A 28-year-old woman from Mumbai is evaluated for abnormal liver function tests found on routine screening. She is asymptomatic and denies jaundice, dark urine, or abdominal pain. Her liver enzymes are mildly elevated (ALT 120 IU/L, AST 95 IU/L). Serological testing reveals: HBsAg positive, anti-HBc IgM negative, anti-HBc IgG positive, HBeAg negative, anti-HBe positive, anti-HBs negative. HBV DNA is detectable at 2 × 10^4 copies/mL. What is the most likely diagnosis?