Fix DE tool "forgetting" a just-fetched sequence — it needed protein, got DNA

Turing can now fetch a sequence by gene name or accession — new fetch_sequence tool

Turing: fix sequence/markdown formatting, add interactive workflow preview

Turing: collapse long sequences in chat, add context-window meter

Turing: ground company-identity facts to stop confabulated founder names

Turing: strengthen system prompt against hallucination

Turing: wire ESM-2, fix auth header, friendly credits message, tool cards

Turing: go live + wire tool-calling

SECURITY: fix live API key leak in agent error responses

Add native Python Turing agent orchestrator (OpenRouter + Gemini 3.5 Flash)