Apply argument comment lint across codex-rs (#14652)

## Why

Once the repo-local lint exists, `codex-rs` needs to follow the
checked-in convention and CI needs to keep it from drifting. This commit
applies the fallback `/*param*/` style consistently across existing
positional literal call sites without changing those APIs.

The longer-term preference is still to avoid APIs that require comments
by choosing clearer parameter types and call shapes. This PR is
intentionally the mechanical follow-through for the places where the
existing signatures stay in place.

After rebasing onto newer `main`, the rollout also had to cover newly
introduced `tui_app_server` call sites. That made it clear the first cut
of the CI job was too expensive for the common path: it was spending
almost as much time installing `cargo-dylint` and re-testing the lint
crate as a representative test job spends running product tests. The CI
update keeps the full workspace enforcement but trims that extra
overhead from ordinary `codex-rs` PRs.

## What changed

- keep a dedicated `argument_comment_lint` job in `rust-ci`
- mechanically annotate remaining opaque positional literals across
`codex-rs` with exact `/*param*/` comments, including the rebased
`tui_app_server` call sites that now fall under the lint
- keep the checked-in style aligned with the lint policy by using
`/*param*/` and leaving string and char literals uncommented
- cache `cargo-dylint`, `dylint-link`, and the relevant Cargo
registry/git metadata in the lint job
- split changed-path detection so the lint crate's own `cargo test` step
runs only when `tools/argument-comment-lint/*` or `rust-ci.yml` changes
- continue to run the repo wrapper over the `codex-rs` workspace, so
product-code enforcement is unchanged

Most of the code changes in this commit are intentionally mechanical
comment rewrites or insertions driven by the lint itself.

## Verification

- `./tools/argument-comment-lint/run.sh --workspace`
- `cargo test -p codex-tui-app-server -p codex-tui`
- parsed `.github/workflows/rust-ci.yml` locally with PyYAML

---

* -> #14652
* #14651

codex-rs/tui/src/streaming/controller.rs

@@ -167,13 +167,16 @@ impl PlanStreamController {
         }
 
         self.state.clear();
-        self.emit(out_lines, true)
+        self.emit(out_lines, /*include_bottom_padding*/ true)
     }
 
     /// Step animation: commit at most one queued line and handle end-of-drain cleanup.
     pub(crate) fn on_commit_tick(&mut self) -> (Option<Box<dyn HistoryCell>>, bool) {
         let step = self.state.step();
-        (self.emit(step, false), self.state.is_idle())
+        (
+            self.emit(step, /*include_bottom_padding*/ false),
+            self.state.is_idle(),
+        )
     }
 
     /// Step animation: commit at most `max_lines` queued lines.
@@ -185,7 +188,10 @@ impl PlanStreamController {
         max_lines: usize,
     ) -> (Option<Box<dyn HistoryCell>>, bool) {
         let step = self.state.drain_n(max_lines.max(1));
-        (self.emit(step, false), self.state.is_idle())
+        (
+            self.emit(step, /*include_bottom_padding*/ false),
+            self.state.is_idle(),
+        )
     }
 
     /// Returns the current number of queued plan lines waiting to be displayed.