feat(processor): optimize coordination and adopt Blue Language rc16

[piotr-blue]

Summary

• optimize sequential workflow and Compute execution with bounded plan caches, immutable execution state, and frozen patch handoff
• adopt blue.language:blue-language-java:3.1.0-rc.16 from Maven Central
• remove local Language dependency overrides and unrelated external-consumer wiring
• add deterministic metrics, differential, fixture, memory, binary-compatibility, and Java 8 bytecode verification
• harden the build for Gradle 10 and reproducible source/publication artifacts

Verification

All project-local checks pass:

• main suite: 368 tests, 0 failures
• workflow-plan differential suite: 124 tests, 0 failures
• complex-fixture integration suite: 55 tests, 0 failures
• memory integration suite: 17 tests, 0 failures
• metrics artifact suite: 1 test, 0 failures
• binary compatibility: 26/26 public API classes
• Java 8 bytecode: 84 classes, maximum major version 52
• Maven staging and JMH compilation passed
• metrics, POM, and source archive are reproducible byte-for-byte
• published POM contains Blue Language 3.1.0-rc.16 with compile scope

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Preserve authored overlays for resolved static patches

When a static Update Document step is inherited/resolved, properties.get("val") can be a non-strict resolved FrozenNode whose toNode() includes fields or metadata inherited from the patch-entry/value type. The previous frozen changeset path minimized non-strict items before building the patch, but this new static-plan path freezes value.toNode() directly, so inherited static patches can write resolved-only content or fail canonicalization instead of applying the authored overlay. Reuse the merge-reversal/minimization step before caching the template.

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[chatgpt-codex-connector]

Advertise the rc5 artifact in install instructions

For users copying the Gradle snippet after this change, this coordinate still points at 2.0.0-rc.4 even though the project metadata in .cz.toml is 2.0.0-rc.5 and the rest of this commit documents the new rc16-based artifact. That makes the README install instructions pull the previous release rather than the artifact containing these fixes and dependency upgrades.

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