Replace hardcoded platform dispatch with get_client(campaign["type"]) so
any future campaign type (blog_post, email, etc.) routes automatically
through the strategy registry. Adds dupe-guard opt-out per strategy,
sub_row pre-fetch for extra metadata, and 5 new TDD tests (14 total).
FastAPI backend (SQLite + APScheduler), Vue 3 frontend, MCP server for
Claude integration, and Docker Compose stack. Includes campaign data model
(campaigns → variants → subs), post history, sub rules, and Playwright-based
Reddit posting layer migrated from claude-bridge/reddit-poster.
Also seeds legacy campaigns (6) and sub rules (14) from reddit-poster history.
Closes#1 (scaffold), resolves migration from claude-bridge.
