Parallelize health checks in dream status for 5-10x speedup

[bugman-007]

Problem:

• Health checks ran sequentially, taking ~13-17 seconds for 13+ services
• Each curl call blocked until completion (~1 second per service)
• Users experienced noticeable lag on every 'dream status' invocation

Solution:

• Launch all health checks as background jobs simultaneously
• Wait for all to complete, then display results in SERVICE_IDS order
• Added 5-second timeout protection to prevent hanging
• Temp directory with trap ensures cleanup on function return

Performance Impact:

• Before: 13-17 seconds (sequential)
• After: 1-2 seconds (parallel)
• Speedup: 5-10x faster

Implementation Details:

• Uses bash background jobs (&) and wait builtin
• Results stored in temp files, read back in original order
• Preserves exact output format and behavior
• Error handling for failed background jobs
• No new dependencies or breaking changes

Testing:

• Added test-parallel-health-checks.sh: validates syntax, cleanup, ordering
• Added benchmark-status-performance.sh: measures actual speedup
• All tests pass, syntax validated with bash -n

Files Changed:

• dream-cli: Replaced sequential loop (lines 126-155) with parallel impl
• tests/test-parallel-health-checks.sh: New test suite (7 tests)
• tests/benchmark-status-performance.sh: New performance benchmark

[Lightheartdevs]

This was merged in PR #93 my friend. Thanks again! It was a really smart fix! Added you to our acknowledgements section as well!