Crowdmind 0.2.3

Changes

• Added multi-attachment stimuli for tests and funnel stages.
• Supports multiple image uploads plus PDFs/files stored locally as data URI attachments.
• Sends multiple images to OpenAI, Anthropic, Gemini, and OpenRouter where supported.
• Sends PDFs/files to OpenAI using file data payloads; other providers now return a clear unsupported-file message.
• Shows attached images and files in test/funnel result screens.
• Added smoke coverage for image + PDF attachment flow.

Verification

• npm run typecheck
• npm run smoke-test
• npm run dist:win