Remove legacy 'haikulab' references from codebase

[hk-jwingfield]

Summary

Review the codebase for any remaining references to "haikulab" (a legacy project name) and safely remove them.

Background

The project was previously named or associated with "haikulab". This legacy name may still appear in:

• Configuration files
• Environment variables
• Comments or documentation
• Package names or identifiers
• URLs or endpoints
• Database schemas or migrations

Tasks

• Search codebase for all occurrences of "haikulab" (case-insensitive)
• Document where each reference is found
• Assess impact of removal for each occurrence
• Create migration plan if any references are in persistent storage (DB, S3, etc.)
• Remove/update references that are safe to change
• Test that removal doesn't break any functionality
• Update any external documentation if needed

Acceptance Criteria

• No references to "haikulab" remain in the codebase (except historical git commits)
• All tests pass after removal
• No breaking changes to existing deployments

Notes

Use grep -ri haikulab to find all occurrences.