feat(cli): add pipeline progress spinners to timeline and search

Adds numbered stage spinners ([1/3], [2/3], [3/3]) to the timeline
pipeline stages (seed, expand, collect) so users see activity during
longer queries. TimelineParams gains a robot_mode field to suppress
spinners in JSON output mode.

Adds a [1/1] spinner to the search command for consistency, using the
shared stage_spinner from cli/progress.

Also refactors wrap_snippet() to delegate to wrap_text() with a 4-line
cap, eliminating the duplicated word-wrapping logic.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/main.rs

@@ -1784,6 +1784,7 @@ async fn handle_timeline(
         max_seeds: args.max_seeds,
         max_entities: args.max_entities,
         max_evidence: args.max_evidence,
+        robot_mode,
     };
 
     let result = run_timeline(&config, &params).await?;
@@ -1828,6 +1829,12 @@ async fn handle_search(
         limit: args.limit,
     };
 
+    let spinner = lore::cli::progress::stage_spinner(
+        1,
+        1,
+        &format!("Searching ({})...", args.mode),
+        robot_mode,
+    );
     let start = std::time::Instant::now();
     let response = run_search(
         &config,
@@ -1839,6 +1846,7 @@ async fn handle_search(
     )
     .await?;
     let elapsed_ms = start.elapsed().as_millis() as u64;
+    spinner.finish_and_clear();
 
     if robot_mode {
         print_search_results_json(&response, elapsed_ms, args.fields.as_deref());