Ember 6.10 upgrade

[ef4]

This is extracted out of the vite branch.

[github-actions]

Preview deployments

• Host staging preview
• Host production preview
• Boxel UI staging preview

[github-actions]

Host Test Results

    1 files  ±  0      1 suites  ±0   3h 9m 39s ⏱️ + 1h 11m 1s
1 330 tests  - 600  1 304 ✅  - 610  10 💤  - 5   0 ❌ ± 0  16 🔥 +15 
2 674 runs  +729  2 558 ✅ +630  20 💤 +5  48 ❌ +47  48 🔥 +47 

For more details on these errors, see this check.

Results for commit af0109a. ± Comparison against base commit f4bc405.

This pull request removes 652 and adds 52 tests. Note that renamed tests count towards both.

Chrome ‑ Acceptance | AI Assistant tests: ai assistant panel width persists to localStorage
Chrome ‑ Acceptance | AI Assistant tests: creates new session with settings even when empty new session exists
Chrome ‑ Acceptance | AI Assistant tests: handles summarization error gracefully when creating new session
Chrome ‑ Acceptance | AI Assistant tests: restores chat input of unsent messages
Chrome ‑ Acceptance | AI Assistant tests: shows an error and persists the prompt in case the message failed to send
Chrome ‑ Acceptance | AI Assistant tests: skip button skips session preparation and shows correct wording
Chrome ‑ Acceptance | AI Assistant tests: summarizes current session when creating new session with option checked
Chrome ‑ Acceptance | AI Assistant tests: summarizes current session with cards and files when creating new session
Chrome ‑ Acceptance | Commands tests > command-runner: route captures command runtime error
Chrome ‑ Acceptance | Commands tests > command-runner: route renders command result card
…

Chrome ‑ Acceptance | file chooser keyboard tests: ArrowDown moves the cursor through the file list
Chrome ‑ Acceptance | file chooser keyboard tests: ArrowUp from the first item keeps the cursor on the first item
Chrome ‑ Acceptance | file chooser keyboard tests: file list area is focused when the modal opens
Chrome ‑ Acceptance | file chooser keyboard tests: file list area is focused when the modal reopens
Chrome ‑ Acceptance | file chooser keyboard tests: individual file buttons are not in the tab order
Chrome ‑ Acceptance | file chooser keyboard tests: type-ahead cursor updates as more characters are typed
Chrome ‑ Acceptance | file chooser keyboard tests: typing in the file list moves the cursor to the first matching file
Chrome ‑ Acceptance | file chooser keyboard tests: typing moves the cursor to a matching entry
Chrome ‑ Acceptance | file chooser tests: can drag and drop a file into chooser modal and see workspace feedback
Chrome ‑ Acceptance | file def: a rendered card still reloads when its source file is loaded as file-meta
…

♻️ This comment has been updated with latest results.

[ef4]

Next step here is to pick one of the remaining host test failures and dig into it. Many probably share the same few causes.

I was investigating Integration | ai-assistant-panel | sending: displays retry button for message that failed to send and ran out of time before getting to the bottom of it.