Simplify README compatibility guidance

[patrickhaoy]

Summary

• Replace the release paragraph with two short compatibility sentences.
• Remove commit hashes and installer details from the README; actual dependency pins and safeguards are unchanged.
• Documentation only. The published v2.0.0 commit and tag remain untouched.

Test plan

• Pre-commit checks
• Strict documentation build
• Diff limited to README.md

[greptile-apps]

Confidence Score: 4/5

[Low risk] Simplifies README compatibility section.

The documentation-only PR appears safe to merge, though two compatibility details would benefit from concise clarification.

Summary

The PR condenses the README’s release guidance into two compatibility sentences without changing installation behavior.

• The shorter text loses the UW-Lab qualifier for RSL-RL and the caution against mixing legacy artifacts with the 3.0 stack.

_{Reviews (1) · Last reviewed commit: "Simplify README compatibility guidance"}