feat: enhance memory API responses with limits and update UI components for memory limit handling

surfsense_backend/app/services/memory/__init__.py

@@ -1,9 +1,11 @@
 """First-class memory service for user and team markdown memory."""
 
+from .schemas import MemoryLimits, MemoryRead
 from .service import (
     MemoryScope,
     SaveResult,
     extract_and_save,
+    memory_limits,
     read_memory,
     reset_memory,
     save_memory,
@@ -18,9 +20,12 @@ from .validation import (
 __all__ = [
     "MEMORY_HARD_LIMIT",
     "MEMORY_SOFT_LIMIT",
+    "MemoryLimits",
+    "MemoryRead",
     "MemoryScope",
     "SaveResult",
     "extract_and_save",
+    "memory_limits",
     "read_memory",
     "reset_memory",
     "save_memory",

surfsense_backend/app/services/memory/schemas.py

@@ -1,4 +1,4 @@
-"""Structured output schemas for memory extraction."""
+"""Schemas for memory API responses and structured extraction."""
 
 from __future__ import annotations
 
@@ -7,6 +7,20 @@ from typing import Literal
 from pydantic import BaseModel, Field
 
 
+class MemoryLimits(BaseModel):
+    """Canonical memory size limits exposed to clients."""
+
+    soft: int
+    hard: int
+
+
+class MemoryRead(BaseModel):
+    """Memory document payload returned by user and team memory APIs."""
+
+    memory_md: str
+    limits: MemoryLimits
+
+
 class MemoryExtractionDecision(BaseModel):
     """Structured extraction result; avoids string sentinel parsing."""
 

surfsense_backend/app/services/memory/service.py

@@ -9,7 +9,6 @@ from typing import Any, Literal
 from uuid import UUID
 
 from langchain_core.messages import HumanMessage
-from pydantic import BaseModel
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
@@ -19,9 +18,10 @@ from app.services.memory.prompts import (
     USER_MEMORY_EXTRACT_PROMPT,
 )
 from app.services.memory.rewrite import forced_rewrite
-from app.services.memory.schemas import MemoryExtractionDecision
+from app.services.memory.schemas import MemoryExtractionDecision, MemoryLimits
 from app.services.memory.validation import (
     MEMORY_HARD_LIMIT,
+    MEMORY_SOFT_LIMIT,
     soft_limit_warning,
     strip_preamble_to_first_heading,
     validate_bullet_format,
@@ -68,8 +68,8 @@ class SaveResult:
         return data
 
 
-class MemoryRead(BaseModel):
-    memory_md: str
+def memory_limits() -> MemoryLimits:
+    return MemoryLimits(soft=MEMORY_SOFT_LIMIT, hard=MEMORY_HARD_LIMIT)
 
 
 def _normalize_scope(scope: MemoryScope | str) -> MemoryScope: