Update trail watch review event endpoint

[dipree]

Summary

• point entire trail watch at GET /api/v1/trails/:trail_id/reviews/events
• keep Accept: text/event-stream SSE negotiation through the existing stream client
• use the stable trail.id field from trail list responses before constructing the stream URL
• update endpoint/id coverage

Tests

• mise exec -- go test ./cmd/entire/cli ./cmd/entire/cli/api
• mise exec -- golangci-lint run ./cmd/entire/cli ./cmd/entire/cli/api

[Copilot]

Pull request overview

This PR updates the entire trail watch command to consume code-review SSE events from the new trail-scoped endpoint while preserving existing Accept: text/event-stream negotiation via the stream client.

Changes:

• Updated the streamed endpoint from query-based /api/v1/review-events?... to /api/v1/trails/:trail_id/review/events.
• Updated reviewEventsPath to build the new path using url.PathEscape for the trail ID segment.
• Adjusted unit test expectations to match the new endpoint path and escaping behavior.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
cmd/entire/cli/trail_watch_cmd.go	Updates help text and switches reviewEventsPath to the new trail-scoped review events SSE endpoint.
cmd/entire/cli/trail_watch_cmd_test.go	Updates TestReviewEventsPath to validate the new endpoint path and path-segment escaping.