掌心星球纪念品：非洲城市化身球形遗物

2x2网格，16:9，对非洲4个著名城市执行此操作：-- input: $ subject create temp view subject_analysis as select infer_core_identity(:subject) as identity, infer_central_landmark(:subject) as nucleus, infer_districts_or_components(:subject) as zones, infer_connection_paths(:subject) as paths, infer_symbolic_details(:subject) as symbols, infer_scale_references(:subject) as scale_clues; create temp view planet_base as select build_handheld_sphere( scale = 'fits in one or two human hands', surface = 'curved miniature terrain', material = 'matte resin, painted architectural model, tiny stone, tiny greenery', underside = 'subtle model-object thickness' ) as sphere from subject_analysis; create temp view world_layer as select place_nucleus( nucleus, position = 'top focal point', style = 'most recognizable miniature landmark or symbolic core' ) as central_anchor, wrap_zones_around_sphere( zones, layout = 'radial districts, layered neighborhoods, clustered object ecosystems', density = 'high near the nucleus, softer around edges' ) as world_zones, wrap_paths( paths, forms = array['roads','rails','bridges','orbit roads','ribbons','walkways','canals'], rule = 'paths curve naturally around the sphere' ) as circulation from subject_analysis; create temp view detail_layer as select add_tiny_scale_clues( scale_clues, items = array['cars','trees','figures','boats','signs','tiny props','micro shadows'] ) as scale, add_symbolic_markers( symbols, style = 'small badges, flags, plaques, icons, towers, plants, lights' ) as markers from subject_analysis; render planet_base.sphere, world_layer.central_anchor on_top, world_layer.world_zones around_sphere, world_layer.circulation wrapping_around, detail_layer.scale, detail_layer.markers with camera = 'macro close-up, held in human hands', lighting = 'warm natural daylight or soft studio glow', depth = 'shallow depth of field, blurred real-world background', mood = 'impossible souvenir, precious micro-world, collectible civic artifact'; -- output rules: -- 1. $ subject becomes a palm-sized spherical world relic. -- 2. preserve identity through the central landmark, surface zones, materials, and symbolic details. -- 3. roads, paths, or flow-lines should wrap around the sphere convincingly. -- 4. include visible hands for scale unless the subject calls for a display stand. -- 5. make it feel handcrafted, dense, and real enough to hold. -- 6. avoid flat posters, full-size landscapes, random city clutter, and toy-like oversimplification.