[leom1919]

Motivation

Dead links in CHANGELOG.md (all verified 404 / "No commit found" against the live repo):

Stale commit SHAs (internal pre-mirror history) → public equivalents

Line(s)	Dead SHA	Replacement (commit message matches entry verbatim)
803, 902	91573eb9…ef9a	c274ac347ab91ed523a1da6fee3ec7d9fdb9ff8c — "fix!: rerun a failed node on resume instead of replaying it as complete"
804, 849	c5697961…2178	6f2ee9280abd5a1ebb0d35afbaf382b979d58982 — "fix!: confine GCS tool local file paths to a configured root"
805, 892	15b1392…92f8	c8bc126fd98e7fe062abce3fd62ac2bd3e96aebc — "fix!: raise SessionNotFoundError when appending to an unknown session"
906	2dc8b8d3…3718	dcdd9b8a72f6ef35f695b456c665e261e9df11ce — "fix!: retry a nested workflow when a node inside it fails"
3681	b4310727…ee8	b4310727d90421a81a8afc47e3c344646ee7aee2 — single-hex-digit typo; link text [b431072] already matches the real commit

References to issues that do not exist in this repository

• Line 914: , closes [#4506](…) — removed (issue 404)
• Line 1885: , closes [#12345](…) — removed (issue 404); likely internal-tracker references carried into the generated changelog

Relocated sample directory links

• Line 3104: samples/interactions_api → samples/models/interactions_api
• Line 3728: samples/oauth_calendar_agent → samples/integrations/oauth_calendar_agent
• Line 3775: samples/output_schema_with_tools → samples/tools/output_schema_with_tools

Total: 10 line edits in CHANGELOG.md, entry text otherwise untouched.

Verification

• Every dead SHA: GET /repos/google/adk-python/commits/{sha} → 422 "No commit found".
• Every replacement SHA: resolves via the Commits API and its message matches the changelog entry description verbatim (found via commit search).
• Both issue numbers: GET /repos/google/adk-python/issues/{n} → 404.
• All three relocated sample paths verified to exist on main (and linked from the repo's own docs).

This is a small documentation fix (exempt from the issue requirement per CONTRIBUTING.md).

AI Assistance

This PR was created with AI assistance (automated dead-link scanning of the repository's markdown files, followed by manual verification of every replacement target via the GitHub API before submission).

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[leom1919]

Follow-up: a second scan pass (after retrying the rate-limited URLs from the initial sweep) found 5 more stale commit SHAs, 2 references to nonexistent issues, and 3 relocated sample paths — all fixed in commit 57cad01. PR description updated to the full scope.