Initial Central AI Hub docs: brief, rules, README, outline context, architecture

docs/outline/00-index.md

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+# Central AI Hub — AI Document Index
+
+> **Target**: AI Agents
+> **Writing Style**: ASD-STE100 Simplified Technical English (`ste-writing`).
+
+## Document Catalog (Inject Specific Document)
+
+Read this index to inject the exact file you need. Do not search all files.
+
+| Document Title | Path | Scope / Description |
+| :--- | :--- | :--- |
+| **System Overview** | `docs/outline/01-system-overview.md` | Explains the Hub purpose, its five steps, and the destinations. |
+| **Configuration & Env** | `docs/outline/02-config-and-env.md` | Lists services, ports, env vars, and secret paths. |
+| **Code Structure Map** | `docs/outline/03-code-map.md` | Shows the planned folder layout and entry points. |
+| **AI Agent Runbook** | `docs/outline/04-agent-runbook.md` | Gives steps to build, test, and restart Hub work. |
+| **Design Brief** | `hub_brief.md` | The agreed design. This file is the source of truth. |
+| **Project Rules** | `AGENTS.md` | Mission, rules, build order, and project relations. |
+
+---
+
+## System Summary
+
+The Hub is one service. Every way in reaches every ability through it. The Hub
+does five steps: hear, understand, check, route, and answer. The Hub does not
+hold a personality or a memory. The Hub does not do the destination work.
+
+## Core Configuration
+
+- **Env File**: `~/.config/environment.d/10-secrets.conf`
+- **Config Directory**: `docs/`
+- **Active Ports**: Hub port not allocated yet.
+
+## Agent Restart Steps
+
+1. Read the Document Catalog above. Inject only required files.
+2. Read `hub_brief.md`.
+3. Check git status: `git status`.
+4. Check recent commits: `git log -n 5 --oneline`.