The thinking-level fix (e07b47ee4) added SummaryOptions.thinkingLevel
and threaded it from agent-session.ts into compact(), but the
field-by-field rebuild of summaryOptions inside compact() (and a
second inline rebuild for generateShortSummary) silently dropped it.
Effect on every call site that fans through compact():
generateSummary, generateTurnPrefixSummary, generateShortSummary all
see options?.thinkingLevel === undefined => resolveCompactionEffort
falls back to Effort.High => user's /model :off selection is
silently overridden, and xai-oauth/grok-build still trips on the
unsupported-effort path even though fix#2 strips it at the wire
layer of the openai-responses mapper.
Add `thinkingLevel: options?.thinkingLevel` at both rebuild sites in
compact(): the summaryOptions literal feeding generateSummary and
generateTurnPrefixSummary, and the inline options literal feeding
generateShortSummary.
Extend compaction-thinking-level.test.ts with four compact()-level
cases driving isSplitTurn:true so all three summarizers fire:
- Off -> every fan-out call gets reasoning=undefined
- Low -> every fan-out call gets reasoning="low"
- <unset> -> every fan-out call gets reasoning="high" (default)
- grok-build + High -> every fan-out call gets reasoning=undefined (clamp)
TDD red-green verified: stashing the source fix flips the Off and Low
cases to fail with received="high" (exactly the reviewer's prediction);
restoring the fix returns all four to green. Suite: 131 pass / 0 fail
(baseline 127 + 4 new). biome + tsgo --noEmit clean.
Op: correct
Restores: spec:compaction-honors-session-thinking-level
(cherry picked from commit 9b501e369b820cb992345ceb3f2a207ccc9ee233)
