fix(webapp): dedupe bulk replay triggers

[carderne]

Use {bulkActionId}:{existingTaskRunId} as idempotency key to prevent duplicate bulk replays.

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Latest commit: ac46b3f

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

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Run ID: dec5e452-c49b-45ef-89c9-2aeef9a8aba1

📥 Commits

Reviewing files that changed from the base of the PR and between 3167cdc and ac46b3f.

📒 Files selected for processing (1)

• .server-changes/bulk-replay-idempotency.md

✅ Files skipped from review due to trivial changes (1)

• .server-changes/bulk-replay-idempotency.md

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Walkthrough

ReplayTaskRunService.call now builds an idempotency key from bulkActionId and the source task run id when bulk replay options are present, otherwise it uses the prior idempotencyKey value. That computed key is forwarded to TriggerTaskService.call. The PR also adds a Vitest test covering the bulk replay key value and a server-changes note describing the bulk replay idempotency behavior.

Changes

Area	Change
apps/webapp/app/v3/services/replayTaskRun.server.ts	Computes and passes a bulk-scoped idempotency key when bulkActionId is present
apps/webapp/test/replayTaskRunIdempotency.test.ts	Adds a unit test for the bulk replay idempotency key
.server-changes/bulk-replay-idempotency.md	Adds a fix note for bulk replay idempotency

Sequence Diagram(s)

sequenceDiagram
  participant ReplayTaskRunService
  participant TriggerTaskService
  ReplayTaskRunService->>ReplayTaskRunService: compute idempotencyKey from bulkActionId + existingTaskRun.id or fallback
  ReplayTaskRunService->>TriggerTaskService: call(options.idempotencyKey)

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Related PRs: None identified.

Suggested labels: bug, testing

Suggested reviewers: None identified.

Poem
Bulk replay now keeps its name,
Each source run stays one and same.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description is far too minimal and misses the required template sections and issue reference.	Add the issue link, checklist, testing steps, changelog entry, and screenshots section, or note that screenshots are not needed.
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: deduping bulk replay triggers.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/tri-10467-bulk-replay-duplicates-runs-unsound-cursor-pagination-in

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✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.