plugins: add capability to show real time updates to the cli

[macabeus]

Add the new optional method setStatusCallback for the Pugin interface.

It's used to display on the CLI a few lines with the real time status for the plugin.
For now, only the Claude Runner plugin uses it.

[Copilot]

Pull request overview

This PR adds a plugin status callback mechanism that enables real-time UI updates from plugins during execution. The Claude Runner plugin uses this to display live tool call activity, streaming text, elapsed time, and tool call counters in the CLI. The new setStatusCallback optional method on the Plugin interface receives a callback that plugins invoke with structured PluginStatusData (log lines and stats), which the PluginManager relays as PluginStatusUpdateEvent pipeline events for the Ink-based CLI to render.

Changes:

• Added PluginStatusData type and optional setStatusCallback method to the Plugin interface, plus a new PluginStatusUpdateEvent pipeline event type.
• Implemented live status emission in ClaudeRunnerPlugin with tool call tracking, text streaming, and elapsed time display, using a 1-second interval timer alongside per-message updates.
• Wired the status callback in PluginManager and rendered the status data (stats bar + log lines) in the run.tsx Ink UI component.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/shared/types.ts	Added PluginStatusData interface and optional setStatusCallback to Plugin interface
src/shared/pipeline-events.ts	Added PluginStatusUpdateEvent to the pipeline event union
src/plugins/claude-runner/claude-runner-plugin.ts	Implemented status emission with timer, tool/text tracking, and formatted stats
src/plugins/claude-runner/claude-runner-plugin.spec.ts	Added tests verifying status callback emits structured data with tool/text indicators
src/plugin-manager.ts	Wired setStatusCallback before plugin execution and clears status on completion/error
src/commands/run.tsx	Extended PluginStatus with logLines/stats, handled new event, rendered status in UI

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