Update requirements.txt

requirements.txt

@@ -1,17 +1,22 @@
 # ── Web requests ──────────────────────────────────────────
-requests==2.31.0
-urllib3==1.26.18
-charset-normalizer==3.3.2
+requests>=2.31.0
+# urllib3 intentionally unpinned — gradio needs ~=2.0, requests is flexible
+charset-normalizer>=3.3.2
 
 # ── Environment / config ───────────────────────────────────
-python-dotenv==1.0.0
+python-dotenv>=1.0.0
 
 # ── NLP / Similarity ──────────────────────────────────────
-jellyfish==1.0.3
-sentence-transformers==2.7.0
-scikit-learn==1.4.2
-torch==2.2.2
-transformers==4.40.2
+jellyfish>=1.0.3
+sentence-transformers>=2.7.0
+scikit-learn>=1.4.2
+torch>=2.2.2
+transformers>=4.40.2
+
+# ── FastAPI (REST /search endpoint) ───────────────────────
+fastapi>=0.111.0
+uvicorn[standard]>=0.29.0
+pydantic>=2.7.1
 
 # ── Gradio UI (HF Spaces) ─────────────────────────────────
-gradio==4.31.5
+gradio>=4.31.5