feat(auth): authentication module with multi-tenant isolation (RFC-001)

Introduce an always-on auth layer with auto-created admin on first boot,
multi-tenant isolation for threads/stores, and a full setup/login flow.

Backend
- JWT access tokens with `ver` field for stale-token rejection; bump on
  password/email change
- Password hashing, HttpOnly+Secure cookies (Secure derived from request
  scheme at runtime)
- CSRF middleware covering both REST and LangGraph routes
- IP-based login rate limiting (5 attempts / 5-min lockout) with bounded
  dict growth and X-Forwarded-For bypass fix
- Multi-worker-safe admin auto-creation (single DB write, WAL once)
- needs_setup + token_version on User model; SQLite schema migration
- Thread/store isolation by owner; orphan thread migration on first admin
  registration
- thread_id validated as UUID to prevent log injection
- CLI tool to reset admin password
- Decorator-based authz module extracted from auth core

Frontend
- Login and setup pages with SSR guard for needs_setup flow
- Account settings page (change password / email)
- AuthProvider + route guards; skips redirect when no users registered
- i18n (en-US / zh-CN) for auth surfaces
- Typed auth API client; parseAuthError unwraps FastAPI detail envelope

Infra & tooling
- Unified `serve.sh` with gateway mode + auto dep install
- Public PyPI uv.toml pin for CI compatibility
- Regenerated uv.lock with public index

Tests
- HTTP vs HTTPS cookie security tests
- Auth middleware, rate limiter, CSRF, setup flow coverage

backend/packages/harness/deerflow/agents/memory/prompt.py

@@ -246,6 +246,10 @@ def format_memory_for_injection(memory_data: dict[str, Any], max_tokens: int = 2
         if earlier.get("summary"):
             history_sections.append(f"Earlier: {earlier['summary']}")
 
+        background = history_data.get("longTermBackground", {})
+        if background.get("summary"):
+            history_sections.append(f"Background: {background['summary']}")
+
         if history_sections:
             sections.append("History:\n" + "\n".join(f"- {s}" for s in history_sections))
 

backend/packages/harness/deerflow/agents/memory/queue.py

@@ -21,6 +21,7 @@ class ConversationContext:
     timestamp: datetime = field(default_factory=datetime.utcnow)
     agent_name: str | None = None
     correction_detected: bool = False
+    reinforcement_detected: bool = False
 
 
 class MemoryUpdateQueue:
@@ -44,6 +45,7 @@ class MemoryUpdateQueue:
         messages: list[Any],
         agent_name: str | None = None,
         correction_detected: bool = False,
+        reinforcement_detected: bool = False,
     ) -> None:
         """Add a conversation to the update queue.
 
@@ -52,6 +54,7 @@ class MemoryUpdateQueue:
             messages: The conversation messages.
             agent_name: If provided, memory is stored per-agent. If None, uses global memory.
             correction_detected: Whether recent turns include an explicit correction signal.
+            reinforcement_detected: Whether recent turns include a positive reinforcement signal.
         """
         config = get_memory_config()
         if not config.enabled:
@@ -63,11 +66,13 @@ class MemoryUpdateQueue:
                 None,
             )
             merged_correction_detected = correction_detected or (existing_context.correction_detected if existing_context is not None else False)
+            merged_reinforcement_detected = reinforcement_detected or (existing_context.reinforcement_detected if existing_context is not None else False)
             context = ConversationContext(
                 thread_id=thread_id,
                 messages=messages,
                 agent_name=agent_name,
                 correction_detected=merged_correction_detected,
+                reinforcement_detected=merged_reinforcement_detected,
             )
 
             # Check if this thread already has a pending update
@@ -130,6 +135,7 @@ class MemoryUpdateQueue:
                         thread_id=context.thread_id,
                         agent_name=context.agent_name,
                         correction_detected=context.correction_detected,
+                        reinforcement_detected=context.reinforcement_detected,
                     )
                     if success:
                         logger.info("Memory updated successfully for thread %s", context.thread_id)

backend/packages/harness/deerflow/agents/memory/updater.py

@@ -246,7 +246,7 @@ def _fact_content_key(content: Any) -> str | None:
     stripped = content.strip()
     if not stripped:
         return None
-    return stripped
+    return stripped.casefold()
 
 
 class MemoryUpdater:
@@ -272,6 +272,7 @@ class MemoryUpdater:
         thread_id: str | None = None,
         agent_name: str | None = None,
         correction_detected: bool = False,
+        reinforcement_detected: bool = False,
     ) -> bool:
         """Update memory based on conversation messages.
 
@@ -280,6 +281,7 @@ class MemoryUpdater:
             thread_id: Optional thread ID for tracking source.
             agent_name: If provided, updates per-agent memory. If None, updates global memory.
             correction_detected: Whether recent turns include an explicit correction signal.
+            reinforcement_detected: Whether recent turns include a positive reinforcement signal.
 
         Returns:
             True if update was successful, False otherwise.
@@ -310,6 +312,14 @@ class MemoryUpdater:
                     "and record the correct approach as a fact with category "
                     '"correction" and confidence >= 0.95 when appropriate.'
                 )
+            if reinforcement_detected:
+                reinforcement_hint = (
+                    "IMPORTANT: Positive reinforcement signals were detected in this conversation. "
+                    "The user explicitly confirmed the agent's approach was correct or helpful. "
+                    "Record the confirmed approach, style, or preference as a fact with category "
+                    '"preference" or "behavior" and confidence >= 0.9 when appropriate.'
+                )
+                correction_hint = (correction_hint + "\n" + reinforcement_hint).strip() if correction_hint else reinforcement_hint
 
             prompt = MEMORY_UPDATE_PROMPT.format(
                 current_memory=json.dumps(current_memory, indent=2),
@@ -441,6 +451,7 @@ def update_memory_from_conversation(
     thread_id: str | None = None,
     agent_name: str | None = None,
     correction_detected: bool = False,
+    reinforcement_detected: bool = False,
 ) -> bool:
     """Convenience function to update memory from a conversation.
 
@@ -449,9 +460,10 @@ def update_memory_from_conversation(
         thread_id: Optional thread ID.
         agent_name: If provided, updates per-agent memory. If None, updates global memory.
         correction_detected: Whether recent turns include an explicit correction signal.
+        reinforcement_detected: Whether recent turns include a positive reinforcement signal.
 
     Returns:
         True if successful, False otherwise.
     """
     updater = MemoryUpdater()
-    return updater.update_memory(messages, thread_id, agent_name, correction_detected)
+    return updater.update_memory(messages, thread_id, agent_name, correction_detected, reinforcement_detected)