update

backend/rules.py

@@ -14,7 +14,7 @@ import json
 from database import list_block_scores_all, subs_per_level_all, list_guides
 from guide import guide_slot_files
 from learning import cap_final, LEVELS, _threshold
-from paths import blocks_path, guide_content_path
+from paths import guide_content_path
 from textkit import _norm_title
 
 MAX_OFFENE_GUIDES = 3
@@ -128,13 +128,16 @@ def formats_stats(guides: list[dict], levels: dict[str, dict[str, set[str]]]) ->
     return formats
 
 
-def guide_lock(topic: str, fmt: str, guides: list[dict], levels: dict[str, dict[str, set[str]]]) -> str | None:
+def guide_lock(topic: str, fmt: str, guides: list[dict], levels: dict[str, dict[str, set[str]]],
+               has_blocks: bool) -> str | None:
     """Reason why a fresh start for topic+format is locked — None = allowed.
 
     Exactly the rules from POST /guides: blocks required, no duplicate start,
     learning debt only for genuine new creations (resume/regenerate are free).
+    `has_blocks` = DB consensus blocks OR the legacy blocks.md exist — checked by the
+    caller, because generate_guide builds from the DB (a paused inventory writes no file).
     """
-    if not blocks_path(topic).exists():
+    if not has_blocks:
         return "Create blocks first"
     for g in guides:
         if g["topic"] == topic and g["format"] == fmt and g["status"] in ("queued", "generating"):