chore: add .vercelignore + ignore .vercel link state

[rohitg00]

Summary

Two small fixes so the Vercel deploy works without a deploy hook secret.

.vercelignore

Vercel project `agentos` has `rootDirectory=website`. Default `vercel deploy` from repo root uploads everything not gitignored — including `target/` (8GB), `node_modules/` (~130MB), and the rest of the Rust workspace. That exceeds Vercel's 10MB request limit and the deploy fails.

`.vercelignore` scopes the upload to `website/` only.

.gitignore

Adds `.vercel` so contributor-local link state stays out of git.

Context

Today's prod deploy succeeded once `.vercelignore` was in place. Without committing it, every contributor running `vercel deploy` from the repo root will hit the same limit.

Test plan

• `vercel deploy --prod` succeeded with this ignore in place — agentsos.sh now serves the redesigned site
• Future contributor runs `vercel deploy` after linking and gets a clean upload

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Summary by CodeRabbit

• Chores
  • Updated configuration files to exclude temporary files and build artifacts from version control and deployment processes, optimizing repository cleanliness and deployment efficiency.

[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: 955c8310-d3f8-48d3-a2c0-fb4726f336b6

📥 Commits

Reviewing files that changed from the base of the PR and between 267ac0a and 40676be.

📒 Files selected for processing (3)

• .gitignore
• .vercelignore
• website/.gitignore

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📝 Walkthrough

Walkthrough

The changes add Vercel-related configuration to ignore files across the project, preventing version control and deployment build artifacts from being tracked. A new .vercelignore file specifies which files and directories Vercel should exclude during builds, while .vercel is added to both root and website .gitignore files.

Changes

Cohort / File(s)	Summary
Vercel Artifacts .gitignore, website/.gitignore	Added .vercel ignore rule to prevent local Vercel-generated files from being tracked by Git.
Vercel Build Configuration .vercelignore	New configuration file that specifies build artifacts, dependencies, test suites, scripts, app folders, and generated/log files that Vercel should exclude during deployment.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 Hop, skip, and .vercel away,
Build files hidden from Git's display,
Config so clean, deployment so bright,
Vercel ignores keep everything right! ✨

🚥 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 directly and accurately summarizes the main changes: adding .vercelignore configuration and ignoring .vercel directory. It is concise, specific, and clearly conveys the primary purpose of the PR.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/vercelignore

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.