fix(autofix): Ignore default-valued options in has_configured_options check

Projects with autofix_automation_tuning explicitly set to its default
(OFF) — e.g. by set_default_project_autofix_automation_tuning at
project creation — were incorrectly treated as having configured
preferences. This caused read_preference_from_sentry_db to return a
SeerProjectPreference with empty repositories instead of None,
skipping the fallback path that populates repos from code mappings.

Compare option values against their registered defaults so only
meaningfully configured options count.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: srest2021

src/sentry/seer/autofix/utils.py

@@ -750,7 +750,8 @@ def read_preference_from_sentry_db(project: Project) -> SeerProjectPreference |
     ]
 
     has_configured_options = any(
-        ProjectOption.objects.isset(project, key) for key in SEER_PROJECT_PREFERENCE_OPTION_KEYS
+        project.get_option(key) != projectoptions.get_well_known_default(key, project=project)
+        for key in SEER_PROJECT_PREFERENCE_OPTION_KEYS
     )
     if not repo_definitions and not has_configured_options:
         return None
@@ -797,6 +798,8 @@ def bulk_read_preferences_from_sentry_db(
     for project in projects:
         has_configured_options = any(
             project_options[key][project.id] is not None
+            and project_options[key][project.id]
+            != projectoptions.get_well_known_default(key, project=project)
             for key in SEER_PROJECT_PREFERENCE_OPTION_KEYS
         )
         if project.id not in repo_definitions_by_project and not has_configured_options:

tests/sentry/seer/autofix/test_autofix_utils.py

@@ -1342,6 +1342,15 @@ def test_autofix_automation_tuning_alone_creates_preference(self):
         assert result.autofix_automation_tuning == AutofixAutomationTuningSettings.HIGH
         assert result.repositories == []
 
+    def test_autofix_automation_tuning_default_alone_returns_none(self):
+        """Setting autofix_automation_tuning to its default (OFF) should not count as configured."""
+        self.project.update_option(
+            "sentry:autofix_automation_tuning", AutofixAutomationTuningSettings.OFF
+        )
+
+        result = read_preference_from_sentry_db(self.project)
+        assert result is None
+
     def test_project_with_stopping_point_only(self):
         self.project.update_option("sentry:seer_automated_run_stopping_point", "open_pr")
 
@@ -1539,6 +1548,15 @@ def test_autofix_automation_tuning_defaults_to_off(self):
         assert pref is not None
         assert pref.autofix_automation_tuning == AutofixAutomationTuningSettings.OFF
 
+    def test_autofix_automation_tuning_default_alone_returns_none(self):
+        """Setting autofix_automation_tuning to its default (OFF) should not count as configured."""
+        self.project1.update_option(
+            "sentry:autofix_automation_tuning", AutofixAutomationTuningSettings.OFF
+        )
+
+        result = bulk_read_preferences_from_sentry_db(self.organization.id, [self.project1.id])
+        assert result[self.project1.id] is None
+
     def test_wrong_organization_excluded(self):
         other_org = self.create_organization()
         SeerProjectRepository.objects.create(