push final changes

app/agents/climate_agent.py

@@ -208,6 +208,11 @@ def advise_climate_resilient(
     a photo is provided and GEMINI_API_KEY is configured. Falls back to
     text-only Qwen when Gemini is unavailable or the image is invalid.
     """
+    if crop and crop.strip().lower() in ("string", "none", "null", ""):
+        crop = None
+    if growth_stage and growth_stage.strip().lower() in ("string", "none", "null", ""):
+        growth_stage = None
+
     gemini_client = load_gemini_client()
     use_multimodal = gemini_client is not None and image_bytes is not None
 

app/main.py

@@ -487,9 +487,16 @@ async def advise_climate_resilient_endpoint(
 
     Rate limited: 10 requests per minute per IP (higher compute cost).
     """
-    if not session_id:
+    if session_id and session_id.strip().lower() in ("string", "none", "null", ""):
+        session_id = str(uuid.uuid4())
+    elif not session_id:
         session_id = str(uuid.uuid4())
 
+    if crop and crop.strip().lower() in ("string", "none", "null", ""):
+        crop = None
+    if growth_stage and growth_stage.strip().lower() in ("string", "none", "null", ""):
+        growth_stage = None
+
     logging.info(f"Advise request: {query[:50]}... [session_id={session_id}]")
     
     image_bytes = await photo.read() if photo is not None else None

app/utils/text_cleaning.py

@@ -119,7 +119,8 @@ def cap_summary(
 ) -> List[str]:
     """
     Return the first `max_sentences` sentences, truncated so the joined
-    output does not exceed `max_chars` characters.
+    output does not exceed `max_chars` characters. Preserves complete sentences
+    whenever possible without cutting off in the middle of words.
     """
     if not sentences:
         return []
@@ -130,14 +131,11 @@ def cap_summary(
         # +1 accounts for the joining space between sentences.
         prospective = total + len(sentence) + (1 if kept else 0)
         if prospective > max_chars:
-            remaining = max_chars - total - (1 if kept else 0)
-            if remaining <= 0:
-                break
-            sentence = sentence[:remaining].rstrip()
-            if not sentence:
-                break
-            kept.append(sentence)
-            total += len(sentence) + (1 if len(kept) > 1 else 0)
+            if not kept:
+                # If even the very first sentence exceeds max_chars, truncate cleanly.
+                sentence = sentence[:max_chars].rstrip()
+                if sentence:
+                    kept.append(sentence)
             break
         kept.append(sentence)
         total = prospective