[linear-code]

Local evaluation ignores segments that depend on other flags ($.flags.<feature>.enabled), unlike flagsmith-engine and the Flagsmith API.

Closes SDK-6. Tested by engine-test-data v3.12.1 and sdk-spec v0.7.0.

Changes

• Conditions on other flags ($.flags.<feature>.enabled, .value and .variant) are now evaluated, including chains of dependencies; circular dependencies serve the default with reason ERROR; code=CIRCULAR_DEPENDENCY.
• Environment flags apply segments that don't need an identity, instead of ignoring all segments.
• Flag results report the variant they were evaluated to.
• Flags without segment overrides report STATIC instead of DEFAULT.
• CI runs engine-test-data v3.12.1 and sdk-spec v0.7.0.

🤖 Generated with Claude Code

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[codspeed]

Merging this PR will improve performance by 38.35%

⚡ 15 improved benchmarks

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	getEnvironmentFlags[large]	16.4 s	6.7 s	×2.4
⚡	getEnvironmentFlags[small]	566.6 ms	322 ms	+75.99%
⚡	getIdentityFlagsNoTraits[small]	1,091.9 ms	685.3 ms	+59.33%
⚡	getIdentityFlagsWithIdentityOverrides[small]	1,089.6 ms	685.2 ms	+59.02%
⚡	getEnvironmentFlags[medium]	2.7 s	1.8 s	+48.63%
⚡	getIdentitySegmentsWithTraits[small]	1,301.4 ms	922.8 ms	+41.03%
⚡	getIdentityFlagsWithTraits[small]	1,326.4 ms	942.7 ms	+40.71%
⚡	getIdentityFlagsNoTraits[large]	27 s	21.3 s	+26.94%
⚡	getIdentityFlagsWithIdentityOverrides[large]	26.3 s	21 s	+25.14%
⚡	getIdentityFlagsWithTraits[large]	29.3 s	24.6 s	+19.18%
⚡	getIdentitySegmentsWithTraits[large]	27.4 s	23 s	+18.76%
⚡	getIdentityFlagsNoTraits[medium]	4.3 s	3.6 s	+18.25%
⚡	getIdentityFlagsWithIdentityOverrides[medium]	4.3 s	3.7 s	+16.66%
⚡	getIdentitySegmentsWithTraits[medium]	4.1 s	3.5 s	+16.24%
⚡	getIdentityFlagsWithTraits[medium]	4.4 s	3.9 s	+12.29%

Tip

Curious why performance improved? Comment @codspeedbot explain why performance improved on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing linear/sdk-6-enable-flag-dependency-in-the-php-server-side-sdk-3e8e (85c2f83) with main (a0d835d)}