Hi Proton team,

I’d like to propose a single feature that would improve Proton Drive:

Idea: Extend the existing search bar to filter by tag and add a permanent “Topics” sidebar that lists all user‑defined tags for quick navigation.

Why it matters:

• Users can instantly locate all items with a given tag without opening multiple folders.
• The sidebar provides a visual overview of the tagging taxonomy, helping non‑technical users discover related content.
• Complements the virtual Topic Map view and encourages consistent tagging practices.

Suggested implementation (high‑level):

• Index encrypted tag metadata locally and perform tag‑filtered search client‑side.
• Add a collapsible “Topics” panel on the left side of the Drive UI, showing each tag with a count of matching items.
• Clicking a tag opens the virtual collection view (see Feature 2).
• Take into account later Topic Map extensions like Occurrences and Associations

Thank you for considering this addition.

Best,
Mat Huppertz

(Part of a series of related suggestions – see #0101, #0102, #0103, #0104, #0105, #0106, #0107)