fix: prevent empty mode names from being saved (#5766)

[daniel-lxs]

Fixes #5766

Problem

If the user cleared the custom mode name field, the change was saved immediately. This made the custom modes YAML file invalid, and all custom modes disappeared.

Solution

Keep a local state while the field is being edited. Only save the change on blur, and only if the name is not empty.

---

Important

Fixes issue with empty mode names by adding local state management and backend validation in ModesView.tsx and CustomModesManager.ts.

• Behavior:
  • Allows users to visually empty mode name field in ModesView.tsx.
  • Saves only non-empty mode names on blur in ModesView.tsx.
  • Backend validation in CustomModesManager.ts to reject empty mode names.
• State Management:
  • Adds localModeName and currentEditingModeSlug state in ModesView.tsx to manage input field state.
  • Resets local state when mode changes in ModesView.tsx.
• Validation:
  • Validates mode configuration using modeConfigSchema in CustomModesManager.ts.

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[delve-auditor]

✅ No security or compliance issues detected. Reviewed everything up to fc2c886.

Security Overview

• 🔎 Scanned files: 2 changed file(s)

Detected Code Changes

Change Type	Relevant files
Bug Fix	► CustomModesManager.ts     Add validation for mode configuration using modeConfigSchema ► ModesView.tsx     Implement local state management for mode names     Add onBlur validation for non-empty names
Refactor	► getEnvironmentDetails.ts     Improve time formatting and display ► scanner.ts     Refactor code block processing and batch handling ► constants/index.ts     Update MAX_LIST_FILES_LIMIT constant ► file-processor.ts     Add codeBlocks to return interface

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