[josecolella]

Closes #300. Merge after #360 and #361: the claim depends on both. 0.8.0 shipped before them, so the first release that meets the claim is the one after #361 (0.8.1).

Moves the README's specification badge from v0.8.0 to v0.9.0, the version the spec submodule is pinned to (d5b0a73).

Compliance summary

A compliance audit checked every requirement in sections 1–6 and Appendix A on main (9e166fe), reading each test's body rather than its label. Once #361 (behavior fixes) and #360 (missing tests) merge, every MUST and MUST NOT is met or n/a. The one exception is 1.4.10, which we read with the two calls listed below.

Section	Fixed in #361	Tests added in #360
1 Flag evaluation API	1.4.15.1, 1.6.1, 1.6.2	1.3.1.1, 1.6.2, 1.7.6
2 Providers	2.8.5.1	2.3.1 (docs), 2.3.2
3 Evaluation context	—	3.1.2, 3.1.4
4 Hooks	4.1.3, 4.1.4.1, 4.2.2.1, 4.3.8, 4.4.3, 4.4.4	4.2.1, 4.3.2, 4.4.2, 4.4.6, 4.5.2
5 Events	5.2.5	—
6 Tracking	6.1.1.1	6.1.3

For every other MUST, the audit found the implementing code and a test that exercises it.

n/a, by condition:

• Static-context conditions (1.3.2, 1.4.2, 1.7.2, 3.2.2, 3.2.4, 3.3.2, 4.3.3, 5.3.4, 6.1.2 and their sub-requirements). This is a dynamic-context SDK.
• 1.4.4 and 2.2.8. Ruby has no generics.
• 4.3.9.1. finally isn't a reserved word in Ruby.
• Multi-Provider items in Appendix A. The gem doesn't ship a Multi-Provider; see Multi-Provider in the SDK (spec Appendix A) #344.

How we read 1.4.10 (MUST NOT throw):

• A default value of the wrong type raises ArgumentError. We treat it as Ruby's equivalent of a compile-time type error.
• Exceptions outside StandardError and NotImplementedError propagate. These include Interrupt, SignalException, SystemExit, NoMemoryError, SystemStackError and ScriptError subclasses such as LoadError. Rescuing them would hide process-level failures and signals.

Other calls worth knowing:

• 5.3.5: a lifecycle event emitted on the provider's init thread updates the status immediately, so set_provider_and_wait can return READY from inside a handler (1.1.2.4). Each event's status is still recorded before its own handlers run.
• Not met, but SHOULD-level and non-blocking: 1.4.11 (partial), 1.4.12 and 1.8.4 (partial). 1.8.4 is detected only for providers that include EventEmitter.

Deferred from #300:

• Multi-Provider: Multi-Provider in the SDK (spec Appendix A) #344.
• The contrib OTel hook: OTel hooks: align error attributes and exception recording with spec Appendix D ruby-sdk-contrib#268.
• Contrib providers freezing their ProviderMetadata, which saves a copy on every hooked evaluation: a contrib follow-up.

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Reviewing files that changed from the base of the PR and between 9e166fe and e93bca6.

📒 Files selected for processing: 1

• README.md

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.79%. Comparing base (9e166fe) to head (e93bca6).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #362   +/-   ##
=======================================
  Coverage   99.79%   99.79%           
=======================================
  Files          34       34           
  Lines         966      966           
=======================================
  Hits          964      964           
  Misses          2        2           

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🔵 Needs a closer look

A maintainer must verify that prerequisite PRs #360 and #361 have merged before approving the compliance claim.

No open issues 🎉

What changed in this PR

Updates the Ruby SDK’s documented specification version to v0.9.0 as the final step in the compliance work tracked by #300. The claim depends on #360 and #361 merging first.

Changes:

• Updates the specification badge from v0.8.0 to v0.9.0.
• Points the badge link to the corresponding specification release; no runtime code changes.

File	Description
README.md	Updates the specification badge version and release link.

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