Add full Settings interface with Monaco Editor configuration options

Major addition:
• New Settings page opened from navbar "Edit" link
• Organized into logical groups with immediate effect:
  - Font:
    • Font Size (px slider 8–40)
    • Font Family (custom input)
    • Line Height (0 = default)
    • Font Ligatures (on/off)
  - Editor:
    • Tab Size (1–16)
    • Word Wrap (off/on/column/bounded)
    • Line Numbers (on/off/relative/interval)
    • Render Whitespace (none/boundary/selection/trailing/all)
    • Scroll Beyond Last Line (toggle)
    • Bracket Pair Colorization (toggle)
  - Cursor:
    • Cursor Style (line/block/underline/thin variants + outlines)
    • Cursor Blinking (blink/smooth/phase/expand/solid)
  - UI:
    • Minimap (enabled/disabled)
• Settings are type-safe (numbers, selects, toggles) with min/max/step where applicable
• Changes apply live to open editors
• Persisted settings loaded on startup

Gives users deep control over the editing experience — huge step toward personalization

Add full Settings interface with Monaco Editor configuration options

Major addition:
• New Settings page opened from navbar "Edit" link
• Organized into logical groups with immediate effect:
  - Font:
    • Font Size (px slider 8–40)
    • Font Family (custom input)
    • Line Height (0 = default)
    • Font Ligatures (on/off)
  - Editor:
    • Tab Size (1–16)
    • Word Wrap (off/on/column/bounded)
    • Line Numbers (on/off/relative/interval)
    • Render Whitespace (none/boundary/selection/trailing/all)
    • Scroll Beyond Last Line (toggle)
    • Bracket Pair Colorization (toggle)
  - Cursor:
    • Cursor Style (line/block/underline/thin variants + outlines)
    • Cursor Blinking (blink/smooth/phase/expand/solid)
  - UI:
    • Minimap (enabled/disabled)
• Settings are type-safe (numbers, selects, toggles) with min/max/step where applicable
• Changes apply live to open editors
• Persisted settings loaded on startup

Gives users deep control over the editing experience — huge step toward personalization

Implement auto-updates + ALT key to show navbar with update button

- Add automatic update checking mechanism (background checks for new versions)
- Integrate update download/install flow (notify user, restart on apply)
- Press ALT key to temporarily display hidden navbar links
- Show "Update" button/link in the revealed navbar when an update is available
- Basic UI feedback: update status indicators, progress during download
- Fallback: manual check via the ALT-revealed button

Bug fixes

Some terminal cwd fixes

Add terminal next to Problems panel

- Integrated terminal with multiple tabs
- Easy tab navigation and management
- Support for selecting different shells/profiles

Add Ctrl + ` shortcut to open/focus terminal

docs: Update README with new development version `v0.0.7-patch` and a…

…djust `v0.0.6-dev` stability, and update package dependencies.

Some fixes with file/folder renaming in Windows based systems & Linux…

… build

Fixes for image preview on Windows based systems

Implement changelog modal and modern glassmorphism look

- Add floating changelog modal anchored to bottom-right
- Use glassmorphism design: background blur, transparency, soft shadows
- Track app version to show modal only when there's new content / update
- Store dismissal / viewed state to avoid repeated popups
- Initial changelog content with placeholder entries