Ukiyo-e Hamster Summer Postcard

Prompt

Create a nostalgic Japanese summer greeting-card illustration in traditional ukiyo-e / shin-hanga watercolor style, featuring a cute plump {argument name="animal" default="hamster"} as the central subject. The animal sits on a shaded wooden seaside veranda, smiling with tiny paws wrapped around a chilled blue glass ramune soda bottle labeled in Japanese, wearing a broad straw hat tied with a dark blue ribbon. Behind it is a bright summer beach scene with turquoise ocean, foamy shore, a small sailboat, distant green hills, and a quaint coastal village under a pale blue sky with large fluffy clouds. Frame the scene like aged washi paper with rounded corners, sepia stains, rough inked borders, and visible paper grain. Add bamboo blinds hanging from the top corners, a glass wind chime with exactly two orange goldfish painted inside it, and a dangling paper strip reading 「涼風至」 on the left. Include exactly six major decorative summer elements: 1) the goldfish wind chime at upper left, 2) the ramune bottle in the hamster’s paws, 3) a folded paper fan with morning glory flowers at lower right, 4) purple and blue morning glory vines at lower left, 5) a wooden beach sign at mid-right reading 「名勝 海水浴場」, and 6) a small vertical placard at bottom left reading 「日本の夏」. Add vertical Japanese calligraphy at upper right reading 「暑中お見舞い 申し上げます」, a small red smiling sun doodle nearby, and a red seal stamp reading 「大正十五年 夏」. Use warm muted pigments, delicate ink outlines, soft watercolor washes, hand-printed texture, slight fading, and an old postcard composition. No photorealism, no modern objects except the traditional ramune bottle, no extra characters, no clean digital vector look.