docs(agents): correct the auth-strategy config key (config.authStrategy)

[coderdan]

One-line fix: AGENTS.md's identity-aware-encryption bullet named the config key config.strategy; the real ClientConfig key is authStrategy (packages/stack/src/types.ts:145, and the re-export comment in packages/stack/src/index.ts says the same).

Caught while re-reviewing #642 — its examples use the correct key; the drift was in the meta file. No changeset: AGENTS.md is repo-internal (not shipped in any tarball).

https://claude.ai/code/session_01MxTTPaPP16m6br7Hoab94w

Summary by CodeRabbit

• Documentation
  • Updated identity-aware encryption guidance to use the correct config.authStrategy setting when authenticating with OIDC federation.
  • Clarified the existing chaining and lock-context requirements.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 7744caf

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: b0e85d0b-de94-4542-9263-311bdc4087e8

📥 Commits

Reviewing files that changed from the base of the PR and between 9bf2a56 and 7744caf.

📒 Files selected for processing (1)

• AGENTS.md

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📝 Walkthrough

Walkthrough

The identity-aware encryption documentation now references config.authStrategy when configuring OidcFederationStrategy; chaining and lock-context requirements remain unchanged.

Changes

Identity-aware encryption documentation

Layer / File(s)	Summary
Authentication configuration reference AGENTS.md	Updates the OidcFederationStrategy authentication reference from config.strategy to config.authStrategy.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Suggested reviewers: calvinbrewer

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the doc-only fix to the auth strategy config key in AGENTS.md.
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 unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/agents-md-authstrategy-key

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