create AI_template

DOCS.md

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+# Project Documentation Index: Starter Template
+
+Technical index for developers and AI agents. Use this as the entry point to all `docs/` files.
+
+---
+
+## Documentation Languages
+- Technical docs: English (`docs/` and subfolders).
+- Repository summary: `README.md` (Russian).  
+  New documents should be added in English unless noted.
+
+---
+
+## Documentation Structure (root: `docs/`)
+
+### 1) General Project Docs
+- `docs/project-overview.md` — goals, target users, value proposition, key flows (data ingestion, processing, human approvals, reporting, billing), non-functional requirements.
+- `docs/phases-plan.md` — Phase 0–4 plan with tasks across product, frontend, backend, infra, data/LLM.
+- `docs/content-structure.md` — high-level UI/content structure and page sections.
+
+### 2) Frontend (`/docs/frontend`)
+- `docs/frontend/overview.md` — frontend scope, key user journeys (onboarding, data connection, approvals, reports).
+- `docs/frontend/architecture.md` — recommended stack and patterns (feature-first structure, data fetching, styling).
+- `docs/frontend/FRONTEND_ARCHITECTURE_PLAN.md` — planning notes for frontend architecture decisions.
+- `docs/frontend/ui-ux-guidelines.md` — UX/UI guidance for data review and approval flows.
+- `docs/frontend/seo-performance.md` — performance and SEO recommendations.
+
+### 3) Backend (`/docs/backend`)
+- `docs/backend/overview.md` — backend scope: ingestion, processing (rules + embeddings + LLM), approvals, reporting, billing.
+- `docs/backend/architecture.md` — stack and module boundaries (provider-agnostic recommendations).
+- `docs/backend/api-design.md` — API resources and conventions (entities, rules, approvals, reports, billing, events).
+- `docs/backend/security.md` — authN/Z, secret handling, webhook verification, audit/event logging.
+- `docs/backend/payment-flow.md` — payment integration (provider-agnostic template; single source of truth for payment flows and webhooks).
+
+---
+
+## How to Use This Index
+- **New to the project:** read `project-overview.md` and `phases-plan.md` first.
+- **Designing features:** use frontend/backend architecture docs plus API/security/payment flow specs.
+- **Expanding docs:** add new English `*.md` files under `docs/` and update this index with links.
+
+**Last Updated:** Phase 0 (Planning)