Changelog

Add a DispatcherTimer that refreshes memory usage (WorkingSet64,

GC heap), data storage totals (DuckDB file sizes), and detailed

storage breakdown every 5 seconds while the Dashboard tab is active.

The timer starts on OnNavigatedToAsync and stops on OnNavigatedFrom,

so it only polls while the Dashboard is actually visible. Uses the

existing SystemMetricsService for memory and GetDataMetricsAsync for

storage — both are lightweight local-only operations.

Bump Dashboard plugin version 1.3.0 → 1.4.0.

When the user toggles AI off in settings, the ONNX embedding model

(InferenceSession + tokenizer) and local LLM weights (LLamaWeights +

LLamaContext) were staying resident in memory because nothing called

Dispose or released the native resources. This caused ~1.7GB+ of

memory to persist even after AI was disabled.

Changes:

• Add EmbeddingService.UnloadAsync() — disposes the ONNX session and

tokenizer without permanently disposing the service, so it can be

re-initialized later via InitializeAsync()

• Add LocalLlamaProvider.UnloadModelAsync() — same pattern for the

LLama weights and context

• Add IEmbeddingService.UnloadAsync() to the interface contract

(+ HeadlessEmbeddingService no-op stub)

• Wire OnAiEnabledChanged(false) to call UnloadAiModelsAsync() which

releases both models and nudges GC to reclaim native buffers

• Add RagIndexService + EmbeddingService disposal to

MainWindowViewModel.Cleanup() for clean app shutdown

Root cause: RefreshAsync populated AllPlugins AFTER awaiting

IsOnlineAsync(), which used PluginInstallService's 5-minute timeout

HttpClient for a simple health check. When privstack.io was slow or

unreachable, the entire dashboard sat on "Loading..." for minutes

with nothing rendered.

Fix: Split RefreshAsync into three phases:

1. PopulateLocalPlugins() — instant, no network. Builds AllPlugins

from filesystem manifests + IPluginRegistry.Plugins (the actually

loaded plugins). Sets IsLoading=false immediately so plugins render.

2. LoadSystemMetricsAsync() — local metrics (disk sizes, memory).

3. TryFetchRemoteRegistryAsync() — non-blocking enrichment with

server data. If it fails, local plugins are already displayed.

Also added a 5-second CancellationToken timeout to IsOnlineAsync()

so the health check doesn't inherit the 5-minute download timeout.

The previous fix handled the API timeout gracefully but the dashboard

still showed 0 plugins because GetInstalledVersions() only scans

~/.privstack/plugins and bundled plugin directories for manifest.json

files. In dev mode (project references) and when plugins are loaded

from non-standard paths, no manifests exist in those directories.

Added a fallback that populates AllPlugins from IPluginRegistry.Plugins

— the actually loaded/running plugins — for any plugin not already

covered by the server registry or filesystem manifests. This ensures

the dashboard always shows all active plugins with their metadata

regardless of how they were loaded.