Changelog

Add ALTER COLUMN SET DATA TYPE support for datasets. The Rust store validates

the target type against a whitelist of known DuckDB types, executes the DDL,

and refreshes column metadata. The FFI layer exposes the operation as

privstack_dataset_alter_column_type returning PrivStackError. The SDK adds

AlterColumnTypeAsync to IDatasetService, with P/Invoke binding and service

implementation following the existing DropColumn/RenameColumn pattern. This

enables the Data plugin to let users change column types after import via

a confirmation overlay.

Systematic sweep across all AXAML files replacing hardcoded values:

• Modal backdrops: replaced inline #80000000 with Classes="modal-backdrop" (8 files)
• Modal card shadows: replaced inline BoxShadow with Classes="modal" (8 files)
• DashboardView: replaced 10x identical BoxShadow with Classes="shadow-sm"
• MainWindow: banner #E53E3E -> ThemeDangerBrush, Foreground="White" -> ThemeTextPrimaryBrush, raw FontSize -> theme resources
• SensitiveUnlockOverlay: #E0181820 -> modal-backdrop, #30F38BA8 -> ThemeDangerMutedBrush, Foreground="White" -> ThemeTextPrimaryBrush
• PasswordConfirmationWindow: BoxShadow -> modal class, #30F38BA8 -> ThemeDangerMutedBrush
• SettingsPanel: FontSize="18" -> ThemeFontSizeXl, Foreground="White" -> ThemeTextPrimaryBrush
• GraphView tags: #9CA3AF -> ThemeTextMutedBrush
• EmojiPicker/SkinTonePopover: backdrop and shadow -> theme classes

Added to PrivStackTheme.axaml:

• modal-backdrop-light class (#40000000) for lighter overlays
• shadow-sm, shadow-md, shadow-lg utility classes for shadow-only application
• Updated modal-backdrop to #80000000 matching actual modal usage

Add two new shared controls to PrivStack.UI.Adaptive for enforcing

consistent styling across the app:

ThemedDropdown: Wraps a native ComboBox with standardized theme-aware

styling. Supports three size variants (Standard/Compact/Dense) with

enforced padding and corner radius. Properties include ItemsSource,

SelectedItem (TwoWay), SelectedIndex (TwoWay), PlaceholderText,

ItemTemplate, ShowBorder, and MaxDropDownHeight. Uses

GetResourceObservable for Background/Foreground auto-tracking and

ActualThemeVariantChanged for border/radius updates. Includes

re-entrancy guard for selection sync between the outer control

properties and the inner ComboBox.

IconLabel: Horizontal or vertical icon+text pair with optional

PathIcon and TextBlock. Hides icon when IconData is null, hides

text when Text is null/empty. Foreground defaults to

ThemeTextPrimaryBrush via resource observable when not explicitly

set. FontSize defaults to ThemeFontSizeSmMd (sentinel value 0)

for automatic theme binding. Supports configurable IconSize,

Spacing, FontWeight, and Orientation.

Both controls follow the existing PluginToolbar pattern: inherit

Border, compose children in constructor, forward StyledProperties

via OnPropertyChanged, and manage theme lifecycle via

OnAttachedToVisualTree/OnDetachedFromVisualTree.

SDK version: 1.36.0 -> 1.37.0

Desktop version: 1.33.5 -> 1.33.6

Plugins managing multiple entity types (e.g., Contacts with contact, company,

contact_group) had no way to register deep-link routing for sub-entity types.

Only the primary LinkType was matched, causing navigation failures for secondary

types like contact_group and company in both the neuron graph and info panel.

Added SupportedLinkTypes property with default implementation returning [LinkType]

for backward compatibility, and a NavigateToItemAsync(string linkType, string itemId)

overload so plugins can dispatch to the correct sub-view based on entity type.

Sync order: Changed FetchHeadersBatchedAsync from fire-and-forget

IProgress<T> callback to sequentially awaited Func<T, Task>. Batches

now persist in guaranteed newest-first order. Messages within each

batch and in the incremental sync path are sorted by date descending.

The MessageBatchSynced event now includes EmailAccount and EmailFolder

context for downstream consumers.

Offline body cache: Added EmailBodyCacheService backed by local

filesystem storage under WorkspaceDataPath/email-cache/. Bodies are

device-local and never synced between devices — each device downloads

its own copy directly from the IMAP server. A background Channel-based

download queue processes newly synced message batches (newest first).

The ViewModel checks the local cache before falling back to IMAP for

on-demand body fetches, and caches the result for future offline

access. Cache is cleaned up on account removal.