Agents: Refactor SessionsView UI and improve action order

[mrleemurray]

This pull request refactors and improves the Sessions View header in both functionality and visual consistency. The main changes include extracting the "New Session" button logic into a dedicated method for better code organization, updating the header action order, and refining the appearance of the find widget's close button to match other toolbar buttons.

UI/UX Improvements:

• The find widget's close button in the sessions view now matches the size and style of the header toolbar action buttons for a more consistent look (sessionsViewPane.css).

Code Refactoring & Organization:

• The logic for creating the "New Session" button has been moved into a new private method createNewSessionButton, simplifying the main constructor and improving maintainability (sessionsView.ts).
• The header action order is now: New, Filter, Search, for better usability and visual clarity (sessionsView.ts).

Menu and Action Ordering:

• The "Filter Sessions" submenu and "Find Session" action have been reordered in the header menu for improved navigation, with "Filter" now before "Find" (sessionsViewActions.ts).

[github-actions]

Screenshot Changes

Base: 2ac46efe Current: 301e47b3

Changed (2)

chat/aiCustomizations/aiCustomizationManagementEditor/McpBrowseMode/Light

Before	After

editor/inlineCompletions/other/JumpToHint/Dark

Before	After

[Copilot]

Pull request overview

Refactors the SessionsView header actions to improve UI consistency and action ordering in the Agents Sessions window (vs/sessions), including a small styling tweak to better align the find widget close button with toolbar actions.

Changes:

• Reorders header toolbar actions so Filter appears before Search/Find.
• Extracts the “New Session” header button creation into a dedicated helper for cleaner SessionsView construction.
• Adjusts CSS to size the find widget close action to match header toolbar button dimensions.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/vs/sessions/contrib/sessions/browser/views/sessionsViewActions.ts	Reorders SidebarSessionsHeader menu items so Filter precedes Find.
src/vs/sessions/contrib/sessions/browser/views/sessionsView.ts	Extracts/places the “New” session button before the menu-driven toolbar to achieve intended visual order.
src/vs/sessions/contrib/sessions/browser/media/sessionsViewPane.css	Tweaks find widget close action sizing to align with toolbar action button sizing.