fix(h2): bind routine details to schema

[HandSonic]

Related issue

N/A - no matching issue was found.

Summary

H2 function, procedure, and trigger detail queries placed the catalog name into ROUTINE_SCHEMA / TRIGGER_SCHEMA predicates. In ordinary catalog-plus-schema connections this returned no detail or the wrong schema. This change binds those predicates to the requested schema while preserving the catalog on the returned metadata objects.

Affected surfaces

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

Verification

• Commands and results:
  • Strict JDBC schema-binding regression test: 1 passed.
  • H2 module tests after rebase: 33 passed.
  • Plugin reactor package: succeeded.
  • Fork Frontend, Backend, JavaScript CodeQL, and Java CodeQL checks: rerunning for the rebased head.
  • git diff --check origin/main...HEAD: passed.
• Manual verification: N/A - the proxy captures the real generated SQL for all three detail methods.
• UI evidence: N/A

Risk and compatibility

• Public API or stored data: No API or storage changes.
• Database or driver compatibility: H2 metadata detail predicates only; returned catalog/schema fields are unchanged.
• Network, privacy, or security: N/A.
• Community / Local / Pro boundary: Shared Community H2 plugin.
• Backward compatibility: Connections where catalog and schema happen to match retain equivalent SQL.

Reviewer map

• Start here: H2Meta.function, procedure, trigger, and H2MetaSchemaBindingTest.
• Failure condition: schema predicates contain the catalog, or list/detail schema behavior diverges.
• Rollback or disable path: Revert commit 38355c81590f6c2cec1592854483041ed52ef966; no migration is required.

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: OpenAI Codex assisted with diagnosis, implementation, automated tests, verification, and adversarial review.