docs(ai): update quickstart and contributing (agent)

Co-authored-by: PR0M3TH3AN <[email protected]>

docs/README.md

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+# Documentation Index
+
+Welcome to the bitvid documentation. This directory contains detailed architectural guides, API references, and system overviews.
+
+## Core Systems
+
+- **[Application Coordinators](./app-coordinators.md)**: Overview of the coordinator pattern used to manage app-wide state and services.
+- **[Authentication Architecture](./auth-architecture.md)**: How session management, login flows, and signer integration work.
+- **[Feed Engine](./feed-engine.md)**: The pipeline for fetching, filtering, scoring, and sorting video feeds.
+- **[Playback & Fallback](./playback-fallback.md)**: The URL-first playback strategy with WebTorrent fallback orchestration.
+- **[Watch History System](./watch-history-system.md)**: Encrypted watch history synchronization and storage.
+
+## Nostr Protocol
+
+- **[Nostr Event Schemas](./nostr-event-schemas.md)**: The definitive catalogue of all Nostr event kinds and data structures used by bitvid.
+- **[DM Privacy Model](./dm-privacy-model.md)**: How Direct Messages are handled, including NIP-17 relays and privacy controls.
+- **[NIP-46 Client Overview](./nip46-client-overview.md)**: Details on the NIP-46 remote signer implementation.
+
+## Moderation & Safety
+
+- **[Moderation Service](./moderation-service-overview.md)**: How content moderation, reporting, and admin lists function.
+- **[Logging Strategy](./logging.md)**: Guidelines for using `devLogger` vs `userLogger` and production logging policies.
+
+## Design & UI
+
+- **[Design System](./design-system.md)**: Guide to the token-based design system and CSS architecture.
+- **[Menus & Popovers](./menus.md)**: Documentation for the menu and popover system.
+
+## Operations
+
+- **[Instance Configuration](./instance-config.md)**: Guide to configuring a bitvid instance.
+- **[Deployment Notes](./deployment-notes.md)**: Notes and checklists for deploying bitvid.
+- **[Manual QA Checklist](./qa.md)**: The standard manual QA script for releases.
+
+For more details on contributing, please see [CONTRIBUTING.md](../CONTRIBUTING.md).