📝 docs(tsl): sync api skill with corrected codegen

Mirror docs/tsl/codegen into the bundled tsl-api-reference skill and rebuild the function index.

Remove invalid duplicate API entries for cb_delistedbydate, createhttpsession, exportJsonString, and Anova_Bartlett so exact lookup returns the canonical entries.

skills/tsl-api-reference/scripts/lookup.py

@@ -5,7 +5,8 @@ import re
 import sys
 from pathlib import Path
 
-ENTRY_RE = re.compile(r"^#{2,3}(?!#)\s+`(.+?)`\s*$")
+ENTRY_RE = re.compile(r"^(#{2,3})(?!#)\s+`(.+?)`\s*$")
+HEADING_RE = re.compile(r"^(#{1,6})(?!#)\s+")
 SKILL_ROOT = Path(__file__).resolve().parents[1]
 DEFAULT_TSV = SKILL_ROOT / "data" / "function_index.tsv"
 DEFAULT_CODEGEN_ROOT = SKILL_ROOT / "references" / "codegen"
@@ -70,15 +71,21 @@ def slice_entry(codegen_root, page, signature):
     start = None
     for idx, line in enumerate(lines):
         match = ENTRY_RE.match(line)
-        if match and match.group(1) == signature:
+        if match and match.group(2) == signature:
             start = idx
+            start_level = len(match.group(1))
             break
     if start is None:
         return ""
 
     end = len(lines)
     for idx in range(start + 1, len(lines)):
-        if ENTRY_RE.match(lines[idx]):
+        entry_match = ENTRY_RE.match(lines[idx])
+        if entry_match:
+            end = idx
+            break
+        heading_match = HEADING_RE.match(lines[idx])
+        if heading_match and len(heading_match.group(1)) <= start_level:
             end = idx
             break
     block = lines[start:end]