v5.163.3

What's Changed

• fix(subagent): sanitize id_prefix to prevent assertSafeJobId rejection (#1319) by @griffinwork40 in #1350
• fix(subagent-log): document one-line overshoot contract and tighten cap test (#1316) by @griffinwork40 in #1351
• fix(render): harden drawBox width coupling and fragile newline assertion (#1345) by @griffinwork40 in #1355
• refactor(render): separate stack traces from recovery hints in errorCard (#1327) by @griffinwork40 in #1356
• perf(subagent-log): memoize mkdirSync per sessionLabel to avoid redundant syscalls (#1320) by @griffinwork40 in #1353

Full Changelog: v5.163.2...v5.163.3