Fix local pipeline database registration and empty village-ID handling

[amit-spatial]

Summary

• Register locally generated Facilities, Antyodaya, and Livestock layers through the canonical save_layer_info_to_db and update_layer_sync_status functions after successful GeoServer publication.
• Use not applicable: local compute GeoServer layer for asset_id, which is stored in gee_asset_path.
• Pass only {"is_generated_locally": true} in misc.
• Remove the shared register_layer abstraction and its package export so these first three consumers exercise the production database functions directly.
• Report tehsils containing village geometries but no usable village IDs gracefully instead of raising a missing village_code KeyError.

Root cause

The shared wrapper introduced a second layer-registration implementation instead of using the established production functions directly.

Separately, an empty sidecar lookup returned a DataFrame without its configured key columns. For tehsils where every village ID was missing, downstream code then accessed a nonexistent village_code column.

Database behavior

Each successfully published layer now calls:

layer_id = save_layer_info_to_db(
    ...,
    asset_id="not applicable: local compute GeoServer layer",
    misc={"is_generated_locally": True},
)
update_layer_sync_status(layer_id=layer_id, sync_to_geoserver=True)

Registration and sync failures are raised explicitly rather than being silently reported as successful pipeline runs.

Validation

• Reran Facilities, Antyodaya, and Livestock for Bihar/Jamui/Jamui through Django with use_pregenerated=false and live GeoServer publication.
• Verified five database registrations through the canonical helpers: Facilities Proximity, two Facilities Points layers, Antyodaya 2020, and Livestock Census.
• Verified the explanatory gee_asset_path, is_public_gee_asset=false, is_sync_to_geoserver=true, and misc.is_generated_locally=true.
• Verified empty village-ID lookups preserve the configured village_code schema.
• Passed py_compile, focused Ruff fatal-error checks, and git diff --check.

Scope

This PR contains four commits and changes only:

• computing/misc/facilities/pipeline.py
• computing/misc/antyodaya/pipeline.py
• computing/misc/livestocks/pipeline.py
• utilities/pipelines/__init__.py
• utilities/pipelines/publish.py
• utilities/pipelines/tabular.py

No changes are made to computing/utils.py, authentication, API permissions, or migrations. The CS admin-standard resource work remains isolated in PR #1084.