Gemini CLI 0.63 fixes Plan Mode hang in non-interactive runs
Gemini CLI 0.63 fixes bug #28913 where the agent stalled in Plan Mode during non-interactive runs, emitting text without tool calls that was treated as completion. The prompt now branches on TTY presence: 29,139 characters without a terminal versus 30,370 inside one.
- Fix #29539 enables autonomous plan execution without a TTY
- Prompt size differs: 29,139 chars without TTY, 30,370 with TTY
- Interactive prompt requires waiting for user confirmation
- Interactive tool table adds activate_skill, ask_user and web_fetch
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