cs.app.pilfer.pilfer: update imports

cs.app.pilfer.pilfer: Pilfer: new GET, HEAD, OPTIONS, POST methods doing fetches via the self.session

cs.app.pilfer.pilfer: Pilfer.session: may be supplied as a session name

cs.app.pilfer.pilfer: Pilfer: new .session field with a PilferSession; open/close it in __enter_exit__

cs.app.pilfer.pilfer: new PilferSession class to hold browse state, initially load/save cookies for use with fetches

cs.app.pilfer.__main__: PilferCommand.cmd_dump: dump the HTML structure for text/html pages

TODO-pilfer.txt: sitemaps: an @on(selector....) instead of the opaque pattern stuff in use presently, flexible generator/return types etc

cs.app.pilfer.pilfer: small docstring updates

cs.pilfer.sitemap: SiteMap: docstring fix

cs.app.pilfer.__main__: PilferCommand: new cmd_dump subcommand for inspecting web pages

cs.app.pilfer.__main__: PilferCommand.cmd_sitemap: tidier logic, improve output

cs.urlutils: URL.soup: drastic simplification, untested

csfileutils: atomic_filename: make all parameters after the filename keyword only

cs.context: ContextManagerMixin: improve the docstring

merge default -> pilfer

TODO.txt: docker-caddy script

pkg_tags: cs.typingutils: update PyPI release: set pypi.release='20250503' [IGNORE]

pkg_tags: cs.typingutils: mark revision as ok: set ok_revision='52320a5ef1df5436b63defe2d1eda1dd5bbcd998' [IGNORE]

cs.typingutils: bump __version__ to 20250503-post to avoid misleading value for future unreleased changes [IGNORE]

cs.typingutils: added tag cs.typingutils-20250503 [IGNORE]