docs: reconcile CHANGELOG — 2026-W17

[the-care-taker]

Documentation reconciliation

This PR updates CHANGELOG.md to capture the following merged pull requests:

• chore(caretaker): enable fleet-registry heartbeat with OAuth2 #46: chore(caretaker): enable fleet-registry heartbeat with OAuth2
• fix(maintainer): rename dispatch mode upgrade-only → upgrade #37: fix(maintainer): rename dispatch mode upgrade-only → upgrade
• chore: upgrade caretaker to v0.10.0 #34: chore: upgrade caretaker to v0.10.0

Proposed changelog entry

## [2026-W17] — 2026-04-25

- upgrade caretaker to v0.10.0 (#34)
- rename dispatch mode upgrade-only → upgrade (#37)
- enable fleet-registry heartbeat with OAuth2 (#46)

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[github-actions]

@claude caretaker is requesting a full code review for this PR.

Repo: ianlintner/python_dsa · PR: #56
Routing reason: score=0 [low-complexity] → inline

Please review this pull request for:

• Correctness and logic errors
• Security vulnerabilities or unsafe patterns
• API contract and backward-compatibility concerns
• Test coverage gaps
• Any blocking issues before merge

Post a review comment summary and inline comments where applicable.

Delegated by caretaker's PRReviewerAgent via ClaudeCodeExecutor hand-off.