feat: expose --ietf, --verbose, --strict pyang options in YANG API (#698

)

Expose pyang's --ietf, --verbose, and --strict options through the
/api/yang/validate endpoint and the YANG Tools web page. Options are
parsed as booleans, similar to the idnits API.

Defaults: --ietf on, --verbose on, --strict off.


Model: claude-opus-4-8 (thinking: medium)

Co-authored-by: Claude <noreply@anthropic.com>

feat: Add support for yang validation (#686)

* feat: Add support for yang validation

* test: Tests for yang validation

Co-Authored-By: Claude (Opus 5, high) <noreply@anthropic.com>

* docs: Update OpenAPI spec

Co-Authored-By: Claude (Opus 5, high) <noreply@anthropic.com>

* feat: Add UI for yang validation

* style: black

* fix: Add vaild message

This adds a valid message when pyang doesn't reports errors.

* build(k8s): Store YANG modules on a volume with weekly refresh

Co-Authored-By: Claude <noreply@anthropic.com>
Model: claude-opus-5 (thinking: high)

* build(k8s): Fix persistent volume declaration

Co-Authored-By: Claude <noreply@anthropic.com>
Model: claude-opus-5 (thinking: high)

* build(k8s): Fix yang init

* build(k8s): Set safe.directory for the YANG volume

Co-Authored-By: Claude <noreply@anthropic.com>
Model: claude-opus-5 (thinking: high)

* chore: Add a note about service status

* fix: Add --strict option

* chore: Use correct YANG module path for I-Ds

---------

Co-authored-by: Claude (Opus 5, high) <noreply@anthropic.com>

chore(deps): Bump up xml2rfc to 3.34.1 (#687)

Also updates other Python dependencies


Model: claude-opus-4-8 (thinking: medium)

Co-authored-by: Claude <noreply@anthropic.com>

chore(deps): Bump up kramdown-rfc (#678)

Co-authored-by: kesara <1027692+kesara@users.noreply.github.com>

chore(deps): Bump up kramdown-rfc (#677)

Co-authored-by: kesara <1027692+kesara@users.noreply.github.com>

chore(deps): Bump up kramdown-rfc (#676)

Co-authored-by: kesara <1027692+kesara@users.noreply.github.com>

fix(ui): Fix API documentation header issues (#675)

feat: Use idnits v3 as the default nits tool (#660)

chore(deps): Pin gunicorn to 25.*.* (#655)

chore(deps): Bump up xml2rfc to 3.34.0 (#654)

Also updates other Python dependencies