Changelog

DataPlugin.GetMetricsAsync was querying duckdb_tables() which no longer

exists after the DuckDB → SQLCipher migration. Replaced with

sqlite_master query to find dataset tables (ds_* pattern).

SQLite doesn't expose per-table byte sizes like DuckDB did, so the

method now returns a set of existing table names and the caller uses

the existing row-count × column-count heuristic for all tables.

• Rename QueryDuckDbTableSizesAsync → QueryDatasetTablesAsync
• Return HashSet<string> instead of Dictionary<string, long>
• Query sqlite_master WHERE type='table' AND name LIKE 'ds_%'
• Fix stale DuckDB references in comments
• Bump Data plugin 1.21.1 → 1.21.2

The ToggleSwitch for enabling/disabling plugins was invisible because

ToggleSwitch in Avalonia does not have Command/CommandParameter properties.

The XAML parser silently dropped the invalid attributes, preventing the

control from rendering.

• Remove invalid Command/CommandParameter from ToggleSwitch
• Switch to two-way IsChecked binding on IsActivated property
• Add OnActivationChanged callback on DashboardPluginItem that fires

when IsActivated changes from the ToggleSwitch

• Wire callback in PopulateLocalPlugins AFTER setting initial value

to avoid re-entrant enable/disable calls during initialization

• Add OnPluginActivationChanged handler that syncs to plugin registry

Also cleans up SubsystemTracker: removed broken heartbeat approach for

long-running task alloc tracking (GC.GetAllocatedBytesForCurrentThread

cannot be queried cross-thread after await resumes on a different thread).

The "Native Memory" summary card was showing only Rust allocator-tracked

bytes (~126 B), which is misleading when the process uses ~1.4 GB native.

The Rust GlobalAlloc only tracks Rust heap allocations — C/C++ libraries

(SQLCipher, ONNX, Whisper, LLamaSharp) use their own malloc directly.

• Summary "Native Memory" card now uses WorkingSet64 - GC heap (same

calculation as the Overview tab's memory card)

• Per-subsystem memory column renamed to "Tracked Memory" and widened

to accommodate labels like "126 B native" or "7.0 MB managed"

• Memory display now distinguishes native vs managed with explicit labels
• Column widths adjusted (Category 80, Tasks 60, Memory 180, Rate 100)
• Removed broken heartbeat approach for long-running task alloc tracking

(GC.GetAllocatedBytesForCurrentThread can't be queried cross-thread)

Root cause: when a plugin is disabled, its assembly is deferred (not

loaded) at startup to save memory. But the Settings plugin list only

iterated over loaded plugins (_plugins), so deferred plugins were

invisible — the user could never re-enable them.

Fix:

• Expose DeferredPluginDirs on IPluginRegistry — maps plugin IDs to

their discovered directory paths for plugins that were skipped

• SettingsViewModel.LoadPluginItems() now appends deferred plugins to

the list with IsEnabled=false, allowing the user to toggle them on

• Toggling on triggers the existing EnablePlugin() deferred path which

dynamically loads the assembly from the saved directory

• HeadlessPluginRegistry implements the new property with an empty dict

Root cause: on fresh install (no salt file, no existing DB), init_core()

opened an unencrypted on-disk database at data.privstack.db. When

auth_initialize() then tried to create an encrypted DB at the same path,

SQLCipher failed because the file already existed as unencrypted.

Fix (Rust FFI):

• Fresh install now opens in-memory placeholder (same as encrypted mode)
• Only open unencrypted on-disk for legacy databases that already exist
• auth_initialize detects legacy unencrypted DB and skips SQLCipher

creation, just initializes vault on the existing DB

Fix (C# Desktop):

• WorkspaceService: base path changed from "data.duckdb" to "data"

(Rust derives "data.privstack.db" via with_extension)

• SetupWizardViewModel: same path change
• PrivStackService: updated diagnostics to check .privstack.db,

.datasets.db, .privstack.salt instead of old .duckdb files

• App.axaml.cs: updated orphan cleanup patterns and diagnostics
• DashboardViewModel: updated file size checks and compact display
• SystemMetricsService: updated file paths, WAL suffix (.wal → -wal)