feat(code): use remote files for cloud review panel

[adboio]

Problem

the cloud diff review panel constructs a diff from the agent output. this is fine, but makes it harder to ensure the panel is up-to-date with remote branch or PR, which means it'd be hard to do cooler stuff with PR comments/CI/etc in the future

Changes

swaps out the cloud review panel to always use a diff from the PR or the remote branch, never constructed from agent changes

• agent changes are still visible in realtime in the chat thread
• changed files list in the sidebar still uses agent output for lisitng the files

How did you test this?

manually

[adboio]

• feat(code): show PR comments in review panel #1536
• refactor sending prompt to agent from UI #1539
• chore: add relative time utils #1535
• feat(code): add PR status and actions to cloud tasks #1525
• fix(code): truncate text properly in tool call output #1498
• feat(code): remove right sidebar #1497
• feat(code): tree view for changed files list #1494
• feat(code): use remote files for cloud review panel #1491 👈 (View in Graphite)
• feat(code): remove cloud status bar, add pr view button #1476
• main

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[k11kirky]

I wonder if we should take this same approuch to local tasks once a commit or pr is completed? keep consistaent. make cloud -> local easier and it fixes an issue when post commit you lose all dif for review

[adboio]

@k11kirky yep definitely, i've prioritized cloud for now but will be taking as much of this over to local as i can!

[adboio]

Merge activity

• Apr 7, 3:16 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Apr 7, 3:18 PM UTC: Graphite rebased this pull request as part of a merge.
• Apr 7, 3:26 PM UTC: @adboio merged this pull request with Graphite.