Open Agent now acts as a pure pass-through frontend to OpenCode.
We no longer impose any timeouts on the SSE event stream.
Changes:
- Remove SSE_INACTIVITY_TIMEOUT (180s) and TOOL_STATUS_CHECK_INTERVAL (30s)
- Remove tool tracking for timeout extension
- Simplify SSE loop to blocking read without timeout
- Document timeout philosophy in module docs and CLAUDE.md
This ensures long-running tools complete naturally and avoids
timeout mismatches between Open Agent and OpenCode. Users can
still abort missions manually via the dashboard.
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