Switch to Python/FastAPI server (RandyGPT pattern)

Rewrite Space for pure-Julia MicroGPT (no Flux)

Fix inference: top-k sampling, repetition penalty, prompt encoding, vocab fixes

Fix space: add README, fix Dockerfile, add SSE streaming support

Replace MicroJulia v1 with JuliaGPTDistill Flux model

Fix package loading: use shared Julia depot and single project path

Fix JSON3 install: use Pkg.add instead of Pkg.instantiate

Add MicroGPT Julia inference server