'](arg1);
+}
+
+export function CreateNote(arg1, arg2) {
+    return window['go']['main']['App']['CreateNote'](arg1, arg2);
+}
+
+export function ReadNote(arg1) {
+    return window['go']['main']['App']['ReadNote'](arg1);
+}
+
+export function SaveNote(arg1, arg2) {
+    return window['go']['main']['App']['SaveNote'](arg1, arg2);
+}
+
+export function ListFiles(arg1) {
+    return window['go']['main']['App']['ListFiles'](arg1);
+}
+
+export function AddPathCopy(arg1, arg2) {
+    return window['go']['main']['App']['AddPathCopy'](arg1, arg2);
+}
+
+export function AddPathLink(arg1, arg2) {
+    return window['go']['main']['App']['AddPathLink'](arg1, arg2);
+}
+
+export function DeleteFileOrFolder(arg1) {
+    return window['go']['main']['App']['DeleteFileOrFolder'](arg1);
+}
+
+export function PreviewImport(arg1) {
+    return window['go']['main']['App']['PreviewImport'](arg1);
+}
+
+export function ListActions(arg1) {
+    return window['go']['main']['App']['ListActions'](arg1);
+}
+
+export function RunAction(arg1) {
+    return window['go']['main']['App']['RunAction'](arg1);
+}
+
+export function ListWorklog(arg1) {
+    return window['go']['main']['App']['ListWorklog'](arg1);
+}
+
+export function CreateWorklog(arg1, arg2, arg3) {
+    return window['go']['main']['App']['CreateWorklog'](arg1, arg2, arg3);
+}
+
+export function Search(arg1) {
+    return window['go']['main']['App']['Search'](arg1);
+}
+
+export function PickFile() {
+    return window['go']['main']['App']['PickFile']();
+}
+
+export function PickFiles() {
+    return window['go']['main']['App']['PickFiles']();
+}
+
+export function PickDirectory() {
+    return window['go']['main']['App']['PickDirectory']();
+}
+
+export function OpenFile(arg1) {
+    return window['go']['main']['App']['OpenFile'](arg1);
+}
+
+export function OpenFolder(arg1) {
+    return window['go']['main']['App']['OpenFolder'](arg1);
+}
+
+export function VerstakVersion() {
+    return window['go']['main']['App']['VerstakVersion']();
+}

frontend/vite.config.js

@@ -1,15 +1,22 @@
 import { defineConfig } from "vite";
 import { svelte } from "@sveltejs/vite-plugin-svelte";
+import { resolve } from "path";
 
 export default defineConfig({
+  plugins: [svelte()],
   server: {
     host: "127.0.0.1",
     port: 3001,
     strictPort: true,
   },
-  plugins: [svelte()],
   build: {
     outDir: "dist",
     emptyOutDir: true,
+    rollupOptions: {
+      input: {
+        main: resolve(__dirname, "index.html"),
+      },
+    },
   },
+  publicDir: "public",
 });

internal/core/files/file.go

@@ -3,6 +3,7 @@ package files
 import (
 	"crypto/sha256"
 	"database/sql"
+	"encoding/base64"
 	"fmt"
 	"io"
 	"os"
@@ -12,6 +13,7 @@ import (
 	"strings"
 	"time"
 
+	"verstak/internal/core/nodes"
 	"verstak/internal/core/storage"
 	"verstak/internal/core/util"
 )
@@ -32,15 +34,25 @@ type Record struct {
 	Missing     bool       `json:"missing"`
 }
 
+// ImportSummary describes a scanned directory before import.
+type ImportSummary struct {
+	Files        int    `json:"files"`
+	Folders      int    `json:"folders"`
+	TotalBytes   int64  `json:"totalBytes"`
+	IsDangerous  bool   `json:"isDangerous"`
+	DangerReason string `json:"dangerReason,omitempty"`
+}
+
 // Service provides file operations inside a vault.
 type Service struct {
 	db        *storage.DB
 	vaultRoot string
+	nodes     *nodes.Repository
 }
 
 // NewService creates a file service bound to a vault.
-func NewService(db *storage.DB, vaultRoot string) *Service {
-	return &Service{db: db, vaultRoot: vaultRoot}
+func NewService(db *storage.DB, vaultRoot string, nodeRepo *nodes.Repository) *Service {
+	return &Service{db: db, vaultRoot: vaultRoot, nodes: nodeRepo}
 }
 
 // DB returns the underlying storage.
@@ -166,6 +178,280 @@ func (s *Service) Open(id string) error {
 	return openWithSystem(abs)
 }
 
+// maxPreviewSize is the maximum file size (5 MB) for inline preview.
+const maxPreviewSize = 5 * 1024 * 1024
+
+// ReadText reads a file's content as text, up to maxPreviewSize.
+func (s *Service) ReadText(id string) (string, error) {
+	rec, err := s.Get(id)
+	if err != nil {
+		return "", err
+	}
+	if rec.Size > maxPreviewSize {
+		return "", fmt.Errorf("file too large for preview (%d bytes)", rec.Size)
+	}
+	var abs string
+	if rec.StorageMode == "vault" {
+		abs = filepath.Join(s.vaultRoot, rec.Path)
+	} else {
+		abs = rec.Path
+	}
+	b, err := os.ReadFile(abs)
+	if err != nil {
+		return "", fmt.Errorf("read: %w", err)
+	}
+	return string(b), nil
+}
+
+// ReadBase64 reads a file and returns a data URI (base64-encoded).
+func (s *Service) ReadBase64(id string) (string, error) {
+	rec, err := s.Get(id)
+	if err != nil {
+		return "", err
+	}
+	if rec.Size > maxPreviewSize {
+		return "", fmt.Errorf("file too large for preview (%d bytes)", rec.Size)
+	}
+	var abs string
+	if rec.StorageMode == "vault" {
+		abs = filepath.Join(s.vaultRoot, rec.Path)
+	} else {
+		abs = rec.Path
+	}
+	b, err := os.ReadFile(abs)
+	if err != nil {
+		return "", fmt.Errorf("read: %w", err)
+	}
+	mime := rec.MIME
+	if mime == "" {
+		mime = "application/octet-stream"
+	}
+	return fmt.Sprintf("data:%s;base64,%s", mime, base64.StdEncoding.EncodeToString(b)), nil
+}
+
+// CreateEmptyFile creates a file node and an empty vault file.
+func (s *Service) CreateEmptyFile(parentID, filename string) (*nodes.Node, error) {
+	filename = s.uniqueTitle(parentID, filename)
+	node, err := s.nodes.Create(parentID, nodes.TypeFile, filename, "")
+	if err != nil {
+		return nil, err
+	}
+	dir := filepath.Join(s.vaultRoot, "spaces", node.Slug)
+	if err := os.MkdirAll(dir, 0o750); err != nil {
+		return nil, fmt.Errorf("mkdir: %w", err)
+	}
+	dest := filepath.Join(dir, filename)
+	f, err := os.Create(dest)
+	if err != nil {
+		return nil, fmt.Errorf("create file: %w", err)
+	}
+	f.Close()
+	relPath, _ := filepath.Rel(s.vaultRoot, dest)
+	_, err = s.insertRecord(node.ID, filename, relPath, "vault", 0, "")
+	return node, err
+}
+
+// Duplicate creates a copy of a node and its file record under the same parent.
+func (s *Service) Duplicate(nodeID string) (*nodes.Node, error) {
+	original, err := s.nodes.GetActive(nodeID)
+	if err != nil {
+		return nil, err
+	}
+	parentID := ""
+	if original.ParentID != nil {
+		parentID = *original.ParentID
+	}
+	newName := s.uniqueTitle(parentID, original.Title)
+	node, err := s.nodes.Create(parentID, original.Type, newName, original.Section)
+	if err != nil {
+		return nil, err
+	}
+	if original.Type == nodes.TypeFile {
+		records, _ := s.ListByNode(original.ID)
+		if len(records) > 0 {
+			src := &records[0]
+			if src.StorageMode == "vault" {
+				srcPath := filepath.Join(s.vaultRoot, src.Path)
+				dir := filepath.Join(s.vaultRoot, "spaces", node.Slug)
+				os.MkdirAll(dir, 0o750)
+				dst := filepath.Join(dir, newName)
+				hash, err := copyAndHash(srcPath, dst)
+				if err != nil {
+					return nil, fmt.Errorf("copy file: %w", err)
+				}
+				relPath, _ := filepath.Rel(s.vaultRoot, dst)
+				_, err = s.insertRecord(node.ID, newName, relPath, "vault", src.Size, hash)
+				if err != nil {
+					return nil, err
+				}
+			} else {
+				// External file: create a new record pointing to the same absolute path.
+				_, err = s.insertRecord(node.ID, newName, src.Path, "external", src.Size, src.SHA256)
+				if err != nil {
+					return nil, err
+				}
+			}
+		}
+	}
+	return node, nil
+}
+
+// AddPathCopy copies sourcePath (file or directory) into the vault under nodeID.
+func (s *Service) AddPathCopy(nodeID, sourcePath string) ([]nodes.Node, error) {
+	return s.importPath(nodeID, sourcePath, true)
+}
+
+// AddPathLink links sourcePath (file or directory) without copying into vault.
+func (s *Service) AddPathLink(nodeID, sourcePath string) ([]nodes.Node, error) {
+	return s.importPath(nodeID, sourcePath, false)
+}
+
+// PreviewImport scans sourcePath and returns a summary without importing.
+func (s *Service) PreviewImport(sourcePath string) (*ImportSummary, error) {
+	info, err := os.Stat(sourcePath)
+	if err != nil {
+		return nil, fmt.Errorf("stat: %w", err)
+	}
+	if !info.IsDir() {
+		return &ImportSummary{Files: 1, TotalBytes: info.Size()}, nil
+	}
+
+	var sum ImportSummary
+	err = filepath.Walk(sourcePath, func(path string, fi os.FileInfo, err error) error {
+		if err != nil {
+			return filepath.SkipDir
+		}
+		if fi.IsDir() {
+			sum.Folders++
+			name := strings.ToLower(fi.Name())
+			if name == ".git" || name == "node_modules" || name == ".cache" {
+				sum.IsDangerous = true
+				sum.DangerReason = fmt.Sprintf("содержит %s", fi.Name())
+			}
+			return nil
+		}
+		sum.Files++
+		sum.TotalBytes += fi.Size()
+		return nil
+	})
+	if sum.Files > 1000 && !sum.IsDangerous {
+		sum.IsDangerous = true
+		sum.DangerReason = "более 1000 файлов"
+	}
+	if sum.TotalBytes > 1<<30 && !sum.IsDangerous {
+		sum.IsDangerous = true
+		sum.DangerReason = "более 1 GB"
+	}
+	return &sum, err
+}
+
+// DeleteNodeAndChildren soft-deletes a node and all descendants,
+// moving vault files to trash.
+func (s *Service) DeleteNodeAndChildren(nodeID string) error {
+	children, _ := s.nodes.ListChildren(nodeID, false)
+	for i := range children {
+		if err := s.DeleteNodeAndChildren(children[i].ID); err != nil {
+			return err
+		}
+	}
+	_ = s.deleteFileRecords(nodeID)
+	return s.nodes.SoftDelete(nodeID)
+}
+
+func (s *Service) deleteFileRecords(nodeID string) error {
+	records, err := s.ListByNode(nodeID)
+	if err != nil {
+		return err
+	}
+	for _, r := range records {
+		_ = s.DeleteToTrash(r.ID)
+	}
+	return nil
+}
+
+func (s *Service) importPath(parentID, sourcePath string, copyMode bool) ([]nodes.Node, error) {
+	info, err := os.Stat(sourcePath)
+	if err != nil {
+		return nil, fmt.Errorf("stat: %w", err)
+	}
+	if !info.IsDir() {
+		title := s.uniqueTitle(parentID, filepath.Base(sourcePath))
+		node, err := s.nodes.Create(parentID, nodes.TypeFile, title, "")
+		if err != nil {
+			return nil, err
+		}
+		if copyMode {
+			_, err = s.CopyIntoVault(node.ID, sourcePath, node.Slug)
+		} else {
+			_, err = s.AddExternal(node.ID, sourcePath)
+		}
+		if err != nil {
+			return nil, err
+		}
+		return []nodes.Node{*node}, nil
+	}
+	return s.importDir(parentID, sourcePath, info.Name(), copyMode)
+}
+
+func (s *Service) importDir(parentID, sourcePath, dirName string, copyMode bool) ([]nodes.Node, error) {
+	dirName = s.uniqueTitle(parentID, dirName)
+	folderNode, err := s.nodes.Create(parentID, nodes.TypeFolder, dirName, "")
+	if err != nil {
+		return nil, err
+	}
+
+	entries, err := os.ReadDir(sourcePath)
+	if err != nil {
+		return nil, err
+	}
+
+	var all []nodes.Node
+	all = append(all, *folderNode)
+
+	for _, entry := range entries {
+		childPath := filepath.Join(sourcePath, entry.Name())
+		if entry.IsDir() {
+			children, err := s.importDir(folderNode.ID, childPath, entry.Name(), copyMode)
+			if err != nil {
+				return nil, err
+			}
+			all = append(all, children...)
+		} else {
+			childNode, err := s.nodes.Create(folderNode.ID, nodes.TypeFile, entry.Name(), "")
+			if err != nil {
+				return nil, err
+			}
+			if copyMode {
+				_, err = s.CopyIntoVault(childNode.ID, childPath, childNode.Slug)
+			} else {
+				_, err = s.AddExternal(childNode.ID, childPath)
+			}
+			if err != nil {
+				return nil, err
+			}
+			all = append(all, *childNode)
+		}
+	}
+	return all, nil
+}
+
+func (s *Service) uniqueTitle(parentID, desired string) string {
+	children, _ := s.nodes.ListChildren(parentID, false)
+	used := make(map[string]bool, len(children))
+	for i := range children {
+		used[children[i].Title] = true
+	}
+	if !used[desired] {
+		return desired
+	}
+	for n := 2; ; n++ {
+		c := fmt.Sprintf("%s (%d)", desired, n)
+		if !used[c] {
+			return c
+		}
+	}
+}
+
 // --- implementation details ---
 
 func (s *Service) insertRecord(nodeID, filename, path, mode string, size int64, sha string) (*Record, error) {

internal/core/files/file_test.go

@@ -5,6 +5,7 @@ import (
 	"path/filepath"
 	"testing"
 
+	"verstak/internal/core/nodes"
 	"verstak/internal/core/storage"
 )
 
@@ -23,7 +24,7 @@ func TestAddExternal(t *testing.T) {
 	db := openTestDB(t)
 	// Run migration 002 manually since storage.Open already applied it.
 	// We can verify the table exists by inserting.
-	filesSvc := NewService(db, t.TempDir())
+	filesSvc := NewService(db, t.TempDir(), nodes.NewRepository(db))
 
 	// Create a real temp file to register.
 	tmpDir := t.TempDir()
@@ -62,7 +63,7 @@ func TestAddExternal(t *testing.T) {
 func TestCopyIntoVault(t *testing.T) {
 	db := openTestDB(t)
 	vaultRoot := t.TempDir()
-	svc := NewService(db, vaultRoot)
+	svc := NewService(db, vaultRoot, nodes.NewRepository(db))
 
 	// Source file.
 	srcDir := t.TempDir()
@@ -88,7 +89,7 @@ func TestCopyIntoVault(t *testing.T) {
 
 func TestListByNode(t *testing.T) {
 	db := openTestDB(t)
-	svc := NewService(db, t.TempDir())
+	svc := NewService(db, t.TempDir(), nodes.NewRepository(db))
 
 	os.WriteFile(filepath.Join(t.TempDir(), "a.txt"), []byte("a"), 0o640)
 	f1 := filepath.Join(t.TempDir(), "a1.txt")
@@ -111,7 +112,7 @@ func TestListByNode(t *testing.T) {
 func TestDeleteToTrash(t *testing.T) {
 	db := openTestDB(t)
 	vaultRoot := t.TempDir()
-	svc := NewService(db, vaultRoot)
+	svc := NewService(db, vaultRoot, nodes.NewRepository(db))
 
 	src := filepath.Join(t.TempDir(), "important.pdf")
 	os.WriteFile(src, []byte("important data"), 0o640)
@@ -140,6 +141,170 @@ func TestDeleteToTrash(t *testing.T) {
 	}
 }
 
+func TestAddPathCopySingleFile(t *testing.T) {
+	db := openTestDB(t)
+	vaultRoot := t.TempDir()
+	nodeRepo := nodes.NewRepository(db)
+	svc := NewService(db, vaultRoot, nodeRepo)
+
+	parent, _ := nodeRepo.Create("", "case", "Test Case", "")
+	src := filepath.Join(t.TempDir(), "doc.pdf")
+	os.WriteFile(src, []byte("file content"), 0o640)
+
+	nodes, err := svc.AddPathCopy(parent.ID, src)
+	if err != nil {
+		t.Fatalf("AddPathCopy: %v", err)
+	}
+	if len(nodes) != 1 {
+		t.Fatalf("got %d nodes, want 1", len(nodes))
+	}
+	if nodes[0].Type != "file" {
+		t.Errorf("type = %q", nodes[0].Type)
+	}
+	// Source intact.
+	if _, err := os.Stat(src); err != nil {
+		t.Error("source should remain intact")
+	}
+	// File record created.
+	records, _ := svc.ListByNode(nodes[0].ID)
+	if len(records) != 1 {
+		t.Errorf("file records = %d", len(records))
+	}
+}
+
+func TestAddPathLinkSingleFile(t *testing.T) {
+	db := openTestDB(t)
+	vaultRoot := t.TempDir()
+	nodeRepo := nodes.NewRepository(db)
+	svc := NewService(db, vaultRoot, nodeRepo)
+
+	parent, _ := nodeRepo.Create("", "case", "Test Case", "")
+	src := filepath.Join(t.TempDir(), "linked.pdf")
+	os.WriteFile(src, []byte("linked"), 0o640)
+
+	nodes, err := svc.AddPathLink(parent.ID, src)
+	if err != nil {
+		t.Fatalf("AddPathLink: %v", err)
+	}
+	if len(nodes) != 1 {
+		t.Fatalf("got %d nodes, want 1", len(nodes))
+	}
+	// File record should have external storage mode.
+	records, _ := svc.ListByNode(nodes[0].ID)
+	if len(records) != 1 {
+		t.Fatalf("file records = %d", len(records))
+	}
+	if records[0].StorageMode != "external" {
+		t.Errorf("storage mode = %q, want external", records[0].StorageMode)
+	}
+}
+
+func TestAddPathCopyDirectory(t *testing.T) {
+	db := openTestDB(t)
+	vaultRoot := t.TempDir()
+	nodeRepo := nodes.NewRepository(db)
+	svc := NewService(db, vaultRoot, nodeRepo)
+
+	parent, _ := nodeRepo.Create("", "case", "Test Case", "")
+	srcDir := t.TempDir()
+	os.MkdirAll(filepath.Join(srcDir, "sub"), 0o750)
+	os.WriteFile(filepath.Join(srcDir, "a.txt"), []byte("a"), 0o640)
+	os.WriteFile(filepath.Join(srcDir, "sub", "b.txt"), []byte("bb"), 0o640)
+
+	nodes, err := svc.AddPathCopy(parent.ID, srcDir)
+	if err != nil {
+		t.Fatalf("AddPathCopy dir: %v", err)
+	}
+	// Should create: folder node + file node + sub folder node + file node in sub.
+	if len(nodes) < 3 {
+		t.Errorf("expected 3+ nodes, got %d", len(nodes))
+	}
+	// Verify structure: root folder + children.
+	var folders, files int
+	for i := range nodes {
+		if nodes[i].Type == "folder" {
+			folders++
+		} else {
+			files++
+		}
+	}
+	if folders < 1 {
+		t.Error("expected at least 1 folder")
+	}
+	if files < 1 {
+		t.Error("expected at least 1 file")
+	}
+}
+
+func TestDeleteNodeAndChildren(t *testing.T) {
+	db := openTestDB(t)
+	vaultRoot := t.TempDir()
+	nodeRepo := nodes.NewRepository(db)
+	svc := NewService(db, vaultRoot, nodeRepo)
+
+	parent, _ := nodeRepo.Create("", "case", "To Delete", "")
+	child, _ := nodeRepo.Create(parent.ID, "file", "child.txt", "")
+	// Add file record to child.
+	src := filepath.Join(t.TempDir(), "child.txt")
+	os.WriteFile(src, []byte("data"), 0o640)
+	svc.CopyIntoVault(child.ID, src, child.Slug)
+
+	if err := svc.DeleteNodeAndChildren(parent.ID); err != nil {
+		t.Fatalf("DeleteNodeAndChildren: %v", err)
+	}
+	// Parent should be soft-deleted.
+	if _, err := nodeRepo.GetActive(parent.ID); err == nil {
+		t.Error("parent should be deleted")
+	}
+	// Child should be soft-deleted.
+	if _, err := nodeRepo.GetActive(child.ID); err == nil {
+		t.Error("child should be deleted")
+	}
+}
+
+func TestNameConflict(t *testing.T) {
+	db := openTestDB(t)
+	vaultRoot := t.TempDir()
+	nodeRepo := nodes.NewRepository(db)
+	svc := NewService(db, vaultRoot, nodeRepo)
+
+	parent, _ := nodeRepo.Create("", "case", "Test", "")
+	src := filepath.Join(t.TempDir(), "conflict.pdf")
+	os.WriteFile(src, []byte("data"), 0o640)
+
+	// Import twice with same filename.
+	n1, _ := svc.AddPathCopy(parent.ID, src)
+	n2, _ := svc.AddPathCopy(parent.ID, src)
+	if n1[0].Title == n2[0].Title {
+		t.Error("expected unique name on conflict")
+	}
+	if n2[0].Title == "conflict.pdf" {
+		t.Errorf("title unchanged = %q", n2[0].Title)
+	}
+}
+
+func TestPreviewImportDir(t *testing.T) {
+	db := openTestDB(t)
+	vaultRoot := t.TempDir()
+	svc := NewService(db, vaultRoot, nodes.NewRepository(db))
+
+	srcDir := t.TempDir()
+	os.MkdirAll(filepath.Join(srcDir, "sub"), 0o750)
+	os.WriteFile(filepath.Join(srcDir, "f1.txt"), []byte("hello"), 0o640)
+	os.WriteFile(filepath.Join(srcDir, "f2.txt"), []byte("world"), 0o640)
+
+	sum, err := svc.PreviewImport(srcDir)
+	if err != nil {
+		t.Fatalf("PreviewImport: %v", err)
+	}
+	if sum.Files != 2 {
+		t.Errorf("files = %d, want 2", sum.Files)
+	}
+	if sum.Folders != 2 { // root + sub
+		t.Errorf("folders = %d, want 2", sum.Folders)
+	}
+}
+
 func TestGuessMIME(t *testing.T) {
 	cases := map[string]string{
 		"a.md":    "text/plain",

internal/core/notes/note_test.go

@@ -21,7 +21,7 @@ func setupService(t *testing.T) (*Service, *nodes.Repository, string) {
 	t.Cleanup(func() { db.Close() })
 
 	nodeRepo := nodes.NewRepository(db)
-	fileSvc := files.NewService(db, dir)
+	fileSvc := files.NewService(db, dir, nodeRepo)
 	svc := NewService(db, dir, nodeRepo, fileSvc)
 	return svc, nodeRepo, dir
 }

internal/gui/server.go

@@ -38,7 +38,7 @@ type Server struct {
 // NewServer creates a GUI server for the given vault.
 func NewServer(db *storage.DB, vaultRoot string) *Server {
 	nodeRepo := nodes.NewRepository(db)
-	fileSvc := files.NewService(db, vaultRoot)
+	fileSvc := files.NewService(db, vaultRoot, nodeRepo)
 	noteSvc := notes.NewService(db, vaultRoot, nodeRepo, fileSvc)
 	actionSvc := actions.NewService(db)
 	workSvc := worklog.NewService(db)