TASK-19: Add Chicago building permit Socrata adapter - #26
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- adapters/chicago.py: pulls ~5K records from Chicago Data Portal SODA API - Filters out electrical/plumbing/sign/fence permits - Maps 7 Chicago status values to unified schema - Infers project_type from work_type/description with keyword matching - Records include lat/lng natively (no geocoding needed) - Includes permit_value (estimated_cost) and square_feet (total_sq_ft) - Updates pipeline scripts (run_city.sh, run_all.sh) with chicago - Updates data/source_mappings.md with Chicago section and cross-city comparison
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Closes #17
What
Adds a Chicago building permit ETL adapter using the Socrata SODA API (same pattern as NYC).
Changes
adapters/chicago.pypipeline/run_city.shchicagoto valid citiespipeline/run_all.shchicagoto pipeline listdata/source_mappings.mdKey Design Decisions
work_type/descriptionwith keyword matching, falls back topermit_typemappingpermit_value(estimated_cost) andsquare_feet(total_sq_ft) — fields NYC and Seattle lack$offset/$limit)Verification
ruff check .— passes