Add St. Louis Board of Aldermen scraper

[ThatXliner]

Summary

• add a deterministic scraper for the St. Louis Board of Aldermen’s active-session agendas, meetings, legislation, sponsors, and documents
• combine official City HTML with the keyless CivicClerk public API while preserving stable source identifiers and document revisions
• register the scraper’s configuration and environment limit, extend shared local-government schema/API fields, and document the source contract

Why

This adds official St. Louis aldermanic data to the shared local-government ingestion path without AI, OCR, browser automation, or credentials. The scraper deliberately follows the session selected by the City rather than crawling archival sessions.

Impact

Consumers of the existing cached localGovernment API can receive St. Louis meetings, agenda items, legislative metadata, sponsors, and versioned documents. The default run limit is 100 meetings and can be overridden with ST_LOUIS_ALDERMEN_MAX_ITEMS.

Validation

• focused St. Louis parser tests: 5 passed
• @acme/scraper, @acme/api, and @acme/db typechecks passed
• API and database lint checks passed
• formatting checks passed

Dependency

Stacked on #181 (codex/nc-tx-scrapers-consolidated) so this PR shows only the St. Louis-specific changes.

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Project	Deployment	Actions	Updated (UTC)
billion-nextjs	Ready	Preview, Comment	Jul 26, 2026 5:10am