chore: retire iflow integration — product discontinued (#3166) (#3211)

Remove the iFlow CLI integration whose product was shut down: subpackage,
registry entry, catalog entry, docs, tests, and issue-template options.

Assisted-by: GitHub Copilot (model: Claude Opus 4.8, autonomous)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/specify_cli/integrations/__init__.py

@@ -64,7 +64,6 @@ def _register_builtins() -> None:
     from .generic import GenericIntegration
     from .goose import GooseIntegration
     from .hermes import HermesIntegration
-    from .iflow import IflowIntegration
     from .junie import JunieIntegration
     from .kilocode import KilocodeIntegration
     from .kimi import KimiIntegration
@@ -103,7 +102,6 @@ def _register_builtins() -> None:
     _register(GenericIntegration())
     _register(GooseIntegration())
     _register(HermesIntegration())
-    _register(IflowIntegration())
     _register(JunieIntegration())
     _register(KilocodeIntegration())
     _register(KimiIntegration())

src/specify_cli/integrations/iflow/__init__.py

@@ -1,21 +0,0 @@
-"""iFlow CLI integration."""
-
-from ..base import MarkdownIntegration
-
-
-class IflowIntegration(MarkdownIntegration):
-    key = "iflow"
-    config = {
-        "name": "iFlow CLI",
-        "folder": ".iflow/",
-        "commands_subdir": "commands",
-        "install_url": "https://docs.iflow.cn/en/cli/quickstart",
-        "requires_cli": True,
-    }
-    registrar_config = {
-        "dir": ".iflow/commands",
-        "format": "markdown",
-        "args": "$ARGUMENTS",
-        "extension": ".md",
-    }
-    multi_install_safe = True