Unified SDK + CLI + Asset Manager + Smoke Tests

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Summary

Refactor the repo into a small, installable SDK with a single CLI, an asset manager for model files, and a smoke-test suite. Keep all current scripts working, but route them through the new common APIs to reduce duplication and make onboarding dead simple.

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Why

• Every classifier has its own entrypoint/IO. A common interface makes demos, docs, and CI far easier.
• Model weights are scattered (LFS/Drive/manual). A manifest + downloader prevents broken setups.
• Quick smoke tests in CI catch regressions (OpenCV/TF updates, path issues, missing assets).

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Deliverables

1. SDK layer (installable)

   • New package: ai_ml_classifiers/

   • Base protocol:

     class Classifier(Protocol):
         name: str
         tasks: tuple[str, ...]  # e.g. ("vehicle",)
         def load(self, device: str = "cpu") -> None: ...
         def predict(self, source: str|Path|int, **kwargs) -> "Prediction": ...

   • Registry: from ai_ml_classifiers import get, list_tasks

   • Uniform Prediction dataclass: boxes/labels/scores or text for OCR/ASR, with timestamps for video.

2. CLI (aimc)

   • aimc run <task> --source webcam|image|video --device cpu|cuda --top-k 5
   • aimc assets sync (download all needed weights)
     aimc assets doctor (checksums, paths)
   • aimc list (available tasks)

3. Asset Manager

   • assets/manifest.yaml for every weight/file: {id, task, filename, bytes, sha256, urls:[lfs,hf,gdrive]}
   • Downloader with progress + checksum + cache (~/.aimc/assets)
   • Graceful fallbacks (try next URL if one fails)

4. Smoke tests (pytest)

   • Tiny inputs per task in assets/samples/
   • pytest -m smoke runs one frame/sample per classifier (skip if asset missing)
   • CI: Ubuntu job runs assets sync, then pytest -m smoke -q

5. Docs

   • Top-level README: “Quickstart (CLI)”, “SDK usage”, “Assets”
   • Per-task mini READMEs become short pages under docs/ or sections in main README
   • Table mapping old scripts → new commands

6. Back-compat

   • Keep legacy scripts (vehicle_detection.py, etc.) but refactor internals to call the SDK
   • Flask app imports SDK instead of duplicating logic

7. Nice-to-have (optional if time)

   • --onnx path for 1–2 models to speed up CPU demos
   • --half (FP16) when CUDA is detected
   • Simple benchmark: aimc bench <task> --source image --repeat 50

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Suggested file layout

ai-ml-classifiers/
  ai_ml_classifiers/
    __init__.py
    api.py               # registry, base types, Prediction
    assets.py            # downloader, checksums, cache
    utils/io.py          # image/video/webcam loaders
    tasks/
      vehicles.py
      faces.py
      mood.py
      flowers.py
      objects.py
      ocr.py
      animals.py
      speech.py
      sentiment.py
  cli/aimc.py            # click/typer CLI entrypoint
  assets/manifest.yaml
  tests/smoke/
    test_vehicles.py
    ...
  pyproject.toml         # package + console_scripts = ["aimc=cli.aimc:main"]

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Acceptance criteria

• pip install -e . exposes aimc in PATH.
• aimc list shows at least the 9 current tasks.
• aimc assets sync downloads required weights; doctor reports OK with checksums.
• aimc run vehicle --source assets/samples/traffic.mp4 produces labeled frames.
• pytest -m smoke passes locally and in GitHub Actions.
• Legacy scripts continue to work (but now import from the SDK).

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Task checklist

• Create ai_ml_classifiers package, base Classifier + Prediction
• Implement registry + per-task adapters (wrap existing code)
• Implement assets/manifest.yaml + downloader with checksum verification
• Add CLI (typer or click) with run/list/assets
• Add sample inputs and tiny gold outputs for smoke tests
• Wire GitHub Actions: setup-python, pip install -e ., aimc assets sync, pytest -m smoke
• Update README (Quickstart, SDK, Assets, CI)
• Refactor Flask app to call SDK (keep routes/UX unchanged)
• Mark legacy scripts as “thin wrappers” (one-line import + call)

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Notes / risks

• Large weights: keep LFS references, but manifest should include multiple mirrors.
• Platform deps: gate PyAudio/Tesseract tests with markers & skips; document install hints per OS.
• CUDA optional: auto-detect, but default to CPU; no hard runtime dependency on CUDA.

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Fixes #20.

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