Fix toml-test issues

[roxblnfk]

I tested using the toml-test utility and got the following result:

┌──────────────────────────┬──────────────────────────────────────────────────────────┐
│         Category         │                            Fails                         │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ invalid/control (26)     │ No validation of control characters in strings/comments  │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ invalid/integer (25)     │ Doesn't reject invalid integers (leading zeros, etc.)    │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ invalid/table (22)       │ Doesn't reject invalid tables ([[table] ], extend, etc.) │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ invalid/float (21)       │ Doesn't reject invalid floats (double dot, exp issues,   │
│                          │ etc.)                                                    │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ valid/key (15)           │ Numeric bare keys (1 = true) not parsed                  │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ invalid/datetime (16)    │ Doesn't validate dates (month-over, feb-30, etc.)        │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ invalid/inline-table     │ Doesn't reject invalid inline tables                     │
│ (14)                     │                                                          │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ valid/table (11)         │ Table definition/scoping issues                          │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ invalid/string (9)       │ Doesn't reject invalid strings                           │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ valid/datetime (5)       │ Lowercase z, format normalization                        │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ valid/empty (5)          │ [] instead of {} in decoder output                       │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ valid/float (3)          │ nan/inf parsed as float tokens instead of bare keys      │
├──────────────────────────┼──────────────────────────────────────────────────────────┤
│ valid/comment (5)        │ Comments without EOL                                     │
└──────────────────────────┴──────────────────────────────────────────────────────────┘

[roxblnfk]

Acceptance tests added.

Minor issues to fix:

toml/tests/Acceptance/TomlTestComplianceTest.php

Lines 29 to 249 in 1297365

	private const KNOWN_DECODER_FAILURES = [
	// Null byte in key: PHP stdClass cannot have \0 property
	'valid/key/quoted-unicode',
	// --- invalid tests: parser does not reject invalid input ---
	// Control character validation
	'invalid/control/bare-cr',
	'invalid/control/comment-cr',
	'invalid/control/comment-del',
	'invalid/control/comment-ff',
	'invalid/control/comment-lf',
	'invalid/control/comment-null',
	'invalid/control/comment-us',
	'invalid/control/multi-cr',
	'invalid/control/multi-del',
	'invalid/control/multi-lf',
	'invalid/control/multi-null',
	'invalid/control/multi-us',
	'invalid/control/rawmulti-cr',
	'invalid/control/rawmulti-del',
	'invalid/control/rawmulti-lf',
	'invalid/control/rawmulti-null',
	'invalid/control/rawmulti-us',
	'invalid/control/rawstring-del',
	'invalid/control/rawstring-lf',
	'invalid/control/rawstring-null',
	'invalid/control/rawstring-us',
	'invalid/control/string-bs',
	'invalid/control/string-del',
	'invalid/control/string-lf',
	'invalid/control/string-null',
	'invalid/control/string-us',
	// Number validation
	'invalid/integer/double-us',
	'invalid/integer/incomplete-bin',
	'invalid/integer/incomplete-hex',
	'invalid/integer/incomplete-oct',
	'invalid/integer/invalid-bin',
	'invalid/integer/invalid-oct',
	'invalid/integer/leading-zero-01',
	'invalid/integer/leading-zero-02',
	'invalid/integer/leading-zero-03',
	'invalid/integer/leading-zero-sign-01',
	'invalid/integer/leading-zero-sign-02',
	'invalid/integer/leading-zero-sign-03',
	'invalid/integer/negative-bin',
	'invalid/integer/negative-hex',
	'invalid/integer/negative-oct',
	'invalid/integer/positive-bin',
	'invalid/integer/positive-hex',
	'invalid/integer/positive-oct',
	'invalid/integer/trailing-us',
	'invalid/integer/trailing-us-bin',
	'invalid/integer/trailing-us-hex',
	'invalid/integer/trailing-us-oct',
	'invalid/integer/us-after-bin',
	'invalid/integer/us-after-hex',
	'invalid/integer/us-after-oct',
	'invalid/float/double-dot-02',
	'invalid/float/exp-dot-01',
	'invalid/float/exp-double-e-01',
	'invalid/float/exp-double-e-02',
	'invalid/float/exp-double-us',
	'invalid/float/exp-leading-us',
	'invalid/float/exp-trailing-us',
	'invalid/float/exp-trailing-us-01',
	'invalid/float/exp-trailing-us-02',
	'invalid/float/leading-dot-neg',
	'invalid/float/leading-dot-plus',
	'invalid/float/leading-zero',
	'invalid/float/leading-zero-neg',
	'invalid/float/leading-zero-plus',
	'invalid/float/trailing-exp',
	'invalid/float/trailing-exp-minus',
	'invalid/float/trailing-exp-plus',
	'invalid/float/trailing-us',
	'invalid/float/trailing-us-exp-01',
	'invalid/float/trailing-us-exp-02',
	'invalid/float/us-before-dot',
	// Table/key redefinition rules
	'invalid/table/append-with-dotted-keys-01',
	'invalid/table/append-with-dotted-keys-02',
	'invalid/table/append-with-dotted-keys-05',
	'invalid/table/duplicate-key-04',
	'invalid/table/duplicate-key-05',
	'invalid/table/duplicate-key-07',
	'invalid/table/duplicate-key-08',
	'invalid/table/llbrace',
	'invalid/table/overwrite-array-in-parent',
	'invalid/table/overwrite-bool-with-array',
	'invalid/table/redefine-02',
	'invalid/table/redefine-03',
	'invalid/table/rrbrace',
	// Inline table overwrite/duplicate rules
	'invalid/inline-table/duplicate-key-01',
	'invalid/inline-table/duplicate-key-02',
	'invalid/inline-table/duplicate-key-03',
	'invalid/inline-table/overwrite-01',
	'invalid/inline-table/overwrite-02',
	'invalid/inline-table/overwrite-03',
	'invalid/inline-table/overwrite-05',
	'invalid/inline-table/overwrite-08',
	'invalid/inline-table/overwrite-09',
	// Datetime validation
	'invalid/datetime/day-zero',
	'invalid/datetime/feb-29',
	'invalid/datetime/feb-30',
	'invalid/datetime/hour-over',
	'invalid/datetime/mday-over',
	'invalid/datetime/mday-under',
	'invalid/datetime/minute-over',
	'invalid/datetime/month-over',
	'invalid/datetime/month-under',
	'invalid/datetime/offset-minus-no-hour-minute-sep',
	'invalid/datetime/offset-overflow-hour',
	'invalid/datetime/offset-overflow-minute',
	'invalid/datetime/offset-plus-no-hour-minute-sep',
	'invalid/datetime/second-over',
	'invalid/datetime/second-trailing-dot',
	'invalid/datetime/second-trailing-dotz',
	'invalid/local-datetime/feb-29',
	'invalid/local-datetime/feb-30',
	'invalid/local-datetime/hour-over',
	'invalid/local-datetime/mday-over',
	'invalid/local-datetime/mday-under',
	'invalid/local-datetime/minute-over',
	'invalid/local-datetime/month-over',
	'invalid/local-datetime/month-under',
	'invalid/local-datetime/second-over',
	'invalid/local-time/hour-over',
	'invalid/local-time/minute-over',
	'invalid/local-time/second-over',
	'invalid/local-time/trailing-dot',
	// Encoding validation
	'invalid/encoding/bad-codepoint',
	'invalid/encoding/bad-utf8-in-comment',
	'invalid/encoding/bad-utf8-in-multiline',
	'invalid/encoding/bad-utf8-in-multiline-literal',
	'invalid/encoding/bad-utf8-in-string',
	'invalid/encoding/bad-utf8-in-string-literal',
	// Key validation
	'invalid/key/after-array',
	'invalid/key/after-table',
	// Array of tables
	'invalid/array/extending-table',
	'invalid/array/tables-01',
	'invalid/array/tables-02',
	// Spec examples
	'invalid/spec-1.1.0/common-46-0',
	'invalid/spec-1.1.0/common-46-1',
	'invalid/spec-1.1.0/common-49-0',
	'invalid/spec-1.1.0/common-50-0',
	];
	/** Known encoder round-trip failures. Each entry should be removed as the issue is fixed. */
	private const KNOWN_ENCODER_FAILURES = [
	'encoder/array/nested-inline-table',
	'encoder/array/open-parent-table',
	'encoder/comment/tricky',
	'encoder/float/exponent',
	'encoder/float/long',
	'encoder/float/max-int',
	'encoder/float/zero',
	'encoder/inline-table/empty',
	'encoder/inline-table/nest',
	'encoder/inline-table/spaces',
	'encoder/key/alphanum',
	'encoder/key/escapes',
	'encoder/key/numeric-01',
	'encoder/key/numeric-02',
	'encoder/key/numeric-04',
	'encoder/key/numeric-05',
	'encoder/key/numeric-06',
	'encoder/key/numeric-08',
	'encoder/key/quoted-dots',
	'encoder/key/quoted-unicode',
	'encoder/key/special-chars',
	'encoder/key/special-word',
	'encoder/key/start',
	'encoder/key/zero',
	'encoder/multibyte',
	'encoder/spec-1.0.0/array-of-tables-0',
	'encoder/spec-1.0.0/float-0',
	'encoder/spec-1.0.0/float-1',
	'encoder/spec-1.0.0/keys-0',
	'encoder/spec-1.0.0/keys-1',
	'encoder/spec-1.0.0/keys-3',
	'encoder/spec-1.0.0/keys-7',
	'encoder/spec-1.0.0/string-7',
	'encoder/spec-1.0.0/table-0',
	'encoder/spec-1.0.0/table-2',
	'encoder/spec-1.0.0/table-3',
	'encoder/spec-1.0.0/table-4',
	'encoder/spec-1.0.0/table-5',
	'encoder/spec-1.0.0/table-6',
	'encoder/string/escapes',
	'encoder/string/multiline-escaped-crlf',
	'encoder/string/multiline-quotes',
	'encoder/string/quoted-unicode',
	'encoder/string/raw-multiline',
	'encoder/string/unicode-escape',
	'encoder/table/array-empty',
	'encoder/table/empty',
	'encoder/table/empty-name',
	'encoder/table/keyword',
	'encoder/table/names',
	'encoder/table/names-with-values',
	'encoder/table/no-eol',
	'encoder/table/sub-empty',
	'encoder/table/whitespace',
	'encoder/table/without-super',
	];