- Add image intent detection (draw/illustrate/visualize/create an image)
via `detectImageRequest()` in agent.ts; exports used by jobs and sessions
- Add `executeImageWork()` to AgentService: calls Gemini generateImage with
graceful fallback stub PNG when Gemini credentials are absent
- Add `job_media` table (migration 0010) for base64 image storage with 7-day TTL;
entity_id is polymorphic for both jobs and session requests
- Add `media_type TEXT` column to jobs table (flagged during eval phase)
- Add `calculateImageFeeSats()` / `calculateImageFeeUsd()` to PricingService;
uses IMAGE_GENERATION_FLAT_RATE_USD env var (default $0.04)
- Jobs route: detect image jobs in eval phase, route to Gemini in execution,
store image in job_media; expose GET /api/jobs/:id/media endpoint
- Sessions route: detect image requests, call executeImageWork, store in
job_media, return mediaUrl and mediaType in response
- Estimate route: return image pricing and mediaType:'image' for image requests
- Event bus: add optional mediaUrl/mediaType to job:completed event
- Frontend session.js: render generated images inline with download button
Fixes#19
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
