Add tree canopy reprojection helper

[erin-glen]

Motivation

• Provide a small utility to reproject NLCD Tree Canopy Cover rasters to the NLCD reference grid for downstream processing.
• Discover unprojected canopy rasters placed in the primary and fallback input directories and produce consistent outputs next to them.
• Ensure outputs align to the NLCD reference raster grid and spatial reference to avoid misalignment with other NLCD products.

Description

• Add reproject_tree_canopy.py, which scans cfg.NLCD_TCC_INPUT_DIR and cfg.NLCD_TCC_INPUT_DIR_FALLBACK for *.tif files that do not end with _projected.tif.
• Set arcpy environment (snapRaster, cellSize, extent, outputCoordinateSystem) from the reference raster at cfg.NLCD_RASTER and use arcpy.management.ProjectRaster to reproject.
• Write outputs named by appending _projected before the .tif extension and skip files where the output already exists.
• Use NEAREST resampling and arcpy.env.overwriteOutput = True while checking out the Spatial extension.

Testing

• No automated tests were run for this change (script-only addition).

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Codex Task

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Pass numeric cell size to ProjectRaster

Here cell_size is fed from arcpy.env.cellSize, but _set_env assigns that environment value to the reference raster path string. ProjectRaster expects a numeric cell size, so when the env value is a path this call can fail with an “invalid cell size” error and stop all reprojections. Consider passing a numeric size (e.g., Describe(ref).meanCellWidth) or omitting cell_size and letting the environment setting take effect.

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