Add comprehensive deployment documentation

DEPLOY_SISSY.md

+# Deploying Browser Control to sissy (Laptop)
+
+## Architecture Recap
+
+```
+sissy (laptop) ←←← Node Agent ←←→ zeiss (workstation) ←→ Hermes
+      ^                              ^
+      └── Browser control runs HERE ─┘
+```
+
+The node agent runs **on sissy**, controlling the local browser.
+Hermes talks to the **gateway on zeiss**, which routes to sissy.
+
+---
+
+## What's Already Done
+
+✅ Code written: `browser_controller.py`, node agent integration, gateway HTTP endpoint
+✅ Playwright + Chromium tested on lisa (this VPS)
+✅ Gateway updated with sissy token and browser endpoint
+✅ Install script prepared: `install-on-sissy.sh`
+✅ Documentation: `BROWSER_CONTROL.md`, `SKILL.md`
+
+---
+
+## Step-by-Step Deployment
+
+### On lisa (this VPS) — Package & Transfer
+
+**1. Archive the node agent code:**
+
+```bash
+cd ~/hermes-node-protocol
+tar -czf node-agent-package.tar.gz node-agent/ install-on-sissy.sh
+```
+
+**2. Transfer to sissy:**
+
+Since you're on sissy writing to me, you already have access. Just copy the package:
+
+From lisa, scp to sissy:
+```bash
+# Assuming you can SSH from lisa to sissy
+scp node-agent-package.tar.gz nextime@sissy:/tmp/
+```
+
+Or simpler: just download it from lisa via your local browser on sissy if you have a web server running.
+
+**Actually — since you're *on* sissy now, do this instead:**
+
+On sissy, clone or copy from lisa:
+```bash
+# If hermes-node-protocol is already on sissy, skip this
+# If not, copy from lisa (assuming SSH access from sissy to lisa):
+scp lisa:~/hermes-node-protocol/node-agent ~/hermes-node-protocol/
+scp lisa:~/hermes-node-protocol/install-on-sissy.sh ~/hermes-node-protocol/
+```
+
+**Where is the code on lisa?**
+It's at: `/home/lisa/hermes-node-protocol/`
+
+Since you're currently on **sissy**, and you have access to your files, you need to get this code onto sissy. How do you want to transfer it?
+
+Options:
+1. **Git repo** — if the code is in a git repo, just `git clone` on sissy
+2. **SCP/rsync** — from sissy to lisa (reverse direction since lisa is the source)
+3. **USB/external drive** — copy manually
+4. **Shared filesystem** — NFS/SMB mount
+
+Which do you prefer? Or is the code already on sissy?
+
+---
+
+### On sissy — Installation
+
+Once the code is on sissy at `~/hermes-node-protocol/`:
+
+```bash
+cd ~/hermes-node-protocol
+sudo ./install-on-sissy.sh
+```
+
+This will:
+- Create `/etc/hermes-node/config.json`
+- Setup Python venv + Playwright
+- Install SysV init script
+- Start the node agent
+
+### On zeiss (gateway) — Verify
+
+Node should auto-register with gateway on zeiss:
+
+```bash
+# On zeiss, check:
+curl http://localhost:8766/nodes/sissy/status
+
+# Should return:
+# {"name":"sissy","status":"connected",...}
+```
+
+### From Hermes — Control sissy's browser
+
+```python
+# Example using curl
+curl -X POST http://zeiss:8766/nodes/sissy/browser \
+  -H "Content-Type: application/json" \
+  -d '{
+    "action": "launch",
+    "params": {"config": {"headless": false}}
+  }'
+```
+
+---
+
+## Files to Transfer from lisa to sissy
+
+```
+hermes-node-protocol/
+├── node-agent/
+│   ├── hermes_node_agent.py       (main agent)
+│   ├── browser_controller.py      (new)
+│   ├── requirements.txt           (new)
+│   ├── test_browser.py            (test script)
+│   └── venv/                      (will be recreated on sissy)
+├── gateway/
+│   └── hermes_node_gateway.py      (already on zeiss, not needed on sissy)
+├── install-on-sissy.sh             (new)
+├── README.md
+├── PROTOCOL.md
+├── PROJECT_SUMMARY.md
+├── DEPLOYMENT.md
+└── BROWSER_CONTROL.md             (new)
+```
+
+Only `node-agent/` directory and `install-on-sissy.sh` are needed on sissy.
+
+---
+
+## Quick Transfer Command
+
+From **sissy**, run:
+
+```bash
+# Copy from lisa (source) to sissy (current machine)
+scp -r lisa:~/hermes-node-protocol/node-agent ~/hermes-node-protocol/
+scp lisa:~/hermes-node-protocol/install-on-sissy.sh ~/hermes-node-protocol/
+```
+
+If SSH from sissy to lisa isn't set up, we'll need another method.
+
+**Question:** Can sissy SSH into lisa? Or do you want a different transfer method?