fix(components): give command steps the Run/Ran tense verb

[wibus-wee]

Summary

• Command tool calls title themselves with the raw command (sed -n '1,240p' …), so rows in an expanded activity group rendered bare shell text while reads and searches already read as tense-verb sentences ("Read view.tsx", "Searched for …"). Command steps now prepend Run through the shared TOOL_VERB_FORMS map — Running while the call is in flight, Ran once it lands.
• The group header's "Ran N commands" count and the row's verb prefix now share one isCommandToolCall predicate (execute/bash kinds, plus any kind that actually carried terminal I/O), so the counted set and the labeled set cannot drift.
• Titles already carrying a verb, or authored labels that open with a capitalized non-verb word ("Shell: cat x"), keep their own wording — no doubled verbs.
• The shimmering verb is itself the running signal, so an in-flight row with a tense verb drops the trailing spinner; verb-less running rows keep it.

Test plan

• tests/agent-activity-row.test.tsx: expanded group asserts Ran sed -n …, Running pnpm …, the kindless terminal-command case, untouched Shell:/Searched for shapes, and spinner presence only on the verb-less running row (25/25 pass)
• New DesktopCommandSteps story in AssistantTurnAlignment.stories.tsx for visual review (screenshots attached in the authoring conversation)
• pnpm check:quick (oxlint, i18n, boundary guards) + @lody/components typecheck clean

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