LONDON—European shares rebounded on Friday, playing catch-up with a modest bounce the previous day on Wall Street, and the dollar index hit 100 for the first time in nearly two years as U.S. bond yields hovered near multi-year highs. World stocks edged higher but were still on track for their first weekly loss in four as the prospect of aggressive global rate hikes and geopolitical uncertainty kept investors wary. Risk appetite declined during the week as minutes from the Federal Reserve and European Central Bank showed policymakers are set to ramp up efforts to rein in inflation. At 1023 GMT, the MSCI world equity index, which tracks shares in 50 countries, was up 0.1 percent on the day but for the week was down 1.3 percent. The pan-European STOXX 600 was 0.9 percent higher. Futures for the S&P 500, Dow Jones Industrial Average, and Nasdaq 100 were all up around …