docs: add Discord badge, tech/platform badges, and Need help link

[EtienneLescot]

Adds a row of dynamic badges to the top of the README (license, latest release, CI status, Discord, stars, tech stack, supported platforms), plus a \Need help?\ callout in the body pointing at the OpenScreen Discord.

Changes

• 4 centered rows of badges under the subtitle (status / community / stack / platforms)
• One-line \Need help?\ link to the Discord right below the badges

Source of truth

• Discord invite: https://discord.gg/VvT6Vtnyh
• All other badges pull from the GitHub repo (license, releases, Actions workflows, stargazers)
• Tech/platform badges are static (Electron / TypeScript / React / macOS / Windows / Linux)

Summary by CodeRabbit

• Documentation
  • Updated the README with a new badge section near the top, including license, release, build status, community, stars, and platform/technology badges.
  • Added a clearer “Need help?” link for quick access to community support.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: b032e07d-8e9c-4742-8d45-173b898eea23

📥 Commits

Reviewing files that changed from the base of the PR and between 0819961 and 3c7cbf2.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

README.md gains a new centered badges row near the top, containing shields.io badge images and links for License, Latest Release, CI status, Discord, Stars, the Electron/TypeScript/React tech stack, macOS/Windows/Linux platform support, and a "Need help?" Discord link line.

Changes

README Badges

Layer / File(s)	Summary
Centered shields.io badges block README.md	Inserts 25 lines of centered HTML/Markdown with shield.io badge images and links covering license, latest release, CI status, Discord, stars, tech stack (Electron, TypeScript, React), supported platforms (macOS, Windows, Linux), and a "Need help?" Discord link.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 A badge here, a badge there,
Shields of glory fill the air!
License, stars, and CI too,
Discord friends in shades of blue.
Hop along — the README's bright,
Every badge a little light! ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description covers the change but misses most required template sections like issue, type, release impact, desktop impact, screenshots, and testing.	Add the missing template sections: related issue, type of change, release impact, desktop impact, screenshots/video, and testing details.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly matches the README badge and Discord help-link additions.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/readme-badges

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