Root cause: Every GraphicsUpdate copied the full 8.3MB decoded image
into the front buffer, cloned all 8.3MB for IPC, and transferred all
8.3MB to the frontend — even when only a 100x100 pixel region changed.
During window drag, this created a 25MB/frame pipeline backup.
Fix:
- Track dirty rectangles from ironrdp's GraphicsUpdate(InclusiveRectangle)
- Write path: only copy changed rows from decoded image to front buffer
(e.g. 100 rows × 1920 pixels = 768KB vs 8.3MB full frame)
- Accumulate dirty region as union of all rects since last get_frame
- Read path: if dirty region < 50% of frame, extract only the dirty
rectangle bytes; otherwise fall back to full frame
- Binary IPC format: 8-byte header [x,y,w,h as u16 LE] + pixel data
- Frontend: putImageData at dirty rect offset instead of full frame
- Status bar: h-9 text-sm for 3440x1440 readability
During window drag (typical 300x400 dirty rect):
Before: 8.3MB write + 8.3MB clone + 8.3MB IPC = 24.9MB per frame
After: 480KB write + 480KB extract + 480KB IPC = 1.4MB per frame
~17x reduction in data movement per frame.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Popup windows (tools/editor/help):
- CSP script-src 'self' blocked Tauri's inline IPC bridge scripts in
child WebviewWindows. Added 'unsafe-inline' to script-src. Still
restrictive (was null before SEC-4).
Theme application:
- Watcher on sessionStore.activeTheme needed { deep: true } — Pinia
reactive proxy identity doesn't change on object replacement
- LocalTerminalView.vue had ZERO theme support — added full applyTheme()
with watcher and mount-time application
- Container background now syncs with theme (was stuck on CSS variable)
Cursor blink:
- terminal.focus() after mount in useTerminal.ts — terminal opened
without focus, xterm.js rendered static outline instead of blinking block
Selection highlighting:
- applyTheme() was overwriting theme without selectionBackground/
selectionForeground/selectionInactiveBackground — selection invisible
after any theme change
- Removed !important from terminal.css that overrode canvas selection
- Bumped default selection opacity 0.3 → 0.4
Status bar:
- h-6 text-[10px] → h-8 text-xs (24px/10px → 32px/12px)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Rust SSH service: russh async client, DashMap session registry,
TOFU host key verification, CWD tracking via separate exec channel
(never touches terminal stream), base64 event emission for terminal
I/O. 52/52 tests passing.
Vue 3 frontend: ported from Wails v3 to Tauri v2 — useTerminal
composable with streaming TextDecoder + rAF batching, session store
with multi-connection support, connection store/tree, sidebar, tab
bar, status bar, keyboard shortcuts. All Wails imports replaced
with Tauri API equivalents.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
