#7228: chrome.sidePanel POC 3

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Tasks

• Figure out why the mods aren't loading on the first load
• reorganize code because some context expectations aren't clear (sidebar/sidePanel/messenger/api.ts particularly doesn't really use the messenger)
• Use activateOptions in showSidebarFromPageEditor
• drop sequence number
  Tracked in Sidebar changes before the sidePanel migration/merge #7319
• Maybe close sidePanel on action click
  Edit: Can't really find a way
• Fix tests (but maybe that'll fix itself after the MV2 version is merged back in)

Sub-tasks after the sidePanel version is in a satisfactory state

• Merge into MV2 version

Related

• Slice 1: create throw-away Side Panel POC to demonstrate communication between content script and sidebar in Side Panel #7228
• #7228: chrome.sidePanel POC #7232
• #7228: chrome.sidePanel POC 2 #7266

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Progress

Sidebar correctly loads on open

8f36505

Demo

Screen.Recording.mov

AI Copilot side panel always works

Via context menu and locally, if it's closed or already open

Demo

Screen.Recording.2.mov

Favorites links in KB Assist work

Both those that open a new tab or a new panel

Demo

Screen.Recording.3.mov

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Progress

The sidebar mod list is updated when the website is changed

The update is quite slow because the content script is loaded on document_idle

Demo

Screen.Recording.mov

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This should still be working but I won't make any changes here. You can keep using this branch to test the MV3 version and report issues.

The MV2/MV3 compatible version will be completed in another, final PR:

• #7228: Add support for sidePanel in the MV3 build #7354

[twschiller]

Closing in favor of: #7354