diff --git a/config/quality/file-size-baseline.json b/config/quality/file-size-baseline.json
index b589c177cb..fbcb5e9fc1 100644
--- a/config/quality/file-size-baseline.json
+++ b/config/quality/file-size-baseline.json
@@ -182,7 +182,7 @@
     "open-sse/services/tokenRefresh.ts": 2181,
     "open-sse/services/usage.ts": 3454,
     "open-sse/translator/request/openai-to-gemini.ts": 906,
-    "open-sse/translator/request/openai-to-kiro.ts": 853,
+    "open-sse/translator/request/openai-to-kiro.ts": 890,
     "open-sse/translator/response/openai-responses.ts": 1092,
     "open-sse/utils/cursorAgentProtobuf.ts": 1521,
     "open-sse/utils/stream.ts": 2727,
@@ -314,7 +314,7 @@
     "tests/unit/translator-helper-branches.test.ts": 870,
     "tests/unit/translator-openai-responses-req.test.ts": 1172,
     "tests/unit/translator-openai-to-gemini.test.ts": 1579,
-    "tests/unit/translator-openai-to-kiro.test.ts": 1093,
+    "tests/unit/translator-openai-to-kiro.test.ts": 1234,
     "tests/unit/translator-resp-gemini-to-openai.test.ts": 1234,
     "tests/unit/usage-service-hardening.test.ts": 1633,
     "tests/unit/vscode-token-routes.test.ts": 1212,
@@ -373,5 +373,6 @@
   "_rebaseline_2026_06_25_rc17b_leva2": "rc17 leva2 PR batch own growth (cohesive, not extractable): providerLimits.ts 950->955 (#4786 generalized accesstoken fallback); default.ts NEW frozen entry at 828 (#4729 anthropic-compatible Bearer + #4766 json_schema fallback + #4787 cline workos headers — three provider-specific header branches); openai-to-kiro.ts 807->814 (#4763 Claude-capability image gate); openai-responses.ts 923->937 (#4764 computeFinishReason guard); executor-default-base.test.ts 1339->1440 (#4766 json_schema fallback tests); translator-openai-to-kiro.test.ts 918->980 (#4763 non-Claude image gate tests).",
   "_rebaseline_2026_06_27_v3838_filesize_drift": "Mid-cycle drift on release/v3.8.38 — feature/fix growth from already-merged PRs that the fast-path (PR->release skips check:file-size) let accumulate without a bump. src/shared/constants/sidebarVisibility.ts 1100->1198 (+98 = #3812 colored menu-icon support, per-item accent map across the sidebar entries; #5142 then dropped one orphan settings entry, net still above the frozen). src/sse/handlers/chat.ts 1560->1575 (+15 = #5064 self-inflicted-timeout cooldown skip + #5124 long OpenAI-compatible SSE hardening + #5110 embed-WS LIVE_WS_HOST honour / early empty-message reject). Localized feature/fix code next to existing branches, each covered by its own PR tests; not extractable without hiding the chokepoint. Structural shrink of chat.ts tracked in #3501.",
   "_rebaseline_2026_07_05_6211_providerlimits_fetch_timeout": "PR #6211 own growth: src/app/(dashboard)/dashboard/usage/components/ProviderLimits/index.tsx 1121->1127 (+6 = data-timeout guard for the quota page's two first-paint fetches — a PROVIDER_LIMITS_FETCH_TIMEOUT_MS const + fetchWithTimeout at the /api/providers/client and /api/usage/provider-limits call sites — so a never-settling connection can no longer wedge initialLoading on the skeleton, same infinite-skeleton class the PR also fixes on the providers page). Cohesive fix code at the existing fetch chokepoints (the 5-line rationale comment explains why a timeout/abort is needed where a try/catch only rescues a rejection); not extractable. Covered by tests/unit/providers-page-data-timeout.test.ts. Fast-path PR->release skips check:file-size, so this bump lands with the PR. Structural shrink of this file tracked in #3501.",
-  "_rebaseline_2026_07_05_6154_copilot_catalog_helpers": "PR #6154 own growth: src/app/(dashboard)/dashboard/providers/[id]/providerPageHelpers.ts 1021->1034 (+13 = GitHub Copilot catalog refresh — model-section helper wiring for the refreshed passthrough/compatible model lists). Cohesive UI-helper growth alongside the registry/modelSpecs catalog refresh; not extractable. Covered by the PR's provider-registry-github-copilot-* unit tests. Fast-path PR->release skips check:file-size, so this bump lands with the PR (contributor backryun)."
+  "_rebaseline_2026_07_05_6154_copilot_catalog_helpers": "PR #6154 own growth: src/app/(dashboard)/dashboard/providers/[id]/providerPageHelpers.ts 1021->1034 (+13 = GitHub Copilot catalog refresh — model-section helper wiring for the refreshed passthrough/compatible model lists). Cohesive UI-helper growth alongside the registry/modelSpecs catalog refresh; not extractable. Covered by the PR's provider-registry-github-copilot-* unit tests. Fast-path PR->release skips check:file-size, so this bump lands with the PR (contributor backryun).",
+  "_rebaseline_2026_07_05_6213_kiro_thinking_filesize": "PR #6213 own growth (kiro adaptive-thinking -> reasoning_content, +384): open-sse/translator/request/openai-to-kiro.ts 853->890 (+37 = additionalModelRequestFields builder for adaptive thinking: output_config.effort + thinking:{type:adaptive} + max_tokens, only when the request asked for thinking) and tests/unit/translator-openai-to-kiro.test.ts 1093->1234 (+141 = adaptive-thinking request/frame regression cases). The fast-path PR->release does NOT gate check:file-size on the merge, so this cohesive feature growth accumulated on the release tip (see the 2026-07-02 #5798 note for the same pattern). Superseded by the release captain's rebaseline-at-release."
 }