Benson K B f466ea91c9 fix(kilocode): strip unsupported response_format for DeepSeek V4 Flash (400 regression) (#10458) ...

* fix(kilocode): strip unsupported response_format for DeepSeek (400 regression)

kilocode's DeepSeek V4 Flash rejects ANY response_format — both
json_schema AND json_object 400 with 'Invalid input: response_format'
(verified live 2026-08-15 via the Hindsight fact-extraction path on
kilocode/deepseek/deepseek-v4-flash). The default executor's
applyJsonSchemaFallback only covered openai-compatible-* providers and
only downgraded json_schema -> json_object, so kilocode forwarded the
unsupported format raw. Same bug class as the opencode fix #9992.

For kilocode: strip response_format entirely and inject the schema (or a
plain 'valid JSON only' instruction for json_object) into the system
prompt. openai-compatible-* keeps the existing json_schema downgrade and
json_object passthrough (they accept both).

Regression tests: kilocode json_schema is stripped + schema-injected;
kilocode json_object is stripped + JSON-only instruction; both verified
to fail without the fix (sabotage: 2 fail). All 49 executor-default-base
tests pass.

* fix(kilocode): drop as-any casts in new tests to clear the frozen ESLint baseline

The file's frozen no-explicit-any baseline is count 42; the new kilocode
strip tests added 3 net-new 'as any' casts, tripping the --max-warnings 0
lint-guard. Replace them with typed assertions that carry the same checks.

Co-authored-by: diegosouzapw <diegosouza.pw@gmail.com>

---------

Co-authored-by: benzntech <benzntech@users.noreply.github.com>
Co-authored-by: diegosouzapw <diegosouza.pw@gmail.com>

2026-08-15 13:52:11 -03:00

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