Feature suggestion: Project-wide sharing and referencing of chat content within a folder

Description:
Please enable chats within a project/folder to access the content (or marked summaries) of other chats in the same project. This would allow, for example, key insights, notes, or results from different threads to be visible and usable for all colleagues/agents in the project—without the need for time-consuming copy & paste or manual uploading of files/markdowns.

It would be desirable to have:

• The ability to mark selected chat messages (e.g., summaries or important steps) as "project knowledge."

• This marked content is available in other chats in the same project as contextual information (e.g., via search function or automatic integration into system instructions/dynamic prompts).

• Optional: Project-wide search function across all chats and/or display of selected "shared notes" or "project summaries."

Added value:
This makes it easier to work on larger projects divided into sub-threads, saves repetition, reduces errors due to loss of information, and speeds up knowledge transfer within the team.