Restore previous bible/ content as bible-local/

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

bible-local/BIBLE.md

@@ -0,0 +1,51 @@
+# PriceForge Bible
+
+The main architectural reference for developers and AI agents. Source of truth for the project.
+
+---
+
+## What is PriceForge
+
+PriceForge is a price and pricelist manager built on top of MariaDB.
+
+- **Runtime**: MariaDB-only, fail-fast (if DB is unavailable at startup — server exits)
+- **Main UI**: `/admin/pricing`
+- **Default port**: `8084`
+- **Go module**: `git.mchus.pro/mchus/priceforge`
+
+---
+
+## Table of Contents
+
+| File | Description |
+|------|-------------|
+| [architecture.md](architecture.md) | Stack, project structure, modules, routes |
+| [pricelist.md](pricelist.md) | Pricelist types (Estimate / Warehouse / Competitor) and creation rules |
+| [vendor-mapping.md](vendor-mapping.md) | partnumber → LOT mapping, bundles, ignore logic |
+| [background-tasks.md](background-tasks.md) | Task Manager: Submit, polling, task types |
+| [data-rules.md](data-rules.md) | Categories, data integrity rules |
+| [patterns.md](patterns.md) | Code patterns: CSV export, streaming, virtual fields |
+| [api.md](api.md) | All API endpoints |
+| [operations.md](operations.md) | Config, commands, build, release |
+| [history.md](history.md) | Architectural decisions and change log |
+
+---
+
+## Documentation Standards
+
+- **Language**: All documentation in `bible/` is written in **English**.
+- **Architectural decisions**: Every architectural decision MUST be recorded in [history.md](history.md) with date, rationale, constraints, and affected files. No exceptions.
+- **Before user-requested commits**: If a user asks to create a commit, update relevant `bible/` docs in the same change set before committing.
+
+---
+
+## Hard Rules (for AI agents)
+
+> These rules MUST NOT be violated when writing code.
+
+1. **Warehouse pricelist** — only mapped partnumbers from `lot_partnumbers`. Unmapped partnumbers are excluded entirely.
+2. **Categories** — always from `lot.lot_category`. Never derive from LOT name.
+3. **Background tasks** — Task Manager only (`taskManager.Submit()`). Never use SSE.
+4. **Vendor mapping** — 1:1 key `(vendor, partnumber)`. Composite mappings only via bundles.
+5. **Home page** — redirect to `/admin/pricing`. Configurator, projects, export must not appear in the UI.
+6. **Document decisions** — every architectural decision must be added to `bible/history.md`.