Multiuser system initiated with log recording

INTRANET_DEPLOYMENT.md

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+# mxPIC EDA Intranet Deployment
+
+## Start on the office LAN
+
+1. On the host computer, open PowerShell in this repository.
+2. Set a persistent secret key:
+
+```powershell
+$env:MXPIC_SECRET_KEY = "replace-with-a-long-random-secret"
+```
+
+3. Start the server:
+
+```powershell
+.\run_intranet_server.ps1
+```
+
+The app listens on `0.0.0.0:3000`, so other users can open:
+
+```text
+http://<host-computer-ip>:3000
+```
+
+Find the host IP with:
+
+```powershell
+ipconfig
+```
+
+Use the IPv4 address on the company LAN adapter.
+
+## Windows firewall
+
+If coworkers cannot connect, allow inbound TCP port `3000` on the host computer.
+
+## Accounts
+
+Default local accounts:
+
+```text
+admin / 123456
+engineer / 123456
+```
+
+Change these passwords from the dashboard profile panel before regular use.
+
+Each user stores projects under:
+
+```text
+database/<username>/layout
+```
+
+## Useful environment variables
+
+```text
+MXPIC_HOST=0.0.0.0
+MXPIC_PORT=3000
+MXPIC_DEBUG=0
+MXPIC_SECRET_KEY=<long random string>
+MXPIC_COOKIE_SECURE=0
+```
+
+Set `MXPIC_COOKIE_SECURE=1` only when serving through HTTPS.