docs: add workflow section to AGENTS.md

Add branch management guidance - ask user before starting new
tasks whether to switch to main and rebase or work from current branch.

Author: GuyKh

AGENTS.md

@@ -67,6 +67,21 @@ logger:
 - Terminal where `./script/develop` runs
 - `config/home-assistant.log`
 
+## Workflow
+
+### Starting New Work
+
+**When starting a new task, always ask the user first:**
+- Should I switch to `main` branch and rebase?
+- Or should I work from the current branch?
+
+Then checkout a new feature branch before beginning work. Never work directly on `main` or stale branches.
+
+### Branch Naming Convention
+- Features: `feature/description`
+- Bug fixes: `fix/description`
+- Documentation: `docs/description`
+
 ## Code Style
 
 **Python:**