docs: update truenas migration section to include chown

[thraizz]

Description

Added step to explain necessary ownership change of the Seerr folder after starting Seerr for the first time when migrating TrueNAS.
Without this, the first start of Seerr will just result in a lot of "EACCES: permission denied"

How Has This Been Tested?

Did not test changes. Its a simple doc change, i did not set up a dev environment for this.
I clicked the Edit On Github button in the docs, edited it, opened this PR.

Checklist:

• I have read and followed the contribution guidelines.
• Disclosed any use of AI (see our policy)
• I have updated the documentation accordingly.
• All new and existing tests passed.
• Successful build pnpm build
• Translation keys pnpm i18n:extract
• Database migration (if required)

Summary by CodeRabbit

Summary by CodeRabbit

• Documentation
  • Updated the TrueNAS SCALE “ixVolume” migration guide to ensure migrated files are assigned the correct directory ownership during the rsync copy step.

[coderabbitai]

📝 Walkthrough

Walkthrough

The TrueNAS SCALE ixVolume migration guide now copies data into /mnt/storage/seerr/ with rsync --chown=568:568, applying ownership during the transfer.

Changes

TrueNAS SCALE ixVolume Migration

Layer / File(s)	Summary
Ownership applied during ixVolume copy docs/migration-guide.mdx	The rsync command for copying ixVolume data into /mnt/storage/seerr/ now includes --chown=568:568.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• seerr-team/seerr#3107: Also changes docs/migration-guide.mdx in the TrueNAS ixVolume migration section.

Suggested reviewers

• M0NsTeRRR
• gauthier-th
• fallenbagel

Poem

🐰 I hopped through the guide with a tug and a turn,
A --chown spell made the copy duly earn.
Soft paws, neat files, and ownership true,
One tiny edit, and the path is all blue.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly matches the docs change about adding chown to the TrueNAS migration section.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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[M0NsTeRRR]

Does /mnt/.ix-apps/app_mounts/jellyseerr/ belong to the apps user, and does the rsync command update file permissions to root?
If so, you can use the -p flag with rsync to preserve permissions it’s the easiest way to handle this.

[thraizz]

No, the .ix-apps/ folder and all subfolders belong to root already so preserving is not enough here, sadly.

[thraizz]

But i looked into the rsync man page and we can use --chown=568:568, so i will update to use this instead!

[thraizz]

@M0NsTeRRR updated to use --chown=568:568 so we can skip the extra chown! :)

[M0NsTeRRR]

@thraizz can you fix the template issue #3143 (comment)

[thraizz]

@thraizz can you fix the template issue #3143 (comment)

Done, hope this is fine like this