feat(platform): harden telemetry pipeline and unify Semi UI workspaces

deploy/feichi-ocr/Dockerfile

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+FROM python:3.11-slim
+
+RUN pip install --no-cache-dir \
+    --index-url https://mirrors.aliyun.com/pypi/simple \
+    ddddocr==1.6.1
+
+WORKDIR /app
+COPY ocr.py /app/ocr.py
+USER nobody
+ENTRYPOINT ["python", "/app/ocr.py"]

deploy/feichi-ocr/ocr.py

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+import re
+import sys
+
+import ddddocr
+
+
+def main() -> int:
+    image = sys.stdin.buffer.read()
+    if not image:
+        print("captcha image is empty", file=sys.stderr)
+        return 2
+    result = ddddocr.DdddOcr(show_ad=False).classification(image)
+    code = re.sub(r"[^0-9A-Za-z]", "", result).upper()
+    if not re.fullmatch(r"[0-9A-Z]{4}", code):
+        print(f"invalid OCR result: {code!r}", file=sys.stderr)
+        return 3
+    print(code)
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())