docs: strip spec-provided descriptions and rewrite 9 short/long descriptions

docs/open-source/features/multimodal-support.mdx

@@ -1,7 +1,7 @@
 ---
 title: "Open Source Multimodal Support"
 sidebarTitle: "Multimodal Support"
-description: Capture and recall memories from both text and images.
+description: "Add images alongside text with Mem0 open source: extract facts from screenshots, receipts, or photos via URL or base64 in Python and JavaScript SDKs."
 icon: "image"
 ---
 

docs/open-source/features/overview.mdx

@@ -1,7 +1,7 @@
 ---
 title: "Open Source Features Overview"
 sidebarTitle: "Overview"
-description: "Self-hosting features that extend Mem0 beyond basic memory storage"
+description: "Explore Mem0 open source features: async memory operations, multimodal inputs, metadata filtering, reranker-based search, and custom instructions."
 icon: "list"
 ---
 

docs/open-source/overview.mdx

@@ -1,7 +1,7 @@
 ---
 title: "Open Source Overview"
 sidebarTitle: "Overview"
-description: "Self-host Mem0 with full control over your infrastructure and data"
+description: "Run Mem0 open source as a Python or Node.js library, or as a self-hosted Docker server with dashboard, API keys, and request audit logs."
 icon: "house"
 ---