- Added transcriptMessageComponents to every InteractiveMode ctx test literal; #6033's reuse cache made the field required and addMessageToChat populates it unconditionally.
- Wired setTodoPhases into the eager-todo ToolSession fixture to mirror sdk.ts; the test relied on the stale message_end todo replay #6148 removed.
- Anchors the incomplete-todo reminder block inside the scrollback transcript instead of a floating live container.
- Eliminates duplicate reminder copies piling up in terminal scrollback during terminal reflows.
- Removes the dedicated `todoReminderContainer` and simplifies state synchronization on todo reload.
- Updates tests to verify sequential reminders commit as separate blocks and are left intact when tools succeed.
`tool_execution_end` for a long-running tool (`task` subagent, async bash
poll, …) is the next streaming event on the parent session when an inner
transient overlay (auto-snapcompact, auto-context-full, auto-retry) nulled the
working loader between the tool's start and end. The overlay-end handlers are
the only loader restorers keyed off the missing reference; if the subagent's
`tool_execution_end` lands while the overlay is still active (or its end
handler errored before re-arming), the spinner stays gone for the rest of the
parent turn even though the agent keeps streaming.
`#handleToolExecutionEnd` now calls `#ensureWorkingLoaderWhileStreaming()`
at the top, mirroring `tool_execution_update` so the working loader survives
a subagent completing inside the overlay window.
Refs #3858
can1357