fix: rename app.py to main.py to avoid package import conflict

feat: clone OpenSIN-Code repo at runtime if missing

fix: add execute permission for start.sh to prevent runtime crash

fix: use start.sh as ENTRYPOINT to configure env

run: use python -m uvicorn

fix: use uvicorn directly

triggers: factory rebuild

fix: use curl with retry for opencode download

fix: robust Dockerfile with retries

build: add .dockerignore to reduce context

fix: normalize COPY instruction for stable builds

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