docs: add Persian (fa) README translation

[AliiiAm]

Issue for this PR

Closes #

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

Adds a Persian (Farsi) translation of the README as README.fa.md. Persian is spoken by over 100 million people worldwide and was one of the few major languages missing from the project's documentation. The translation follows the same RTL (right-to-left) structure used in the existing Arabic README (README.ar.md), using a <div dir="rtl"> wrapper for proper text direction. A link to the Persian README has also been added to the language list in all existing README files.

How did you verify your code works?

I reviewed the rendered output to confirm the RTL layout displays correctly and that all links, code blocks, and formatting match the structure of the other translated READMEs.

Screenshots / recordings

N/A — this is a documentation-only change with no UI impact.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[github-actions]

Hey! Your PR title Add Persian (fa) translation to README doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

Potential Duplicate Found:

• PR docs: add Persian (Farsi) README translation #28451: "docs: add Persian (Farsi) README translation"
  • docs: add Persian (Farsi) README translation #28451

Why it's related: This PR (#28451) appears to be addressing the exact same feature—adding Persian/Farsi translation to the README. This is a direct duplicate of PR #31264 (the current PR). You should check if #28451 is still open and either close it in favor of the current PR or merge the existing one if it's ready.

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍