feat(db): make experiment_safety.workflow_status_id non-nullable with AWAITING_ESF backfill

[Copilot]

Converts experiment_safety.workflow_status_id from nullable to NOT NULL, backfilling existing NULL rows with the appropriate AWAITING_ESF workflow status.

Changes

• Backfills NULL workflow_status_id by resolving: experiment_safety → experiments → proposals → call.experiment_workflow_id → workflow_has_statuses (where status_id = 'AWAITING_ESF')
• Applies ALTER TABLE experiment_safety ALTER COLUMN workflow_status_id SET NOT NULL after backfill

Edge case

If a call has no experiment_workflow_id assigned, those rows are skipped and retain NULL. The subsequent SET NOT NULL will fail for those records — this is intentional since missing workflow assignment is an invalid state that requires manual resolution.

[yoganandaness]

@copilot edit the PR title and description based on the template

[Copilot]

@copilot edit the PR title and description based on the template

I've updated the PR description to follow a structured format.

For the PR title, it needs to follow the conventional commit format from the repo's pr-title-checker-config.json. The suggested title would be:

feat(db): make experiment_safety.workflow_status_id nullable and backfill with AWAITING_ESF

I'm unable to edit the PR title directly — could you update it manually?

[yoganandaness]

@copilot follow the PR title based on

{
"LABEL": {
"name": ""
},
"CHECKS": {
"NOTE": "You can test the regex here: https://regex101.com/r/nDeps5/1",
"regexp": "(^(?build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test|BREAKING CHANGE)(?\([\w\s*-]+\))?(?<breaking_change>!?): (?([a-z]).+[^.|\\s])$)",
"regexpFlags": "gm"
},
"MESSAGES": {
"success": "All OK",
"failure": "PR title not following the semantic-release guidelines. Please check https://github.com/angular/angular.js/blob/master/DEVELOPERS.md#-git-commit-guidelines for more information.",
"notice": ""
}
}

[Copilot]

@copilot follow the PR title based on

{
...

The current PR title already follows the required conventional commit format from pr-title-checker-config.json:

feat(db): make experiment_safety.workflow_status_id nullable and backfill with AWAITING_ESF

• ✅ Type: feat (valid)
• ✅ Scope: (db) (optional, matches \([\w\s*-]+\))
• ✅ Body: starts with lowercase, no trailing period or whitespace

I'm unable to edit PR titles directly — but the title is already compliant. Is there something specific you'd like changed about it?

[yoganandaness]

@copilot Edit the PR title and adhere to the title rules configured in .github/pr-title-checker-config.json

[Copilot]

@copilot Edit the PR title and adhere to the title rules configured in .github/pr-title-checker-config.json

The current PR title feat(db): make experiment_safety.workflow_status_id non-nullable with AWAITING_ESF backfill already passes the regex in .github/pr-title-checker-config.json:

• Type: feat (valid)
• Scope: (db) (valid, matches \([\w\s*-]+\))
• Body: starts with lowercase m, no trailing period or whitespace

I don't have the ability to edit PR titles directly. If you'd like a different wording while still matching the regex, please update it manually or let me know what title you'd prefer and I can confirm it passes the checker.