feat(issue-detection): Add org-level scheduling for AI issue detection

[roggenkemper]

Replace the hourly per-project dispatch with a 15-minute bucketed dispatcher that spreads org dispatches across time slots using hashing. Each org is assigned to a deterministic slot and dispatched once per full cycle.

[github-actions]

Backend Test Failures

Failures on 44421d5 in this run:

tests/sentry/tasks/test_llm_issue_detection.py::TestRunLLMIssueDetection::test_dispatches_orgs_in_current_slot — log

[gw0] linux -- Python 3.13.1 /home/runner/work/sentry/sentry/.venv/bin/python3
src/sentry/features/manager.py:217: in _get_feature_class
    return self._feature_registry[name]
E   KeyError: 'organizations:ai-issue-detection'

During handling of the above exception, another exception occurred:
src/sentry/testutils/helpers/features.py:72: in features_override
    feature = features.get(name, None)
src/sentry/features/manager.py:227: in get
    cls = self._get_feature_class(name)
src/sentry/features/manager.py:219: in _get_feature_class
    raise FeatureNotRegistered(name)
E   sentry.features.exceptions.FeatureNotRegistered: The "organizations:ai-issue-detection" feature has not been registered. Ensure that a feature has been added to sentry.features.default_manager

During handling of the above exception, another exception occurred:
tests/sentry/tasks/test_llm_issue_detection.py:70: in test_dispatches_orgs_in_current_slot
    run_llm_issue_detection()
.venv/lib/python3.13/site-packages/taskbroker_client/task.py:92: in __call__
    return self._func(*args, **kwargs)
src/sentry/tasks/llm_issue_detection/detection.py:292: in run_llm_issue_detection
    if not features.has("organizations:ai-issue-detection", org):
/opt/hostedtoolcache/Python/3.13.1/x64/lib/python3.13/unittest/mock.py:1167: in __call__
    return self._mock_call(*args, **kwargs)
/opt/hostedtoolcache/Python/3.13.1/x64/lib/python3.13/unittest/mock.py:1171: in _mock_call
    return self._execute_mock_call(*args, **kwargs)
/opt/hostedtoolcache/Python/3.13.1/x64/lib/python3.13/unittest/mock.py:1232: in _execute_mock_call
    result = effect(*args, **kwargs)
src/sentry/testutils/helpers/features.py:74: in features_override
    raise ValueError("Unregistered feature flag: %s", repr(name))
E   ValueError: ('Unregistered feature flag: %s', "'organizations:ai-issue-detection'")

tests/sentry/tasks/test_llm_issue_detection.py::TestRunLLMIssueDetection::test_skips_orgs_with_hidden_ai — log

[gw0] linux -- Python 3.13.1 /home/runner/work/sentry/sentry/.venv/bin/python3
src/sentry/features/manager.py:217: in _get_feature_class
    return self._feature_registry[name]
E   KeyError: 'organizations:ai-issue-detection'

During handling of the above exception, another exception occurred:
src/sentry/testutils/helpers/features.py:72: in features_override
    feature = features.get(name, None)
src/sentry/features/manager.py:227: in get
    cls = self._get_feature_class(name)
src/sentry/features/manager.py:219: in _get_feature_class
    raise FeatureNotRegistered(name)
E   sentry.features.exceptions.FeatureNotRegistered: The "organizations:ai-issue-detection" feature has not been registered. Ensure that a feature has been added to sentry.features.default_manager

During handling of the above exception, another exception occurred:
tests/sentry/tasks/test_llm_issue_detection.py:121: in test_skips_orgs_with_hidden_ai
    run_llm_issue_detection()
.venv/lib/python3.13/site-packages/taskbroker_client/task.py:92: in __call__
    return self._func(*args, **kwargs)
src/sentry/tasks/llm_issue_detection/detection.py:292: in run_llm_issue_detection
    if not features.has("organizations:ai-issue-detection", org):
/opt/hostedtoolcache/Python/3.13.1/x64/lib/python3.13/unittest/mock.py:1167: in __call__
    return self._mock_call(*args, **kwargs)
/opt/hostedtoolcache/Python/3.13.1/x64/lib/python3.13/unittest/mock.py:1171: in _mock_call
    return self._execute_mock_call(*args, **kwargs)
/opt/hostedtoolcache/Python/3.13.1/x64/lib/python3.13/unittest/mock.py:1232: in _execute_mock_call
    result = effect(*args, **kwargs)
src/sentry/testutils/helpers/features.py:74: in features_override
    raise ValueError("Unregistered feature flag: %s", repr(name))
E   ValueError: ('Unregistered feature flag: %s', "'organizations:ai-issue-detection'")

[roggenkemper]

bugbot run

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