v0.4.0

• 98ab06d fix(tui): call plugin RPC and OAuth at the plugin's location
• 95ff8b1 fix(tui): register slash commands from the app slot
• 4b15f00 fix(plugin): resolve as a plugin directory configured by path
• 439019a fix(accounts): follow the credential activated in OpenCode
• 51e2090 feat(imagine): add image generation tool and commands
• 7489cdd fix(payload): keep only reasoning_text parts in replayed reasoning
• 4372ed9 feat(models): add grok-4.7 models, pricing and xhigh variants