2026.07.21 — Sources explorer & related-source panels

The explorer caught up to the expanded corpus: a config-driven Sources browser plus in-context "related source" panels on docket and agency pages, all still zero-backend (DuckDB-WASM over R2). In parallel, a load-time pass and a shared async-data/error layer made the app faster and fail-loud instead of silent.

Added

• Sources explorer (/sources → /sources/[source]) — a config-driven browser over the 10 new external datasets, queried live in the browser with row counts and per-table freshness. #10
• Related external-source panels in context: "Planned rulemaking · Unified Agenda" on docket pages and recent APA litigation on agency pages. #11
• Shared useAsyncData hook with error boundaries and sqlStr hardening, replacing copy-pasted effects that silently swallowed query failures. #8
• In-app /changelog page plus CHANGELOG.md and a /two-week-changelog command. #13

Changed

• Cut load times: lazy DuckDB boot off the critical hydration path, preconnects, and cached hot scans (from a multi-agent, adversarially verified audit). #9
• Finished the external-source follow-ups: resolve Unified Agenda RINs from fr_docket_links (dropping a ~120 MB per-docket Federal Register scan), typed date/timestamp freshness tiles, icon-only nav below sm, and lint debt downgraded to warnings for a usable pass/fail signal. #12

Fixed

• Kept the DuckDB-WASM JSON-statistics workaround (filter on docket_id before projecting/unnesting RINs) to avoid the WASM-only TProtocolException. #12

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Full changelog: https://github.com/ekim1394/spicy-regs-ui/commits/2026.07.21