The QA stack has been logging ERR_ERL_KEY_GEN_IPV6 at every boot, and express-rate-limit was right to complain.
keyByCallerAndEmail built its key from req.ip raw. For an IPv4 caller that is one address and the limiter worked as intended. For an IPv6 caller it is the full 128 bits — and a residential IPv6 customer is delegated an entire prefix and can source every request from a different address inside it at no cost. Keyed that way, each request counted as a new caller and the allowance of five per fifteen minutes never bound at all.
That matters more here than it would elsewhere, because of what this limiter is for. Its own comment says it: without one, anyone can make the server send unlimited mail to any address they choose. For IPv6 clients there effectively was no limiter, while the code read as though there were.
The caller half of the key now goes through express-rate-limit's ipKeyGenerator, which groups IPv6 by prefix and returns IPv4 unchanged. The helper's default is /56 rather than /64, and that default is kept deliberately: /56 covers a whole delegated site, so an attacker cannot escape their bucket by moving within their own allocation. It does mean several households behind one delegation share an allowance — acceptable only because the key also carries the email address, so they collide just when targeting the same account. The reasoning sits next to the code, because a future reader tightening it to /64 would silently reopen the hole.
keyByCallerAndEmail is now exported so it can be tested directly. The limiter's allowance is still not asserted anywhere, and should not be: its store is process-wide, so a test that exhausts it leaks into every later test from the same address and fails something unrelated later. The key function is pure, and it is where the bug was.
Verified by firing the guard rather than reasoning about it: building main and loading the module reproduces the ValidationError, and the same load with this change is silent. Seven new unit tests cover an IPv4 caller unchanged, two addresses in one delegation collapsing to a single key, separate delegations staying apart, an IPv4-mapped address keying the same as the plain IPv4 one, email normalisation, a non-string email, and a request with no address at all.
86 unit tests pass, 144 integration, lint 0 errors and 8 warnings — unchanged.
Closes#84
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Express 4 does not forward a rejected promise from an async handler, so an unwrapped async route never responds at all — the request hangs until the client gives up, nothing reaches the error middleware, and monitoring sees an open connection rather than a 500. That silence is the shape of the 2026-08-17 incident, where an unhandled rejection left every item query hanging and the storefront rendered it as an empty shop. `asyncRoute` was written in response, but it was only applied to some routes: 30 handlers added afterwards were still bare, including register, login, the whole cart, and PayPal checkout.
Wraps all 30, plus two the issue's inventory missed. `attachCustomer` is a bare async middleware mounted globally in app.ts, so a rejection in its session lookup would hang every request in the application — including the 25 handlers that were already wrapped correctly, which meant the guarantee did not actually hold anywhere. The PayPal webhook registers on a second router named `webhookRouter`, so an audit grepping for `router.` walked straight past it.
Adds a unit test that scans the route sources and fails on any registration whose handler is not wrapped. A convention already half-forgotten once will be forgotten again, and enforcement is what the issue asked for; ESLint would be the better home for it but there is no ESLint in this repo yet (#60). The test walks parens rather than lines, so it also catches a handler whose `async` sits on its own line, and it matches any `*Router` name rather than just `router` — the two ways the existing bare handlers escaped notice. It is deleted along with `asyncRoute` if the project moves to Express 5, which forwards rejections natively.
No behaviour changes on the success path; the failure path turns a hung request into a logged 500.
Closes#59
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Adds favorites as another dimension of the existing storefront filter rather than a separate view, so it lives in the URL, shows up as a removable chip, and combines with category, tags, and price by AND like everything else. A customer can ask for "my favorites under $500 in Furniture" instead of only "my favorites".
Sold favorites are included. The storefront shows sold items everywhere else, and a favorite that has just sold is often exactly what the customer came back to look at after being emailed about it in #34. Hiding them would make items disappear from a list the customer curated themselves. Anyone wanting only what they can still buy can combine the toggle with the status filter.
Which customer "my favorites" means comes from the session, never from the query string, so a hand-edited URL cannot name someone else's favorites. A signed-out visitor sees the toggle and gets the same inline register/login prompt the heart button and Add to Cart already use; signing in resolves the gate and the filter applies on its own. A bookmarked favorites link whose session has expired says so rather than rendering an empty grid, which would tell the visitor they have no favorites instead of that we do not know who they are. The API answers 401 for the same reason, and the admin inventory refuses the filter outright rather than ignoring it.
The shared SQL builder now requires callers to say whose favorites they mean, even when that is nobody, and throws instead of dropping the clause — a future caller that forgets the guard fails loudly rather than quietly returning the whole catalogue.
Verified with 59 unit tests, 134 backend integration tests, and 70 end-to-end tests, all passing, with type checking clean on both sides.
Seven reported items, of which the first four had two root causes.
The active tab was invisible in dark mode because colorPrimary was
hardcoded to #1a1a1a in both themes. The accent now inverts with the
theme, and colorTextLightSolid inverts with it, or a near-white accent
would get antd's default white label and disappear.
The Category tab, Tag tab, and item-form category selector ignored the
theme entirely. antd declares main: lib/index.js and module: es/index.js,
so importing from 'antd' resolves to the ES build while 'antd/lib/...'
loads the CommonJS one — two copies, two React contexts, and no
ConfigProvider for anything deep-imported. Switching those files to
antd/es/* keeps the deep-import convention and shares the instance. This
was introduced by my own use of the lib path; es is correct under Vite.
Two storefront components had the same latent bug.
"Colour" is now "Color".
The Customers tab shows how many items each customer is holding, as a
link opening the item list with a Release button. Release mirrors the
customer's own cart removal — drop the cart row, return the item to
available, guarded on 'reserved' so it can never resurrect a sold item —
and deliberately sends no email about an action the customer did not
take. The count is a subquery rather than another join, which would have
multiplied rows and inflated order_count and total_spent_cents.
The Inventory tab filters by category, tags, price, and status, reusing
the storefront's parser and query builder so the two cannot drift.
Reserved is one option in a Status filter rather than a standalone toggle.
Also fixes two defects the screenshots exposed: the reserved-count link
bubbled to the row handler and opened the customer drawer behind the
dialog, and .admin-category-node had no CSS at all, so the tree node name,
item count, and actions ran together as one string.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The storefront showed no inventory after deploying the categories/tags
release. No data was lost: the code queried categories/item_tags/
items.category_id against a database where the migration had not been
run, and that failure was invisible at every layer.
Three changes, each addressing one layer:
Migrations now run at container start, so deployed code cannot be ahead
of the schema and the easily-forgotten manual `docker exec migrate.js
up` step disappears. migrate.js waits for Postgres to accept
connections first, since the NAS brings the DB container up slower than
the app, and still exits non-zero so a bad migration stops the
container rather than serving a half-migrated schema.
Express 4 does not forward a rejected async handler, and no error
middleware was mounted, so a failing query never responded at all. Async
routes are now wrapped and an error middleware guarantees a 500. A hung
request is indistinguishable from an empty result in the UI, which is
how a schema mismatch came to read as "the store has no items".
The storefront now separates "request failed" from "no items" and offers
a retry. fetchItems/fetchFilterOptions throw on a non-OK response rather
than returning the parsed error body, which would have been set as the
item list and crashed the grid on .map.
Also restores the project-context update from 7fb5764, which was left
out of PR #24 and ended up dangling.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Adds a self-referencing categories tree, a tag registry with
deterministic colours, and item_tags, plus admin CRUD for both.
GET /api/items now accepts category, tags, min_price and max_price.
Category matching walks the subtree with a recursive CTE so selecting a
parent includes everything filed beneath it; tags match with AND via a
count check, since ANY() alone would return items carrying only one of
them. Malformed filter params return 400 rather than being ignored, so a
broken link doesn't quietly list the whole catalogue.
GET /api/filters serves the drawer its tree, tags, and price bounds in
one request.
Item image/tag aggregation moves from LEFT JOIN + GROUP BY to scalar
subqueries. Joining two one-to-many relations multiplies their rows, so
an item with 2 images and 3 tags would have repeated every image three
times once tags were added.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
bermudalamb
