feat(sql-editor): add output history retention option

[openai0229]

Related issue

Closes #2269

Summary

• Add a Keep history output option to the execution console menu, enabled by default and persisted per edition/runtime.
• When disabled, retain only the newest SQL execution output across Web and Desktop runtimes.
• Prevent late events from superseded executions from restoring older output, including Desktop requests whose first event arrives out of order.
• Synchronize the preference across mounted editors and bound superseded-execution tracking to 200 entries.

Affected surfaces

• Frontend / Web
• Backend / API / Storage
• Database plugin / Driver
• JCEF / Desktop packaging
• CI / Build / Release
• Documentation only

Verification

• Commands and results:
  • yarn test:execution-console - passed
  • yarn test:sql-execution-log - passed
  • yarn test:i18n - passed
  • yarn lint - passed
  • yarn build:web:community --app_version=5.3.0 - passed
  • git diff --check - passed
• Manual verification: N/A - no local runtime was started.
• UI evidence: N/A - no local runtime was started.

Risk and compatibility

• Public API or stored data: Adds one client-side localStorage preference key; no public API or server-side data changes.
• Database or driver compatibility: N/A - execution and driver behavior are unchanged.
• Network, privacy, or security: N/A - no network, privacy, or security behavior changes.
• Community / Local / Pro boundary: Community frontend only; the preference key remains scoped by edition and runtime.
• Backward compatibility: Existing behavior is preserved by default because history retention defaults to enabled.

Reviewer map

• Start here: chat2db-community-client/src/service/sqlExecutionLog.ts, then src/pages/main/workspace/components/SQLExecute/index.tsx.
• Failure condition: Enabled mode loses prior output, disabled mode retains more than the newest execution, or a late superseded event restores older output.
• Rollback or disable path: Revert this PR; users can also leave the new option enabled to preserve the prior behavior.

Contributor declaration

• I linked the Issue that defines this change.
• I tested the affected behavior and reported the actual results above.
• I did not include credentials, private data, or generated build output.
• I disclosed substantial AI assistance below, or this PR contains no substantial AI-generated code.

AI assistance: Substantial AI assistance was used for implementation, tests, edge-case analysis, and review. The final diff and verification results were reviewed before submission.