docs: add Discord community badge

[yyiilluu]

Summary

• Make the community Discord visible from the claude-smart README header.
• Keep the invite available in the existing Support section for readers looking for help.

Changes

• Added a Discord Shields.io badge to the top README badge block.
• Added the Discord invite to Support.

Test Plan

• git diff --check origin/main...HEAD

Summary by CodeRabbit

• Documentation
  • Added Discord community badge and link for easier discovery.
  • Updated Support section with direct Discord community join link.

[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: 1477be2d-ad38-4719-ba81-2ae5658d0a57

📥 Commits

Reviewing files that changed from the base of the PR and between b197536 and 31f2644.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

README.md receives two Discord-related additions: a "Join community" badge/link inserted into the header badge row, and the Support section's Discord bullet updated to include a direct hyperlink to discord.gg/7fnCxahase.

Changes

Discord Community Links in README

Layer / File(s)	Summary
Discord badge and support link README.md	Adds a Discord Join Community badge to the header badge row and updates the Support section Discord bullet with a direct link to discord.gg/7fnCxahase.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• ReflexioAI/claude-smart#33: Also modifies the Discord badge entry in the README.md header, making it directly related to the badge changes in this PR.

Poem

🐇 Hop along, join us today,
A badge now gleams in the header's ray!
Click the link, don't be shy,
Discord awaits beneath the sky.
The warren grows — come say hi! 🎉

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'docs: add Discord community badge' directly and accurately summarizes the main change in the pull request—adding a Discord community badge to the README.
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 codex/add-discord-community-badge

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