Cache previews in server RAM for much faster access (they are about 70kB each).

README.md

@@ -8,7 +8,7 @@ This is a cutting-edge **file and document server** designed for speed, efficien
 
 **Built-in document and media previews** let you quickly view files without downloading them. Cista shows PDF and other documents, video and image thumbnails, with **HDR10 support** video previews and image formats, including HEIC and AVIF. It also has a player for music and video files.
 
-The Cista project started as an inevitable remake of [Droppy](https://github.com/droppyjs/droppy) which we used and loved despite its numerous bugs. Cista Storage stands out in handling even the most exotic filenames, ensuring a smooth experience where others falter.
+The Cista project started as an inevitable remake of [Droppy](https://github.com/droppyjs/droppy) which was not being developed at the time. Now they have picked up pace too, feel free to try both and compare.
 
 All of this is wrapped in an intuitive interface with automatic light and dark themes, making Cista Storage the ideal choice for anyone seeking a reliable, versatile, and quick file storage solution. Quickly setup your own Cista where your files are just a click away, safe, and always accessible.
 
@@ -40,9 +40,13 @@ The server remembers its settings in the config folder (default `~/.local/share/
 
 ## Authentication
 
-Cista supports three authentication modes:
+Cista supports two authenticatioon mode, each of which supporting ordinary and privileged users. Either one can be combined with the public mode.
 
-### Built-in Authentication (default)
+### Public Mode
+
+In public mode, anyone can read, send and even delete files without without logging in. Users entering the service won't be asked to authenticate. Privileged users can still log in via the menu to access admin settings, from where the public mode can be toggled on or off.
+
+### Built-in Password Authentication (default)
 
 User accounts are managed directly by Cista. Create users with the `--user` flag:
 
@@ -53,23 +57,26 @@ uvx cista --user guest               # Create regular user
 
 Privileged users can manage other users and change settings via the Admin Settings menu.
 
-### Public Mode
+### Passkey Authentication and SSO
 
-In public mode, anyone can read, send and even delete files without without logging in. Privileged users can still log in via the menu to access admin settings, from where the public mode can be toggled on or off.
+For centralized authentication, Cista can integrate with [Paskia](https://git.zi.fi/LeoVasanko/paskia) SSO server. This allows user account and permission management at the corporate level, without bothering Cista with it.
 
-### Paskia SSO Authentication
+Set the `PASKIA_BACKEND_URL` environment variable:
-
-For centralized authentication, Cista can integrate with [Paskia](https://git.zi.fi/LeoVasanko/paskia) SSO server. Set the `PASKIA_BACKEND_URL` environment variable:
 
 ```fish
 PASKIA_BACKEND_URL=http://localhost:4401 uvx cista
 ```
 
+Run the Paskia backend on the same machine (to use that default URL):
+```fish
+uvx paskia
+```
+
 In Paskia mode:
 - All `/auth/*` requests are proxied to the Paskia backend
+- Cista backend verifies access by `/auth/api/validate` endpoint and shows a login dialog if needed
 - Users with `cista:login` permission can access files
 - Users with `cista:admin` permission get privileged access (Admin Settings)
-- Public mode works with Paskia: unauthenticated users can browse, while the menu has option to login
 
 ### Internet Access
 
@@ -89,9 +96,15 @@ Nxing or other proxy may be similarly used, or alternatively you can place cert
 
 This setup allows easy addition of storages, each with its own domain, configuration, and files.
 
-Assuming a restricted user account `storage` for serving files and that UV is installed system-wide or on this account. Only UV is required: this does not use git or bun/npm.
+Assuming a restricted user account `storage` for serving files and that UV is installed system-wide or on this account. Only UV is required: this does not use git or javascript runtimes.
 
-Create `/etc/systemd/system/cista@.service`:
+Create (edit) a systemd unit:
+
+```fish
+sudo systemctl edit --force --full cista@.service
+```
+
+Paste the following:
 
 ```ini
 [Unit]
@@ -101,6 +114,7 @@ Description=Cista storage %i
 User=storage
 ExecStart=uvx cista -c /srv/cista/%i -l /srv/cista/%i/socket /media/storage/%i
 Restart=always
+#Environment=PASKIA_BACKEND_URL=http://localhost:4401
 
 [Install]
 WantedBy=multi-user.target
@@ -153,4 +167,4 @@ Building the package for release (frontend + Python wheel/sdist):
 uv build
 ```
 
-Vue is used to build files in `cista/wwwroot`, included prebuilt in the Python package. `uv build` runs the project build hooks to bundle the frontend and produce a NodeJS-independent Python package.
+Vue is used to build files in `cista/frontend-build`, included prebuilt in the Python package. `uv build` runs the project build hooks to bundle the frontend and produce a NodeJS-independent Python package.

cista/__main__.py

@@ -25,14 +25,22 @@ def create_banner():
 """
 
 
-def create_startup_box(*, folder, url, unix=None, dev=False, paskia_url=None):
+def create_startup_box(
+    *, folder, url, unix=None, dev=False, paskia_url=None, public=False
+):
     """Create a framed startup box with server information."""
     title = f"Cista {cista.__version__}"
     listen = unix if unix else url
     location = f"{folder} @ {listen}"
     lines = [title, location]
+    # Auth line: Paskia <url> or Password, with optional Public suffix
     if paskia_url:
-        lines.append(f"Paskia: {paskia_url}")
+        auth_line = f"Auth: Paskia {paskia_url}"
+    else:
+        auth_line = "Auth: Password"
+    if public:
+        auth_line += ", Public"
+    lines.append(auth_line)
     if dev:
         lines.append("dev mode")
 
@@ -157,6 +165,7 @@ def _main():
         unix=opts.get("unix"),
         dev=dev,
         paskia_url=PASKIA_BACKEND_URL or None,
+        public=config.config.public,
     )
     sys.stderr.write(startup_box)
     # Run the server

cista/api.py

@@ -163,6 +163,17 @@ def subscribe(uuid, ws):
         )
 
 
+@bp.get("config")
+async def get_config(request):
+    await auth.verify(request, privileged=True)
+    return json(
+        {
+            "name": config.config.name,
+            "public": config.config.public,
+        }
+    )
+
+
 @bp.put("config/public")
 async def update_public(request):
     await auth.verify(request, privileged=True)
@@ -176,3 +187,20 @@ async def update_public(request):
         raise BadRequest(str(e)) from None
     config.update_config({"public": public})
     return json({"message": "Public access setting updated", "public": public})
+
+
+@bp.put("config/name")
+async def update_name(request):
+    await auth.verify(request, privileged=True)
+    try:
+        name = request.json["name"]
+        if not isinstance(name, str):
+            raise ValueError("name must be a string")
+    except KeyError:
+        raise BadRequest("Missing name field") from None
+    except ValueError as e:
+        raise BadRequest(str(e)) from None
+    config.update_config({"name": name})
+    # Return the effective name (fallback to path.name if empty)
+    effective_name = name or config.config.path.name
+    return json({"message": "Server name updated", "name": effective_name})

cista/auth.py

@@ -269,7 +269,7 @@ async def verify(request, *, privileged=False):
     raise Unauthorized(
         f"Login required for {request.path}",
         "cookie",
-        context={"auth": {"iframe": "/auth/restricted"}},
+        context={"auth": {"iframe": "/auth/restricted/"}},
         quiet=True,
     )
 
@@ -278,7 +278,7 @@ async def verify(request, *, privileged=False):
 bp = Blueprint("auth", url_prefix="/auth")
 
 
-@bp.get("/restricted")
+@bp.get("/restricted/")
 async def login_page(request):
     """Login page that works both standalone and in paskia iframe."""
     s = session.get(request)

cista/preview.py

@@ -2,7 +2,10 @@ import asyncio
 import gc
 import io
 import mimetypes
+import threading
 import urllib.parse
+from collections import OrderedDict
+from dataclasses import dataclass
 from pathlib import PurePosixPath
 from time import perf_counter
 from urllib.parse import unquote
@@ -25,6 +28,48 @@ pillow_heif.register_heif_opener()
 bp = Blueprint("preview", url_prefix="/preview")
 
 
+@dataclass(slots=True)
+class CachedPreview:
+    """Cached preview with headers and body."""
+    headers: dict[str, str]
+    body: bytes
+
+
+class PreviewCache:
+    """Thread-safe LRU cache for preview responses."""
+
+    def __init__(self, capacity: int = 500):
+        self.capacity = capacity
+        self._cache: OrderedDict[str, CachedPreview] = OrderedDict()
+        self._lock = threading.Lock()
+
+    def get(self, key: str) -> CachedPreview | None:
+        """Get cached preview, moving it to end (most recently used)."""
+        with self._lock:
+            if key in self._cache:
+                self._cache.move_to_end(key)
+                return self._cache[key]
+        return None
+
+    def set(self, key: str, value: CachedPreview) -> None:
+        """Cache preview, evicting oldest if at capacity."""
+        with self._lock:
+            if key in self._cache:
+                self._cache.move_to_end(key)
+            else:
+                if len(self._cache) >= self.capacity:
+                    self._cache.popitem(last=False)
+                self._cache[key] = value
+
+    def __len__(self) -> int:
+        with self._lock:
+            return len(self._cache)
+
+
+# Global preview cache instance
+_preview_cache = PreviewCache(capacity=500)
+
+
 @bp.on_request
 async def verify_preview(request):
     """Verify access to preview routes."""
@@ -55,6 +100,29 @@ async def preview(req, path):
     etag = config.derived_secret(
         "preview", rel, stat.st_mtime_ns, quality, maxsize, maxzoom
     ).hex()
+
+    if req.headers.if_none_match == etag:
+        # The client has it cached, respond 304 Not Modified
+        return empty(304, headers={"etag": etag})
+
+    # Check in-memory cache first (includes headers)
+    cached = _preview_cache.get(etag)
+    if cached is not None:
+        logger.debug(f"Preview cache hit: {rel}")
+        return raw(cached.body, headers=cached.headers)
+
+    if not filepath.is_file():
+        raise NotFound("File not found")
+
+    # Generate preview
+    img = await asyncio.get_event_loop().run_in_executor(
+        req.app.ctx.threadexec, dispatch, filepath, quality, maxsize, maxzoom
+    )
+    if not img:
+        # Preview generation failed, redirect to the file itself
+        return redirect(f"/files/{path}", status=303)
+
+    # Build headers and cache the full response
     savename = PurePosixPath(filepath.name).with_suffix(".avif")
     headers = {
         "etag": etag,
@@ -64,19 +132,8 @@ async def preview(req, path):
         "content-type": "image/avif",
         "content-disposition": f"inline; filename*=UTF-8''{urllib.parse.quote(savename.as_posix())}",
     }
-    if req.headers.if_none_match == etag:
+    _preview_cache.set(etag, CachedPreview(headers=headers, body=img))
-        # The client has it cached, respond 304 Not Modified
-        return empty(304, headers=headers)
 
-    if not filepath.is_file():
-        raise NotFound("File not found")
-
-    img = await asyncio.get_event_loop().run_in_executor(
-        req.app.ctx.threadexec, dispatch, filepath, quality, maxsize, maxzoom
-    )
-    if not img:
-        # Preview generation failed, redirect to the file itself
-        return redirect(f"/files/{path}", status=303)
     return raw(img, headers=headers)
 
 

cista/protocol.py

@@ -146,6 +146,7 @@ class FileEntry(msgspec.Struct, array_like=True, frozen=True):
     key: str
     mtime: int
     size: int
+    allocated: int
     isfile: int
 
     def __str__(self):
@@ -177,5 +178,6 @@ class UpdateMessage(msgspec.Struct):
 class Space(msgspec.Struct):
     disk: int
     free: int
-    usage: int
+    used: int
     storage: int
+    allocated: int

cista/watching.py

@@ -24,7 +24,7 @@ sortkey = natsort_keygen(alg=ns.LOCALE)
 class State:
     def __init__(self):
         self.lock = threading.RLock()
-        self._space = Space(0, 0, 0, 0)
+        self._space = Space(0, 0, 0, 0, 0)
         self.root: list[FileEntry] = []
 
     @property
@@ -148,12 +148,15 @@ def walk(rel: PurePosixPath, stat: stat_result | None = None) -> list[FileEntry]
     try:
         st = stat or path.stat()
         isfile = int(not S_ISDIR(st.st_mode))
+        # st_blocks is in 512-byte units
+        allocated = st.st_blocks * 512 if isfile else 0
         entry = FileEntry(
             level=len(rel.parts),
             name=rel.name,
             key=fuid(st),
             mtime=int(st.st_mtime),
             size=st.st_size if isfile else 0,
+            allocated=allocated,
             isfile=isfile,
         )
         if isfile:
@@ -181,8 +184,9 @@ def walk(rel: PurePosixPath, stat: stat_result | None = None) -> list[FileEntry]
                 level=entry.level,
                 name=entry.name,
                 key=entry.key,
-                size=entry.size + child.size,
                 mtime=max(entry.mtime, child.mtime),
+                size=entry.size + child.size,
+                allocated=entry.allocated + child.allocated,
                 isfile=entry.isfile,
             )
             ret.extend(sub)
@@ -227,7 +231,14 @@ def update_path(rootmod: list[FileEntry], relpath: PurePosixPath, loop):
 def update_space(loop):
     """Called periodically to update the disk usage."""
     du = shutil.disk_usage(rootpath)
-    space = Space(*du, storage=state.root[0].size)
+    root = state.root[0]
+    space = Space(
+        disk=du.total,
+        free=du.free,
+        used=du.used,
+        storage=root.size,
+        allocated=root.allocated,
+    )
     # Update only on difference above 1 MB
     tol = 10**6
     old = msgspec.structs.astuple(state.space)
@@ -504,8 +515,66 @@ class PathIndex:
 
         self.root = new_root
         self._rebuild()
+
+        # Recalculate sizes for ancestor folders (including root)
+        self._recalculate_ancestors(path)
+
         return new_root
 
+    def _recalculate_ancestors(self, path: PurePosixPath):
+        """Recalculate size/allocated for all ancestors of path, including root."""
+        # Build list of ancestors from deepest to root
+        ancestors = []
+        current = path.parent if path.parts else PurePosixPath()
+        while True:
+            ancestors.append(current)
+            if not current.parts:
+                break
+            current = current.parent
+
+        # Process from deepest ancestor to root
+        for ancestor_path in ancestors:
+            if ancestor_path not in self._index:
+                continue
+            start, count = self._index[ancestor_path]
+            if count == 0:
+                continue
+
+            ancestor = self.root[start]
+            if ancestor.isfile:
+                continue  # Files don't aggregate
+
+            # Sum size/allocated of direct children
+            total_size = 0
+            total_allocated = 0
+            i = start + 1
+            while i < start + count:
+                child = self.root[i]
+                if child.level == ancestor.level + 1:
+                    total_size += child.size
+                    total_allocated += child.allocated
+                    # Skip child's subtree
+                    child_path = ancestor_path / child.name
+                    if child_path in self._index:
+                        _, child_count = self._index[child_path]
+                        i += child_count
+                    else:
+                        i += 1
+                else:
+                    i += 1
+
+            # Update ancestor entry if changed
+            if ancestor.size != total_size or ancestor.allocated != total_allocated:
+                self.root[start] = FileEntry(
+                    level=ancestor.level,
+                    name=ancestor.name,
+                    key=ancestor.key,
+                    mtime=ancestor.mtime,
+                    size=total_size,
+                    allocated=total_allocated,
+                    isfile=ancestor.isfile,
+                )
+
 
 def collapse_paths(paths: set[PurePosixPath]) -> set[PurePosixPath]:
     """Remove child paths if parent is in set."""

frontend/src/App.vue

@@ -16,7 +16,7 @@
     <RouterView :path="path.pathList" :query="path.query" />
   </main>
   <footer v-if="store.selected.size || store.uprogress.total || store.dprogress.total">
-    <HeaderSelected :path="path.pathList" />
+    <SelectionToolbar :path="path.pathList" />
     <TransferBar :status=store.uprogress @cancel=store.cancelUploads class=upload />
     <TransferBar :status=store.dprogress @cancel=store.cancelDownloads class=download />
   </footer>
@@ -36,6 +36,7 @@ import type { SortOrder } from './utils/docsort'
 import type SettingsModalVue from './components/SettingsModal.vue'
 import UserManagementModal from './components/UserManagementModal.vue'
 import AccessDeniedModal from './components/AccessDeniedModal.vue'
+import SelectionToolbar from './components/SelectionToolbar.vue'
 
 interface Path {
   path: string

frontend/src/components/DiskSpace.vue

@@ -36,9 +36,9 @@
       </g>
 
       <g ref="labelsRef" class="pie-labels">
-        <text :x="storageInnerPos.x" :y="storageInnerPos.y" class="pie-label-inner" :text-anchor="getSizeAnchor(sectorInfo.storage.angle)" dominant-baseline="middle" :transform="`rotate(${getSizeRotation(sectorInfo.storage.angle)} ${storageInnerPos.x} ${storageInnerPos.y})`">{{ fmtSize(store.space.storage, sectorInfo.storage.angle) }}</text>
+        <text :x="storageInnerPos.x" :y="storageInnerPos.y" class="pie-label-inner" :text-anchor="getSizeAnchor(sectorInfo.storage.angle)" dominant-baseline="middle" :transform="`rotate(${getSizeRotation(sectorInfo.storage.angle)} ${storageInnerPos.x} ${storageInnerPos.y})`">{{ fmtSize(store.space.allocated, sectorInfo.storage.angle) }}</text>
         <text :x="freeInnerPos.x" :y="freeInnerPos.y" class="pie-label-inner" :text-anchor="getSizeAnchor(sectorInfo.free.angle)" dominant-baseline="middle" :transform="`rotate(${getSizeRotation(sectorInfo.free.angle)} ${freeInnerPos.x} ${freeInnerPos.y})`">{{ fmtSize(store.space.free, sectorInfo.free.angle) }}</text>
-        <text :x="otherInnerPos.x" :y="otherInnerPos.y" class="pie-label-inner" :text-anchor="getSizeAnchor(sectorInfo.other.angle)" dominant-baseline="middle" :transform="`rotate(${getSizeRotation(sectorInfo.other.angle)} ${otherInnerPos.x} ${otherInnerPos.y})`">{{ fmtSize(store.space.usage - store.space.storage, sectorInfo.other.angle) }}</text>
+        <text :x="otherInnerPos.x" :y="otherInnerPos.y" class="pie-label-inner" :text-anchor="getSizeAnchor(sectorInfo.other.angle)" dominant-baseline="middle" :transform="`rotate(${getSizeRotation(sectorInfo.other.angle)} ${otherInnerPos.x} ${otherInnerPos.y})`">{{ fmtSize(store.space.used - store.space.allocated, sectorInfo.other.angle) }}</text>
 
         <defs>
           <path :id="storageLabelPath.id" :d="storageLabelPath.d" fill="none" />
@@ -98,7 +98,31 @@ const truncateLabel = (name: string, maxLen = 10): string => {
   return name.slice(0, maxLen - 1) + '…'
 }
 
-const storageName = computed(() => truncateLabel(store.server.name || 'stored'))
+// Calculate max label length based on angular gap to neighbor labels
+const storageMaxLen = computed(() => {
+  const s = store.space
+  if (!s.disk) return 10
+  // Sector spans in degrees
+  const storageSpan = (s.allocated / s.disk) * 360
+  const freeSpan = (s.free / s.disk) * 360
+  const otherSpan = ((s.used - s.allocated) / s.disk) * 360
+  // Angular gap from storage label midpoint to neighbor label midpoints
+  const gapToFree = (storageSpan + freeSpan) / 2
+  const gapToOther = (storageSpan + otherSpan) / 2
+  const minGap = Math.min(gapToFree, gapToOther)
+  // Allow longer names when there's sufficient gap to both neighbors
+  if (minGap > 70) return 18
+  if (minGap > 55) return 14
+  return 10
+})
+
+const storageName = computed(() => {
+  const name = store.server.name || 'stored'
+  const maxLen = storageMaxLen.value
+  // Use full name if it fits within the available space
+  if (name.length <= maxLen) return name
+  return truncateLabel(name, 10)
+})
 
 const TAU = 2 * Math.PI
 
@@ -113,7 +137,7 @@ const CIRC = TAU * midRadius
 const pieStorageDash = computed(() => {
   const s = store.space
   if (!s.disk) return `0 ${CIRC}`
-  return `${(s.storage / s.disk) * CIRC} ${CIRC}`
+  return `${(s.allocated / s.disk) * CIRC} ${CIRC}`
 })
 
 const pieFreeDash = computed(() => {
@@ -125,7 +149,7 @@ const pieFreeDash = computed(() => {
 const pieFreeOffsetVal = computed(() => {
   const s = store.space
   if (!s.disk) return 0
-  return -(s.storage / s.disk) * CIRC
+  return -(s.allocated / s.disk) * CIRC
 })
 
 const freeColor = computed(() => {
@@ -133,8 +157,8 @@ const freeColor = computed(() => {
   if (!s.disk) return '#6c6'
   const freePct = s.free / s.disk
   if (freePct > 0.25) return '#5b5'
-  if (freePct > 0.10) return '#db3'
+  if (freePct > 0.10) return '#ff0'
-  return '#d44'
+  return '#f00'
 })
 
 const PIE_RADIUS = 55
@@ -153,9 +177,9 @@ const sectorInfo = computed(() => {
     other: { angle: 270, pct: 0.25 }
   }
 
-  const storagePct = s.storage / s.disk
+  const storagePct = s.allocated / s.disk
   const freePct = s.free / s.disk
-  const otherPct = (s.usage - s.storage) / s.disk
+  const otherPct = (s.used - s.allocated) / s.disk
 
   const storageAngle = storagePct * 180  // midpoint of storage sector
   const freeStart = storagePct * 360
@@ -229,9 +253,10 @@ const adjustedLabelAngles = computed(() => {
 })
 
 // Arc path for curved text labels (CW for top half, CCW for bottom half)
-const createArcPath = (centerAngle: number, id: string) => {
+const createArcPath = (centerAngle: number, id: string, labelLen: number) => {
   const radius = LABEL_RADIUS
-  const arcSpan = 60
+  // Scale arc span based on label length: ~6° per character, minimum 45°
+  const arcSpan = Math.max(45, labelLen * 6)
   const isBottom = centerAngle > 90 && centerAngle <= 270
   const startAngle = isBottom ? centerAngle + arcSpan / 2 : centerAngle - arcSpan / 2
   const endAngle = isBottom ? centerAngle - arcSpan / 2 : centerAngle + arcSpan / 2
@@ -244,9 +269,9 @@ const createArcPath = (centerAngle: number, id: string) => {
   }
 }
 
-const storageLabelPath = computed(() => createArcPath(adjustedLabelAngles.value.storage!, 'storage'))
+const storageLabelPath = computed(() => createArcPath(adjustedLabelAngles.value.storage!, 'storage', storageName.value.length))
-const freeLabelPath = computed(() => createArcPath(adjustedLabelAngles.value.free!, 'free'))
+const freeLabelPath = computed(() => createArcPath(adjustedLabelAngles.value.free!, 'free', 4))
-const otherLabelPath = computed(() => createArcPath(adjustedLabelAngles.value.other!, 'other'))
+const otherLabelPath = computed(() => createArcPath(adjustedLabelAngles.value.other!, 'other', 5))
 
 const handleClick = () => isExpanded.value ? collapse() : expand()
 

frontend/src/components/FileExplorer.vue

@@ -124,6 +124,7 @@ defineExpose({
       dir: true,
       mtime: now,
       size: 0,
+      allocated: 0,
     })
     store.cursor = editing.value.key
   },

frontend/src/components/FileSize.vue

@@ -1,22 +1,44 @@
 <template>
-  <td class="size right" :class=sizeClass>{{ doc.sizedisp }}</td>
+  <td
+    class="size right"
+    :class="sizeClass"
+    @mouseenter="doc.sparseIndicator && tooltip?.startHover($event)"
+    @mousemove="doc.sparseIndicator && tooltip?.updatePosition($event)"
+    @mouseleave="doc.sparseIndicator && tooltip?.endHover()"
+  >
+    <SparseIndicator :doc="doc" class="before-size" />{{ doc.sizedisp }}
+    <CursorTooltip v-if="doc.sparseIndicator" ref="tooltip" :text="tooltipText">{{ tooltipText }}</CursorTooltip>
+  </td>
 </template>
 
 <script setup lang="ts">
 import { Doc } from '@/repositories/Document'
-import { computed } from 'vue'
+import { computed, ref } from 'vue'
+import { formatSize } from '@/utils'
+import SparseIndicator from './SparseIndicator.vue'
+import CursorTooltip from './CursorTooltip.vue'
+
+const props = defineProps<{
+    doc: Doc
+}>()
+
+const tooltip = ref<InstanceType<typeof CursorTooltip> | null>(null)
 
 const sizeClass = computed(() => {
   const unit = props.doc.sizedisp.split('\u202F').slice(-1)[0]!
   return +unit ? "bytes" : unit
 })
 
-const props = defineProps<{
+const tooltipText = computed(() => {
-    doc: Doc
+  const { size, allocated } = props.doc
-}>()
+  return `${formatSize(allocated)} allocated of ${formatSize(size)}`
+})
 </script>
 
 <style scoped>
+.before-size {
+  margin-right: 0.2em;
+}
 .size.empty { color: #555 }
 .size.bytes { color: #77a }
 .size.kB { color: #474 }

frontend/src/components/Gallery.vue

@@ -67,6 +67,7 @@ defineExpose({
       dir: true,
       mtime: now,
       size: 0,
+      allocated: 0,
     })
     store.cursor = editing.value.key
   },

frontend/src/components/GalleryFigure.vue

@@ -18,7 +18,7 @@
         </template>
         <template v-else>
           <SelectBox :doc=doc @click="store.cursor = doc.key"/>
-          <span>{{ doc.name }}</span>
+          <span>{{ doc.name }}<SparseIndicator :doc="doc" class="after-name" /></span>
           <div class=namespacer></div>
         </template>
       </figcaption>
@@ -26,6 +26,7 @@
     <CursorTooltip ref="tooltip" :text="tooltipText">
       <div class="tooltip-name">{{ doc.name }}</div>
       <div class="tooltip-details">{{ doc.modified }} — {{ doc.sizedisp }}</div>
+      <div v-if="doc.sparseIndicator" class="tooltip-sparse">{{ sparseText }}</div>
     </CursorTooltip>
   </a>
 </template>
@@ -34,8 +35,10 @@
 import { ref, computed } from 'vue'
 import { useMainStore } from '@/stores/main'
 import { Doc } from '@/repositories/Document'
+import { formatSize } from '@/utils'
 import MediaPreview from '@/components/MediaPreview.vue'
 import CursorTooltip from './CursorTooltip.vue'
+import SparseIndicator from './SparseIndicator.vue'
 
 const store = useMainStore()
 type EditingProp = {
@@ -52,6 +55,11 @@ const tooltip = ref<InstanceType<typeof CursorTooltip> | null>(null)
 
 const tooltipText = computed(() => props.doc.key)
 
+const sparseText = computed(() => {
+  const { size, allocated } = props.doc
+  return `${formatSize(allocated)} allocated of ${formatSize(size)}`
+})
+
 const onclick = (ev: Event) => {
   if (m.value!.play()) ev.preventDefault()
   store.cursor = props.doc.key
@@ -66,6 +74,13 @@ const onclick = (ev: Event) => {
 .tooltip-details {
   text-align: center;
 }
+.tooltip-sparse {
+  text-align: center;
+  opacity: 0.8;
+}
+.after-name {
+  margin-left: 0.3em;
+}
 figure {
   max-height: 15em;
   position: relative;

frontend/src/components/HeaderMain.vue

@@ -115,7 +115,7 @@ const settingsMenu = (e: Event) => {
     // Show login option only in public mode (non-public modes trigger auth automatically)
     items.push({ label: '🔐 Login', onClick: async () => {
       try {
-        await showAuthIframe('/auth/restricted#theme=light')
+        await showAuthIframe('/auth/restricted/#theme=light')
         resumeWatching()
       } catch (e) {
         console.log('Login cancelled')
@@ -141,6 +141,7 @@ defineExpose({
   display: flex;
   align-items: center;
   z-index: 10;
+  min-height: 3em;
 }
 .search-group {
   position: relative;

frontend/src/components/HeaderSelected.vue

@@ -1,91 +0,0 @@
-<template>
-  <div class="selection-bar" v-if="store.selected.size">
-    <p class="select-text">{{ store.selected.size }} selected</p>
-    <DownloadButton />
-    <SvgButton name="copy" tooltip="Copy here" @click="op('cp', dst)" />
-    <SvgButton name="paste" tooltip="Move here" @click="op('mv', dst)" />
-    <SvgButton name="trash" tooltip="Delete ⚠️" @click="op('rm')" />
-    <button
-      class="action-button unselect"
-      @click="store.selected.clear()"
-      @mouseenter="unselectTooltip?.startHover"
-      @mousemove="unselectTooltip?.updatePosition"
-      @mouseleave="unselectTooltip?.endHover"
-    >❌<CursorTooltip ref="unselectTooltip" text="Unselect all">Unselect all</CursorTooltip></button>
-  </div>
-</template>
-
-<script setup lang="ts">
-import {connect, controlUrl} from '@/repositories/WS'
-import { useMainStore } from '@/stores/main'
-import { computed, ref } from 'vue'
-import CursorTooltip from './CursorTooltip.vue'
-
-const unselectTooltip = ref<InstanceType<typeof CursorTooltip> | null>(null)
-
-const store = useMainStore()
-const props = defineProps({
-  path: Array<string>
-})
-
-const dst = computed(() => props.path!.join('/'))
-const op = (opName: string, dst?: string) => {
-  const sel = store.selectedFiles
-  const paths = sel.keys.map(key => {
-    const doc = sel.docs[key]!
-    return doc.loc ? `${doc.loc}/${doc.name}` : doc.name
-  })
-  const msg = {
-    op: opName,
-    sel: paths
-  }
-  // @ts-ignore
-  if (dst !== undefined) msg.dst = dst
-  // Hide items being deleted or moved (optimistic update)
-  if (opName === 'rm' || opName === 'mv') {
-    for (const path of paths) store.hideDoc(path)
-  }
-  const control = connect(controlUrl, {
-    message(ev: MessageEvent) {
-      const res = JSON.parse(ev.data)
-      if ('error' in res) {
-        console.error('Control socket error', msg, res.error)
-        store.error = res.error.message
-        // Restore hidden items on error
-        if (opName === 'rm' || opName === 'mv') {
-          for (const path of paths) store.unhideDoc(path)
-        }
-        return
-      } else if (res.status === 'ack') {
-        console.log('Control ack OK', res)
-        control.close()
-        store.selected.clear()
-        return
-      } else console.log('Unknown control response', msg, res)
-    }
-  })
-  control.onopen = () => {
-    control.send(JSON.stringify(msg))
-  }
-}
-
-</script>
-
-<style>
-.selection-bar {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  padding: 0.3em 0.5em;
-  background: transparent;
-  color: var(--header-color);
-}
-.select-text {
-  color: var(--accent-color);
-  white-space: nowrap;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  margin: 0;
-  padding-right: 0.5em;
-}
-</style>

frontend/src/components/SelectionToolbar.vue

@@ -0,0 +1,211 @@
+<template>
+  <div class="selection-bar" v-if="store.selected.size">
+    <div class="select-info">
+      <template v-if="selectionDisplay.folders.length <= 5">
+        <span class="select-folders">
+          <template v-for="(folder, i) in selectionDisplay.folders" :key="folder.path">
+            <span v-if="i > 0" class="folder-sep">, </span>
+            <a :href="'/#/' + folder.path" class="folder-link" @click.prevent="navigateTo(folder.path)">{{ folder.name }}</a>
+          </template>
+        </span>
+      </template>
+      <template v-else>
+        <span class="select-count">{{ store.selected.size }} items from {{ selectionDisplay.numFolders }} folders</span>
+      </template>
+    </div>
+    <span class="select-size">{{ selectionDisplay.size }}</span>
+    <DownloadButton />
+    <SvgButton name="copy" tooltip="Copy here" @click="op('cp', dst)" />
+    <SvgButton name="paste" tooltip="Move here" @click="op('mv', dst)" />
+    <SvgButton name="trash" tooltip="Delete ⚠️" @click="op('rm')" />
+    <button
+      class="action-button unselect"
+      @click="store.selected.clear()"
+      @mouseenter="unselectTooltip?.startHover"
+      @mousemove="unselectTooltip?.updatePosition"
+      @mouseleave="unselectTooltip?.endHover"
+    >✖ selection</button>
+  </div>
+</template>
+
+<script setup lang="ts">
+import {connect, controlUrl} from '@/repositories/WS'
+import { useMainStore } from '@/stores/main'
+import { computed, ref } from 'vue'
+import { formatSize } from '@/utils'
+import CursorTooltip from './CursorTooltip.vue'
+import router from '@/router'
+
+const unselectTooltip = ref<InstanceType<typeof CursorTooltip> | null>(null)
+
+const store = useMainStore()
+const props = defineProps({
+  path: Array<string>
+})
+
+const dst = computed(() => props.path!.join('/'))
+
+const navigateTo = (path: string) => {
+  router.push('/' + path)
+}
+
+// Truncate long names to reasonable length
+const truncateName = (name: string, maxLen = 20): string => {
+  if (name.length <= maxLen) return name
+  return name.slice(0, maxLen - 1) + '…'
+}
+
+interface FolderInfo {
+  name: string
+  path: string
+  count: number
+}
+
+interface SelectionDisplay {
+  folders: FolderInfo[]
+  numFolders: number
+  size: string
+}
+
+const selectionDisplay = computed<SelectionDisplay>(() => {
+  const sel = store.selectedFiles
+
+  // Calculate total size
+  const totalSize = sel.keys.reduce((sum, key) => {
+    const doc = sel.docs[key]
+    return sum + (doc ? doc.size : 0)
+  }, 0)
+  const sizeStr = formatSize(totalSize)
+
+  // Group by folder location, storing file names
+  const folderGroups = new Map<string, string[]>()
+  for (const key of sel.keys) {
+    const doc = sel.docs[key]
+    if (!doc) continue
+    const loc = doc.loc || ''
+    if (!folderGroups.has(loc)) folderGroups.set(loc, [])
+    folderGroups.get(loc)!.push(doc.name)
+  }
+
+  const numFolders = folderGroups.size
+
+  const folders = Array.from(folderGroups.entries())
+    .sort((a, b) => a[0].localeCompare(b[0]))
+    .map(([loc, names]) => {
+      const count = names.length
+      // For single file, display truncated filename; for multiple, display folder name with count
+      let displayName: string
+      if (count === 1) {
+        displayName = truncateName(names[0]!)
+      } else {
+        const folderName = loc ? loc.split('/').pop()! : (store.server.name || 'Root')
+        displayName = `${truncateName(folderName)} (${count})`
+      }
+      return {
+        name: displayName,
+        path: loc,
+        count
+      }
+    })
+
+  return {
+    folders,
+    numFolders,
+    size: sizeStr
+  }
+})
+
+const op = (opName: string, dst?: string) => {
+  const sel = store.selectedFiles
+  const paths = sel.keys.map(key => {
+    const doc = sel.docs[key]!
+    return doc.loc ? `${doc.loc}/${doc.name}` : doc.name
+  })
+  const msg = {
+    op: opName,
+    sel: paths
+  }
+  // @ts-ignore
+  if (dst !== undefined) msg.dst = dst
+  // Hide items being deleted or moved (optimistic update)
+  if (opName === 'rm' || opName === 'mv') {
+    for (const path of paths) store.hideDoc(path)
+  }
+  const control = connect(controlUrl, {
+    message(ev: MessageEvent) {
+      const res = JSON.parse(ev.data)
+      if ('error' in res) {
+        console.error('Control socket error', msg, res.error)
+        store.error = res.error.message
+        // Restore hidden items on error
+        if (opName === 'rm' || opName === 'mv') {
+          for (const path of paths) store.unhideDoc(path)
+        }
+        return
+      } else if (res.status === 'ack') {
+        console.log('Control ack OK', res)
+        control.close()
+        store.selected.clear()
+        return
+      } else console.log('Unknown control response', msg, res)
+    }
+  })
+  control.onopen = () => {
+    control.send(JSON.stringify(msg))
+  }
+}
+
+</script>
+
+<style>
+.selection-bar {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0.3em 0.5em;
+  background: transparent;
+  color: var(--header-color);
+  font-size: var(--header-font-size);
+  gap: 0.3em;
+  flex-wrap: nowrap;
+  max-width: 100%;
+}
+.select-info {
+  color: var(--accent-color);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  margin: 0;
+  flex-shrink: 1;
+  min-width: 0;
+}
+.select-count {
+  font-weight: 500;
+}
+.select-folders {
+  display: inline;
+}
+.folder-link,
+.folder-link:link,
+.folder-link:visited,
+.folder-link:active {
+  color: var(--accent-color);
+  text-decoration: none;
+  cursor: pointer;
+}
+.folder-link:hover {
+  text-decoration: underline;
+  color: var(--accent-color);
+}
+.folder-sep {
+  color: var(--header-color);
+  opacity: 0.6;
+}
+.select-size {
+  color: var(--header-color);
+  opacity: 0.8;
+  font-family: 'Roboto Mono', monospace;
+  font-size: 0.9em;
+  margin-left: 0.5em;
+}
+</style>

frontend/src/components/SparseIndicator.vue

@@ -0,0 +1,17 @@
+<template>
+  <span v-if="doc.sparseIndicator" class="sparse-indicator">{{ doc.sparseIndicator }}</span>
+</template>
+
+<script setup lang="ts">
+import { Doc } from '@/repositories/Document'
+
+defineProps<{
+  doc: Doc
+}>()
+</script>
+
+<style scoped>
+.sparse-indicator {
+  opacity: 0.7;
+}
+</style>

frontend/src/components/UploadButton.vue

@@ -115,13 +115,13 @@ const uploadCloudFiles = (files: CloudFile[]) => {
     for (let i = 0; i < parts.length; i++) {
       const folderPath = parts.slice(0, i + 1).join('/')
       if (folderPath && !byPath.has(folderPath) && !added.has(folderPath)) {
-        store.addGhost(new Doc({ loc: parts.slice(0, i).join('/'), name: parts[i], key: crypto.randomUUID(), size: 0, mtime: now, dir: true }))
+        store.addGhost(new Doc({ loc: parts.slice(0, i).join('/'), name: parts[i], key: crypto.randomUUID(), size: 0, allocated: 0, mtime: now, dir: true }))
         added.add(folderPath)
       }
     }
     // Ghost file or update existing (overwrite case doesn't need ghost, file already visible)
     const existing = byPath.get(f.cloudName)
-    if (!existing) store.addGhost(new Doc({ loc, name, key: crypto.randomUUID(), size: f.file.size, mtime: now, dir: false }))
+    if (!existing) store.addGhost(new Doc({ loc, name, key: crypto.randomUUID(), size: f.file.size, allocated: 0, mtime: now, dir: false }))
   }
   // @ts-ignore
   upqueue = [...upqueue, ...files]

frontend/src/components/UserManagementModal.vue

@@ -3,6 +3,19 @@
     <div v-if="loading" class="loading">Loading...</div>
     <div v-else>
       <h3>Server Settings</h3>
+      <div class="form-row">
+        <label for="serverName">Server name</label>
+        <div class="input-with-hint">
+          <input
+            type="text"
+            id="serverName"
+            v-model="serverSettings.name"
+            @input="debouncedUpdateServerName"
+            :placeholder="store.server.name"
+          />
+          <small>Leave empty to use the share folder name</small>
+        </div>
+      </div>
       <div class="form-row">
         <label for="publicAccess">
           <input
@@ -62,7 +75,7 @@
 
 <script lang="ts" setup>
 import { ref, reactive, onMounted, watch } from 'vue'
-import { listUsers, createUser, updateUser, deleteUser, updatePublic } from '@/repositories/User'
+import { listUsers, createUser, updateUser, deleteUser, updatePublic, updateServerName, getServerConfig } from '@/repositories/User'
 import type { ISimpleError } from '@/repositories/Client'
 import { useMainStore } from '@/stores/main'
 
@@ -78,9 +91,12 @@ const users = ref<User[]>([])
 const success = ref('')
 const copyButtonText = ref('📋')
 const serverSettings = reactive({
-  public: false
+  public: false,
+  name: '',
 })
 
+let nameDebounceTimer: ReturnType<typeof setTimeout> | null = null
+
 const close = () => {
   store.dialog = ''
   success.value = ''
@@ -206,16 +222,49 @@ const updateServerSettings = async () => {
   }
 }
 
+const updateServerNameSetting = async () => {
+  try {
+    const result = await updateServerName(serverSettings.name)
+    // Update store with the effective name returned by the server
+    store.server.name = result.name
+  } catch (e) {
+    const httpError = e as ISimpleError
+    store.showToast(httpError.message || 'Failed to update server name')
+  }
+}
+
+const debouncedUpdateServerName = () => {
+  if (nameDebounceTimer) clearTimeout(nameDebounceTimer)
+  nameDebounceTimer = setTimeout(updateServerNameSetting, 400)
+}
+
+// Load server config from admin API
+const loadServerConfig = async () => {
+  try {
+    const config = await getServerConfig()
+    serverSettings.name = config.name
+    serverSettings.public = config.public
+  } catch (e) {
+    // Fallback to store values if API fails
+    serverSettings.public = store.server.public || false
+    serverSettings.name = ''
+  }
+}
+
 onMounted(() => {
   serverSettings.public = store.server.public || false
+  serverSettings.name = ''
   loading.value = false
 })
 
-// Load users when dialog opens (only in built-in auth mode)
+// Load users and config when dialog opens
 watch(() => store.dialog, (newVal) => {
-  if (newVal === 'usermgmt' && !store.server.paskia) {
+  if (newVal === 'usermgmt') {
+    loadServerConfig()
+    if (!store.server.paskia) {
       loadUsers()
     }
+  }
 })
 
 watch(() => store.server.public, (newVal) => {
@@ -225,4 +274,13 @@ watch(() => store.server.public, (newVal) => {
 
 <style scoped>
 /* Component-specific styles - most styling comes from ModalDialog.vue global styles */
+.input-with-hint {
+  display: flex;
+  flex-direction: column;
+  gap: 0.25rem;
+}
+.input-with-hint small {
+  color: #666;
+  font-size: 0.75rem;
+}
 </style>

frontend/src/repositories/Document.ts

@@ -7,6 +7,7 @@ export type DocProps = {
   name: string
   key: FUID
   size: number
+  allocated: number
   mtime: number
   dir: boolean
   ghost?: boolean
@@ -17,6 +18,7 @@ export class Doc {
   public loc: string = ""
   public key: FUID = ""
   public size: number = 0
+  public allocated: number = 0
   public mtime: number = 0
   public dir: boolean = false
   public ghost: boolean = false
@@ -35,6 +37,15 @@ export class Doc {
     this._name = name
   }
   get sizedisp(): string { return formatSize(this.size) }
+  /** Returns a sparse allocation indicator symbol, or empty string if fully allocated */
+  get sparseIndicator(): string {
+    if (this.dir || this.size <= this.allocated) return ''
+    if (this.allocated === 0) return '⭕'  // exactly zero
+    const ratio = this.allocated / this.size
+    // Round to nearest 25%: ◔◑◕⬤
+    const rounded = Math.round(ratio * 4)  // 0,1,2,3,4
+    return ['◔', '◔', '◑', '◕', '⬤'][rounded]!  // 0 maps to ◔ since we handled exact 0 above
+  }
   get modified(): string { return formatUnixDate(this.mtime) }
   get url(): string {
     const p = this.loc ? `${this.loc}/${this.name}` : this.name
@@ -78,8 +89,9 @@ export type FileEntry = [
   number,  // level
   string,  // name
   FUID,
-  number, //mtime
+  number,  // mtime
   number,  // size
+  number,  // allocated (actual disk usage)
   number,  // isfile
 ]
 

frontend/src/repositories/User.ts

@@ -55,3 +55,13 @@ export async function updatePublic(isPublic: boolean) {
   const data = await Client.put('/api/config/public', { public: isPublic })
   return data
 }
+
+export async function updateServerName(name: string) {
+  const data = await Client.put('/api/config/name', { name })
+  return data
+}
+
+export async function getServerConfig() {
+  const data = await Client.get('/api/config')
+  return data as { name: string, public: boolean }
+}

frontend/src/stores/main.ts

@@ -96,8 +96,9 @@ export const useMainStore = defineStore('main', {
     space: {
       disk: 0,
       free: 0,
-      usage: 0,
+      used: 0,
       storage: 0,
+      allocated: 0,
     }
   }),
   persist: {
@@ -118,13 +119,14 @@ export const useMainStore = defineStore('main', {
     updateRoot(root: FileEntry[]) {
       const docs = []
       let loc = [] as string[]
-      for (const [level, name, key, mtime, size, isfile] of root) {
+      for (const [level, name, key, mtime, size, allocated, isfile] of root) {
         loc = loc.slice(0, level - 1)
         docs.push(new Doc({
           name,
           loc: level ? loc.join('/') : '/',
           key,
           size,
+          allocated,
           mtime,
           dir: !isfile,
         }))

scripts/devserver.py

@@ -2,10 +2,10 @@
 """Run Vite development server for frontend and Cista backend with auto-reload.
 
 Usage:
-    uv run scripts/devserver.py [frontend] [--backend backend] [cista_args...]
+    uv run scripts/devserver.py [-l listen] [--backend backend] [cista_args...]
 
 Options:
-    frontend    Vite frontend endpoint (default: localhost:8989)
+    -l, --listen  Vite frontend endpoint (default: localhost:8989)
     --backend     Cista backend endpoint (default: from config, or :8999)
 
 Any additional arguments are passed to the cista command.
@@ -31,7 +31,9 @@ from cista.serve import parse_listen
 DEFAULT_BACKEND_PORT = 8999
 
 
-def setup_sanic_backend(listen: str | None, extra_args: list[str]) -> tuple[str, list[str]]:
+def setup_sanic_backend(
+    listen: str | None, extra_args: list[str]
+) -> tuple[str, list[str]]:
     """Parse backend listen address and build cista dev command.
 
     Returns (url, cmd).
@@ -46,7 +48,9 @@ def setup_sanic_backend(listen: str | None, extra_args: list[str]) -> tuple[str,
     return f"http://{host}:{port}", cmd
 
 
-async def run_devserver(frontend: str | None, backend: str | None, extra_args: list[str]) -> None:
+async def run_devserver(
+    frontend: str | None, backend: str | None, extra_args: list[str]
+) -> None:
     reporoot = Path(__file__).parent.parent
     front = reporoot / "frontend"
     if not (front / "package.json").exists():
@@ -80,26 +84,25 @@ def main():
         epilog=HELP_EPILOG,
     )
     parser.add_argument(
-        "frontend",
+        "-l",
-        nargs="?",
+        "--listen",
         metavar="host:port",
         help="Vite frontend endpoint (default: localhost:8989)",
     )
     parser.add_argument(
         "--backend",
-        "-l",
         metavar="host:port",
         help="Cista backend endpoint (default: from config, or :8999)",
     )
     args, unknown = parser.parse_known_args()
     with contextlib.suppress(KeyboardInterrupt):
-        asyncio.run(run_devserver(args.frontend, args.backend, unknown))
+        asyncio.run(run_devserver(args.listen, args.backend, unknown))
 
 
 HELP_EPILOG = """
   scripts/devserver.py                        # Default ports
-  scripts/devserver.py 3000                  # Vite on localhost:3000
+  scripts/devserver.py -l 3000                # Vite on localhost:3000
-  scripts/devserver.py :3000 --backend 8080  # Vite on *:3000, backend on :8080
+  scripts/devserver.py -l :3000 --backend 8080  # Vite on *:3000, backend on :8080
 
   Additional arguments are passed to the cista backend command.
 

tests/test_watching.py

@@ -10,7 +10,9 @@ def decode(data: str):
 
 # Helper function to create a list of FileEntry objects
 def f(count, start=0):
-    return [FileEntry(i, str(i), str(i), 0, 0, 0) for i in range(start, start + count)]
+    return [
+        FileEntry(i, str(i), str(i), 0, 0, 0, 0) for i in range(start, start + count)
+    ]
 
 
 def test_identical_lists():
@@ -35,8 +37,8 @@ def test_insertions():
 
 
 def test_insertion_at_end():
-    old_list = [*f(3), FileEntry(1, "xxx", "xxx", 0, 0, 1)]
+    old_list = [*f(3), FileEntry(1, "xxx", "xxx", 0, 0, 0, 1)]
-    newfile = FileEntry(1, "yyy", "yyy", 0, 0, 1)
+    newfile = FileEntry(1, "yyy", "yyy", 0, 0, 0, 1)
     new_list = [*old_list, newfile]
     expected = [UpdKeep(4), UpdIns([newfile])]
     assert decode(format_update(old_list, new_list)) == expected