Preserve layout with invisible placeholders while worker highlighting loads
Reuse cached highlighted lines on first render when available
Differentiate loading from failed highlighting results for better fallback behavior
* fix(ui): update session-switch-resync test to current handleEvent/setSessionTodos signatures
Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>
* perf(build): split Shiki grammars/themes, CodeMirror legacy modes, and @pierre/diffs into on-demand chunks
Merging @shikijs/langs into one manual vendor chunk made the first language
request download every grammar (7.4 MB raw / 1 MB gzip). Letting Rollup split
these packages per dynamically imported module downloads only the languages,
themes, and modes actually used — matching how the worker build already
behaves. @pierre/diffs is split the same way so its pure patch parser (used by
the eager tool renderer) no longer drags the Shiki-importing render stack into
the startup graph.
Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>
* perf(ui): restore lazy heavy views and stop eager settings-graph loading
- MainLayout: DiffView/FilesView/GitView/PlanView return to lazyWithChunkRecovery
(they were silently made static in 2031e3b4 while their Suspense wrappers
remained), keeping the CodeMirror and @pierre/diffs stacks out of startup.
- ContextPanel: same lazy treatment for its Diff/Files/Git/Plan/Walkthrough
tabs, with null Suspense fallbacks.
- CommandPalette imported getSettingsNavIcon from SettingsView, statically
pulling the entire settings surface (SkillsPage -> CodeMirrorEditor -> vim
mode, theme registry -> @pierre/diffs) into the eager graph; the helper now
lives in lib/settings/metadata.
- The windowed SettingsWindow mounts only after its first open: rendering the
lazy component closed made React fetch the SettingsView chunk graph at
startup.
Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>
* perf(ui): keep @pierre/diffs + Shiki out of the eager chat graph and defer diff worker warmup
- DiffWorkerProvider no longer statically imports @pierre/diffs/worker or the
theme registry, and no longer spawns 3 workers plus a main-thread shared
highlighter during mount. Pools are created on demand through a dynamic
module load, warmed via requestIdleCallback after startup settles, and
useWorkerPool notifies consumers when a pool becomes available.
- ToolPart's rich diff preview moves to lazily loaded ToolPartDiffPreview;
the plain-text patch (PlainDiffFallback) renders while the chunk loads,
mirroring the existing error fallback. Theme registration happens during
render inside the lazy module so PatchDiff never renders unregistered ids.
- ChatInput mounts its lazy ToolOutputDialog only after the first attachment
preview opens instead of fetching the dialog chunk on the draft screen.
- getMarkdownSyntaxVars moves to a pierre-free markdownSyntaxVars module so
eager code-rendering consumers stop importing the registration module.
Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>
* perf(web): load ghostty-web and Nerd Fonts on first terminal use
- ghostty-web (638 KB raw JS + WASM VT) is dynamically imported when a
terminal actually mounts; TerminalView stays eagerly importable for the
bottom dock.
- The ~2 MB of CDN Nerd Fonts are no longer preloaded and force-loaded on
every cold start. index.html exposes an idempotent
__openchamberEnsureNerdFonts hook; TerminalViewport requests it on mount
and waits up to 2s so a cached font is in place before the glyph atlas is
built, while a cold CDN fetch never blocks the terminal. Runtimes without
the hook (VS Code, mobile) resolve immediately, matching their existing
fallback-font behavior.
Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>
---------
Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>
Route all non-markdown code highlighting through the off-main-thread Shiki
worker, removing react-syntax-highlighter and prismjs entirely.
- Extend the worker with highlightLines: tokenize a whole block once and return
per-line inner HTML, so per-line layouts (diffs, gutters, virtualization) make
one worker call instead of one highlighter per line.
- Add shared WorkerHighlightedCode (whole-block) and useWorkerHighlightedLines
(per-line) primitives. Colors resolve via the --md-syntax-* CSS variables, so
theme changes never re-highlight.
- Migrate all 12 react-syntax-highlighter call sites: PermissionCard,
ToolPart, ContextSidebarTab, ToolOutputDialog (whole block) and
DiffPreview/WritePreview (per line).
- Migrate VirtualizedCodeBlock off prismjs to the worker, keeping virtua
virtualization; whole-block tokenization also restores cross-line syntax
context that per-line highlighting lost.
- Drop react-syntax-highlighter (+types) from ui and web, prismjs (+types) from
ui, and the orphaned create-element type shim.
Bohdan Triapitsyn