Ship chatbot intelligence upgrades and author-friendly Readers tab

Fix analytics accuracy, tenant isolation, and event-loop blocking.

Implement Enterprise Worth Roadmap (R-139–R-173).

Simplify upsell stack and align tests with current prompt wiring.

Raise upsell skill: analytical buyer mode, answer-first, structured closing.

Fix catalog short-circuit replaying book intro on skepticism follow-ups.

Add objection intelligence: typed concern counters, personal anchors, stage-aware persuasion.

Wire upsell strategy into LLM prompts for humanistic persuasion.

feat: Phases 2B + 3B — semantic Q&A and vector store fixes

feat: Phases 1-5 production improvements + 8 bug fixes

Refactor: complete 10/10 modularity — superadmin/routers/, core/startup/, pipeline/generation.py, slim main.py

Refactor: 10/10 modularity — pipeline/ package, admin/routers/ split, guards single source of truth