fix(chat): persist/split <thinking>/<thought> blocks like stream UI

Co-authored-by: Cursor <cursoragent@cursor.com>

interfaces/admin/static/chat.js

@@ -1547,10 +1547,12 @@ function hydrateMermaidIn(root) {
 
 const RE_REDACTED_THINKING = new RegExp("<redacted_thinking>\\s*([\\s\\S]*?)\\s*</redacted_thinking>", "i");
 const RE_THINK_TAG = new RegExp("<think\\s*>\\s*([\\s\\S]*?)\\s*</think\\s*>", "i");
+const RE_THINKING_TAG = new RegExp("<thinking\\s*>\\s*([\\s\\S]*?)\\s*</thinking\\s*>", "i");
+const RE_THOUGHT_TAG = new RegExp("<thought\\s*>\\s*([\\s\\S]*?)\\s*</thought\\s*>", "i");
 
 function _findEarliestReasoningBlock(remaining) {
   let best = null;
-  for (const re of [RE_REDACTED_THINKING, RE_THINK_TAG]) {
+  for (const re of [RE_REDACTED_THINKING, RE_THINK_TAG, RE_THINKING_TAG, RE_THOUGHT_TAG]) {
     const m = re.exec(remaining);
     re.lastIndex = 0;
     if (!m) continue;
@@ -1657,7 +1659,7 @@ function extractThinkingFromText(text) {
   const raw = String(text || "");
   if (!raw) return "";
   const blocks = [];
-  for (const re of [RE_REDACTED_THINKING, RE_THINK_TAG]) {
+  for (const re of [RE_REDACTED_THINKING, RE_THINK_TAG, RE_THINKING_TAG, RE_THOUGHT_TAG]) {
     const rr = new RegExp(re.source, "gi");
     for (const m of raw.matchAll(rr)) {
       const inner = String(m[1] || "").trim();

runtime/direct_loop.py

@@ -35,7 +35,10 @@ _DIRECT_LOOP_OC_STAGE: dict[str, str] = {
     "tool_result_context_guard": "tool_context_guard",
     "tool_pairing_guard": "tool_pairing_guard",
 }
-_THINK_BLOCK_RE = re.compile(r"<(think|redacted_thinking)>\s*(.*?)\s*</\1>\s*", flags=re.IGNORECASE | re.DOTALL)
+_THINK_BLOCK_RE = re.compile(
+    r"<\s*(?:antml:)?(think|thinking|thought|redacted_thinking)\s*>\s*(.*?)\s*</\s*(?:antml:)?\1\s*>",
+    flags=re.IGNORECASE | re.DOTALL,
+)
 _DSML_INVOKE_NAME_RE = re.compile(r"invoke\s+name\s*=\s*['\"]([^'\"\s>]+)['\"]", flags=re.IGNORECASE)
 _JSON_TOOL_NAME_RE = re.compile(r"['\"]name['\"]\s*:\s*['\"]([^'\"\s]{1,120})['\"]", flags=re.IGNORECASE)
 _TOOL_WIRE_CACHE_LOCK = threading.Lock()

tests/test_direct_loop_reasoning_split.py

@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+from oclaw.runtime.direct_loop import _split_reasoning_and_body
+
+
+def test_split_reasoning_extracts_thinking_tags() -> None:
+    chunks, body = _split_reasoning_and_body("<thinking>\ninner\n</thinking>\nvisible")
+    assert chunks == ["inner"]
+    assert body == "visible"
+
+
+def test_split_reasoning_extracts_thought_tags() -> None:
+    chunks, body = _split_reasoning_and_body("<thought>x</thought>after")
+    assert chunks == ["x"]
+    assert body == "after"
+
+
+def test_split_reasoning_explicit_when_no_tags() -> None:
+    chunks, body = _split_reasoning_and_body("body only", explicit_reasoning="  rc  ")
+    assert chunks == ["rc"]
+    assert body == "body only"
+
+
+def test_split_reasoning_antml_optional_prefix() -> None:
+    raw = "<antml:thinking>\nZ\n</antml:thinking>\nok"
+    chunks, body = _split_reasoning_and_body(raw)
+    assert chunks == ["Z"]
+    assert body == "ok"