Add reusable LLM parser profiles with multi-event extract.

Support kind=llm profiles (instruction/schema), optional multi-event posts via #eN URLs, and recover stale running/queued parse jobs after worker crashes.

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

centers/analytics/api/app/models.py

@@ -98,8 +98,11 @@ class ParserProfile(Base):
 
     id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
     name: Mapped[str] = mapped_column(String(255), nullable=False)
+    # heuristic = static rules; llm = instruction + extract_schema at CP runtime
+    kind: Mapped[str] = mapped_column(String(50), default="heuristic", nullable=False, index=True)
     sample_post: Mapped[str] = mapped_column(Text, default="")
     heuristic_profile: Mapped[dict | None] = mapped_column(JSON, nullable=True)
+    llm_profile: Mapped[dict | None] = mapped_column(JSON, nullable=True)
     status: Mapped[str] = mapped_column(String(50), default="draft", index=True)
     created_at: Mapped[datetime] = mapped_column(
         DateTime(timezone=True),