## Problem
CI workflow started timing out on October 14, 2025 after commit
`d750df7fff` removed the trailing newline from `.env.example`.
## Root Cause
When `.env.example` lacks a trailing newline:
```bash
# Last line without newline
# CLICKHOUSE_URL=...twenty
```
And CI runs:
```bash
echo "NODE_PORT=3002" >> .env
```
Result:
```bash
# CLICKHOUSE_URL=...twentyNODE_PORT=3002 ← Commented out!
```
Server starts on default port 3000 instead of 3002, health check fails.
## Fix
1. **Restore trailing newline** to `.env.example`
2. **Make all CI `.env` operations robust** by adding `echo "" >> .env`
before appending
3. **Simplified `set_env_var`** function to always add newline first
Now works regardless of whether template files have trailing newlines.
## Files Changed
- 6 CI workflow files
- 1 .env.example file
