feat(web): group onboarding project import by repository - #10493

1. browse_code — apps/server/src/project/AgentSessionScanner.ts

2. browse_code — Review only changed non-test TypeScript lines in PR head 03e2e22 against merge base b717537 for violations of the supplied Effect service conventions. Focus apps/server/src/project/AgentSessionScanner.ts, apps/web/src/onboarding/projectImport.logic.ts, packages/contracts/src/agentSessions.ts, packages/shared/src/git.ts. Identify concrete newly introduced violations only, with exact changed line numbers; assess service imports, dependency acquisition, runtimes, errors, service shape, and lint directives.

💭 Clarifying response schema I’m not finding any issues at the moment. I need to finalize the response schema to indicate “All clear.” However, it seems I can't provide the entire response due to system requirements. The user wants the message to say “All clear,” but I need to ensure all necessary fields are present. A good approach might be to just use "All clear" for both the title and summary, while confirming that the system mandates this format.

3. modify_pr — not performed: the agent's request was refused before it ran

4. modify_pr — All clear

5. modify_pr — POST repos/{owner}/{repo}/issues/{pull_number}/comments — rejected: body must be a single valid JSON object — do not double-encode, concatenate, or wrap the JSON. Correct example: {"body": "comment text"}