Implements per-item / per-package hash-based diffing for the IPC state-update
channel. This is the architecturally biggest performance win — for queues
with thousands of items where most are idle between emits, this can cut
IPC payload size by 80-95%.
How it works:
1. New `getSnapshotForEmit()` method computes a compact hash per item and
per package covering the visible/mutable fields. On each emit it includes
only items/packages whose hash changed since the last emit, plus a list
of removed IDs. Every 30 seconds a full resync is sent for safety.
2. A new `payloadKind: "full" | "delta"` field on UiSnapshot signals the
format. `removedItemIds` and `removedPackageIds` lists carry deletions.
3. The renderer maintains a `masterSnapshotRef` and merges incoming deltas:
spreads new items over master items, deletes the removed-IDs, then sets
the merged snapshot as React state. Full payloads replace the master
entirely (initial sync + 30s resync).
4. The existing direct `getSnapshot()` API used by app-controller, debug-server,
and link-export is unchanged — they still get a full snapshot. Only the
"state" emit channel uses delta encoding.
Trade-offs accepted:
- Hash computation cost: ~13 string concats per item per emit. With 5000
items at 700ms intervals that's ~7100 hash ops/sec — well under 1ms total.
- The 30s full resync ensures any drift bug self-heals within 30s without
user-visible glitch.
- Server keeps two extra Maps (item/package hash tracking).
Items / packages that are completely idle between emits add ZERO bytes to
the IPC payload now, instead of ~450 bytes per item. For a normal queue of
5000 items where ~30 are actively downloading, payload drops from ~3.6 MB
to ~30 KB per emit — a 100x reduction.
Tests: 140/140 download-manager + 133/133 storage+auto-rename green.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Five more low-risk hot-path optimizations:
1. visiblePackages no longer re-runs the sort callback on every item update.
The sort is only meaningful when running && autoSort && >1 packages, so we
pass null as items dep otherwise. Previously fired the full O(N) sort
pass on every progress tick even when it would have returned the input
array unchanged.
2. ItemRow memoizes formattedCreatedAt + displayStatus + statusTitle so a
row that re-renders because of progress/speed changes no longer pays for
formatDateTime() and computeDisplayedItemStatus() twice (title+body).
3. resetSessionTotalsIfQueueEmpty: removed redundant Object.keys() check.
itemCount + packageOrder.length cover the same condition without
allocating two intermediate arrays.
4. markQueuedAsReconnectWait: replaced Object.keys() array allocation with
for-in iteration when runItemIds is empty. Saves a 5000-element string
array allocation every 900ms during reconnect.
5. columnOrderJson useEffect dep: replaced JSON.stringify with cached
join() + useMemo. Stringifying a 7-element settings array on every
render was ~2-3ms per render for nothing.
All 140 download-manager tests green. Renderer + main both build clean.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Major optimizations to reduce UI lag with large queues (5000+ items):
1. ItemRow extracted to its own memoized component (renderer)
Previously every package re-render mapped all its items inline,
producing N×M re-renders per state update. Now each item-row only
re-renders when ITS specific data changes, with custom equality on
the visible fields (status, progress, speed, fullStatus, etc.).
Also adds stable useCallback handlers per item.
2. PackageCard stats consolidated into single useMemo (renderer)
Replaces 5 separate filter()/some() + 2 reduce() calls (O(7N)) with
one O(N) pass collecting all aggregates (done/failed/cancelled/
extracted/extracting/activeProgress/extractingProgress).
3. selectedIds memo comparator fixed (renderer)
Custom equality now checks if selection state changed for items in
THIS package only. Previously any selection anywhere broke memo on
all 200+ visible PackageCards.
4. Scheduler single-pass queue presence (main)
New getQueuePresence() returns hasImmediate + hasDelayed in one
iteration. Replaces hasQueuedItems() + hasDelayedQueuedItems() that
each scanned packages independently. Saves one full O(n) iteration
per scheduler tick.
No functional changes. All 565 tests green.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Three low-risk optimizations that reduce CPU/memory footprint without
changing user-visible behavior:
1. Periodic cleanup of unbounded module-level Maps (24/7 stability):
- debridLinkKeyCooldowns, debridLinkKeyCooldownDetails,
debridLinkKeyRuntimeStatuses (debrid.ts)
- megaDebridAccountCooldowns (debrid.ts)
- allDebridHostInfoCache (download-manager.ts)
- All pruned every 10 min via existing resetStaleRetryState() with a
1h grace window for debugging
- Without this, modules accumulated entries indefinitely over days
of continuous server operation
2. Hoist regex literals in resolveArchiveItemsFromList() to module scope.
Avoids 5 RegExp constructions per call. The function is called per
archive set during extraction discovery — adds up on packages with
many archives.
3. BandwidthChart: skip the 250ms redraw interval while the session is
stopped or paused. The chart renders once on state change to show the
latest history, then sleeps until downloads resume. Saves 4 canvas
redraws per second when idle (renderer CPU).
No functional changes. All 565 tests green.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- notDebrid (host-level) no longer burns all keys: stops rotation immediately
with 5min cooldown instead of cycling through all 9 keys pointlessly
- Remove double provider-blockade: debrid_link_cooldown no longer stacks
recordProviderFailure + applyProviderBusyBackoff on top of key cooldowns
- Detect timeout cascades: 2+ consecutive transport failures trigger 3min
cooldown instead of burning remaining keys
- Case-sensitive rename: files with different casing (e.g. lowercase scene
names) now get properly renamed instead of being skipped as "already matching"
- Extended sample filter: detect -s.mkv suffix and \Sample\ subdirectories
in auto-rename (already worked in MKV-move)
- Add key status display with state pills in Debrid-Link key stats popup
- Add parseDebridLinkTerminalFailure for fast-fail on exhausted keys
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Replace the raw login:password textarea with a proper form-based UI:
- Individual Login + Password input fields with "Hinzufügen" button
- List of configured accounts with masked logins and "Entfernen" button
- Duplicate login detection
- Storage format unchanged (megaCredentials stays login:password pairs)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Multiple Mega-Debrid accounts can now be configured as login:password
pairs (one per line). When an account hits Fair-Use limits or errors,
the next account is tried automatically.
- New parser module mega-debrid-accounts.ts (parse, ID generation,
masking, serialization)
- Per-account daily limits, usage tracking, enable/disable
- Account rotation with per-mode cooldowns (API failures don't
block Web attempts)
- Backward compatible: existing single megaLogin/megaPassword
is auto-migrated to the new format
- UI: textarea for credentials, account list with masked logins
Follows the existing Debrid-Link multi-key pattern.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Items incorrectly marked as "completed" by the old 50% recovery threshold
persist in the session file across updates. On startup, check all completed
items: if the file on disk is smaller than expected totalBytes, reset to
"queued" so it gets re-downloaded. Also reset items whose files are missing.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Backup redesign (JDownloader 2 style):
- AES-256-GCM encrypted .mdd format with fixed app key
- All credentials exported (no more ***-masking), works on any PC
- Includes settings, session AND history in backup
- Backward-compatible: auto-detects legacy JSON backups
- Normalize history entries on import
- Added debridLinkApiKeys, linkSnappy credentials to sensitive keys
Hide extracted items:
- New setting: hide completed/extracted items from package item list
- Items still count in progress stats (done/total), only hidden in UI
- Default: enabled
- Toggle in settings: "Entpackte Items in Paketliste ausblenden"
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Multiple accounts from the same provider are now merged:
"Debrid-Link (#3), Debrid-Link (#4)" becomes "Debrid-Link (#3 + #4)"
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Daily traffic limits:
- Per-provider daily download limit (configurable in GB per provider)
- Per Debrid-Link API key daily limit (individual limits per key)
- Usage tracking with automatic daily reset at midnight
- Provider is skipped when daily limit reached, falls back to next provider
- Reset button per provider and per Debrid-Link key in account settings
- Hoster routing skips daily-limited providers gracefully
Debrid-Link multi-key improvements:
- Keys now display with labels (#1, #2...) and masked tokens in account list
- Option to show detailed per-key view with individual usage stats
- Keys that hit their daily limit are automatically skipped
- providerAccountId/providerAccountLabel stored per download item
Auto-sort packages by progress:
- Active packages automatically sorted to top during downloads
- Sorted by completion ratio, then downloaded bytes
- Toggle in settings (autoSortPackagesByProgress)
UI polish:
- Package column headers: flatter, more transparent design
- LinkSnappy mode label: "Login" renamed to "Web"
- Account list: new toggle for detailed Debrid-Link key display
- Account usage stats section with warning styling
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
All ? placeholders in App.tsx replaced with correct UTF-8 umlauts
(ä, ö, ü, ß). File is now properly encoded as UTF-8.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- extractor: detect UnRAR "Cannot create...\..." error (archive with
leading-backslash internal paths) and retry in flat mode (-e) which
strips all paths and avoids the invalid double-separator on Windows
- types/download-manager: add providerLabel field to DownloadItem,
store full label (e.g. "Debrid-Link #1") set at unrestrict time
- App: display providerLabel in Service column (falls back to generic
provider name if label not yet set)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Replace fixed primary/secondary/tertiary slots with unlimited ordered
providerOrder: DebridProvider[] list; supports as many accounts as needed
- Provider list reorderable via up/down buttons in Accounts settings tab
- Migration: derives order from legacy primary/secondary/tertiary if empty
- Mega-Debrid split into megadebrid-api and megadebrid-web as separate providers
- Add per-hoster routing (hosterRouting) to assign specific debrid provider per hoster
- Fix duplicate MKV files in library: filter out sample files from Sample subfolders
- Remove legacy provider-selection dropdowns from hidden settings section
- Add CSS for provider-order-list/row/num/label/actions classes
- Update debrid tests: add providerOrder: [] to use legacy fallback path
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- New settings field hosterRouting maps file hosters to specific debrid providers
- 27 known hosters predefined (Rapidgator, Uploaded, Turbobit, Nitroflare, etc.)
- Custom hoster support via prompt dialog
- Routing takes priority over default provider chain
- Falls back to normal chain on error when autoProviderFallback is enabled
- Logs routing decisions: "Hoster-Zuordnung: rapidgator → Debrid-Link"
- Full UI section in settings with add/remove/change provider per hoster
- Storage validation and normalization for hosterRouting
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add LinkSnappy provider with cookie-based session auth and /api/linkgen
- Upgrade LinkSnappy download URLs from http to https (fix 425 errors)
- Add account deactivation toggle (disabledProviders in settings)
- Show account type (API/Web/Login) in provider dropdowns
- Show API key count for Debrid-Link in status label
- Fix all missing German umlauts throughout the UI
- Wider modal for textarea, compact action buttons in one row
- Debrid-Link: log which API key (#1/#2) is used for unrestrict
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- New DebridLinkClient with automatic API key rotation on quota errors
(maxLink, maxLinkHost, maxData, maxDataHost, maxAttempts, maxTransfer)
- Multi-account support: comma or newline-separated API keys
- Full UI integration: account settings, provider dropdowns, summary display
- Safe fallback for undefined debridLinkApiKeys on settings upgrade
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
