Add Ollama configuration to first-run setup #100

Summary

Adds Ollama configuration to OpenDots' first-run setup, allowing users to configure a local model without manually editing the environment configuration.

Changes

• Adds npm run setup support for Ollama.
• Detects whether Ollama is available locally.
• Allows selecting an available Ollama model.
• Writes the selected Ollama configuration to .env.
• Preserves unrelated existing .env configuration.
• Adds documentation for Ollama setup.

Screenshots

Ollama setup

Validation

• Focused setup tests pass.
• Formatting checks pass.
• JavaScript syntax checks pass.
• Full test suite: 254 tests passed.
• 3 unrelated timeouts remain in telemetry.test.ts.

Important note

Ollama is used for local model inference only. CopilotKit Intelligence is still required for conversation threads and message storage.