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R0bynZhu 7690ba4446 feat(slides): lint slide writes server-side, add --no-lint to opt out (#2607)
+create, +add-slide, +update-slide and +replace-slide are the four
shortcuts that change slide content, so they are the four that can ask
the backend to check the page before accepting the write. All four now
send lint_xml=true by default and lint_xml=false when --no-lint is
passed. The subject of the check is the page the write produces, not the
payload it was handed: +replace-slide submits fragments, and a fragment
that is correct on its own can still push a neighbour off the canvas.

The switch travels in the request body rather than the query string. A
query parameter has to be declared in the gateway's own api meta before
it is bound to a field, and the published definition of these endpoints
does not list one — so an undeclared parameter is dropped, the field
arrives unset, and the server reads it as "not requested". Verified
against a live backend: pages that asked to be linted were written
unlinted, with nothing anywhere to say so. Body fields ride along with
the JSON already being sent and need no registration.

The value is sent explicitly in both directions rather than omitted when
on. The parameter is newer than the registry, so the server-side default
is not something this CLI can read anywhere, and a request that states
the value keeps meaning the same thing if that default ever moves.

A refusal is passed through verbatim. The message field carries the lint
report itself — the same document the lint tool writes when it is run by
hand — and the same refusal reaches callers through `lark-cli api` as
well, where nothing rewrites it. Rendering it to prose here would give
one refusal two formats depending on which command produced it. Each
finding carries the numbers behind its own rule, and which numbers those
are differs per rule, so nothing is decoded that is not used: the report
is what the caller reads.

The refusal is recognised by its error code, 4000153, which the engine
raises for nothing else and which reaches the CLI unchanged. Matching on
the shape of the message instead would mean claiming any JSON that
resembles a report, and a false positive there rewrites the hint of an
error this code does not understand.

What the backend cannot say goes in the hint instead: how many findings
refused the write, that the page did not land, and --no-lint, which is a
CLI flag the server has never heard of. The count is summary.error_count
rather than the number of findings, because errors are what refuse a
page — the same line the lint tool draws when it is run by hand, exiting
non-zero on error_count alone. A report can arrive with warnings beside
its errors, and counting those too would send the caller hunting for
blockers that are not there. A message that does not parse still gets
the hint: the escape hatch is the half of it they cannot get anywhere
else, and withholding it over a missing number helps nobody.

The hint names no page. Every write path submits exactly one page, so a
finding's slide_number is its position inside that submission and is
always 1 — which is not the page the caller is looking for. On +create
it is actively wrong: it would read "on slide 1" next to a progress line
saying "adding slide 2/3 failed". The page number has one source, and it
is that line.

Findings that did not refuse the write come back the other way. The
backend returns them in an issues field on a response that succeeded, and
all four shortcuts now pass that field through untouched rather than
dropping it. It only ever arrives on a page that was written: anything
serious enough to refuse the write left as the error above, carrying the
same report. Dropping it would leave the caller believing the deck says
exactly what they wrote, with no way to learn otherwise short of looking
at the rendered page. It is passed through rather than reformatted so
that one field reads the same however the page was written.

+create keeps adding its pages one at a time, so a refusal there can
arrive with the presentation and some of its pages already written. It
is reported as such: the error carries the lint report and, next to it,
which page was refused and how many landed before it, so the retry adds
the rest instead of building a second deck. +replace-pages does the same
for the items in its plan.

A batch that was told to keep going reports its failures only through the
per-item records, so those carry the report, the code and the flag hint
as well; a record built from the error's message alone would have named
neither the refusal nor the way past it. The position stays on the
returning path, where it is the only thing that says how far the batch
got — beside a per-item record it would describe a batch that did not
stop.

Tests assert on the wire — the body the stub actually received — rather
than on the builder's return value, so a command that stops calling its
own builder still fails.
2026-09-03 14:04:05 +08:00
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