Fix deadline serialization, repr, and prune edge cases - #70421
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Fix deadline serialization, repr, and prune edge cases#70421seanghaeli wants to merge 5 commits into
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Split out of apache#68919 per review: decoder __class_path routing, clear error for missing __class_path, repr guards for severed dagrun and dict-shaped interval, and prune guard for missed deadlines.
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July 25, 2026 00:14
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Split out of #68919 per review. Edge-case fixes in the deadline model and serialization paths:
__class_pathahead ofreference_type(custom references can share a builtin's class name), and a reference with no importable__class_pathraises a clear error instead of aKeyError.__repr__onDeadlineandDeadlineAlertnever raises (guards thedagrunrelationship post-cascade-delete and the dict-shaped interval).prune_deadlinesexcludes missed deadlines so a missed deadline's queued callback is not cascade-deleted.