Option values: keep the nested-bracket residue and a glued second metavar word

[sadigaxund]

Keeps the trailing half of a nested-bracket value spec and the second word of a glued multi-word metavar, and records the three option rows this round measured and declined. S-174 recovered only the outer bracket group, so rustc, cpio and lsusb each rendered a value that stopped partway through what the tool printed.

Sweep numbers, full PATH, 2324 tools, against cf5912f:

• 4 tools changed, every change a value name growing to what the raw row says. Zero flag losses, zero flag gains, zero subcommand movement, zero positional movement. All nine control tools byte-identical on their #fp2 records: git, gcc, aarch64-linux-gnu-g++-13, ar, pnpm, systemctl, tar, find, docker.
• cpio -I and -O: [[USER@]HOST:] to [[USER@]HOST:]FILE-NAME. lsusb -s: [[bus]:] to [[bus]:][devnum]. rustc -l: [<KIND>[:<MODIFIERS>]=] to [<KIND>[:<MODIFIERS>]=]<NAME>[:<RENAME>]. pkcheck -d, --details: KEY to KEY VALUE.
• The residue rule rides S-174, which cleared the five-tool bar in round 11. pkcheck's own shape reads 1 tool and ships as a gated exception.

Three items were measured and not fixed, each with its number. pod2text's third alias reads 1 tool, and S-172's independent-evidence route does not reach it because pod2text's own usage line spells -w rather than -width. Xvfb's -cc int reads 1 tool and is recorded as S-178: the value is taken by the repeated-character repair, because Xvfb separately documents a real bare -c, and loosening a 132-tool family for one tool was declined. Xvfb's -deferglyphs [none|all|16] needed no fix at all, having already been recovered by S-145's own widening, confirmed against the running binary.

icupkg gets one atlas line recording that the maintainer accepted the -t, --type rendering. Refs #142, which is left open: that issue's own subject is -c or --copyright (S-134), and a screen of the current build still shows a bare -c row with no description and no --copyright in the tree, so the defect it names is live and its fixture stays [xfail].