feat(seer): Read Seer project preferences from Sentry DB in Sentry endpoints

[srest2021]

Fixes AIML-2611

Depends on #111591

Behind organizations:seer-project-settings-read-from-sentry, read Seer project preferences directly from ProjectOption + SeerProjectRepository instead of proxying to the Seer API. Part of Phase 3 of the Seer project preferences migration.

Updated call sites:

• autofix_agent.py — trigger_coding_agent_handoff
• coding_agent.py — _launch_agents_for_repos
• issue_summary.py — get_automation_stopping_point
• on_completion_hook.py — _get_handoff_config_if_applicable, _clear_handoff_preference
• utils.py — has_project_connected_repos
• project_seer_preferences.py — GET
• organization_autofix_automation_settings.py — _serialize_projects_with_settings (GET), POST
• tasks/seer/autofix.py — configure_seer_for_existing_org
• tasks/seer/context_engine_index.py — index_repos
• seer_rpc.py — trigger_coding_agent_launch
• autofix.py — _resolve_project_preference

Note: Generally I chose not to catch DB errors. We shouldn't be getting any. We'll roll out gradually and if something happens we should get a Sentry exception so I can fix it.

[linear-code]

AIML-2611 Update Sentry endpoints to read from Sentry DB

[github-actions]

Backend Test Failures

Failures on 4c0c5ff in this run:

tests/sentry/seer/endpoints/test_project_seer_preferences.py::ProjectSeerPreferencesEndpointTest::test_api_invalid_response_data — log

tests/sentry/seer/endpoints/test_project_seer_preferences.py:236: in test_api_invalid_response_data
    assert response.status_code == 200
E   assert 500 == 200
E    +  where 500 = <Response status_code=500, "application/json">.status_code

tests/sentry/seer/endpoints/test_project_seer_preferences.py::ProjectSeerPreferencesEndpointTest::test_no_preferences_found — log

tests/sentry/seer/endpoints/test_project_seer_preferences.py:219: in test_no_preferences_found
    assert response.status_code == 200
E   assert 500 == 200
E    +  where 500 = <Response status_code=500, "application/json">.status_code

[github-actions]

Backend Test Failures

Failures on b30a4bc in this run:

tests/sentry/seer/autofix/test_autofix_on_completion_hook.py::TestAutofixOnCompletionHookHandoff::test_get_handoff_config_reads_from_sentry_db — log

[gw1] linux -- Python 3.13.1 /home/runner/work/sentry/sentry/.venv/bin/python3
tests/sentry/seer/autofix/test_autofix_on_completion_hook.py:602: in test_get_handoff_config_reads_from_sentry_db
    result = AutofixOnCompletionHook._get_handoff_config_if_applicable(
E   TypeError: AutofixOnCompletionHook._get_handoff_config_if_applicable() got an unexpected keyword argument 'group_id'

tests/sentry/seer/endpoints/test_organization_autofix_automation_settings.py::OrganizationAutofixAutomationSettingsSentryDbEndpointTest::test_post_append_resolves_repo_id_for_existing_repos — log

[gw1] linux -- Python 3.13.1 /home/runner/work/sentry/sentry/.venv/bin/python3
tests/sentry/seer/endpoints/test_organization_autofix_automation_settings.py:1114: in test_post_append_resolves_repo_id_for_existing_repos
    assert response.status_code == 204
E   assert 500 == 204
E    +  where 500 = <Response status_code=500, "application/json">.status_code

tests/sentry/seer/autofix/test_autofix_agent.py::TestTriggerCodingAgentHandoff::test_trigger_coding_agent_handoff_reads_from_sentry_db — log

[gw1] linux -- Python 3.13.1 /home/runner/work/sentry/sentry/.venv/bin/python3
tests/sentry/seer/autofix/test_autofix_agent.py:914: in test_trigger_coding_agent_handoff_reads_from_sentry_db
    result = trigger_coding_agent_handoff(
E   TypeError: trigger_coding_agent_handoff() missing 1 required positional argument: 'referrer'

tests/sentry/seer/endpoints/test_organization_autofix_automation_settings.py::OrganizationAutofixAutomationSettingsSentryDbEndpointTest::test_get_reads_project_preferences — log

[gw0] linux -- Python 3.13.1 /home/runner/work/sentry/sentry/.venv/bin/python3
tests/sentry/seer/endpoints/test_organization_autofix_automation_settings.py:947: in test_get_reads_project_preferences
    assert response.status_code == 200
E   assert 500 == 200
E    +  where 500 = <Response status_code=500, "application/json">.status_code

tests/sentry/seer/endpoints/test_organization_autofix_automation_settings.py::OrganizationAutofixAutomationSettingsSentryDbEndpointTest::test_post_creates_seer_project_repository — log

[gw0] linux -- Python 3.13.1 /home/runner/work/sentry/sentry/.venv/bin/python3
tests/sentry/seer/endpoints/test_organization_autofix_automation_settings.py:1037: in test_post_creates_seer_project_repository
    assert response.status_code == 204
E   assert 500 == 204
E    +  where 500 = <Response status_code=500, "application/json">.status_code

[github-actions]

Backend Test Failures

Failures on 0f6670f in this run:

tests/sentry/seer/autofix/test_autofix_utils.py::TestHasProjectConnectedRepos::test_falls_back_to_code_mappings_on_api_error — log

[gw0] linux -- Python 3.13.1 /home/runner/work/sentry/sentry/.venv/bin/python3
tests/sentry/seer/autofix/test_autofix_utils.py:607: in test_falls_back_to_code_mappings_on_api_error
    result = has_project_connected_repos(self.organization, self.project)
src/sentry/seer/autofix/utils.py:843: in has_project_connected_repos
    if not has_repos:
E   UnboundLocalError: cannot access local variable 'has_repos' where it is not associated with a value

[cursor]

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