…65608) (#65620)

DagRunOperations.list() required a non-None state and unconditionally
sent str(state) to the API. When the CLI omitted --state, argparse
passed None and the API received the literal string "None", failing
with "Invalid value for state. Valid values are queued, running,
success, failed".

Make state optional (Optional[str] = None) and only include it in the
query string when provided. Give limit a sensible default (100) while
we are at it so the method works when called with no args. The
auto-generated `airflowctl dagrun list` command now accepts --state as
a true filter instead of a required flag.

Reported in #65497 (rc2 testing).
(cherry picked from commit 89a021c)

Co-authored-by: Jarek Potiuk <jarek@potiuk.com>

DagRunOperations.list() required a non-None state and unconditionally
sent str(state) to the API. When the CLI omitted --state, argparse
passed None and the API received the literal string "None", failing
with "Invalid value for state. Valid values are queued, running,
success, failed".

Make state optional (Optional[str] = None) and only include it in the
query string when provided. Give limit a sensible default (100) while
we are at it so the method works when called with no args. The
auto-generated `airflowctl dagrun list` command now accepts --state as
a true filter instead of a required flag.

Reported in #65497 (rc2 testing).

* Fix airflowctl dagrun list crash when --state is omitted (#65608)

DagRunOperations.list() required a non-None state and unconditionally
sent str(state) to the API. When the CLI omitted --state, argparse
passed None and the API received the literal string "None", failing
with "Invalid value for state. Valid values are queued, running,
success, failed".

Make state optional (Optional[str] = None) and only include it in the
query string when provided. Give limit a sensible default (100) while
we are at it so the method works when called with no args. The
auto-generated `airflowctl dagrun list` command now accepts --state as
a true filter instead of a required flag.

Reported in #65497 (rc2 testing).

* Fix airflow-ctl missing pyyaml runtime dependency (#65489)

* Cap airflow-ctl httpx dependency below 1.0 (#65607)

httpx 1.0 (currently 1.0.dev3 on PyPI) is a ground-up API rewrite:
the entire exception hierarchy (HTTPStatusError, RequestError,
ConnectError, ReadError, TimeoutException, ...) was removed and
client/transport/auth interfaces were redesigned. airflow-ctl today
uses httpx.HTTPStatusError, httpx.ConnectError, AsyncClient, and
Response.raise_for_status() throughout api/client.py and
api/operations.py, so pre-release httpx 1.x breaks import-time
(ModuleNotFoundError / AttributeError) and the tool fails to start.

Cap to <1.0 so users who pass --pre / --prerelease=allow do not
accidentally pull the rewrite. The full migration to httpx 1.x is
tracked at #65609 and the
cap carries a comment pointing at that URL so the link survives
after this PR merges.

* Prepare airflow-ctl 0.1.4rc3 release (#65634)