feat(dashboard): make agent card row click-anywhere and Run Now optimistic

- Run Now now optimistically stamps the agent's state to "running" before
  the startAgentRun API call so the card reacts immediately. Rolls back on
  error, mirroring the handleStateChange pattern.
- Whole .agent-card body is clickable (role=button, Enter/Space, focus ring)
  and bails when the click landed on an action button, select, or the
  role-icon so those keep their dedicated behaviors.
- Renamed the card's "View Details" button to "Details" and switched
  .agent-card-actions to flex-wrap: nowrap so Run Now / Pause / Details
  stay on one row regardless of card width.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.changeset/agent-card-list-ux.md

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+---
+"@runfusion/fusion": patch
+---
+
+Three small UX fixes on the agent list card.
+
+- **Optimistic Run Now**: clicking the Run Now button now flips the card's state badge to `running` immediately. The `startAgentRun` API call can take several seconds, and the prior code awaited it before any visual feedback, leaving users unsure whether the click registered. Mirrors the existing `handleStateChange` pattern — stamp the override, await the API, refresh on success, roll back on failure.
+- **Whole-card clickable**: the entire `.agent-card` body opens the agent detail view, not just the name/icon area. Clicks on action buttons (Run Now, Pause, Details, Delete), the role-edit select, and the role-icon button keep their dedicated behaviors via a target check that bails on interactive descendants. `role="button"`, `tabIndex`, and Enter/Space handling preserve keyboard access; a `--focus-ring` outline shows the focus state.
+- **Single-row card actions**: renamed "View Details" → "Details" and switched `.agent-card-actions` to `flex-wrap: nowrap` with per-button `flex-shrink: 0; white-space: nowrap` so Run Now / Pause / Details stay on one row regardless of card width.