test: add comprehensive tests for scraper package

[mehallhm]

Summary

• Add 318 unit tests across 20 test files for the @sneu/scraper package (previously had zero tests)
• Tests cover all major modules: data transformation, HTML parsing, fetch infrastructure, schemas, scraping steps, and upload/update utilities
• Uses Node.js native test runner (node:test) with nock for HTTP mocking

Test breakdown by commit:

Commit	Module	Tests
events + config + endpoints	Core utilities	16
Banner schemas	API response validation	68
marshall	arrangeCourses, parseMeetingTimes	27
reqs	parsePrereqs, parseCoreqs, populatePostReqs	23
scraper schemas	Cache + static config schemas	87
sections + terms + campuses	Scraping steps (direct fetch)	11
prereqs + coreqs steps	Scraping steps (FetchEngine)	9
fetch infrastructure	$fetch retry + FetchEngine class	25
upload/update utilities	chunk, filterScrapeByPartOfTerm, sendNotifications	20
faculty + names + descriptions	Scraping steps (FetchEngine)	24

Not tested (intentionally skipped):

• generate/main.ts — orchestrator requiring full pipeline mock
• upload/steps/*.ts — tightly coupled to drizzle DB transactions
• update/main.ts — coupled to both scraper and DB queries
• Trivial z.string() schemas (sectionCatalogDetails, sectionCoreqs, etc.)

Test plan

• All 318 tests pass with node --test --import tsx

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated (UTC)
searchneu	Canceled		Mar 26, 2026 11:52pm

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
searchneu-docs	Skipped		Mar 26, 2026 11:52pm