Description

This pull request adds a visual aid to the pse module specification to help users better understand the schedule and distribution process.

Documentation improvements:

• Added an embedded Loom video thumbnail and link at the top of x/pse/spec/README.md to illustrate the PSE schedule and distribution mechanism.

Reviewers checklist:

• Try to write more meaningful comments with clear actions to be taken.
• Nit-picking should be unblocking. Focus on core issues.

Authors checklist

• Provide a concise and meaningful description
• Review the code yourself first, before making the PR.
• Annotate your PR in places that require explanation.
• Think and try to split the PR to smaller PR if it is big.

This change is