feat(cli): status display/filtering, expanded --fields, and robot-docs --brief

Work item status integration across all CLI output:

Issue listing (lore list issues):
- New Status column appears when any issue has status data, with
  hex-color rendering using ANSI 256-color approximation
- New --status flag for case-insensitive filtering (OR logic for
  multiple values): lore issues --status "In progress" --status "To do"
- Status fields (name, category, color, icon_name, synced_at) in issue
  list query and JSON output with conditional serialization

Issue detail (lore show issue):
- Displays "Status: In progress (in_progress)" with color-coded output
  using ANSI 256-color approximation from hex color values
- Status fields included in robot mode JSON with ISO timestamps
- IssueRow, IssueDetail, IssueDetailJson all carry status columns

Robot mode field selection expanded to new commands:
- search: --fields with "minimal" preset (document_id, title, source_type, score)
- timeline: --fields with "minimal" preset (timestamp, type, entity_iid, detail)
- who: --fields with per-mode presets (expert_minimal, workload_minimal, etc.)
- robot-docs: new --brief flag strips response_schema from output (~60% smaller)
- strip_schemas() utility in robot.rs for --brief mode
- expand_fields_preset() extended for search, timeline, and all who modes

Robot-docs manifest updated with --status flag documentation, --fields
flags for search/timeline/who, fields_presets sections, and corrected
search response schema field names.

Note: replaces empty commit dcfd449 which lost staging during hook execution.

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

src/cli/commands/timeline.rs

@@ -252,6 +252,7 @@ pub fn print_timeline_json_with_meta(
     total_events_before_limit: usize,
     depth: u32,
     expand_mentions: bool,
+    fields: Option<&[String]>,
 ) {
     let output = TimelineJsonEnvelope {
         ok: true,
@@ -268,10 +269,18 @@ pub fn print_timeline_json_with_meta(
         },
     };
 
-    match serde_json::to_string(&output) {
-        Ok(json) => println!("{json}"),
-        Err(e) => eprintln!("Error serializing timeline JSON: {e}"),
+    let mut value = match serde_json::to_value(&output) {
+        Ok(v) => v,
+        Err(e) => {
+            eprintln!("Error serializing timeline JSON: {e}");
+            return;
+        }
+    };
+    if let Some(f) = fields {
+        let expanded = crate::cli::robot::expand_fields_preset(f, "timeline");
+        crate::cli::robot::filter_fields(&mut value, "events", &expanded);
     }
+    println!("{}", serde_json::to_string(&value).unwrap());
 }
 
 #[derive(Serialize)]