Add WhatsApp AI Agent with Tool Calling

[adityakaklij]

Summary

Adds WhatsApp AI agent support with LLM conversations and tool calling, along with DeepSeek provider support and minor Supabase and token optimization fixes.

What changed

• Fixed minor issues with Supabase table creation
• Added DeepSeek as an LLM provider
• Added WhatsApp AI agent for LLM-based conversations
• Added tool calling support for the AI agent
• Improved AI agent communication flow
• Optimized token usage

Test plan

• npm run typecheck clean.
• npm run lint — no new errors beyond the pre-existing backlog.
• npm run build succeeds.
• Tested WhatsApp AI conversations manually.
• Tested tool calling with the AI agent.

Related

Part of ongoing AI agent improvements.

[ArnasDon]

Thanks for sharing this. Per CONTRIBUTING.md this repository is a template: forks are expected to diverge, and upstream only takes small, scoped fixes (security, correctness, docs) opened against current main. This PR is a whole-fork snapshot (rebrand/stack/deploy changes, colliding migration numbers, and it now conflicts with main), so I am closing it rather than reviewing file by file. If there is a specific bug fix in here that applies to the upstream template, please open it as its own small PR — those land quickly.

Upstream already ships an AI reply layer under src/lib/ai; a second agent implementation plus a DeepSeek provider is a feature for a fork. If the Supabase table fixes in the first commit are real upstream bugs, please open those separately with the failing case.