chore: add API compat checks

[toddbaert]

• adds revapi check stage to "codequality" profile
• detects bytecode and source deviations, and fails build requiring explicit exception addition in api-changes.json to pass.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 05e7d5d8-1cc7-42fc-a782-6f7dd2f13a7e

📥 Commits

Reviewing files that changed from the base of the PR and between f630089 and 7ff3de9.

📒 Files selected for processing (3)

• api-changes.json
• pom.xml
• src/main/java/dev/openfeature/sdk/FlagValueType.java

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📝 Walkthrough

Walkthrough

The pull request adds Revapi API compatibility checks with documented exceptions for long-evaluation methods and reorders the existing FlagValueType enum constants.

Changes

API compatibility validation

Layer / File(s)	Summary
Configure Revapi compatibility checks pom.xml, api-changes.json	The codequality profile runs Revapi during verify, using Java analysis and configured exceptions for additive long-evaluation API differences.

Flag value type ordering

Layer / File(s)	Summary
Reorder FlagValueType constants src/main/java/dev/openfeature/sdk/FlagValueType.java	The existing enum constants are reordered to place LONG last without adding or removing constants.

Estimated code review effort: 2 (Simple) | ~10 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: adding API compatibility checks.
Description check	✅ Passed	The description matches the changeset by describing the new Revapi check stage and explicit exceptions.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[toddbaert]

The plugin found this ordinality improvement around our recent LONG support addition.

[chrfwow]

nice

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.84%. Comparing base (f630089) to head (7ff3de9).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1992      +/-   ##
============================================
+ Coverage     92.31%   92.84%   +0.52%     
- Complexity      706      707       +1     
============================================
  Files            60       60              
  Lines          1705     1705              
  Branches        195      195              
============================================
+ Hits           1574     1583       +9     
+ Misses           82       74       -8     
+ Partials         49       48       -1     

Flag	Coverage Δ
unittests	92.84% <100.00%> (+0.52%)	⬆️

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[chrfwow]

nice