California’s Bay Area lost jobs during September, while the state’s employment gains slowed to a crawl, a report released on Friday showed, an ominous yellow flag for the once-booming economies in the region and statewide. The unsettling employment report suggests that the job markets in the Bay Area and California have begun to wobble in the face of soaring interest rates that federal officials have imposed in a quest to cool off skyrocketing consumer prices — and the economy. The Bay Area lost 700 jobs in September, according to the government labor report, with nearly every metro center in …