perf(booth): optimize assets and result flow

WebP reduces UI payload; JPEG keeps portrait saves compatible.\nFinish ends the visit without prompting another portrait.

config/styles.json

@@ -9,8 +9,8 @@
       "en": "Extrapolates your posture into an airborne crane stance or soaring crescent kick with a flowing crimson cape.",
       "zh": "将你的姿态外推升华为兼具美感与爆发力的仙鹤独立型或腾空飞踢，天鹅绒斗篷随风狂舞，夜眺黄浦江画舫。"
     },
-    "thumbnail": "/assets/styles/bund_vampire_master.jpg",
-    "sampleResult": "/assets/styles/bund_vampire_master.jpg",
+    "thumbnail": "/assets/styles/bund_vampire_master.webp",
+    "sampleResult": "/assets/styles/bund_vampire_master.webp",
     "prompt": "CRITICAL STRICT IDENTITY & DYNAMIC POSE EXTRAPOLATION (ABSOLUTE HIGHEST PRIORITY): 1. DYNAMIC KARATE EXTRAPOLATION (AVOID STATIC / IDENTICAL POSES): Deeply analyze the person's posture, weight distribution, arm reach, and inclination in the photo, then BOLDLY EXTRAPOLATE and exaggerate it into an athletic, cinematographic, highly dynamic karate action move matching this style's soaring aerial theme: - If an arm or leg is lifted/stepping -> extrapolate into a soaring aerial karate crane stance (Tsuruashi-dachi) or high flying crescent kick (Mikazuki-geri), one foot perched lightly with martial elegance. - If reaching forward or punching -> extrapolate into a deeply lunged forward strike with their crimson vampire cape billowing dramatically in the river wind. - If arms are bent or neutral -> extrapolate into an intense, crouching cat stance (Nekoashi-dachi) with open knife-hands (Shuto) held in razor-sharp vampire guard. Make the pose feel ALIVE, athletic, and full of cinematic kinetic momentum—NEVER stiff or repetitive. 2. FACIAL IDENTITY: Strictly preserve their exact recognizable facial features, eye shape, smile, nose, chin, and hair. Friends and parents MUST instantly recognize this exact person. STYLING: Translate them into a high-end 3D animated feature film character (Pixar/Hotel Transylvania/DreamWorks). COSTUME: Preserve their costume or gi, adding an elegant flowing crimson velvet vampire cape over their shoulders and an Obi belt around the waist. Genuine friendly smile with cute mini-fangs. Background: Moonlit wooden rooftop dojo overlooking the misty Huangpu River with traditional lantern-lit vintage Shanghai boats beneath an enormous golden full moon and cute cartoon bats fluttering overhead. Warm whimsical cartoon lighting, zero weapons, zero headbands, zero flags, family-friendly.",
     "negativePrompt": "boring static standing, flat stiff posture, repetitive generic pose, awkward stiffness, unrecognizable person, different face, altered facial features, generic cartoon face, changed eye shape, changed skin tone, changed nose, bad likeness, photorealistic flesh, creepy horror, scary, bloody, blood, gore, violent, deformed, extra fingers, weapons, swords, katana, japanese flag, headband, text watermark"
   },
@@ -24,8 +24,8 @@
       "en": "Extrapolates your posture into a thunderous forward punch or horse stance radiating swirling pumpkin flame orbs.",
       "zh": "将你的姿态推演为极具爆发力的骑马步轰拳或旋风格挡，双拳汇聚万圣流火气合波，背景为圆月东方明珠。"
     },
-    "thumbnail": "/assets/styles/jack_o_lantern_sensei.jpg",
-    "sampleResult": "/assets/styles/jack_o_lantern_sensei.jpg",
+    "thumbnail": "/assets/styles/jack_o_lantern_sensei.webp",
+    "sampleResult": "/assets/styles/jack_o_lantern_sensei.webp",
     "prompt": "CRITICAL STRICT IDENTITY & DYNAMIC POSE EXTRAPOLATION (ABSOLUTE HIGHEST PRIORITY): 1. DYNAMIC KARATE EXTRAPOLATION (AVOID STATIC / IDENTICAL POSES): Extrapolate the user's posture into an explosive, powerful, deeply-grounded karate technique: - If any forward lean or arm push -> extrapolate into an explosive lunging front-punch (Oi-tsuki) with low front stance (Zenkutsu-dachi), driving forward with earth-shattering force. - If hands near waist or body -> extrapolate into a wide, powerful Horse Stance (Kiba-dachi) with dual chambered fists firing outward. - If standing casually or neutral -> extrapolate into an energetic diagonal guard with shoulders turned, knees bent in athletic anticipation, ready to unleash a flame blast. Bursting from their hands are dynamic swirling ribbons of glowing pumpkin embers and magical flame ki shields. The pose must have intense kinetic energy, sharp angles, and dramatic martial action lines. 2. FACIAL IDENTITY: Strictly preserve their exact recognizable face, eye shape, eyelid fold, iris color, nose, smile, hair texture, and glasses. STYLING: High-end 3D animated character (Pixar/DreamWorks aesthetic). COSTUME: Preserve outfit, adding a crisp karate martial belt (Obi). Beside them is a cute animated smiling jack-o'-lantern mimicking their powerful stance. Background: Authentic wooden courtyard dojo with warm lanterns overlooking the glowing Oriental Pearl Tower in Shanghai under a purple twilight harvest moon. Family-friendly, zero weapons, zero headbands.",
     "negativePrompt": "boring static standing, stiff arms, identical repetitive pose, frozen mannequin, unrecognizable person, different face, altered facial features, generic cartoon face, changed eye shape, changed skin tone, changed nose, bad likeness, photorealistic composite, flat image, distorted face, monster, scary, blood, gore, weapons, sword, katana, imperial flag, headband, text watermark"
   },
@@ -39,8 +39,8 @@
       "en": "Extrapolates your posture into a high-speed reverse punch or sweeping kick trailed by neon-cyan & purple calligraphic ink.",
       "zh": "将你的身形化作极速反弹冲拳或旋风扫腿，青紫电光气合波与水墨书法笔锋撕裂夜空，外滩夜色璀璨。"
     },
-    "thumbnail": "/assets/styles/ink_wash_cyber_shinobi.jpg",
-    "sampleResult": "/assets/styles/ink_wash_cyber_shinobi.jpg",
+    "thumbnail": "/assets/styles/ink_wash_cyber_shinobi.webp",
+    "sampleResult": "/assets/styles/ink_wash_cyber_shinobi.webp",
     "prompt": "CRITICAL STRICT IDENTITY & DYNAMIC POSE EXTRAPOLATION (ABSOLUTE HIGHEST PRIORITY): 1. DYNAMIC KARATE EXTRAPOLATION (AVOID STATIC / IDENTICAL POSES): Extrapolate the user's body position into a high-velocity, cinematic anime/comic action shot with exaggerated perspective (Spider-Verse kinetic camera angle): - If arms or torso show any lateral movement -> extrapolate into a devastating reverse-punch (Gyaku-tsuki) or back-fist strike (Uraken) with dynamic foreshortening where the front fist appears large and impactful. - If any leg or foot movement -> extrapolate into a mid-air sweeping roundhouse kick (Mawashi-geri) or side kick (Yoko-geri). - If casual standing -> extrapolate into a tense, coiled ready-to-strike crouching guard (Kumite Dachi) with hair and belt fluttering in the shockwave. Dynamic swirling calligraphy ink splashes and electric cyan/purple neon chi lines slice through the air along their movement path. 2. FACIAL IDENTITY: Faithfully reproduce their recognizable face, eyes, smile, and hairstyle. STYLING: High-end 3D animated feature film character in dynamic Spider-Verse meets Pixar style. COSTUME: Maintain their clothing/costume, adding a sleek black karate martial belt (Obi) at the waist. Background: The historic illuminated architecture of the Shanghai Bund along the misty Huangpu River under a dramatic moonlit Halloween sky with playful origami paper bats. High energy, heroic, zero weapons, zero headbands.",
     "negativePrompt": "boring static standing, flat stiffness, identical repetitive pose, wooden dummy, unrecognizable person, different face, altered facial features, generic cartoon face, changed eye shape, changed skin tone, changed nose, bad likeness, distorted face, dull colors, weapons, katana, swords, japanese imperial flag, rising sun, headband, hachimaki, scary, bloody, ugly, deformed limbs, watermark"
   },
@@ -54,8 +54,8 @@
       "en": "Extrapolates your posture into an expressive, joyful Kata form with chubby mini ghosts comically exaggerating your move.",
       "zh": "将你的动作生动外推为欢快神气的经典型演武，胖嘟嘟的小幽灵们夸张地模仿你的招式在榻榻米上翻滚喝彩。"
     },
-    "thumbnail": "/assets/styles/ghostly_kiai_dojo.jpg",
-    "sampleResult": "/assets/styles/ghostly_kiai_dojo.jpg",
+    "thumbnail": "/assets/styles/ghostly_kiai_dojo.webp",
+    "sampleResult": "/assets/styles/ghostly_kiai_dojo.webp",
     "prompt": "CRITICAL STRICT IDENTITY & DYNAMIC POSE EXTRAPOLATION (ABSOLUTE HIGHEST PRIORITY): 1. DYNAMIC KARATE EXTRAPOLATION (AVOID STATIC / IDENTICAL POSES): Extrapolate the person's pose into an expressive, theatrical, and joyful karate Kata demonstration: - If hands are up or cheering -> extrapolate into a victorious dual-fist skyward Kiai finish with high chin and proud champion posture. - If hands are forward or pointing -> extrapolate into a theatrical knife-hand strike (Shuto-uchi) or double palm thrust (Morote-teisho). - If casual standing -> extrapolate into an exaggerated, theatrical Kata opening salute (Rei / chambered fists) with feet planted wide and a spirited martial expression. GHOST BUDDIES: 3 to 4 chubby cartoon baby ghosts enthusiastically mimic this exaggerated move, with one ghost comically tumbling over trying to copy the stance. Floating candies and glowing jack-o'-lanterns drift in mid-air. 2. FACIAL IDENTITY: Strictly preserve their exact recognizable face, eye shape, smile, teeth, and hair. STYLING: Warm, lovable 3D animated character (Pixar/Hotel Transylvania aesthetic). COSTUME: Tie a martial arts karate belt over their outfit. Background: Inside a cozy traditional wooden Shanghai dojo with glowing carved pumpkin lanterns, paper screens, and a night window showing the Shanghai skyline. Heartwarming, funny, high quality 3D cartoon render, zero weapons, zero flags.",
     "negativePrompt": "boring static standing, dull stiffness, identical repetitive pose, frozen expression, unrecognizable person, different face, altered facial features, generic cartoon face, changed eye shape, changed skin tone, changed nose, bad likeness, terrifying, scary ghost, evil demon, blood, gore, horror, distorted face, changed identity, weapons, swords, katana, rising sun, headband, blurry, deformed limbs, watermark"
   }