Add CP source adapter registry with multi-worker queues and LLM extract.

Replace legacy root backend/frontend with Telegram, Crawl4AI, and VIINA adapters routed by Redis job families.

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

contracts/queues.py

@@ -0,0 +1,32 @@
+"""Redis queue routing for CP adapter families."""
+
+from __future__ import annotations
+
+# source_type → worker family (separate Redis list + Docker image)
+SOURCE_FAMILY: dict[str, str] = {
+    "telegram": "telegram",
+    "crawl4ai": "web",
+    "viina": "nlp",
+}
+
+LEGACY_JOB_QUEUE_KEY = "cp:jobs"
+QUEUE_PREFIX = "cp:jobs"
+
+
+def family_for_source(source_type: str) -> str:
+    try:
+        return SOURCE_FAMILY[source_type]
+    except KeyError as exc:
+        raise ValueError(f"Unknown source_type: {source_type}") from exc
+
+
+def queue_key_for_source(source_type: str) -> str:
+    return f"{QUEUE_PREFIX}:{family_for_source(source_type)}"
+
+
+def queue_key_for_family(family: str) -> str:
+    return f"{QUEUE_PREFIX}:{family}"
+
+
+def known_source_types() -> list[str]:
+    return sorted(SOURCE_FAMILY.keys())