[BUG] Agent label renders incorrectly with OMO: 'Deep agent' becomes 'Deep ent' #22131

Description

When OMO / oh-my-openagent is installed, the agent badge text in the OpenCode TUI can render incorrectly.

A concrete example on my machine:

• Expected: Deep agent
• Actual: Deep ent

This is not just normal truncation of a long label. The text appears visually corrupted, as if width calculation / clipping is being applied to a polluted display string.

What I verified

I checked the local configuration and ruled out a user config typo.

• My source config is clean
• The original oh-my-openagent.json contains a normal display name such as Hephaestus - Deep Agent
• But the resolved runtime config contains zero-width-space-prefixed names

Example from resolved config:

"name": "\u200b\u200bHephaestus - Deep Agent"

I also verified that the source config itself does not contain those zero-width characters.

Why this seems to be an OpenCode-side bug trigger

There are already two nearby classes of issues:

• OpenCode truncation/layout issues for long agent names:
  • [FEATURE]:Bottom toolbar layout is too compact, causing agent names to be truncated when oh-my-opencode is installed, even though there is still enough unused space available #17755
  • [BUG] (app): Cannot see long agent name in agent selector #13529
• OMO / oh-my-openagent zero-width-space leakage into display names:
  • Agent display names polluted with zero-width space characters code-yeongyu/oh-my-openagent#3208
  • [Bug]: Atlas (Plan Executor) displays error in TUI code-yeongyu/oh-my-openagent#3150

The current bug seems to happen when those two conditions meet:

1. agent names reaching OpenCode are polluted with U+200B prefixes
2. TUI width/truncation logic then mismeasures or clips the rendered label
3. the badge renders as broken text such as Deep ent

Expected behavior

Agent labels should render cleanly and predictably in the TUI, even if upstream plugin ecosystems accidentally include zero-width characters.

At minimum, OpenCode should sanitize invisible formatting characters before width measurement / truncation / badge rendering.

Actual behavior

The badge text becomes visually incorrect instead of simply clipping cleanly.

Environment

• OpenCode version: 1.4.3
• macOS Apple Silicon
• OMO / oh-my-openagent installed

Screenshot

I can provide the screenshot I captured locally if helpful; the rendered badge shows Deep ent where Deep agent is expected.