Context summarization loses current working directory and project location

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue
- [x] I have run `q doctor` in the affected terminal session
- [x] I have run `q restart` and replicated the issue again

### Operating system

macOS 15.3.0 (24D60)

### Expected behaviour

When the context window overflows and conversation history is summarized, Amazon Q should preserve and restore the current working directory and project context. After summarization, Q should continue working in the same directory without needing to re-discover the project location.

### Actual behaviour

When context window overflow triggers history summarization, Amazon Q loses track of the current working directory and project location. After summarization, Q attempts to re-discover the project location, which is time-consuming and often unsuccessful, leading to workflow interruption and repeated navigation attempts.

### Steps to reproduce

1. Navigate to a specific project directory (e.g., "cd project-folder")
2. Begin working on a task that requires multiple interactions (e.g., "fix the failing unit tests")
3. Continue the conversation until context window overflow occurs and history gets summarized
4. Observe that Q no longer knows the current working directory
5. Q will attempt to re-find the project location instead of continuing work in the established directory

### Environment

```yaml

```

Es werden keine Quelldateien, Tests oder Einstiegspunkte genannt. Beginne damit, das Problem zu reproduzieren, nachdem eine Unterhaltung das Kontextlimit überschritten hat, und verfolge dann den Ablauf der Zusammenfassung sowie, wie das aktuelle Verzeichnis und der Projektstandort dargestellt werden. Als abgeschlossen gilt die Aufgabe, wenn die zusammengefasste Unterhaltung diesen Kontext bewahrt und die Arbeit ohne erneute Suche im ursprünglichen Verzeichnis fortgesetzt wird.

Vom Indexierungsmodell aus dem Issue-Text verfasst.