- File preview auto-close: clearPreview() extracted as named function
and called from loadDir(). Navigating directories (breadcrumbs, up
button, folder clicks) now automatically closes the right panel
file preview instead of leaving stale content visible.
- Thinking/reasoning display: assistant messages with structured content
arrays containing type=thinking or type=reasoning blocks now render
as collapsible gold-themed cards above the response text. Collapsed
by default, click header to expand. Works with Claude extended thinking
and o3 reasoning tokens when preserved in the message array.
- Workspace tree view (Issue #22): directories expand/collapse in-place
with toggle arrows. Single-click toggles, double-click navigates
(breadcrumb view). Subdirectory contents fetched lazily and cached.
Indentation shows nesting depth. Empty directories show "(empty)".
S._expandedDirs tracks open state, S._dirCache caches fetched entries.
Tests: 295 passed, 23 pre-existing failures, 0 regressions.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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