docs: add CI badges, requirements, interactive installer

- CI and Integration status badges in README header
- Requirements table (OS, RAM, CPU, disk)
- Linux platform note (tested on Ubuntu 24.04 + Arch Linux)
- install.sh: interactive one-command installer
  - Detects distro (Ubuntu/Arch), installs prereqs
  - Clones repo or uses existing clone
  - Runs setup.sh automatically
  - Walks through secrets with validation + links
  - Writes .env with correct permissions
  - Offers to launch agent in tmux
- README Quick Start updated to feature installer
- Tested on fresh Ubuntu 24.04 and Arch Linux droplets

Author: benvinegar

AGENTS.md

@@ -76,6 +76,9 @@ Agent runtime layout:
 ## Development Workflow
 
 ```bash
+# First-time install (interactive — handles everything)
+sudo ~/hornet/install.sh
+
 # Edit source files directly in ~/hornet/
 
 # Deploy to agent runtime

README.md

@@ -33,14 +33,21 @@ Agents work on real files in real repos — no sandbox friction. They make real
 ## Quick Start
 
 ```bash
-# Clone (as admin — source lives in admin's home, not agent's)
-git clone <your-hornet-repo-url> ~/hornet
+git clone https://github.com/modem-dev/hornet.git ~/hornet
+sudo ~/hornet/install.sh
+```
+
+The installer detects your distro, installs dependencies, creates the agent user, sets up the firewall, and walks you through API keys interactively. Takes ~2 minutes.
+
+<details>
+<summary>Manual setup (without installer)</summary>
 
+```bash
 # Setup (creates user, firewall, permissions — run as root)
 sudo bash ~/hornet/setup.sh <admin_username>
 
 # Add secrets
-sudo su - hornet_agent -c 'vim ~/.config/.env'
+sudo -u hornet_agent vim ~/.config/.env
 
 # Deploy source → agent runtime
 ~/hornet/bin/deploy.sh
@@ -49,6 +56,9 @@ sudo su - hornet_agent -c 'vim ~/.config/.env'
 sudo -u hornet_agent ~/runtime/start.sh
 ```
 
+See [CONFIGURATION.md](CONFIGURATION.md) for the full list of secrets and how to obtain them.
+</details>
+
 ## Configuration
 
 Secrets and configuration live in `~hornet_agent/.config/.env` (not in repo, 600 perms).