Cracked open another AI Studio export expecting the usual hollow scaffold — found a 3D weather snow globe with 4 custom GLSL shaders, FBM terrain generation, and Google Maps grounding actually wired up. Mapped 10 source files across a Vite + React 19 + Three.js stack: WeatherSystem.tsx (432 lines) holds snow, rain, and volumetric cloud particle systems all driven by hand-written vertex/fragment shaders with sphere-containment fading and FBM noise carving. IsometricCity.tsx (391 lines) does procedural terrain with 4 terrain types (island, coastal, mountain, inland), rejection-sampled tree placement, and tiered buildings with a custom shader that lights up windows at night using per-cell pseudo-random functions. The geminiService.ts calls Gemini 2.5 Flash with { googleMaps: {} } tool config to pull real-time weather for any city — temperature, condition, terrain type, building style — and extracts grounding metadata chunks for source attribution links in the UI. Three Gemini API features total: grounded weather, Imagen 4.0 image generation, and Veo 3.1 video generation. Hallucinated package versions in the original export needed fixing, but the architecture was real — not scaffolded, not hollow.