PlumeLens (鉴翎) is a local bird photo analysis and culling workstation for bird photographers. It uses on-device ML models—YOLOv26l for detection, a custom 11-keypoint pose estimator, CLIPIQA+/HyperIQA for quality assessment, and DINOv3 with LoRA adapters for species classification—to process photos without any cloud upload. The system scans user photo directories (read-only), performs detection, pose estimation, quality scoring, and species identification, then presents a grading interface (reject/record/usable/select) with manual review and species override capabilities. Export supports JPG/RAW with XMP sidecars, and a geographic archive module visualizes species sightings on an interactive map with conservation status. The architecture is a desktop application split into an Electron+React frontend and a Python FastAPI backend. The backend runs as a subprocess managed by Electron, communicating via REST APIs and Server-Sent Events for progress. The ML pipeline is orchestrated in `engine/pipeline/manager.py` with ONNX Runtime and PyTorch inferences. The frontend uses React 19, TanStack Query, Zustand, and a virtualized grid for handling large photo sets. The application is packaged for macOS (arm64) via electron-builder and PyInstaller. While the primary delivery is a desktop application, the repository also contains extensive model training scripts, evaluation frameworks (`evals/`), and dataset preparation utilities, making it a hybrid project with significant research and data engineering components. Model integrity is enforced via SHA-256 manifest verification at startup, and all inference is deterministic with versioned pipeline hashes to invalidate caches on updates.