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perf: reduce UI render fanout and scroll jitter

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- Cut broad render fanout across the app by replacing shared-store whole-object subscriptions with leaf selectors, memoizing hot chrome boundaries, and isolating disabled global providers from live session/message state. This keeps header controls, composer toolbars, side panels, and other non-hot UI surfaces from repainting on every assistant update or keystroke.

- Rework sidebar session ordering so recent, project groups, and worktree groups derive from one ordering source while avoiding streaming-time thrash. The sidebar now uses a stabilized session snapshot, preserves structural identity for unchanged rows, reads live row status/details per session, and applies a one-shot sort bump on idle->busy instead of continuously resorting during activity.

- Fix chat/input scroll instability by separating viewport-resize handling from message-growth handling, disabling conflicting native scroll anchoring, and stopping textarea autosize from collapsing on every growth keystroke. This removes the multiline typing jiggle during streaming and reduces unnecessary composer rerenders.

- Also gate voice context wiring behind voice-mode enablement and codify the learned render/scroll/order anti-patterns in AGENTS.md so future changes avoid the same classes of regressions.
This commit is contained in:
Bohdan Triapitsyn
2026-04-04 02:19:55 +03:00
parent c5497e9823
commit 8587db89b1
42 changed files with 1713 additions and 1047 deletions
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packages/ui/src/components/chat/AgentMentionAutocomplete.tsx
+3 -2
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@@ -45,8 +45,9 @@ export const AgentMentionAutocomplete = React.forwardRef<AgentMentionAutocomplet
const [agents, setAgents] = React.useState<AgentInfo[]>([]);
const itemRefs = React.useRef<(HTMLDivElement | null)[]>([]);
const ignoreTabClickRef = React.useRef(false);
const { getVisibleAgents } = useConfigStore();
const { agents: agentsWithMetadata, loadAgents } = useAgentsStore();
const getVisibleAgents = useConfigStore((state) => state.getVisibleAgents);
const agentsWithMetadata = useAgentsStore((state) => state.agents);
const loadAgents = useAgentsStore((state) => state.loadAgents);
React.useEffect(() => {
if (agentsWithMetadata.length === 0) {