Plan mode is entered through /plan only — the select control is retired.
The conversation.input.plan seat (now right of the access-mode control)
renders a read-only Plan chip while the projection's effective target is
plan mode; its hover x executes /plan off, and the chip follows the folded
target (appears on /plan immediately, disappears on /plan off) with frames
correcting either way. While plan mode is targeted the composer textarea's
placeholder switches to the plan-task wording — InputBar reads the same
projection through the standard-kit useProjection (the TodoDock posture:
a type-only key merge, no domain service edge), and owner placeholders
still win.
Regenerate the cordis/config/persistence catalogs and the module graph for
the ui-plan package and the plan projection unit; add the ui-plan Chinese
README and the Model Experience indirect sentence (allowlisted: the control
dispatches /plan lines, dsh-plan-mode owns the model surface); carry the
QuestionComposer Markdown/scroll improvements into the Chinese ui-question
README; re-record the three touched translation pairs.
