chore: remove AGENTS.md symlink to reduce duplicate context

[skwowet]

Summary

• Remove the root AGENTS.md symlink that pointed to CLAUDE.md
• Keep CLAUDE.md as the single source of truth for agent instructions in Cursor and Claude Code
• Avoids duplicating the same workspace rules in the context window

[github-actions]

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• feat: add user authentication (CM-123)
• feat: add user authentication (IN-123)

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• CM: Community Data Platform
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[Copilot]

Pull request overview

This PR removes the root AGENTS.md symlink that pointed to CLAUDE.md, leaving CLAUDE.md as the single source of truth for agent/workspace instructions used by Cursor and Claude Code. The goal is to avoid tools that read both files pulling the same workspace rules into the context window twice. The change is configuration/tooling-only and touches no application code.

I verified the removal is clean: a repository-wide search found no remaining references to AGENTS.md (including in .github workflows, .cursor/rules/, .claude/ hooks/agents/skills, .gitignore, and docs), so nothing is left dangling. CLAUDE.md remains referenced and protected by .claude/hooks/guard-protected-files.sh.

One non-blocking process note: the PR title chore: remove AGENTS.md symlink to reduce duplicate context does not include a JIRA key (e.g. (CM-XXXX)), which .claude/rules/commit-workflow.md expects; CI surfaces this as a neutral (non-failing) check.

Changes:

• Delete the root AGENTS.md symlink, keeping CLAUDE.md as the canonical agent-instruction file.

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