tmux + Neovim + AI: My tdev Workflow for AI-Powered Development Sessions

I was pair programming over Zoom, sharing my terminal, and my partner asked me to scroll back to see a previous error. I couldn't. Terminal history doesn't scroll in screen share. That small friction made me finally learn tmux session management properly. A few days later I watched a video by DDH about his tmux workflow with Opencode and Claude Code. Editor and AI assistant side by side, both aware of each other's state. I wanted that same flow, but with Neovim and Opencode instead. What I ended up with is a developer productivity workflow I call tdev . It's a single command that spins up a complete development environment with Neovim and Opencode side by side, connected via a local port for context sharing. Honestly, the whole point is keeping editor and AI assistant in sync: when I ask Opencode to "fix this function," Neovim has already told it which file and line I'm looking at. No more juggling terminals. No more losing state when I disconnect. What tdev Actually Does Running tdev