[gravitypdf-bot]

Fixes #94

QPXML::createElement() resolved a name's prefix with ownerDocument->lookupNamespaceURI(), so only prefixes declared on the document element worked; one declared lower down threw "Undefined namespace for: y:item". It now resolves the prefix against the first matched element, where root-declared prefixes are in scope too.

The foreach that returned on its first pass is replaced with get(0) and an early return for an empty match set. Callers see the same behaviour as before. The docblock now says the method works on the first match.

Tests:

• a prefix declared below the root, and one declared on the root;
• an out-of-scope prefix still throws;
• only the first match is used;
• an empty match set returns an empty DOMQuery.

The below-root and first-match tests fail on main.

🤖 Generated with Claude Code

[codecov]

Codecov Report

❌ Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 90.38%. Comparing base (86f107c) to head (b40b4c3).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/Extension/QPXML.php	90.90%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #102      +/-   ##
============================================
+ Coverage     90.32%   90.38%   +0.05%     
  Complexity     1430     1430              
============================================
  Files            25       25              
  Lines          3185     3181       -4     
============================================
- Hits           2877     2875       -2     
+ Misses          308      306       -2     

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