[#hql] - Fix operator types, Token handling, bracket identifiers and join conditions

[niden]

Summary

• Opcode.php — 11 single-character operator constants (+, -, *, /, %, >, !, &, |, ~, ^) were defined as PHP strings instead of their ASCII integer values, causing type fields in the parser AST to be characters instead of integers
• parser.php — phql_ret_raw_qualified_name() — function accepted string $tokenA but the parser passes Token objects for CAST/CONVERT type names; changed to accept Token and call ->getValue()
• Scanner.php — case 138 (bracket identifiers) — [col\[0\]]-style escaped-bracket identifiers used $q+1 as the value start instead of $yymarker, which the C re2c scanner updates (via PPMARKER = ++PPCURSOR) when processing \] sequences
• Scanner.php — case 41 (IDENTIFIER terminal) — identifiers that share a keyword prefix (e.g. Notes starting with NOT) returned the full identifier instead of the post-keyword suffix; fixed by initializing $yymarker = $yycursor at the start of each token scan and using $yymarker in case 41, matching the re2c PPMARKER overwrite behavior in the C scanner
• parser.php — case 38 (empty join_conditions) — empty join_conditions rule returned [] instead of null, causing CROSS JOIN (and other conditionless joins) to include a spurious 'conditions' => [] in the AST

Test plan

• All 148 tests in tests/unit/Mvc/Model/Query/Phql/ pass
• No regressions in the existing test suite

[codecov]

Codecov Report

❌ Patch coverage is 63.15789% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 32.90%. Comparing base (be3df07) to head (801ce59).
⚠️ Report is 3 commits behind head on 1.0.x.

Files with missing lines	Patch %	Lines
resources/files/parser.php	16.66%	5 Missing ⚠️
src/Scanner/Scanner.php	84.61%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##              1.0.x       #6   +/-   ##
=========================================
  Coverage     32.90%   32.90%           
  Complexity     5600     5600           
=========================================
  Files             7        7           
  Lines          8683     8686    +3     
=========================================
+ Hits           2857     2858    +1     
- Misses         5826     5828    +2     

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