feat(api): add memoir image placeholder parsing

Made-with: Cursor

api/services/memoir_images/parser.py

@@ -0,0 +1,49 @@
+import re
+from typing import Any
+
+PLACEHOLDER_RE = re.compile(r"\{\{\{\{IMAGE:(.*?)\}\}\}\}")
+
+
+def parse_image_placeholders(content: str, max_images: int) -> list[dict[str, Any]]:
+    items: list[dict[str, Any]] = []
+    for match in PLACEHOLDER_RE.finditer(content or ""):
+        description = match.group(1).strip()
+        if not description:
+            continue
+        items.append(
+            {
+                "index": len(items),
+                "description": description,
+                "placeholder": match.group(0),
+                "start_offset": match.start(),
+            }
+        )
+        if len(items) >= max_images:
+            break
+    return items
+
+
+def build_initial_image_assets(
+    placeholders: list[dict[str, Any]],
+    provider: str,
+    style: str,
+    size: str,
+    now_iso: str,
+) -> list[dict[str, Any]]:
+    return [
+        {
+            "index": item["index"],
+            "placeholder": item["placeholder"],
+            "description": item["description"],
+            "prompt": None,
+            "url": None,
+            "status": "pending",
+            "provider": provider,
+            "style": style,
+            "size": size,
+            "error": None,
+            "created_at": now_iso,
+            "updated_at": now_iso,
+        }
+        for item in placeholders
+    ]