The pm-era installer printed "[hermes]" lines between raw git, uv and pm
output. Restore the pre-pm installer's look (→ ✓ ⚠ ✗, banner on the full
ladder) and route every child command through run_logged: on a terminal it
shows one status line rewritten with the command's newest output line
(git clone phases via --progress), appends everything to
$HERMES_HOME/logs/install.log, and on failure prints the last 20 lines plus
the log path. CI, --verbose, HERMES_INSTALL_VERBOSE and a non-terminal
stdout (the Hermes-Setup --json driver, E2E transcripts) keep the full
stream, so their parsers see what they saw before. Errors stay on stderr.
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