Summary: Embedder adds Y Combinator backing

Why It Matters: This shows Embedder has new support.

What Changed:

• Added "Y Combinator" to "Backed by"
• Changed "Claude Code for Firmware" to "Coding Agent for Firmware Devs"
• Removed "Open Beta" section
• Removed "Automate your workflow" section
• Added "Used by engineers at" section with company names (Meta, Tesla, Google, NVIDIA, OpenAI)
• Changed "Platform Independent" to "Platform Agnostic" and updated its description
• Changed "Minimize Hallucinations" to "Zero Hallucinations" and updated its description
• Updated "Hardware Interaction Layer" description
• Removed "Strict Access Control"
• Added "Local Indexing"