chore(ci): rebaseline file-size ceilings from the owner merge batch

## Summary

- Re-measure the five files this owner merge-batch pushed over the frozen ceilings, on release/v3.8.52 at d50cd807. No slack.
- `open-sse/executors/base.ts` 1743→1745 (#16621), `open-sse/handlers/chatCore/streamingResponse.ts` 1308→1309 (#16705), `open-sse/handlers/chatCore.ts` 3938→3943 (#16720), `open-sse/translator/response/openai-responses.ts` 1547→1590 (#16645), `tests/unit/provider-validation-specialty.test.ts` 2912→2965 (#16625).
- `node scripts/check/check-file-size.mjs` exits 0 on this branch. README drift (#16132) and the inherited doc-source drift were not stamped.

⚠️ base-red inherited: #15306

Thanks @diegosouzapw.

config/quality/file-size-baseline.json

@@ -302,6 +302,7 @@
     "_rebaseline_2026_10_07_15481_turn_pin_failover": "PR #15481 (JxnLexn): tests/unit/sse-auth.test.ts 1733->1740 (+7 = one regression test: an inactive allowed account returns null instead of the #13832 blockedByKeyPolicy 403).",
     "_rebaseline_basered_codebuddy_cn": "Base-red fix (#4664 CodeBuddy CN): oauth-providers-config.test.ts 867->870 (+3) to align the EXPECTED provider list/config with the codebuddy-cn provider that #4664 added to the registry without updating this test (it asserts 'exactly once').",
     "_rebaseline_pr4613_compatible_provider_groups": "Reconcile #4613 already-merged growth: providers-page-utils.test.ts 1004->1052 (+48, buildCompatibleProviderGroups partition unit test). Fast-gate PR->release does not run check:file-size, so this surfaced post-merge.",
+    "_rebaseline_2026_10_15_owner_batch_1015": "Owner merge-batch 2026-10-15 follow-up, re-measured with split(\"\\n\").length on release/v3.8.52 @d50cd807. tests/unit/provider-validation-specialty.test.ts 2912->2965 (#16625). No slack. The frozen-object copy of this test file is a different key and was left unchanged.",
     "tests/integration/chat-pipeline.test.ts": 1756,
     "tests/unit/account-fallback-service.test.ts": 2079,
     "tests/unit/batch_api.test.ts": 1353,
@@ -318,7 +319,7 @@
     "tests/unit/models-catalog-route.test.ts": 1655,
     "tests/unit/perplexity-web.test.ts": 1384,
     "tests/unit/provider-models-route.test.ts": 1783,
-    "tests/unit/provider-validation-specialty.test.ts": 2912,
+    "tests/unit/provider-validation-specialty.test.ts": 2965,
     "tests/unit/reasoning-cache.test.ts": 1291,
     "tests/unit/response-sanitizer.test.ts": 1252,
     "tests/unit/route-edge-coverage.test.ts": 1244,
@@ -542,15 +543,16 @@
     "_rebaseline_2026_10_08_14131_twinmind_discovery": "PR #14131 (artickc) reconcile onto release/v3.8.52 (2026-10-08): src/app/api/providers/[id]/models/route.ts tip ceiling 2452 -> 2460 (+8 = one import of the extracted ./twinmindDiscovery handler plus its dispatch call). The Conol and Twinmind handlers now share one webDiscoveryArgs object, cutting the PR growth from +17 to +8; the discovery logic itself lives in twinmindDiscovery.ts (under cap). Measured with split(\"\\n\").length on the merged tree. Covered by tests/unit/executor-twinmind.test.ts.",
     "_rebaseline_pr1043_minimax_tts": "Upstream port decolua/9router#1043 (toanalien) own growth: audioSpeech.ts 965->1061 (+96). Adds MiniMax T2A v2 TTS dispatch (handleMinimaxSpeech + hexToBytes helper) — provider entry was already in audioRegistry (format: minimax-tts) but no handler existed, falling through to the OpenAI-compatible default that fails (T2A has custom shape + hex-encoded audio + base_resp envelope). New branch sits next to the other inline provider branches (xiaomi-mimo, coqui, tortoise, aws-polly) — extracting would just create indirection. Covered by tests/unit/minimax-tts-1043.test.ts (3 tests, GREEN: success, base_resp error, invalid-hex).",
     "_rebaseline_pr4592_exclude_exhausted_auto": "Reconcile #4592 already-merged growth: combo.ts 2991->3036 (+45, terminal-status quota-cutoff exclusion in buildAutoCandidates + opt-in gate). Fast-gate PR->release does not run check:file-size.",
+    "_rebaseline_2026_10_15_owner_batch_1015": "Owner merge-batch 2026-10-15 follow-up, re-measured with split(\"\\n\").length on release/v3.8.52 @d50cd807 after the wave. No slack. open-sse/executors/base.ts 1743->1745 (#16621 parseTokenExpiryMs); open-sse/handlers/chatCore/streamingResponse.ts 1308->1309 (#16705); open-sse/handlers/chatCore.ts 3938->3943 (#16720 type narrowing before hoistDeferredToolsForTarget); open-sse/translator/response/openai-responses.ts 1547->1590 (#16645 declared tool-name canonicalization). Each file stays frozen at the measured size. README i18n drift (#16132) and the inherited doc-source drift (#15306) were not stamped.",
     "open-sse/executors/antigravity.ts": 1708,
-    "open-sse/executors/base.ts": 1743,
+    "open-sse/executors/base.ts": 1745,
     "open-sse/executors/codex.ts": 1526,
     "open-sse/executors/cursor.ts": 1857,
     "open-sse/executors/deepseek-web.ts": 1221,
     "open-sse/executors/default.ts": 1213,
     "open-sse/executors/opencode.ts": 1532,
-    "open-sse/handlers/chatCore.ts": 3938,
-    "open-sse/handlers/chatCore/streamingResponse.ts": 1308,
+    "open-sse/handlers/chatCore.ts": 3943,
+    "open-sse/handlers/chatCore/streamingResponse.ts": 1309,
     "open-sse/handlers/imageGeneration.ts": 3390,
     "open-sse/handlers/responseSanitizer.ts": 1214,
     "open-sse/handlers/search.ts": 1805,
@@ -563,7 +565,7 @@
     "open-sse/services/combo/executeTargetAttempt.ts": 1284,
     "open-sse/services/combo/roundRobinCombo.ts": 1288,
     "open-sse/services/rateLimitManager.ts": 1329,
-    "open-sse/translator/response/openai-responses.ts": 1547,
+    "open-sse/translator/response/openai-responses.ts": 1590,
     "open-sse/utils/cursorAgentProtobuf.ts": 1622,
     "open-sse/utils/error.ts": 1217,
     "open-sse/utils/proxyFetch.ts": 1360,