WSB-Backend, component by component

Nineteen lessons, about 15 minutes each. Do them in order the first time; revisit any one when a ticket touches it.

Foundations

#	Lesson	Covers
1	Life of a request	Kong, Deno.serve, CORS gates, router, handler, anon client, RLS
2	Cron, Vault and pg_net	Scheduled jobs, post_to_edge_function, inspecting failures
3	Auth tiers	anon vs user JWT vs service_role, verify_jwt, config.toml auth
4	Migrations and pgTAP	How schema changes travel to prod and how tests guard them
5	The _shared module	Every helper every function leans on

Stocks

#	Lesson	Covers
6	Stocks public API	details, leaderboard, watchlist, price-history, logos, news, benchmark
7	Stocks ingestion	Massive polling, refresh jobs, backfills, hydrate/prune/retry
8	Price history storage	Partitions, retention tiers, rollups, midnight-ET bars
9	SEC filings and financials	EDGAR polling, CIK map, insider transactions, income statements

Product surfaces

#	Lesson	Covers
10	Earnings	earnings, earnings-cache, Quartr webhook and HMAC
11	Brokerage and SnapTrade	Connections, balances, positions, holdings, winrate
12	Profiles and users	Signup trigger, avatars, moderation, search, watchlists, missions, deletion
13	Feed	Feed items and frontend integration
14	News CMS	admin, api, public surfaces, featured images
15	Email	Auth hook, Resend, React Email, waitlist welcome
16	Internal utilities	notify-slack, fx, proxy, clickup-sprint-guard, submit-feedback

Engineering system

#	Lesson	Covers
17	Testing	pgTAP, Deno tests, CI filter, legacy suite
18	Local dev and deploy	config.toml, start/serve/reset, scripts, deployment
19	Deno fundamentals	deno.json, lockfile, specifiers, permissions, Node differences

Ask the teacher in the terminal at any point. After each lesson, report your quiz score and your predictions from "Do this in the repo" so a learning record can be written.