fix(sql): run the browsed schema, and reorg Db2 indexes by catalog name

[huyplb]

Summary

• Choosing a schema connection checks that one destination. A finished statement starts the next query, and schema. completion lists tables (with aliases) and functions.
• Expanding a table shows columns only, and the blueprint button is labeled Edit. Access Diff explains the generate-only steps.
• Db2 index reorg folds the typed schema to the uppercase catalog name, then runs RUNSTATS so the fragmentation percentage can move.

Test plan

• Index fragmentation and schema-completion unit tests
• Full dialect e2e sweep (running locally against the app)

Made with Cursor

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Note

Medium Risk
Changes destination selection, SQL insertion/completion behavior, and execute error paths; Db2 defrag now issues RUNSTATS with folded identifiers—important for ops but localized to SQL editor and index maintenance.

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(requestId: ea7f021a-236f-4381-bf74-e9292e690e80)