fix: proc visibility

[tianzhou]

Fix #34

[Copilot]

Pull Request Overview

This PR fixes procedure and function visibility issues by changing the SQL queries to use p.prosrc instead of r.routine_definition from the information schema. This addresses cases where routine_definition returns NULL for procedures/functions owned by restricted roles, while p.prosrc provides reliable access to the source code.

Key changes:

• Updated SQL queries to use pg_proc.prosrc instead of information_schema.routines.routine_definition
• Changed Go struct field types from interface{} to string for routine definitions
• Removed permission validation logic that was causing errors when routine_definition was NULL
• Updated tests to verify that procedure/function source is accessible via the new approach

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
internal/queries/queries.sql	Updated SQL queries to use p.prosrc AS routine_definition instead of r.routine_definition
internal/queries/queries.sql.go	Generated code reflecting SQL changes and type updates from interface{} to string
internal/queries/models.sql.go	Updated sqlc version from v1.29.0 to v1.30.0
internal/queries/dml.sql.go	Updated sqlc version from v1.29.0 to v1.30.0
internal/ir/inspector.go	Removed permission validation logic and simplified routine definition handling
cmd/dump/dump_permission_integration_test.go	Replaced permission error tests with tests verifying source code accessibility via p.prosrc

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