An invoice's finalisation-time PDF render/store (fds__setInvoiceFile) can fail silently; the row stays finalised with [file] = NULL and inv/rdoc (the invoice list's preview icon) 404'd forever with no trace in any log. - inv/rdoc and rem/idoc now regenerate and persist a missing document on read, mirroring the legacy VB "idoc" fallback (Fuchs_Database ADR 0025), gated to finalised + non-external invoices only — a draft render must never be persisted, since fds__setInvoiceFile/fds__setReminderFile only write WHERE [file] IS NULL and finalisation would then silently no-op. - StoreInvoiceDocumentFileAsync/StoreReminderDocumentFileAsync now log every distinct failure (render threw, render produced 0 bytes, DB write threw, DB write matched 0 rows) instead of collapsing them into a single silent empty-array return. The 0-rows case needed switching from setSQLValue_async (reports success once the command completes, whatever the row count) to setSQLValue_async_result, whose AffectedRows makes a no-op UPDATE distinguishable from an actual write for the first time. - HandleRequestIdoc/HandleReminderIdoc no longer treat StoreInvoiceDocumentFileAsync's Array.Empty<byte>() failure signal as success (a bare `ct == null` check never caught it), which would have served a 0-byte "PDF". - rdoc/HandleRequestIdoc reject a missing 'id' form field instead of doing wasted work with an empty id. - _BackupAndClearInvoiceFile.sql is annotated as a manual-only maintenance utility, never called from app code, so it's clear why running it leaves no application log trail. - Client-side: $inv.pdfPreviewTimeout was 120 (ms) instead of 120000 — the preview dialog was timing out client-side after 120ms on every call. - Fixed a genuine process-wide test flake: PdfPipelineTests and ERechnungMapperTests both install PdfSharp's global font resolver, and whichever ran first would win, making the other's tests fail deterministically once eRechnungLib's SystemFontResolver got there first. FuchsPdf.EnsureFontResolver is now also race-safe under concurrent first use (a check-then-set without a lock). Also removed the InvoiceService.PublishAsync failure logging added mid-session after code review found it duplicated every call site's own, more detailed logging against ADR 0024's single-write-path rule. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Decisions
This folder holds Architecture Decision Records (ADRs) — short, immutable records of a specific technical choice, why it was made, and what it implies going forward.
What belongs here
A decision, not a how-to. If it answers "why do we do X this way, and what
else did we consider," it's a decision. If it explains "how subsystem X
currently works," that belongs in ../Concepts
instead (and a decision often triggers a concept doc to be created/updated).
File naming
NNNN-kebab-case-title.md, four-digit zero-padded, sequential across the
whole folder (0001-..., 0002-...). Never reuse or renumber.
Required YAML frontmatter
Every decision file starts with:
---
status: Accepted # Proposed | Accepted | Superseded
date: 2026-07-03 # date the decision was accepted
applyTo: # glob(s) — files/areas this decision governs
- "Fuchs/Notifications/**"
supersededBy: "" # filename of the decision that replaced this one, if any
---
Agents (Claude, Copilot, Codex) must scan the YAML frontmatter of every file
in this folder first (cheap — no need to read the body) and only read the
full body of decisions whose applyTo glob matches the files they're about
to touch, or whose subject is otherwise clearly relevant to the task. This
keeps decision-following cheap even as the folder grows.
Body template
# NNNN — Title
## Context
What problem/situation forced a choice.
## Decision
What was decided, stated plainly.
## Consequences
What this implies for future code — constraints, follow-ups, trade-offs
accepted knowingly.
## Alternatives considered
Options that were rejected and why (optional but preferred).
Rules
- Decisions are immutable once
Accepted. Do not edit the Decision/ Consequences of an existing file to reverse it. Instead, write a new decision, set itsapplyTo/subject accordingly, and set the old file'sstatus: Superseded+supersededBy: NNNN-new-file.md. - Follow existing decisions. Before implementing anything in an area
covered by an
Accepteddecision, read it and conform to it. If you believe a decision is wrong, raise it with the user rather than silently deviating. - Capture new decisions as they happen. Whenever the user (or the code
you're writing) settles a non-obvious architectural or cross-cutting
choice — not a routine implementation detail — add a decision here in the
same change, and create/update the matching concept doc in
../Concepts.