Extend output-free transcript summaries to more tools (#60555)

## What changed

- Add summary labels for MCP and dynamic tools, computer activity, terminal interactions, file edits, images, plan updates, agent calls, and historical tool fallbacks.
- Keep tool output out of summaries and give summaries disclosure identities even when their cells have no activity IDs.
- Bring focused disclosure headers into view and show `expand` or `collapse` in the footer, including for search-expanded entries.

## Testing

Add assertions for tool labels, a transcript snapshot verifying that image-generation output stays hidden, and coverage for expanded and collapsed footer hints.

GitOrigin-RevId: 076b8d74c17f26b10aa8221c65b8b38dbb5ad5ea

codex-rs/tui/src/thread_transcript/tools.rs

@@ -27,7 +27,9 @@ use ratatui::text::Line;
 /// Preserve status and output when replay cannot reconstruct a rich completed tool cell.
 /// Declined commands never ran, and historical terminal interactions do not carry stdin details.
 /// Pending items retain their last known state without starting a running clock.
-pub(crate) fn historical_tool_fallback(item: &ThreadItemPayload) -> Option<PlainHistoryCell> {
+pub(crate) fn historical_tool_fallback(
+    item: &ThreadItemPayload,
+) -> Option<crate::history_cell::LabeledToolCell> {
     let lines = match item {
         ThreadItemPayload::CommandExecution {
             command,
@@ -108,7 +110,16 @@ pub(crate) fn historical_tool_fallback(item: &ThreadItemPayload) -> Option<Plain
         }
         _ => return None,
     };
-    Some(PlainHistoryCell::new(lines))
+    let cell = PlainHistoryCell::new(lines);
+    Some(match item {
+        ThreadItemPayload::CommandExecution {
+            status: CommandExecutionStatus::Declined,
+            command,
+            ..
+        } => cell.with_tool_label(format!("Declined · {command}")),
+        ThreadItemPayload::CommandExecution { .. } => cell.with_tool_header(/*count*/ 2),
+        _ => cell.with_tool_header(/*count*/ 1),
+    })
 }
 
 // The protocol joins argv with shlex. Keep noncanonical legacy commands verbatim.

codex-rs/tui/src/thread_transcript/tools_tests.rs

@@ -229,6 +229,9 @@ fn historical_command_fallbacks_preserve_status_output_and_group_boundaries() {
             /*config*/ None,
         );
         assert_eq!(cells.len(), 3);
+        if label == "declined" {
+            assert_eq!(cells[1].tool_call_labels(), ["Declined · cargo check"]);
+        }
         for cell in [&cells[0], &cells[2]] {
             assert!(
                 cell.as_any()