Fix cat command to read actual files from VirtualFileSystem

[Copilot]

The cat command had a placeholder implementation that only returned hardcoded content for "config.yml" and "No such file" for everything else. It never read actual files from the filesystem.

Changes

Replaced placeholder with VFS integration

• Uses VirtualFileSystem.resolvePath() with current directory context
• Reads file content via Files.readAllLines()
• Handles relative paths, absolute paths (/), and home paths (~)
• Proper error messages for: file not found, is a directory, IO errors

Before:

if (filename.equals("config.yml")) {
    // Hardcoded content
} else {
    output.add(new CommandResult.OutputLine("cat: " + filename + ": No such file", ERROR_COLOR));
}

After:

VirtualFileSystem vfs = VirtualFileSystem.getInstance();
Path filePath = vfs.resolvePath(filename, context.getCurrentPath());

if (!Files.exists(filePath)) {
    return CommandResult.error("cat: " + filename + ": No such file or directory", ERROR_COLOR);
}
if (Files.isDirectory(filePath)) {
    return CommandResult.error("cat: " + filename + ": Is a directory", ERROR_COLOR);
}

List<String> lines = Files.readAllLines(filePath);
for (String line : lines) {
    output.add(new CommandResult.OutputLine(line, TEXT_COLOR));
}

Verification

All file commands (cat, touch, mkdir, editors) now consistently use vfs.resolvePath(filename, context.getCurrentPath()), ensuring relative paths resolve from the current directory as expected.

Original prompt

Overview

Transform the existing terminal implementation into a fully functional Linux-style terminal within Minecraft, with proper command systems, theming, and advanced window management.

Features to Implement

1. Core Linux Terminal Commands (Minecraft-adapted)

Implement these standard Linux commands adapted for Minecraft context:

File/Navigation Commands:

• ls - List current "directory" contents (inventory slots, world files, etc.)
• cd - Change directory (navigate between inventory, hotbar, armor, etc.)
• pwd - Print working directory
• cat - Display item details/NBT data
• cp - Copy items between slots
• mv - Move items between slots
• rm - Delete/drop items (with confirmation for valuable items)
• mkdir - Create chest/container at location
• touch - Create empty slot marker
• find - Search for items in inventory/nearby chests
• grep - Search item names/lore

System Commands:

• echo - Print text
• clear - Clear terminal
• history - Show command history
• alias - Create command aliases
• export - Set environment variables
• env - Show environment variables
• whoami - Show player name
• hostname - Show server/world name
• uname - System info
• neofetch / fastfetch - Styled system info display
• man - Manual pages for commands
• help - Help system

Process/Entity Commands:

• ps - List nearby entities
• top - Real-time entity/performance monitor
• kill - Target entity (requires appropriate tools/permissions)
• htop - Interactive process viewer

2. Minecraft-Specific Command Protocols

Client Settings (/client or set command):

set client.fov 90
set client.volume.master 0.8
set client.volume.music 0.5
set client.render_distance 12
set client.gamma 1.0
set client.fullscreen true
set client.vsync on
get client.fov

Inventory Management (/inv namespace):

inv list                    # List all inventory
inv hotbar                  # Show hotbar items
inv armor                   # Show armor slots
inv move 0 36              # Move item from slot 0 to slot 36
inv swap 0 1               # Swap two slots
inv drop 5                 # Drop item in slot 5
inv drop 5 --stack         # Drop entire stack
inv sort                   # Sort inventory
inv search diamond         # Find items containing "diamond"

World Interaction (/world namespace):

world time                  # Get current time
world weather              # Get weather
world seed                 # Show seed (if allowed)
world pos                  # Show player position
world biome                # Show current biome
world difficulty           # Show difficulty

Player Stats (/stats namespace):

stats health               # Show health
stats hunger               # Show hunger
stats xp                   # Show XP
stats effects              # List active effects
stats armor                # Show armor value

3. Theme System (limcs-themes command)

Catppuccin Themes:

• Catppuccin Latte (light)
• Catppuccin Frappe
• Catppuccin Macchiato
• Catppuccin Mocha (dark)

Custom Themes:

• Gruvbox Dark
• Gruvbox Light
• Nord
• Dracula
• Tokyo Night
• One Dark
• Solarized Dark
• Solarized Light
• LIMCS Default (current gruvbox-ish)
• Matrix (green on black)
• Retro (amber on black)

Theme command usage:

limcs-themes                    # List available themes
limcs-themes list              # List available themes
limcs-themes set mocha         # Apply Catppuccin Mocha
limcs-themes preview dracula   # Preview theme temporarily
limcs-themes create mytheme    # Create custom theme (opens editor)
limcs-themes export            # Export current theme

Theme structure should include:

• Background color (with alpha for transparency)
• Foreground/text color
• Prompt colors (user, host, path, symbol)
• Error color
• Success color
• Warning color
• Accent colors (cyan, magenta, yellow, etc.)
• Selection/highlight color
• Border colors (focused/unfocused)

4. Hyprland-Style Window Management

Dynamic Tiling:

• Windows automatically tile to fill available space
• Grid adjusts dynamically based on window count (already partially implemented)
• Smart insertion at mouse position

Mouse Resizing:

• Drag window borders to resize
• Adjacent windows adjust automatically
• Minimum window size enforced
• Visual resize handles on hover

Window Transparency:

• Configurable background alpha (0.0 - 1.0)
• Command: set terminal.opacity 0.85
• Different opacity for focused vs unfocused windows

Background Blur:

• Blur effect behind transparent terminals
• Configurable blur strength
• Command: set terminal.blur 8

Additional Window Features:

• Double-click title bar to maximize/restore
• Drag window to reposition (temporarily breaks tiling, snaps back)
• Window shadows for depth
• Smooth animations for resize/tile operations

5. Command History with Up Arrow

History Features:
...

This pull request was created from Copilot chat.

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