Add performance benchmark harness

[josiahking]

Summary

Adds an isolated performance benchmark suite for EvolvePHP 2 without changing production framework behavior.

The benchmark harness covers application boot, service-container resolution, execution lifecycle, persistent-style sequential execution, routing, middleware dispatch, and full HTTP kernel execution.

It also adds environment fingerprinting, normalized benchmark results, local-result isolation, correctness checks, and benchmark-specific dependency management.

Benchmark fixture construction is kept outside measured hot paths so route matching and container resolution reflect the operations being measured rather than setup cost. First-resolution service benchmarks also use single-revolution, zero-warmup execution so they retain true first-resolution semantics.

Validation

• Benchmark suite: 15 tests, 70 assertions
• Main test suite: 675 tests, 2445 assertions, 1 skipped
• Architecture and documentation checks: 210 tests, 9583 assertions
• Static analysis and coding-style checks pass
• Application skeleton validation passes
• Package release and consumer validation pass
• Supply-chain checks pass
• Deterministic package split validation passes

The benchmark results produced during development are environment-specific and are not presented as cross-framework performance claims.