Migrate build to sbt 2

[stasimus]

Moves the build to sbt 2.0.10 (replaces #82). sbt 2 %% is platform aware, so JS modules now get real _sjs1 deps, not JVM jars. Added a JS JsonConfig shim, moved java.time tests to jvm, fixed look-behind regex in NameCodingStrategy, disabled coverage for JS.

Summary by CodeRabbit

• New Features
  • Added configurable BigDecimal parsing and serialization settings, including precision and scale limits, plain-format bounds, and an option to preserve a trailing zero. Settings can be customized through system properties or explicit configuration.
• Bug Fixes
  • Uppercase letters at the start of a name are now handled consistently when converting names to lowercase separator-delimited parts.

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⚙️ Run configuration

• Configuration used: Repository: evolution-gaming/coderabbit/.coderabbit.yaml
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📥 Commits

Reviewing files that changed from the base of the PR and between 3225351 and 223a8f1.

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📒 Files selected for processing (1)

• play-json-jsoniter/js/src/main/scala/play/api/libs/json/JsonConfig.scala

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📝 Walkthrough

📝 Walkthrough

Walkthrough

The changes add BigDecimal configuration for the jsoniter JS module, update uppercase splitting in generic name coding, and revise SBT build and release verification settings.

Changes

BigDecimal Configuration

Layer / File(s)	Summary
BigDecimal configuration and settings play-json-jsoniter/js/.../JsonConfig.scala	Adds parsing and serialization configuration types, defaults, system-property overrides, and factory methods. Invalid property conversions use defaults; unrecognized math-context values select decimal128.

Name Coding Strategy

Layer / File(s)	Summary
Uppercase character splitting play-json-generic/src/main/scala/com/evolution/playjson/generic/NameCodingStrategy.scala	The lower-case separator strategy now splits before uppercase characters, including at the start of a string.

SBT Build and Release

Layer / File(s)	Summary
Build and cross-platform settings project/build.properties, build.sbt	Updates the SBT version and build aliases, renames the root project, configures JS coverage and version-policy exclusions, and limits specified jsoniter test dependencies to Scala 2 JVM builds.
Release verification command .github/workflows/release.yml	Sets the release verification command to cleanFull; +check; +all testFull package.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Other

Suggested reviewers: mr-git

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Merge Risk: 🔵 Low · up to 32253

JavaScript users may follow an unusable configuration instruction. Correct the guidance; the change is otherwise mergeable on the supplied evidence.

Pre-merge checks | 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: migrating the build to sbt 2.0.10.
Docstring Coverage		No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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• 🪄 Fix CodeRabbit comments on this PR

🤖 Prompt to fix review comments

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Inline comments:
Review comments at
@play-json-jsoniter/js/src/main/scala/play/api/libs/json/JsonConfig.scala:
- Line 166: Remove the JVM-only override comment from JsonConfig, or replace it
with the supported JavaScript configuration path; do not direct JavaScript users
to JacksonJson.setConfig().

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: Repository: evolution-gaming/coderabbit/.coderabbit.yaml
• Review profile: CHILL
• Plan: Advanced
• Run ID: 19d2eaab-8656-4c10-b59f-ffb2b495d2a2

📥 Commits

Reviewing files that changed from the base of the PR and between 59d51cf and 3225351.

📒 Files selected for processing (8)

• .github/workflows/release.yml
• build.sbt
• play-json-generic/src/main/scala/com/evolution/playjson/generic/NameCodingStrategy.scala
• play-json-jsoniter/js/src/main/scala/play/api/libs/json/JsonConfig.scala
• play-json-jsoniter/jvm/src/test/scala/com/evolution/playjson/jsoniter/JavaTimeFormatsSpec.scala
• play-json-jsoniter/jvm/src/test/scala/com/evolution/playjson/jsoniter/JsoniterSpec.scala
• play-json-jsoniter/jvm/src/test/scala/com/evolution/playjson/jsoniter/TestData.scala
• project/build.properties

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