## [mirendev/agentic-eph#2](https://github.com/mirendev/agentic-eph/pull/2)

This is ready to merge. I found no correctness problems, and the code does what the description says.

**Contract compatibility.** `docs/api.md` counts a change to an existing field's meaning as a breaking change. The field that comes closest here is `unit_cents`: it used to always equal the menu price and now includes the size adjustment. Older clients don't send `size`, though, so they always get `medium` and a 0¢ adjustment, and every request they can make returns the same `unit_cents`, `line_cents` and totals as before. So I read this as an added optional field plus an added response field, which the contract allows. I checked the docs example by hand (900 − 90 + 71 = 881), and the new examples work out too: 571, 544, 1387 and 1028 all match the round-half-up tax formula in `quoteOrder`.

**Validation and errors.** The unknown-size error is a plain `fmt.Errorf`, and `main.go` sends every error except `ErrEmptyOrder` to 422, so the documented status holds. `TestOrdersEndpointUnknownSize` checks that end to end. Sizes are case-sensitive, as the docs say: `"Large"` returns 422.

**Tests.** `TestQuoteOrder` only compares totals. `TestQuotedLineSize` fills that gap by comparing whole `QuotedLine` structs, so it checks `Size`, `UnitCents` and `LineCents` on each line, including a line that defaults to medium. The endpoint test also confirms that `size` appears in the response JSON.

**Front end.** The `data-id` moved from the input to the row `div`, and nothing else in the repo reads it. The `select` can only send one of the three valid sizes. `capitalize(l.size)` is safe because the server always sets `size`.

**Why I recommend approval:** it's a small change to the demo app, every pricing path it adds has tests, and clients that don't send `size` get exactly the same responses as before.

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**Verdict:** ready