v0.5.0

CPU time profiling, instrument-everything default, panic-safe data capture, and project-local storage.

Added

• CPU time profiling via --cpu-time flag (Linux + macOS, 64-bit)
• Instrument all functions by default when no --fn/--file/--mod specified
• Project-local run data: output written to target/piano/runs/ instead of global ~/.piano/runs/
• Panic-safe data capture: profiling data is collected even when the instrumented program panics
• Hidden-function footer in summary and frames reports

Fixed

• Unparseable source files are skipped with a warning instead of aborting
• Async functions skipped with a warning instead of silently producing wrong data
• Cross-thread functions correctly merged into NDJSON report
• Symlinks followed when staging project files for instrumentation
• Bare stdout path suppressed in interactive terminals
• --fn help text clarified with substring matching example including qualified names
• Actionable error messages when project directory or src/ is missing

Changed

• Default behavior: piano build instruments all functions when no targeting flags are given
• Run data location: project-local target/piano/runs/