read-trans: Tanglish explainer for YouTube transcripts, with eval

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tests/evals/read_trans/check_output.py

@@ -0,0 +1,24 @@
+"""Check a read-trans output file: python check_output.py output.md  (exit 1 on failure)."""
+import re, sys
+
+text = open(sys.argv[1], encoding="utf-8").read()
+low = text.lower()
+fails = []
+
+def need(ok, msg):
+    if not ok:
+        fails.append(msg)
+
+for h in ("video enna solluthu", "medium explanation", "final takeaway", "projects-ku enna pannanum"):
+    need(h in low, f"missing section: {h}")
+need(not re.search(r"[\u0b80-\u0bff]", text), "Tamil script found (should be Tanglish)")
+need(not re.search(r"\b\d+:\d{2}\b", text), "timestamp leaked into output")
+need(not re.search(r"chapter \d", low), "chapter marker leaked")
+need("```" in text, "no ready-to-copy prompt block in the projects section")
+need(len(re.findall(r"\b(irukku|panna|pannanum|solluthu|romba|idhu|athu|aana|illa)\b", low)) >= 8, "not enough Tanglish words")
+need("subscribe" not in low, "sponsor/subscribe plug repeated")
+need("$137" in text and "$22" in text, "model costs missing")
+need(len(text.split()) < 700, "too long (>700 words)")
+
+print("\n".join(["FAIL: " + f for f in fails]) or "PASS")
+sys.exit(1 if fails else 0)