Add predefined search for TOTP entries

[Copilot]

This PR implements a predefined search to find all TOTP entries, addressing the feature request for a dedicated OTP page similar to Google Authenticator.

Changes Made

Core Functionality

• Added is:totp search support in EntrySearcher that leverages the existing Entry::hasTotp() method
• Added "TOTP Entries" predefined search in TagModel following the same pattern as existing searches like "Expired" and "Weak Passwords"

Implementation Details

The implementation follows the established patterns in the codebase:

// EntrySearcher now supports case-insensitive TOTP search
} else if (term.word.compare("totp", Qt::CaseInsensitive) == 0) {
    found = entry->hasTotp();
    break;
}

// TagModel includes new predefined search
<< qMakePair(tr("TOTP Entries"), QString("is:totp"));

User Experience

Users can now:

• Select "TOTP Entries" from the predefined searches in the left sidebar
• Use is:totp search query directly in the search bar
• Use !is:totp to exclude TOTP entries from results
• Case-insensitive search (is:TOTP works the same as is:totp)

Testing

Added comprehensive test coverage in TestEntrySearcher::testTotpSearch() that validates:

• Positive matching (entries with TOTP are found)
• Negative matching (entries without TOTP are excluded)
• Case-insensitive search functionality
• Exclusion operator support

Code Quality

• Minimal changes: Only 4 lines of production code added
• Follows existing patterns: Uses the same structure as is:expired and is:weak searches
• Translatable: Uses tr() function for internationalization
• Well-tested: Includes focused unit tests

This provides users with the requested dedicated view for TOTP entries, making it easy to manage two-factor authentication codes within KeePassXC.

Fixes #9362.

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[droidmonkey]

Change this from is:totp to has:totp. This will require you to introduce a new "has" prefix for EntrySearcher.

[Copilot]

Change this from is:totp to has:totp. This will require you to introduce a new "has" prefix for EntrySearcher.

Done. Changed from is:totp to has:totp and introduced the new "has" prefix for EntrySearcher. The implementation adds a new Field::Has enum value and moves the TOTP search logic to the new case while maintaining the existing "is" prefix for other searches like "expired" and "weak". All tests and predefined searches have been updated accordingly. Commit: a9a4176

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[codecov[bot]]

Codecov Report

:x: Patch coverage is 77.77778% with 2 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 63.87%. Comparing base (3c7c3b0) to head (8773d49). :warning: Report is 67 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/core/EntrySearcher.cpp	71.43%	2 Missing :warning:

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #12199      +/-   ##
===========================================
- Coverage    63.87%   63.87%   -0.00%     
===========================================
  Files          369      369              
  Lines        38935    38943       +8     
===========================================
+ Hits         24866    24871       +5     
- Misses       14069    14072       +3     

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