Feature: Add {{host}} variable to profile

[BornToBeRoot]

Changes proposed in this pull request

• Add {{host}} variable to profile

Related issue(s)

• Fixes Profile - Add variable for Host/IP #437

Copilot generated summary

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Copilot summary

This pull request introduces a new, unified placeholder syntax ({{Name}}) for profile and custom command fields throughout the application, replacing the old $var$ format. It also adds a reusable helper for resolving these placeholders, updates the migration logic to convert existing user settings, and improves validation and localization for user-facing fields.

Placeholder System Modernization

• Introduced the PlaceholderHelper utility class to resolve case-insensitive {{Name}} placeholders in strings, replacing the previous ad-hoc regex usage.
• Updated all relevant code paths (PowerShell, PuTTY, WebConsole, and IP Scanner custom commands) to use PlaceholderHelper.Resolve for consistent placeholder substitution. [1] [2] [3] [4] [5]
• Changed the default placeholder usage in IPScannerCustomCommand and related resources to use {{IPAddress}} and {{Hostname}} instead of $ipaddress$ and $hostname$. [1] [2]

Migration and Backward Compatibility

• Added migration logic in SettingsManager to automatically convert existing custom commands from the old $var$ syntax to the new {{Var}} format on upgrade.

Validation and Defaults

• Added a new WebConsoleProfileUrlValidator to allow the {{Host}} placeholder in the WebConsole URL field while ensuring valid URL structure.
• Set the default value for WebConsole_Url to "https://{{Host}}" for new profiles.
• Updated import logic to enable the WebConsole tool by default when importing relevant profiles. [1] [2]

Localization and Resource Updates

• Added and updated localization strings and resources to reflect the new placeholder syntax and provide improved help messages for custom commands. [1] [2] [3] [4]

Other

• Bumped assembly version numbers to reflect the new release.
• Added missing project references for the new utility class.
• Minor code cleanups and namespace imports for consistency. [1] [2] [3] [4] [5]

These changes ensure a more flexible, maintainable, and user-friendly approach to handling dynamic values in commands and profile fields.

To-Do

• Update documentation to reflect this changes
• Update changelog to reflect this changes

Contributing

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• I have read and understood the contributing guidelines and the code of conduct.
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• The code or resource is compatible with the GNU General Public License v3.0.

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Pull request overview

This PR implements issue #437 by introducing a {{Host}} profile placeholder (and modernizing the IP Scanner custom-command placeholder syntax from $$var$$ to {{Var}}). It adds a shared PlaceholderHelper utility that resolves case-insensitive {{name}} tokens, wires it into the WebConsole/PowerShell/PuTTY session builders and the IP Scanner runtime, adds a profile-specific URL validator that tolerates the placeholder, migrates existing user settings, and updates localization and documentation accordingly.

Changes:

• New PlaceholderHelper centralizes {{name}} resolution; WebConsole URL, PowerShell/PuTTY additional command lines (profile + ad-hoc), and IP Scanner custom commands now resolve placeholders through it.
• New profile defaults (WebConsole_Url = "https://{{Host}}"), a WebConsoleProfileUrlValidator, WebConsole added to profile-import defaults, and a settings migration converting old $$ipaddress$$/$$hostname$$ custom commands.
• Localization keys, in-app help tooltips, docs, changelog, and the assembly version were updated.

Reviewed changes

Copilot reviewed 28 out of 29 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Source/NETworkManager.Utilities/PlaceholderHelper.cs	New helper resolving case-insensitive {{name}} placeholders (null-safe).
Source/NETworkManager.Validators/WebConsoleProfileUrlValidator.cs	New validator that swaps {{host}} for a dummy host before URL validation.
Source/NETworkManager.Profiles/Application/WebConsole.cs	Resolves {{Host}} in profile WebConsole URL.
Source/NETworkManager.Profiles/Application/PowerShell.cs	Resolves {{Host}} in additional command line.
Source/NETworkManager.Profiles/Application/PuTTY.cs	Resolves {{Host}} in additional command line.
Source/NETworkManager.Profiles/ProfileInfo.cs	Default WebConsole_Url set to https://{{Host}}.
Source/NETworkManager.Profiles/NETworkManager.Profiles.csproj	Adds reference to NETworkManager.Utilities.
Source/NETworkManager.Models/Network/IPScannerCustomCommand.cs	Default commands switched to {{IPAddress}}.
Source/NETworkManager.Settings/SettingsManager.cs	Migrates existing IP Scanner custom commands to new syntax.
Source/NETworkManager/ViewModels/IPScannerViewModel.cs	Uses PlaceholderHelper for runtime substitution; drops unused Regex import.
Source/NETworkManager/ViewModels/PowerShellHostViewModel.cs	Ad-hoc connect resolves {{Host}}.
Source/NETworkManager/ViewModels/PuTTYHostViewModel.cs	Ad-hoc connect resolves {{Host}} (null for serial mode).
Source/NETworkManager/ViewModels/ImportProfilesResultViewModel.cs	Enables WebConsole by default on import.
Source/NETworkManager/Views/ProfileChildWindow.xaml	Adds host-placeholder help tooltips; switches URL validator.
Source/NETworkManager/Views/GroupChildWindow.xaml	Adds help tooltips (and trims trailing whitespace).
Source/NETworkManager/Views/CustomCommandChildWindow.xaml	Replaces variables help with placeholder table tooltips.
Source/NETworkManager/Views/PowerShellSettingsView.xaml	Adds placeholder help tooltip.
Source/NETworkManager/Views/PowerShellConnectChildWindow.xaml	Adds a 4th grid column + placeholder help tooltip.
Source/NETworkManager/Views/PuTTYSettingsView.xaml	Adds placeholder help tooltip.
Source/NETworkManager/Views/PuTTYConnectChildWindow.xaml	Adds placeholder help tooltip.
Source/NETworkManager.Localization/Resources/Strings.resx	Adds placeholder/help keys; removes old variables help key.
Source/NETworkManager.Localization/Resources/Strings.Designer.cs	Regenerated accessors for the new/removed keys.
Source/NETworkManager.Localization/Resources/StaticStrings.resx	Example updated to {{Hostname}}.
Source/GlobalAssemblyInfo.cs	Version bump to 2026.7.4.0.
Website/docs/application/web-console.md	Documents {{Host}} in URL.
Website/docs/application/powershell.md	Documents {{Host}} in command line fields.
Website/docs/application/putty.md	Documents {{Host}}, incl. serial caveat.
Website/docs/application/ip-scanner.md	Updates placeholder examples to {{...}}.
Website/docs/changelog/next-release.md	Adds migration + profile placeholder notes.

Files not reviewed (1)

• Source/NETworkManager.Localization/Resources/Strings.Designer.cs: Generated file

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[Copilot]

Fixed in the latest commit — replaced the inline Regex.Replace with PlaceholderHelper.Replace(…, PlaceholderHelper.Host, "placeholder-host") and dropped the now-unused System.Text.RegularExpressions import.