chore(main): release 0.29.0 #489

Job	Run time
Dashboard scenario snapshots	37s
Coverage	1m 26s
Python 3.11	1m 16s
Python 3.13	1m 10s
Template gates	54s
Python 3.12	1m 15s
JavaScript dashboard	11s
Validate runtime lock / Validate hash-pinned runtime dependencies	38s
Validate vendored assets / Validate vendored third-party assets	37s
	8m 4s

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