Use calendar codicon for automations instead of watch

[Ben Villalobos (benvillalobos)]

Context

The watch codicon for automations reads as a stopwatch/timer, which doesn't match what automations actually are (scheduled recurring sessions). Calendar is a better fit and matches how the feature is described in-product ("Schedule agent sessions to run automatically on a cadence you choose.").

Changes made

• Swapped Codicon.watch → Codicon.calendar everywhere automations render:
  • Automations section header + per-row status icon in the sessions list
  • listAutomations and configureAutomation tool icons (how they render in chat)
  • vscodeAutomations tool set icon
  • "Open automation" button in the chat configured-result view
• Removed the unused automationIcon export from aiCustomizationIcons.ts (dead code — automations moved out of the AI Customization view into their own top-level view).

[Copilot]

Pull request overview

Replaces stopwatch-style automation icons with calendar icons to better represent scheduled sessions and removes a stale icon export.

Changes:

• Uses Codicon.calendar across automation UI and chat tools.
• Removes the unused AI Customization automation icon.

Show a summary per file

File	Description
chatAutomationConfiguredResultSubPart.ts	Updates the automation result button icon.
clientToolSetsContribution.ts	Updates the automation tool-set icon.
aiCustomizationIcons.ts	Removes the obsolete automation icon export.
sessionsList.ts	Updates automation section and status icons.
automationTools.ts	Updates list and configure tool icons.

Review details

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• Files reviewed: 5/5 changed files
• Comments generated: 0
• Review effort level: Balanced