I'll chance being blunt, this is a quite steep-angled race bike from the Thevenet era of Peugeot "out Italianing" the quickest-steering bikes of the time, so this bike seems an odd choice of commuting/errand-runner.
On the other hand, "low trail" is the operating word for this bike AND for the use of a front-mounted rack, so a minimalist/sporting front rack that supports a modest-sized handlebar bag (vs. a "rack trunk") could be an effective higher-performing errand-runner.
Fully embrace the performance aspect of this exceptional bike or sell it to someone who will(!).
Great bike imo, ...the long stem should help keep it under control, just don't leave it sitting outside to get ripped off.
This bike's performance, especially under out-of-saddle efforts (hills, sprints, bring 'em on) is something that I hope you will enjoy. There are quite few bikes as agile and responsive as this one (post-1972 so not your grandma's PX10).