Fix status check deduplication dropping checks from different workflow events

[Copilot]

When the same workflow triggers on both push and pull_request, the resulting check runs share the same name but are distinct checks. deduplicateStatusChecks keyed only on context (the check run name), collapsing e.g. 4 checks into 2.

Changes

• src/github/githubRepository.ts: Include event and workflowName in the deduplication key so checks from different trigger events or different workflows are preserved:

  const key = `${status.context}\0${status.event ?? ''}\0${status.workflowName ?? ''}`;

  Re-runs of the same check (same name + event + workflow) are still correctly deduplicated.

• src/test/github/githubRepository.test.ts: Added tests covering different events kept separate, same-event deduplication, different workflows kept separate, and pending-over-completed preference.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Fixes status check deduplication so that check runs with the same name coming from different workflow trigger events (e.g. push vs pull_request) or different workflows are preserved instead of being collapsed.

Changes:

• Update deduplicateStatusChecks to key by context + event + workflowName rather than context alone.
• Add unit tests to validate deduplication behavior across events/workflows and pending-vs-completed selection.
• Update proposed VS Code chat session typings to deprecate initialSessionOptions and introduce inputState.

Show a summary per file

File	Description
src/github/githubRepository.ts	Expands the deduplication key to include event and workflowName so distinct checks aren’t merged.
src/test/github/githubRepository.test.ts	Adds tests exercising the updated deduplication rules (events/workflows/pending preference).
src/@types/vscode.proposed.chatSessionsProvider.d.ts	Adjusts proposed API typings: deprecates initialSessionOptions and adds inputState.

Copilot's findings

• Files reviewed: 2/3 changed files
• Comments generated: 4