added library reordering & prefix rename

README.md

@@ -41,7 +41,7 @@ cd PLWL
 
 ## Importing from a wine prefix
 
-Besides copy/move/leave, an app can be imported **from a wine prefix**: pick the prefix, then the app folder inside its `drive_c`. Nothing is copied — paths are stored relative to the prefix, so wine sees the app as if it were normally installed on `C:\` (registry entries pointing to `C:\...` keep working). Both layouts work: plain wine prefixes (`drive_c` at the top) and Proton-managed ones (`drive_c` under `pfx/`). The app stays tied to that prefix; removing the launcher entry never deletes files from the prefix. Imports keep the folder as it was: symlinks are recreated (rewritten to relative whenever the target is part of the launcher) and file permissions are carried over, so an imported game or build runs straight away.
+Besides copy/move/leave, an app can be imported **from a wine prefix**: pick the prefix, then the app folder inside its `drive_c`. Nothing is copied — paths are stored relative to the prefix, so wine sees the app as if it were normally installed on `C:\` (registry entries pointing to `C:\...` keep working). Both layouts work: plain wine prefixes (`drive_c` at the top) and Proton-managed ones (`drive_c` under `pfx/`). The app stays tied to that prefix; removing the launcher entry never deletes files from the prefix. A prefix can be renamed later (Wine prefixes): the folder moves on disk and everything running in it follows the new name, because those paths are stored relative to the prefix. Imports keep the folder as it was: symlinks are recreated (rewritten to relative whenever the target is part of the launcher) and file permissions are carried over, so an imported game or build runs straight away.
 
 ## "Open with PLWL" in the file manager
 
@@ -68,7 +68,7 @@ A sync also carries **how the apps are set up**: the Wine/Proton build and prefi
 ## Wine & Proton support
 
 - **System Wine** — uses the `wine` binary from PATH.
-- **Imported builds** — drop any wine or Proton build into `files/wines/`. The folder may contain the build directly, or one level of nesting (zip-extracted layouts are detected automatically). After the copy, PLWL rewires the build's absolute symlinks to relative ones and restores the executable bit on the binaries it needs to run (`proton`, `wine`, `wineserver`, `winetricks`), so a build that arrived from a zip or another machine works without further fiddling.
+- **Imported builds** — drop any wine or Proton build into `files/wines/`. The folder may contain the build directly, or one level of nesting (zip-extracted layouts are detected automatically). After the copy, PLWL rewires the build's absolute symlinks to relative ones and restores the executable bit on the binaries it needs to run (`proton`, `wine`, `wineserver`, `winetricks`), so a build that arrived from a zip or another machine works without further fiddling. A build can also be given a **displayed name** of its own (Wine versions): it is used everywhere the build is offered — library config, settings and the *Open with PLWL* popup — while the folder in `files/wines/` keeps its name and the symlinks inside prefixes stay valid.
 - **Proton without Steam** — fully supported. Proton is invoked like Steam does it: `STEAM_COMPAT_CLIENT_INSTALL_PATH` points to a fake steam client folder, `STEAM_COMPAT_DATA_PATH` is a per-build compat folder, and the prefix lives at `<compat>/pfx` which PLWL links to its own prefix folder. No Steam installation required (GE builds work out of the box; for a few Valve builds that refuse to run without a client, PLWL fakes a minimal steam folder in `files/data/fake-steam`).
 
 ## Translations

development.md

@@ -20,6 +20,8 @@ src/               main process (Node/Electron backend)
   symlinks.js      relative symlink rewiring + executable-bit restoration
                    (shared by imports, prefixes and LAN sync)
   importer.js      app import (copy/move/leave/prefix)
+  names.js         user-typed name sanitizing (prefix folder names, wine
+                   display names)
   openwith.js      "Open with PLWL": ad-hoc runs, no library entry
   shortcuts.js     .desktop shortcut generation
   paths.js         portable layout, FILES-relative path helpers, translation sync

files/translations/en-us.json

@@ -35,6 +35,7 @@
     "library.removePrefixNote": "\nFiles stay in the prefix, only the launcher entry is removed.",
     "library.tools": "Wine tools",
     "library.viewLogs": "View logs",
+    "library.reorderHint": "Drag to change the order",
     "import.question": "Should the app files be brought into the launcher so it stays portable, or left where they are?",
     "import.mode.copy": "Copy into launcher (portable)",
     "import.mode.move": "Move into launcher (portable)",
@@ -113,7 +114,12 @@
     "prefixes.defaultSet": "{0} is now the default prefix",
     "prefixes.exists": "A prefix with this name already exists",
     "prefixes.invalidName": "Invalid prefix name",
-    "prefixes.mainLocked": "The Main prefix cannot be deleted",
+    "prefixes.mainLocked": "The Main prefix cannot be renamed or deleted",
+    "prefixes.rename": "Rename",
+    "prefixes.renameTitle": "Rename prefix",
+    "prefixes.renameHint": "The prefix folder and every app using it move to the new name.",
+    "prefixes.renamed": "Prefix {0} renamed to {1}",
+    "prefixes.renameFailed": "Could not rename the prefix: {0}",
     "wines.title": "Wine versions",
     "wines.subtitle": "You can import your wine/proton builds here. Proton runs fully without Steam.",
     "wines.system": "System Wine",
@@ -132,7 +138,13 @@
     "wines.delete": "Delete",
     "wines.deleteConfirm": "Delete {0} from files/wines?\nThe build folder will be permanently removed.",
     "wines.deleted": "{0} deleted",
-    "wines.systemLocked": "System Wine cannot be deleted",
+    "wines.systemLocked": "System Wine cannot be renamed or deleted",
+    "wines.rename": "Rename",
+    "wines.renameTitle": "Displayed name",
+    "wines.renameHint": "Only the name shown in the launcher changes - the build folder in files/wines stays as it is.",
+    "wines.renamed": "{0} is now shown as {1}",
+    "wines.renameFailed": "Could not rename: {0}",
+    "wines.invalidName": "Invalid name",
     "wines.import": "Import",
     "wines.importPick": "Choose the Wine/Proton build folder",
     "wines.importing": "Importing Wine build…",

files/translations/pl.json

@@ -35,6 +35,7 @@
     "library.removePrefixNote": "\nPliki zostają w prefiksie, usuwany jest tylko wpis w launcherze.",
     "library.tools": "Narzędzia Wine",
     "library.viewLogs": "Podejrzyj logi",
+    "library.reorderHint": "Przeciągnij, aby zmienić kolejność",
     "import.question": "Czy pliki aplikacji mają trafić do launchera, aby był przenośny, czy mają zostać tam, gdzie są?",
     "import.mode.copy": "Skopiuj do launchera (przenośne)",
     "import.mode.move": "Przenieś do launchera (przenośne)",
@@ -113,7 +114,12 @@
     "prefixes.defaultSet": "{0} jest teraz prefiksem domyślnym",
     "prefixes.exists": "Prefiks o tej nazwie już istnieje",
     "prefixes.invalidName": "Nieprawidłowa nazwa prefiksu",
-    "prefixes.mainLocked": "Prefiks Main nie może być usunięty",
+    "prefixes.mainLocked": "Prefiks Main nie może być zmieniony ani usunięty",
+    "prefixes.rename": "Zmień nazwę",
+    "prefixes.renameTitle": "Zmień nazwę prefiksu",
+    "prefixes.renameHint": "Folder prefiksu i wszystkie używające go aplikacje przechodzą na nową nazwę.",
+    "prefixes.renamed": "Zmieniono nazwę prefiksu {0} na {1}",
+    "prefixes.renameFailed": "Nie udało się zmienić nazwy prefiksu: {0}",
     "wines.title": "Wersje Wine",
     "wines.subtitle": "Tutaj możesz zaimportować swoje buildy wine/proton. Proton działa w pełni bez Steama.",
     "wines.system": "Wine systemowe",
@@ -132,7 +138,13 @@
     "wines.delete": "Usuń",
     "wines.deleteConfirm": "Usunąć {0} z files/wines?\nFolder z buildem zostanie trwale usunięty.",
     "wines.deleted": "Usunięto {0}",
-    "wines.systemLocked": "Wine systemowego nie można usunąć",
+    "wines.systemLocked": "Wine systemowego nie można zmienić ani usunąć",
+    "wines.rename": "Zmień nazwę",
+    "wines.renameTitle": "Wyświetlana nazwa",
+    "wines.renameHint": "Zmienia się tylko nazwa pokazywana w launcherze - folder builda w files/wines zostaje bez zmian.",
+    "wines.renamed": "{0} wyświetla się teraz jako {1}",
+    "wines.renameFailed": "Nie udało się zmienić nazwy: {0}",
+    "wines.invalidName": "Nieprawidłowa nazwa",
     "wines.import": "Importuj",
     "wines.importPick": "Wybierz folder z buildem Wine/Proton",
     "wines.importing": "Importowanie builda Wine…",

renderer/app.js

@@ -123,8 +123,20 @@ let modalSwapTimer = null
 // operation) close it.
 let modalLocked = false
 
+// Resolver of the current promise-based modal (confirm/prompt). Escape, the
+// backdrop or another modal opening must settle it, or the awaiting caller
+// would never continue.
+let modalSettle = null
+
+function settleModal(value) {
+  const settle = modalSettle
+  modalSettle = null
+  if (settle) settle(value)
+}
+
 function showModal(html, opts) {
   modalLocked = !!(opts && opts.locked)
+  settleModal(null)
   if (modalTeardownTimer) {
     clearTimeout(modalTeardownTimer)
     modalTeardownTimer = null
@@ -185,6 +197,7 @@ function closeModal() {
   const overlay = qs('#modal-overlay')
   const modal = qs('#modal')
   if (overlay.style.display === 'none') return
+  settleModal(null)
   modal.classList.add('closing')
   overlay.classList.remove('show')
   if (modalTeardownTimer) clearTimeout(modalTeardownTimer)
@@ -212,14 +225,48 @@ function confirmModal(message, okLabel) {
         <button class="button primary" id="modal-ok">${okLabel || t('dialog.ok')}</button>
       </div>
     `)
-    modal.querySelector('#modal-cancel').onclick = () => {
+    const finish = ok => {
+      settleModal(ok)
       closeModal()
-      resolve(false)
     }
-    modal.querySelector('#modal-ok').onclick = () => {
+    modal.querySelector('#modal-cancel').onclick = () => finish(false)
+    modal.querySelector('#modal-ok').onclick = () => finish(true)
+    modalSettle = v => resolve(!!v)
+  })
+}
+
+// Shared "type a name" modal (prefix rename, wine display name): Enter
+// submits, Cancel/Escape/backdrop resolve null.
+function promptModal({ title, label, value, confirm, hint }) {
+  return new Promise(resolve => {
+    const modal = showModal(`
+      <h2>${title}</h2>
+      ${hint ? `<p class="subtitle">${hint}</p>` : ''}
+      <label class="field-label">${label}</label>
+      <input type="text" id="prompt-input">
+      <div class="modal-actions">
+        <button class="button" id="modal-cancel">${t('dialog.cancel')}</button>
+        <button class="button primary" id="modal-ok">${confirm || t('dialog.ok')}</button>
+      </div>
+    `)
+    const input = modal.querySelector('#prompt-input')
+    input.value = value || ''
+    input.focus()
+    input.select()
+    const finish = v => {
+      settleModal(v)
       closeModal()
-      resolve(true)
     }
+    const submit = () => finish(input.value.trim() || null)
+    input.addEventListener('keydown', e => {
+      if (e.key === 'Enter') {
+        e.preventDefault()
+        submit()
+      }
+    })
+    modal.querySelector('#modal-cancel').onclick = () => finish(null)
+    modal.querySelector('#modal-ok').onclick = submit
+    modalSettle = v => resolve(v)
   })
 }
 
@@ -427,6 +474,80 @@ function fmtPlaytime(seconds) {
   return t('library.playtimeMin', m)
 }
 
+// --- reordering the library (drag & drop) ----------------------------------
+// The registry array IS the display order, so a drop reorders state.games and
+// persists the whole id list; the main process appends any id the renderer did
+// not know about, so a stale card list can never drop an entry. Cards are
+// plain flex items, so the insertion point is the half of the hovered card the
+// pointer is over.
+let dragId = null
+
+function clearDropMarks(except) {
+  qsa('.game-card.drop-before, .game-card.drop-after').forEach(card => {
+    if (card !== except) card.classList.remove('drop-before', 'drop-after')
+  })
+}
+
+function dropSide(card, x) {
+  const rect = card.getBoundingClientRect()
+  return x < rect.left + rect.width / 2 ? 'before' : 'after'
+}
+
+function commitOrder(ids) {
+  const byId = new Map(state.games.map(g => [g.id, g]))
+  state.games = ids.map(id => byId.get(id)).filter(Boolean)
+  renderLibrary()
+  window.plwl.gamesReorder(ids).then(games => {
+    if (!Array.isArray(games)) return
+    const same = games.length === state.games.length && games.every((g, i) => g.id === state.games[i].id)
+    if (same) return
+    // the registry also held entries this render did not know about - show them
+    state.games = games
+    renderLibrary()
+  })
+}
+
+function wireCardDrag(card, game) {
+  card.draggable = true
+  card.title = t('library.reorderHint')
+  card.addEventListener('dragstart', e => {
+    dragId = game.id
+    e.dataTransfer.effectAllowed = 'move'
+    e.dataTransfer.setData('text/plain', game.id) // a drag needs data to start
+    card.classList.add('dragging')
+  })
+  card.addEventListener('dragend', () => {
+    dragId = null
+    clearDropMarks()
+  })
+  card.addEventListener('dragover', e => {
+    if (!dragId || dragId === game.id) return
+    e.preventDefault()
+    e.dataTransfer.dropEffect = 'move'
+    const side = dropSide(card, e.clientX)
+    clearDropMarks(card)
+    card.classList.toggle('drop-before', side === 'before')
+    card.classList.toggle('drop-after', side === 'after')
+  })
+  card.addEventListener('dragleave', e => {
+    // dragleave also fires when the pointer crosses a child element
+    if (!card.contains(e.relatedTarget)) card.classList.remove('drop-before', 'drop-after')
+  })
+  card.addEventListener('drop', e => {
+    if (!dragId || dragId === game.id) return
+    e.preventDefault()
+    e.stopPropagation() // the list's own drop handler moves cards to the end
+    const side = dropSide(card, e.clientX)
+    const id = dragId
+    dragId = null
+    const ids = state.games.map(g => g.id).filter(x => x !== id)
+    const at = ids.indexOf(game.id)
+    if (at === -1) return
+    ids.splice(side === 'before' ? at : at + 1, 0, id)
+    commitOrder(ids)
+  })
+}
+
 async function attachCardIcon(card, game) {
   // placeholder first so every card has a stable icon slot; swapped for the
   // real icon once it loads - games without one just keep the placeholder
@@ -513,6 +634,7 @@ function renderLibrary() {
       renderLibrary()
     }
     list.appendChild(card)
+    wireCardDrag(card, game)
     attachCardIcon(card, game)
   })
 }
@@ -820,11 +942,38 @@ function renderPrefixes() {
       </div>
       ${p.name === defs.default ? `<span class="badge primary">${t('prefixes.default')}</span>` : ''}
       <div class="actions">
+        ${locked ? '' : '<button class="button small" data-act="rename"></button>'}
         <button class="button small" data-act="default" ${p.name === defs.default ? 'style="display:none"' : ''}></button>
         <button class="button small danger" data-act="delete" ${locked ? 'style="display:none"' : ''}></button>
       </div>
     `
     row.querySelector('.title').textContent = p.name
+    const renBtn = row.querySelector('[data-act=rename]')
+    if (renBtn) {
+      renBtn.textContent = t('prefixes.rename')
+      renBtn.onclick = async () => {
+        const name = await promptModal({
+          title: t('prefixes.renameTitle'),
+          label: t('prefixes.namePlaceholder'),
+          hint: t('prefixes.renameHint'),
+          value: p.name,
+          confirm: t('prefixes.rename')
+        })
+        if (!name || name === p.name) return
+        const res = await window.plwl.prefixesRename(p.name, name)
+        if (!res || !res.ok) {
+          const err = (res && res.error) || ''
+          const known = { alreadyExists: 'prefixes.exists', invalidName: 'prefixes.invalidName', isMain: 'prefixes.mainLocked' }
+          toast(known[err] ? t(known[err]) : t('prefixes.renameFailed', err), 'error')
+          return
+        }
+        toast(t('prefixes.renamed', p.name, res.name), 'success')
+        state.prefixes = await window.plwl.prefixesList()
+        // the apps that run in this prefix point at the new name now
+        state.games = await window.plwl.gamesList()
+        renderPrefixes()
+      }
+    }
     const defBtn = row.querySelector('[data-act=default]')
     defBtn.textContent = t('prefixes.makeDefault')
     defBtn.onclick = async () => {
@@ -874,12 +1023,36 @@ function renderWines() {
       ${w.version ? `<span class="badge">${w.version}</span>` : ''}
       <div class="actions">
         <button class="button small" data-act="default" ${isDefault ? 'style="display:none"' : ''}></button>
+        ${w.id !== 'system' ? `<button class="button small" data-act="rename"></button>` : ''}
         ${w.id !== 'system' ? `<button class="button small danger" data-act="delete"></button>` : ''}
       </div>
     `
     row.querySelector('.title').textContent = w.label
     row.querySelector('.sub').textContent = displayPath(w.path) || t('wines.systemHint')
     row.querySelector('.sub').title = row.querySelector('.sub').textContent
+    const renBtn = row.querySelector('[data-act=rename]')
+    if (renBtn) {
+      renBtn.textContent = t('wines.rename')
+      renBtn.onclick = async () => {
+        const name = await promptModal({
+          title: t('wines.renameTitle'),
+          label: t('common.name'),
+          hint: t('wines.renameHint'),
+          value: w.displayName || w.label,
+          confirm: t('wines.rename')
+        })
+        if (!name || name === (w.displayName || w.label)) return
+        const res = await window.plwl.winesSetDisplayName(w.id, name)
+        if (!res || !res.ok) {
+          const err = (res && res.error) || ''
+          toast(err === 'invalidName' ? t('wines.invalidName') : t('wines.renameFailed', err), 'error')
+          return
+        }
+        toast(t('wines.renamed', w.label, res.displayName), 'success')
+        state.wines = await window.plwl.winesList()
+        renderWines()
+      }
+    }
     const defBtn = row.querySelector('[data-act=default]')
     defBtn.textContent = t('wines.makeDefault')
     defBtn.onclick = async () => {
@@ -1616,6 +1789,19 @@ function wireEvents() {
   })
   qs('#btn-import-top').addEventListener('click', startImportFlow)
   qs('#btn-import-empty').addEventListener('click', startImportFlow)
+  // a drop on the empty area of the grid moves the card to the end; drops on a
+  // card are handled by the card itself (and stop there)
+  const gameList = qs('#game-list')
+  gameList.addEventListener('dragover', e => {
+    if (dragId) e.preventDefault()
+  })
+  gameList.addEventListener('drop', e => {
+    if (!dragId || e.target !== gameList) return
+    e.preventDefault()
+    const id = dragId
+    dragId = null
+    commitOrder([...state.games.map(g => g.id).filter(x => x !== id), id])
+  })
   qs('#btn-prefix-create').addEventListener('click', async () => {
     const input = qs('#prefix-name-input')
     const name = input.value.trim()

renderer/style.css

@@ -490,6 +490,8 @@ select {
   margin: 1rem 0;
 }
 .game-card {
+  position: relative;
+  cursor: grab;
   flex: 1 1 17rem;
   min-width: 17rem;
   max-width: 24rem;
@@ -526,6 +528,21 @@ select {
   mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'><rect x='3' y='3' width='18' height='18' rx='2'/><circle cx='8.5' cy='8.5' r='1.5'/><path d='M21 15l-5-5L5 21'/></svg>") center / contain no-repeat;
 }
 .game-card:hover { border-color: rgba(255, 255, 255, 0.2); }
+/* drag & drop reordering: the dragged card fades, the hovered one shows on
+   which side the dragged card will land */
+.game-card.dragging { opacity: 0.4; }
+.game-card.drop-before::after,
+.game-card.drop-after::after {
+  content: '';
+  position: absolute;
+  top: 0.5rem;
+  bottom: 0.5rem;
+  width: 0.22rem;
+  border-radius: 0.11rem;
+  background: var(--text-color);
+}
+.game-card.drop-before::after { left: -0.5rem; }
+.game-card.drop-after::after { right: -0.5rem; }
 .game-card h3 {
   font-size: 1.05rem;
   font-family: 'Nunito Black', 'Nunito', sans-serif;

src/ipc/index.js

@@ -83,6 +83,7 @@ function registerIpc({ getWindow, onGamesChanged }) {
   })
   ipcMain.handle('wines:refresh', async () => (await wines.refreshWines()).filter(w => !w.disabled))
   ipcMain.handle('wines:setDisabled', (e, id, disabled) => wines.setWineDisabled(id, disabled))
+  ipcMain.handle('wines:setDisplayName', (e, id, name) => wines.setWineDisplayName(id, name))
   ipcMain.handle('wines:setDefault', (e, id) => wines.setDefaultWine(id))
   ipcMain.handle('wines:delete', (e, id) => wines.deleteWine(id))
   ipcMain.handle('wines:import', async (e, srcDir) => {
@@ -97,6 +98,7 @@ function registerIpc({ getWindow, onGamesChanged }) {
   ipcMain.handle('prefixes:list', () => prefixes.listPrefixes())
   ipcMain.handle('prefixes:create', (e, name) => prefixes.createPrefix(name))
   ipcMain.handle('prefixes:delete', (e, name) => prefixes.deletePrefix(name))
+  ipcMain.handle('prefixes:rename', (e, oldName, newName) => prefixes.renamePrefix(oldName, newName))
   ipcMain.handle('prefixes:setDefault', (e, name) => prefixes.setDefaultPrefix(name))
 
   // games: library -----------------------------------------------------------------
@@ -105,6 +107,7 @@ function registerIpc({ getWindow, onGamesChanged }) {
   // prefix pin is enforced inside library.updateGame (prefix/importSource
   // fields are ignored for prefix imports), so nothing extra needed here
   ipcMain.handle('games:update', (e, id, patch) => library.updateGame(id, patch))
+  ipcMain.handle('games:reorder', (e, ids) => library.reorderGames(ids))
   ipcMain.handle('games:remove', (e, id) => {
     shortcuts.removeShortcut(id)
     return library.removeGame(id)

src/library.js

@@ -171,10 +171,45 @@ function newGame({ id, name, exePath, workdir, mode }) {
   }
 }
 
+// The registry array IS the library order, so a drag & drop reorder rewrites
+// it whole. Ids the caller did not send keep their relative order at the end:
+// a renderer that raced an import must never drop an entry.
+function reorderGames(ids) {
+  const games = loadGames()
+  const rest = new Map(games.map(g => [g.id, g]))
+  const out = []
+  for (const id of Array.isArray(ids) ? ids : []) {
+    const g = rest.get(String(id))
+    if (!g) continue
+    rest.delete(String(id))
+    out.push(g)
+  }
+  for (const g of games) if (rest.has(g.id)) out.push(g)
+  saveGames(out)
+  return out
+}
+
+// Follows a prefix rename through the app registry. Raw JSON on purpose:
+// loadGames()/saveGames() would resolve and re-relativize every path against
+// a prefix folder that was just renamed. The stored paths of prefix imports
+// are relative to the prefix root, so only the name reference changes.
+function renamePrefixRefs(oldName, newName) {
+  const games = readJson(REGISTRY, [])
+  let updated = 0
+  for (const g of games) {
+    if (g.prefix === oldName) {
+      g.prefix = newName
+      updated++
+    }
+  }
+  if (updated) writeJson(REGISTRY, games)
+  return updated
+}
+
 function resolvePrefixDir(game) {
   if (game.prefix) return prefixPath(game.prefix)
   const defs = readJson(path.join(DIRS.DATA, 'prefixes.json'), { default: 'default', prefixes: [] })
   return prefixPath(defs.default || 'default')
 }
 
-module.exports = { loadGames, saveGames, portableGame, getGame, addGame, updateGame, removeGame, loadSettings, saveSettings, newGame, newGameId, resolvePrefixDir, clearPlaytime, readPlaySeconds, writePlaySeconds, playtimeFile }
+module.exports = { loadGames, saveGames, portableGame, getGame, addGame, updateGame, removeGame, reorderGames, renamePrefixRefs, loadSettings, saveSettings, newGame, newGameId, resolvePrefixDir, clearPlaytime, readPlaySeconds, writePlaySeconds, playtimeFile }

src/names.js

@@ -0,0 +1,27 @@
+'use strict'
+
+// Names the user types: trim, collapse whitespace, drop control characters.
+// An empty result means "invalid" - callers reject it instead of writing it.
+function cleanName(name) {
+  return String(name || '')
+    .replace(/[\u0000-\u001f\u007f]/g, '')
+    .trim()
+    .replace(/\s+/g, ' ')
+}
+
+// A name that becomes a folder inside the launcher (a prefix): letters and
+// digits of any language (Polish names keep their diacritics) plus the
+// punctuation that is safe in a path segment. "." and ".." are path segments,
+// not names.
+function normalizePathName(name) {
+  const out = cleanName(name).replace(/[^\p{L}\p{N} ._-]/gu, '')
+  return /^\.+$/.test(out) ? '' : out
+}
+
+// A label only (a wine build's displayed name) - never used as a path, so it
+// may keep whatever the user typed.
+function normalizeLabel(name) {
+  return cleanName(name)
+}
+
+module.exports = { normalizePathName, normalizeLabel }

src/prefixes.js

@@ -4,6 +4,7 @@ const path = require('path')
 const fs = require('fs')
 const { DIRS, readJson, writeJson } = require('./paths')
 const { rewireSymlinks } = require('./symlinks')
+const { normalizePathName } = require('./names')
 
 const REGISTRY = path.join(DIRS.DATA, 'prefixes.json')
 const MAIN = 'Main'
@@ -26,10 +27,6 @@ function savePrefixes(defs) {
   writeJson(REGISTRY, defs)
 }
 
-function normalizeName(name) {
-  return String(name || '').trim().replace(/[^\w .-]/g, '').replace(/\s+/g, ' ')
-}
-
 function prefixPath(name) {
   return path.join(DIRS.PREFIXES, name)
 }
@@ -62,7 +59,7 @@ function prefixDriveRoot(name) {
 }
 
 function createPrefix(name) {
-  const clean = normalizeName(name)
+  const clean = normalizePathName(name)
   if (!clean) return { ok: false, error: 'invalidName' }
   if (clean.toLowerCase() === MAIN.toLowerCase()) return { ok: false, error: 'alreadyExists' }
   if (fs.existsSync(prefixPath(clean))) return { ok: false, error: 'alreadyExists' }
@@ -95,6 +92,35 @@ async function healPrefix(name) {
   return rewireSymlinks(prefixPath(name), [DIRS.FILES])
 }
 
+// Renaming a prefix moves its folder on disk and follows the name into the
+// registry (default included) and every app that runs in it. Prefix imports
+// keep their stored paths (they are relative to the prefix root), so only the
+// reference changes - the files move with the folder.
+function renamePrefix(oldName, newName) {
+  const clean = normalizePathName(newName)
+  if (!clean) return { ok: false, error: 'invalidName' }
+  const defs = listPrefixes()
+  const entry = defs.prefixes.find(p => p.name === oldName)
+  if (!entry) return { ok: false, error: 'notFound' }
+  if (entry.locked || String(oldName).toLowerCase() === MAIN.toLowerCase()) return { ok: false, error: 'isMain' }
+  if (clean === oldName) return { ok: true, name: clean, games: 0 }
+  if (defs.prefixes.some(p => p.name === clean) || fs.existsSync(prefixPath(clean))) return { ok: false, error: 'alreadyExists' }
+  // a registered prefix whose folder wine has not created yet can still be
+  // renamed - only the registry entry exists
+  if (fs.existsSync(prefixPath(oldName))) {
+    try {
+      fs.renameSync(prefixPath(oldName), prefixPath(clean))
+    } catch (err) {
+      return { ok: false, error: String((err && err.message) || err) }
+    }
+  }
+  entry.name = clean
+  if (defs.default === oldName) defs.default = clean
+  savePrefixes(defs)
+  const games = require('./library').renamePrefixRefs(oldName, clean)
+  return { ok: true, name: clean, games }
+}
+
 function setDefaultPrefix(name) {
   const defs = listPrefixes()
   if (name && !defs.prefixes.some(p => p.name === name)) return { ok: false, error: 'notFound' }
@@ -103,4 +129,4 @@ function setDefaultPrefix(name) {
   return { ok: true }
 }
 
-module.exports = { listPrefixes, savePrefixes, createPrefix, deletePrefix, setDefaultPrefix, prefixPath, prefixExists, prefixDriveRoot, healPrefix, normalizeName, MAIN }
+module.exports = { listPrefixes, savePrefixes, createPrefix, deletePrefix, renamePrefix, setDefaultPrefix, prefixPath, prefixExists, prefixDriveRoot, healPrefix, MAIN }

src/preload.js

@@ -42,12 +42,14 @@ contextBridge.exposeInMainWorld('plwl', {
   winesList: () => ipcRenderer.invoke('wines:list'),
   winesRefresh: () => ipcRenderer.invoke('wines:refresh'),
   winesSetDisabled: (id, disabled) => ipcRenderer.invoke('wines:setDisabled', id, disabled),
+  winesSetDisplayName: (id, name) => ipcRenderer.invoke('wines:setDisplayName', id, name),
   winesSetDefault: id => ipcRenderer.invoke('wines:setDefault', id),
   winesDelete: id => ipcRenderer.invoke('wines:delete', id),
   winesImport: srcDir => ipcRenderer.invoke('wines:import', srcDir),
   prefixesList: () => ipcRenderer.invoke('prefixes:list'),
   prefixesCreate: name => ipcRenderer.invoke('prefixes:create', name),
   prefixesDelete: name => ipcRenderer.invoke('prefixes:delete', name),
+  prefixesRename: (oldName, newName) => ipcRenderer.invoke('prefixes:rename', oldName, newName),
   prefixesSetDefault: name => ipcRenderer.invoke('prefixes:setDefault', name),
   openwithTake: () => ipcRenderer.invoke('openwith:take'),
   openwithRun: payload => ipcRenderer.invoke('openwith:run', payload),
@@ -66,6 +68,7 @@ contextBridge.exposeInMainWorld('plwl', {
   gamesList: () => ipcRenderer.invoke('games:list'),
   gamesGet: id => ipcRenderer.invoke('games:get', id),
   gamesUpdate: (id, patch) => ipcRenderer.invoke('games:update', id, patch),
+  gamesReorder: ids => ipcRenderer.invoke('games:reorder', ids),
   gamesClearPlaytime: id => ipcRenderer.invoke('games:clearPlaytime', id),
   gamesSetIconFile: (id, p) => ipcRenderer.invoke('games:setIconFile', id, p),
   gamesExtractIcon: id => ipcRenderer.invoke('games:extractIcon', id),

src/wines.js

@@ -5,6 +5,7 @@ const fsp = fs.promises
 const path = require('path')
 const { DIRS, readJson, writeJson, toPortablePath, resolvePortablePath } = require('./paths')
 const { dedupeDir } = require('./fsutil')
+const { normalizeLabel } = require('./names')
 const { rewireSymlinks, restoreExecutableBits, EXEC_NAMES } = require('./symlinks')
 
 const WINES_DIR = DIRS.WINES
@@ -125,7 +126,14 @@ async function refreshWines() {
     }
   }
   const disabled = new Set(prev.filter(w => w.disabled).map(w => w.id))
-  for (const w of found) if (disabled.has(w.id)) w.disabled = true
+  // a display name the user gave the build has to survive every rescan, just
+  // like the disabled flag (both live in the registry, not in the folder)
+  const renamed = new Map(prev.filter(w => w.displayName).map(w => [w.id, w.displayName]))
+  for (const w of found) {
+    if (disabled.has(w.id)) w.disabled = true
+    if (renamed.has(w.id)) w.displayName = renamed.get(w.id)
+    applyDisplayName(w)
+  }
   writeJson(REGISTRY, found.map(wineRel))
   return found
 }
@@ -133,7 +141,7 @@ async function refreshWines() {
 // Stored relative to FILES (portable), resolved to absolute for use - same
 // scheme as the game registry. `id`, `name`, `label`, `version`, `type` pass through.
 function wineAbs(w) {
-  return { ...w, path: resolvePortablePath(w.path), wineBin: resolvePortablePath(w.wineBin) }
+  return applyDisplayName({ ...w, path: resolvePortablePath(w.path), wineBin: resolvePortablePath(w.wineBin) })
 }
 
 function wineRel(w) {
@@ -148,6 +156,29 @@ function getWine(id) {
   return getWines().find(w => w.id === id) || null
 }
 
+// What the user typed wins over the folder-derived label everywhere the
+// build is shown (library config, settings, Open with popup). Every registry
+// read goes through here, so a stale stored label can never leak out.
+function applyDisplayName(w) {
+  if (w && w.displayName) w.label = w.displayName
+  return w
+}
+
+// A build keeps its folder and id (apps point at the id, and prefix symlinks
+// point inside the folder), so "renaming" only changes the shown label.
+function setWineDisplayName(id, name) {
+  const wines = getWines()
+  const w = wines.find(x => x.id === id)
+  if (!w) return { ok: false, error: 'notFound' }
+  if (w.type === 'system') return { ok: false, error: 'isSystem' }
+  const clean = normalizeLabel(name)
+  if (!clean) return { ok: false, error: 'invalidName' }
+  w.displayName = clean
+  applyDisplayName(w)
+  writeJson(REGISTRY, wines.map(wineRel))
+  return { ok: true, displayName: clean }
+}
+
 function setWineDisabled(id, disabled) {
   const wines = getWines()
   const w = wines.find(x => x.id === id)
@@ -273,4 +304,4 @@ async function importWineFolder(srcDir) {
   return { ok: true, path: toPortablePath(dst), symlinksFixed: healed.links, executablesFixed: healed.executables }
 }
 
-module.exports = { refreshWines, getWines, getWine, resolveWine, setWineDisabled, getDefaultWine, setDefaultWine, deleteWine, importWineFolder, findWineBinary, detectType, fixBuildSymlinks, healBuild }
+module.exports = { refreshWines, getWines, getWine, resolveWine, setWineDisabled, setWineDisplayName, getDefaultWine, setDefaultWine, deleteWine, importWineFolder, findWineBinary, detectType, fixBuildSymlinks, healBuild }