refactor: rename internal promptId/PromptId to jobId/JobId (#8730)

## Summary

Rename all internal TypeScript usage of legacy `promptId`/`PromptId`
naming to `jobId`/`JobId` across ~38 files for consistency with the
domain model.

## Changes

- **What**: Renamed internal variable names, type aliases, function
names, class getters, interface fields, and comments from
`promptId`/`PromptId` to `jobId`/`JobId`. Wire-protocol field names
(`prompt_id` in Zod schemas and `e.detail.prompt_id` accesses) are
intentionally preserved since they match the backend API contract.

## Review Focus

- All changes are pure renames with no behavioral changes
- Wire-protocol fields (`prompt_id`) are deliberately unchanged to
maintain backend compatibility
- Test fixtures updated to use consistent `job-id` naming

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8730-refactor-rename-internal-promptId-PromptId-to-jobId-JobId-3016d73d3650813ca40ce337f7c5271a)
by [Unito](https://www.unito.io)

src/scripts/changeTracker.ts

@@ -339,7 +339,7 @@ export class ChangeTracker {
     api.addEventListener('executed', (e: CustomEvent<ExecutedWsMessage>) => {
       const detail = e.detail
       const workflow =
-        useExecutionStore().queuedPrompts[detail.prompt_id]?.workflow
+        useExecutionStore().queuedJobs[detail.prompt_id]?.workflow
       const changeTracker = workflow?.changeTracker
       if (!changeTracker) return
       changeTracker.nodeOutputs ??= {}