SECRETS-86 Add single environment view to overview

✅ Snyk checks have passed. No issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues

💻 Catch issues earlier using the plugins for VS Code, JetBrains IDEs, Visual Studio, and Eclipse.

Greptile Overview

Greptile Summary

This PR adds single-environment view support to the overview page, providing a flat display when only one environment is selected. Key enhancements include:

• Environment persistence: Environment selection is now stored in localStorage per project using overview-selected-envs-${projectId}
• Single-env inline editing: When one environment is selected, secrets, folders, dynamic secrets, and secret rotations display inline with edit capabilities
• Secret key editing: Added inline secret name editing in single-env view
• Folder enhancements: Added description display and delete handling with action animations
• Search improvements: Enhanced search bar with dropdown to differentiate between current folder and deep search (all folders)
• Override support: Single-env view displays secret overrides inline with improved visual hierarchy

The changes are primarily UI/UX improvements with no backend modifications. All changes maintain existing permission checks and follow the established patterns in the codebase.

Confidence Score: 5/5

• Safe to merge - frontend-only UI improvements with proper permission checks maintained
• This PR implements well-structured frontend enhancements. All security patterns (permission checks, validation) are preserved from existing code. No regex usage, no URL manipulation, no backend changes, and no breaking API changes. The code follows React best practices with proper hooks usage and state management.
• No files require special attention

Important Files Changed

_{Last reviewed commit: 45dbd1f}