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I've detected changes to the following themes in this PR: Timestream.
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• Preview changes for Timestream

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@henriqueiamarino, here are my notes. There are fewer issues to note in this theme. Good job, man!

• In the header template part, the site title is floating, and the negative margin makes a little awkward misalignment. Was it intentional?
  
• The header overall has room for improvement.
  
  
  
• It'd look neater if the alignments were tighter.
  Front of the site
  Editor
• Let's add a pagination and a no-results block with the usual helpful text to the archives, index, and search results templates.
• A link at the bottom of the query loop block on the blog home template, would provide a better continuity.
  
• You can remove the system font registration from the theme.json as it's not used in the theme.
• Remove rena-vf.woff2 from /assets/fonts/neutral-sans/.
• Let's fix the sizes for those sizes.
  
• The footer template part has the credit that needs to be internationalized. Resaving the theme should fix it.
• Remove the patterns/header.php, patterns/index.php patterns/page.php
• The tree's image is actually on the blog home template, so we could say that instead of Images for theme screenshot: in the readme.txt.
• I've pointed out this a few times before, but we can't use different cases or two-word-with-a-space tags as theme tags. Remove the following, Custom Colors, custom-menu, Custom Logo, Editor Style, Featured Images, Site Editor, Block Editor Patterns, Theme Options, Wide Blocks, Two Columns, Three Column
• Instead, add featured-images, wide-blocks, two-columns, three-columns, block-styles, full-site-editing, and style-variations.
• It'd be good to run the theme check plugin before adding a theme with a PR to catch the problem with the theme tags above.
  

Thanks, @iamtakashi.

• When I designed this, my mobile view was very different. Something was updated, which must have broken my layout idea. It's now fixed;
• Alignments throughout the Home were fixed. I found the issue and changed the Footer to suit the body;
• Removed the system font register and deleted the font standing in the wrong folder;
• Fixed the preset sizes;
• Remove the patterns/header.php, patterns/index.php patterns/page.php;
• Updated the readme.txt credit line;
• Update all the tags.

You're right about the Theme Check plugin. I forgot about it. It's been a long time since I launched a theme from scratch. As the plugin was not part of the backlog work, I hardly used it. Anyway, I'll use it from now on.

Thanks for the update! It looks like resaving the theme with CBT didn't make a footer pattern. I've edited the footer (nothing has changed; I just added and removed a period, so the editor thinks I've changed the footer template pattern) and resaved the theme with CBT to create the footer pattern. I also cleaned up the theme tag.

I think this is good to go. I'll merge this and launch it on dotcom.