[vistart]

Description

Adds the missing snowflake introspection coverage and aligns the CLI surface with what the backend can actually deliver.

• routines from FUNCTIONS and PROCEDURES
• standalone sequences
• stages, file formats, pipes, tasks and streams
• identity and virtual-column facts on columns

The ddl introspection type is no longer advertised for this backend because
supports_ddl_extraction() is permanently False. introspect ddl is now an
argparse usage error (exit 2); the backend DDL expression/formatter remains for
a future implementation.

Adds # (no linked issue; operator-directed introspection coverage work)

Type of change

• feat: A new feature
• docs: Documentation only changes
• test: Adding missing tests or correcting existing tests
• ci: Changes to CI configuration files and scripts
• perf
• chore
• build
• revert

Breaking Change

• Yes
• No

The removed ddl CLI type never produced an answer for an ordinary table, so
its removal changes the help/type surface rather than a working capability.

Applicable rhosocial-activerecord Version Range:

>=1.0.0.dev30,<2.0.0

Related Repositories/Packages

• rhosocial-activerecord core: release/v1.0.0.dev30
• rhosocial-activerecord-testsuite: release/v1.0.0.dev17
• This backend's own release branch: release/v1.0.0.dev2

Testing

• CI run 42592054261: success (all jobs)
• Local offline tests: 135 offline introspection/CLI tests
• introspect --help no longer lists ddl
• introspect ddl exits 2 with invalid choice

Test Plan:

The CI run above is the full matrix. Targeted offline suites cover the new
formatters, parsers, sync/async dispatch, capability gates and CLI vocabulary.

Checklist

• My code follows the project's code style guidelines.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added a Changelog fragment (changelog.d/<pr_number>.<type>.md).
  Not added: the operator explicitly requested no changelog fragments.
• I have verified that my changes do not introduce SQL injection vulnerabilities.
• I have checked for potential performance regressions.

Additional Notes

The backend capability/formatter for DDL extraction is intentionally left in
place; only the CLI type was removed until a real implementation exists.

Branch Commits

da737a1 refactor(snowflake): stop advertising ddl introspection
b2ea3d9 ci(snowflake): test against testsuite release/v1.0.0.dev17
6cd1968 feat(snowflake): add routines, sequences and catalog-object introspection

[codecov]

Codecov Report

❌ Patch coverage is 92.77778% with 26 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.71%. Comparing base (edb5cda) to head (e518a2f).

Files with missing lines	Patch %	Lines
...ckend/impl/snowflake/introspection/introspector.py	87.73%	13 Missing and 13 partials ⚠️

Additional details and impacted files

@@                   Coverage Diff                   @@
##           release/v1.0.0.dev2      #10      +/-   ##
=======================================================
+ Coverage                80.96%   81.71%   +0.75%     
=======================================================
  Files                      117      117              
  Lines                     5206     5546     +340     
  Branches                   768      804      +36     
=======================================================
+ Hits                      4215     4532     +317     
- Misses                     760      771      +11     
- Partials                   231      243      +12     

Flag	Coverage Δ
python-3.12	81.71% <92.77%> (+0.75%)	⬆️
unittests	81.71% <92.77%> (+0.75%)	⬆️

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[sonarqubecloud]

Quality Gate failed

Failed conditions
C Security Rating on New Code (required ≥ A)

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