Interrupting agent mid-response switches context to 2 and freezes further prompts

When I interrupt an agent in the middle of an answer, it will switch back the context to 2 and immediately stop responding to any prompts.

Note: I also had to create a new session in order to be able to provide this feedback, so I can't provide details of my original session where this occurred.

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### Metadata

| Field | Value |
|-------|-------|
| CLI Version | 0.9.1 |
| Platform | darwin |
| Architecture | arm64 |
| OS Release | 25.5.0 |
| Category | bug |