pre-commit was noisy: every sub-target dumped full stdout/stderr to the
terminal, burying failures in pages of compiler output and lint details.
Teach timed-shell.sh a quiet mode via MAKE_LOGDIR: when set, recipe
output is redirected to per-target log files and a one-line status is
printed instead. When unset, behavior is unchanged (with a refreshed
output format).
Makefile changes:
- pre-commit creates a tmpdir, passes MAKE_LOGDIR to sub-makes
- Drop --output-sync=target (log files eliminate interleaving)
- Add --no-print-directory to suppress Entering/Leaving noise
- Split check-unstaged and check-untracked into separate defines
- Restyle both with colored indicators and clearer instructions
- Clean up tmpdir on success, preserve on failure for debugging
pre-commit and pre-push only reported total elapsed time at the end,
making it hard to identify which jobs are slow.
Add a `MAKE_TIMED=1` mode that replaces `SHELL` with a wrapper
(`scripts/lib/timed-shell.sh`) to print wall-clock time for each
recipe. pre-commit and pre-push enable this on their sub-makes.
Ad-hoc use: `make MAKE_TIMED=1 test`
Mathias Fredriksson