Feature/parser refactor phase2

[niden]

Volt Parser Refactor — Phase 2

Refactors Phalcon\Volt\Parser\Parser to be stateless and reusable across multiple parse calls.

Changes

src/Parser/Parser.php

• Removed private ?Token $token instance property - $token is now a local variable inside parse()
• Renamed parseView(string $templatePath) to parse(string $code, string $templatePath = 'eval code'): array, where $templatePath defaults to 'eval code' to match the original C implementation behavior (used only in error messages, never affects the AST)
• Added setDebug(bool): static and setDebugFile(string): static fluent setters replacing direct property access via Reflection
• Replaced switch with match for opcode dispatch
• Extracted all complex opcode handlers into focused private methods (handleIf, handleFor, handleBlock, handleMacro, handleSwitch, handleCase, handleDefault, handleExtends, handleRawFragment, handleSet, handleOpenEdelimiter, handleRaw, handleEndraw, handleElseif, handleEndif, handleEndfor, handleEndblock, handleEndmacro, handleEndswitch, handleUnknownOpcode)
• Simplified parseWithToken() to use $token->opcode directly, removing the redundant int $opcode parameter - aligning with PHQL's makeParserToken pattern
• Inlined the handleDefault token relabelling (the one genuine case where the opcode differs from the token's own opcode)

src/Compiler.php

• Updated both call sites to use the new stateless API: new Parser() and ->parse($viewCode, $path) instead of new Parser($viewCode) and ->parseView($path)

Updated all tests

[codecov]

Codecov Report

❌ Patch coverage is 95.98662% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.78%. Comparing base (75111d6) to head (86297a2).
⚠️ Report is 12 commits behind head on master.

Files with missing lines	Patch %	Lines
src/Parser/Parser.php	95.38%	12 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master      #70      +/-   ##
============================================
- Coverage     85.93%   85.78%   -0.16%     
+ Complexity     4551     4482      -69     
============================================
  Files             9        9              
  Lines          6564     6491      -73     
============================================
- Hits           5641     5568      -73     
  Misses          923      923              

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