feat(seer): Add dual-read helpers for Seer project preferences from Sentry DB

[srest2021]

relates to AIML-2611, AIML-2610

Add read_preference_from_sentry_db() and bulk_read_preferences_from_sentry_db() helpers to read Seer project preferences directly from Sentry DB instead of Seer API. This is the foundation for cutting over reads behind the organizations:seer-project-settings-read-from-sentry feature flag.

We don't actually use the helpers in this PR. WIP followup PR: #111594

Extra

We return None if a project is unconfigured. Matching Seer's behavior (single, bulk), "unconfigured" means we don't have any SeerProjectRepository rows and none of the project options are set.

We use project.get_option and ProjectOptions.objects.isset for single reads, and ProjectOption.objects.get_value_bulk_id for bulk read. Why:

1. project.get_option and ProjectOptions.objects.isset use cache. For a single project we want to check the cache first.
2. ProjectOption.objects.get_value_bulk_id is one DB query. For our bulk use cases (OrganizationAutofixAutomationSettingsEndpoint get/post, configure_seer_for_existing_org) where we may be querying many projects for a single org, we do max 5 option queries, one for each project option. It also returns None for missing options so we can easily tell which projects have configured options and which don't.

[linear-code]

AIML-2611 Update Sentry endpoints to read from Sentry DB

AIML-2610 Implement SeerProjectSettingsService RPC

[srest2021]

(Private for now since idk if we'll have any other use cases where this callable arg will be helpful or relevant)

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

Autofix Details

Bugbot Autofix prepared a fix for the issue found in the latest run.

• ✅ Fixed: Bulk read bypasses epoch-aware default resolution
  • Updated bulk preference fallback to use lookup_well_known_key(key).get_default(project) so bulk reads resolve epoch-aware defaults exactly like project.get_option.

Or push these changes by commenting:

@cursor push 5cf12c1e45

Preview (5cf12c1e45)

diff --git a/src/sentry/seer/autofix/utils.py b/src/sentry/seer/autofix/utils.py
--- a/src/sentry/seer/autofix/utils.py
+++ b/src/sentry/seer/autofix/utils.py
@@ -787,7 +787,7 @@
         def get_project_option(key: str) -> Any:
             value = project_options[key][project.id]
             if value is None:
-                return projectoptions.lookup_well_known_key(key).default
+                return projectoptions.lookup_well_known_key(key).get_default(project)
             return value
 
         result[project.id] = SeerProjectPreference(

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[srest2021]

@cursor push 5cf12c1

[JoshFerge]

looks good!

[cursor]

Cursor Bugbot has reviewed your changes and found 2 potential issues.

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^{Reviewed by Cursor Bugbot for commit 92dd7e4. Configure here.}