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# Part X - Feature Deep Dive
+- [Feature System & Dependency Tree](./features.md)
- [Chapter 11: Feature Reference](./11-features/README.md)
- [Feature Editions](./11-features/editions.md)
- [Core Features](./11-features/core-features.md)
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+
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+# Feature System
+
+**Version:** 6.2.0
+
+General Bots uses Cargo's feature flags to create modular, size-optimized builds. This allows you to include only the functionality you need.
+
+---
+
+## Feature Dependency Tree
+
+
+
+---
+
+## Quick Start
+
+### Building with Specific Features
+
+```bash
+# Minimal build (chat only)
+cargo build --features "chat" --no-default-features
+
+# Chat + Cloud Storage
+cargo build --features "chat,drive" --no-default-features
+
+# Spreadsheet + Cloud Storage
+cargo build --features "sheet,drive" --no-default-features
+
+# Chat with Local LLM
+cargo build --features "chat,llm" --no-default-features
+
+# Full productivity suite
+cargo build --features "full"
+```
+
+---
+
+## Feature Categories
+
+### 🗣️ Communication Apps
+
+| Feature | Dependencies | Description |
+|---------|--------------|-------------|
+| `chat` | None | Basic chat functionality |
+| `people` | None | Contact management |
+| `mail` | lettre, mailparse, imap, native-tls | Email integration |
+| `meet` | livekit | Video conferencing |
+| `whatsapp` | None | WhatsApp integration |
+| `telegram` | None | Telegram integration |
+| `instagram` | None | Instagram integration |
+| `msteams` | None | Microsoft Teams integration |
+| `social` | None | Social media features |
+
+### 📋 Productivity Apps
+
+| Feature | Dependencies | Description |
+|---------|--------------|-------------|
+| `calendar` | None | Calendar functionality |
+| `tasks` | cron, automation | Task management with scheduling |
+| `project` | quick-xml | Project management (MS Project) |
+| `goals` | None | Goals tracking |
+| `workspace` | None | Single workspace |
+| `tickets` | None | Ticket system |
+| `billing` | None | Billing system |
+
+### 📄 Document Apps
+
+| Feature | Dependencies | Description |
+|---------|--------------|-------------|
+| `docs` | docx-rs, ooxmlsdk | Word document processing |
+| `sheet` | calamine, spreadsheet-ods | Spreadsheet processing |
+| `slides` | ooxmlsdk | Presentation processing |
+| `paper` | docs, pdf-extract | PDF processing |
+| `drive` | aws-config, aws-sdk-s3, aws-smithy-async, pdf-extract | Cloud storage (S3) |
+
+### 🎥 Media Apps
+
+| Feature | Dependencies | Description |
+|---------|--------------|-------------|
+| `video` | None | Video features |
+| `player` | None | Media player |
+| `canvas` | None | Drawing/canvas |
+
+### 🧠 Learning & Research
+
+| Feature | Dependencies | Description |
+|---------|--------------|-------------|
+| `learn` | None | Learning features |
+| `research` | llm, vectordb | Research with AI |
+| `sources` | None | Data sources |
+
+### 📊 Analytics
+
+| Feature | Dependencies | Description |
+|---------|--------------|-------------|
+| `analytics` | None | Analytics features |
+| `dashboards` | None | Dashboard UI |
+| `monitoring` | sysinfo | System monitoring |
+
+### 🔧 Development Tools
+
+| Feature | Dependencies | Description |
+|---------|--------------|-------------|
+| `designer` | None | UI designer |
+| `editor` | None | Code/text editor |
+| `automation` | rhai, cron | Scripting automation |
+
+### ⚙️ Core Technologies
+
+| Feature | Dependencies | Description |
+|---------|--------------|-------------|
+| `llm` | None | LLM integration flag |
+| `vectordb` | qdrant-client | Vector database |
+| `cache` | redis | Redis caching |
+| `compliance` | csv | Compliance reporting |
+| `console` | crossterm, ratatui, monitoring | Terminal UI |
+| `jemalloc` | tikv-jemallocator, tikv-jemalloc-ctl | Memory allocator |
+| `progress-bars` | indicatif | Progress indicators |
+
+---
+
+## Pre-Defined Bundles
+
+### `minimal`
+```toml
+minimal = ["chat"]
+```
+Smallest possible build. Just chat functionality.
+
+### `lightweight`
+```toml
+lightweight = ["chat", "drive", "tasks", "people"]
+```
+Small but useful for basic operations.
+
+### `default`
+```toml
+default = ["chat", "drive", "tasks", "automation", "cache", "directory"]
+```
+Balanced default configuration.
+
+### `full`
+```toml
+full = [
+ "chat", "people", "mail",
+ "tasks", "calendar",
+ "drive", "docs",
+ "llm", "cache", "compliance"
+]
+```
+Everything useful for a complete deployment.
+
+---
+
+## Common Scenarios
+
+### 📱 Chat + Drive (Minimum Cloud)
+
+```bash
+cargo build --features "chat,drive" --no-default-features
+```
+
+**Use case:** Basic chat with file storage capabilities.
+
+### 📊 Sheets + Drive
+
+```bash
+cargo build --features "sheet,drive" --no-default-features
+```
+
+**Use case:** Spreadsheet processing with cloud storage.
+
+> ⚠️ **Note:** `sheet` does NOT require `drive` for local file processing. Add `drive` only if you need cloud storage.
+
+### 🤖 Chat + Local LLM
+
+```bash
+cargo build --features "chat,llm" --no-default-features
+```
+
+**Use case:** Chat with local LLM integration (limited resources).
+
+### 🏢 Office Suite
+
+```bash
+cargo build --features "docs,sheet,slides,drive" --no-default-features
+```
+
+**Use case:** Full document processing suite.
+
+### 📧 Email-Focused
+
+```bash
+cargo build --features "chat,mail,cache" --no-default-features
+```
+
+**Use case:** Chat with email integration.
+
+---
+
+## Feature Validation
+
+Some features have implicit dependencies:
+
+| If you enable... | You automatically get... |
+|------------------|--------------------------|
+| `tasks` | `automation` |
+| `paper` | `docs` |
+| `research` | `llm`, `vectordb` |
+| `console` | `monitoring` |
+| `communications` | All communication features + `cache` |
+| `productivity` | All productivity features + `cache` |
+| `documents` | All document features |
+
+---
+
+## Size Comparison
+
+| Build Configuration | Approximate Size |
+|--------------------|------------------|
+| `minimal` | ~15 MB |
+| `lightweight` | ~25 MB |
+| `default` | ~35 MB |
+| `full` | ~60 MB |
+
+*Sizes are approximate and vary based on platform and optimization level.*