Logo — three separate faults, all of which had to be fixed for the
letterhead logo to print at all:
1. receipt.html hardcoded '/wfdash-logo.png' for the sale slip, so it
printed the app's bundled mark (the solid black W block) and never
looked at the letterhead at all.
2. The paths that DID use the letterhead (printTest, cashup) passed
PocketBase's fully-qualified cross-origin URL into imageToRaster(),
which draws to a <canvas> — getImageData() taints and throws on a
cross-origin image, so the .catch(() => null) silently dropped the
logo. pos-letterhead-service now returns a same-origin
/api/v1/files/... URL (per AGENTS.md's file-URL rule).
3. letterhead_settings wasn't whitelisted in that file proxy, so the
same-origin URL would have 403'd.
Verified against the live WESTSCOTT letterhead: its SVG rasterizes to
384x137 at ~15% ink coverage (line art), no tainted canvas.
Also fixes the company name never printing: every builder read
`letterhead.name`, but the POS letterhead record exposes
`display_name` — so the name line silently rendered empty on every
slip, on screen and on paper.
Delivery note now matches the sale slip, per request: gains the logo
and business_info blocks and the same 2x-size title, instead of being
a stripped-down variant. This also reconciles the transport
divergence flagged earlier (Bluetooth baked business info into its
header; the network builder omitted it entirely) — it is now one
reorderable business_info block on both.
resolveBlocks() now slots a newly-shipped block in at its intended
position rather than appending it to the end. Without this, any
letterhead with an already-saved layout would have printed the new
logo/business_info blocks BELOW the signature line.
Root cause of the oversized/wrapping text on the printed slip: ePOS-
Print XML's <text> attributes (width, height, em) are stateful on the
printer — they persist across subsequent <text> tags until explicitly
changed back, not per-tag like CSS. The sale slip's header_title block
sets width="2" height="2" for the big title and nothing after it ever
reset back to width="1" height="1", so the entire rest of the receipt
(business info, items, totals, payment, footer) inherited double-size
text — exactly the wrapping/misalignment seen in the photo. Same
issue existed in the delivery note (header's height="2" leaking into
every line after it) and cash-up (GRAND TOTAL's em="true" leaking
into CASH RECONCILIATION's non-bold lines).
Now every <text> tag in all three XML builders explicitly declares
width/height/em rather than relying on inheritance from whatever
tag ran before it. This isn't just a display fix — since blocks are
now user-reorderable/toggleable, no block can safely assume what
state a neighboring block left behind; every block must be correct
in isolation regardless of order.
Same class of bug existed on the Bluetooth ESC/POS side: ESC/POS's
alignment command is equally persistent, and the sale slip's
header_title centered the title but relied on the next block
(business_info) to reset it back to left — broken the moment
business_info is disabled or reordered. Fixed the same way: each
block resets what it changed before returning.
Also fixes a live bug found while refactoring: buildEscPos returned a
Uint8Array, but its caller in printThermalBluetooth() ran the result
through TextEncoder.encode() (which expects a string) before writing
to the Bluetooth characteristic — encoding a Uint8Array's default
toString() ("27,64,27,...") instead of the actual bytes. Regular
(non-account) sale slips printed over Bluetooth have been sending
garbled data. Both builders now return plain strings, matching
buildEscPosDelivery's already-correct pattern.
Also preserves a pre-existing divergence rather than silently
resolving it: Bluetooth's delivery note prints letterhead business
info (name/address/phone/VAT), the network XML version never has.
Kept as-is per transport (folded into Bluetooth's header_title block)
rather than unilaterally adding or removing content — worth an
explicit decision later on which behavior is correct.
Added support for discounts in the POS checkout process, allowing operators to apply either a fixed amount or a percentage off the gross total. Updated the state management to include discount details and modified the receipt and cart rendering to display pre- and post-discount values. Enhanced the checkout API to handle discount inputs and ensure proper calculations. Updated relevant tests to cover new discount logic.
The Include-prices toggle drives both the on-screen slip and the
Bluetooth thermal print, so what prints matches what the operator saw.
Co-Authored-By: Claude <noreply@anthropic.com>
pb-config.js deliberately not copied — it hardcoded a PocketBase
superuser email/password in client-shipped JS.
Co-Authored-By: Claude <noreply@anthropic.com>
