Adds a space so that sequential citations have some more breathing room.
As I had to update the tests for this change, I also introduced a
`toDiffableString()` helper to make the test easier to update as we make
formatting changes to the output.
This PR uses [`pnpm
patch`](https://www.petermekhaeil.com/til/pnpm-patch/) to pull in the
following proposed fixes for `marked-terminal`:
* https://github.com/mikaelbr/marked-terminal/pull/366
* https://github.com/mikaelbr/marked-terminal/pull/367
This adds a substantial test to `codex-cli/tests/markdown.test.tsx` to
verify the new behavior.
Note that one of the tests shows two citations being split across a line
even though the rendered version would fit comfortably on one line.
Changing this likely requires a subtle fix to `marked-terminal` to
account for "rendered length" when determining line breaks.
This PR introduces the following type:
```typescript
export type FileOpenerScheme = "vscode" | "cursor" | "windsurf";
```
and uses it as the new type for a `fileOpener` option in `config.json`.
If set, this will be used to linkify file annotations in the output
using the URI-based file opener supported in VS Code-based IDEs.
Currently, this does not pass:
Updated `codex-cli/tests/markdown.test.tsx` to verify the new behavior.
Note it required mocking `supports-hyperlinks` and temporarily modifying
`chalk.level` to yield the desired output.
