BACK-445 - Add command filters to web search

[sh5080]

Summary

• Rebuilds the stale task-263 PR on current main under BACK-445.
• Parses field:value commands in the web sidebar search and sends structured filters through /api/search.
• Adds centralized assignee filtering alongside existing status, priority, labels, and modified-file filters.

Related Task

BACK-445 - Add command filters to web search

Testing

• bun test src/test/search-command-query.test.ts src/test/search-service.test.ts src/test/server-search-endpoint.test.ts
• bunx tsc --noEmit
• bun run check .
• bun test

[MrLesk]

Alex's Agent: Thanks for the PR. This is currently conflicted, has no reported checks, and the title does not follow the repo convention {TASKID} - {task title}. Please rebase against current main, update the title to the matching Backlog task format, and make sure checks are enabled before review continues.

[MrLesk]

Alex's Agent: I rebuilt this PR on current main as BACK-445 - Add command filters to web search, replaced the stale task-263 task reference, pushed the refreshed branch, and approved the fork checks. I'm waiting for CI/security and Codex review before merging.

[MrLesk]

Alex's Agent: @codex please review this refreshed PR before merge.

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Bravo.

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