sync docs
sync docs from master after the 4.4.1 docs pass
publish three more docs, now that they no longer name a live deployment delivering-a-client-project, deploy-in-production and session-and-token-storage each carried one clause about the project's own playground. Two were asides in a CI-coverage note and are gone. The third was the clearest worked example of 'same site, different paths', so it is now a generic one rather than missing. Four docs stay withheld: one names a real exposure on a live deployment, two carry proof-of-concept and deployment detail, and one is a parked design argument.
publish the docs to the wiki, generated from docs/ Nineteen feature and operations docs, plus a configuration reference and an HTTP surface page written for someone building a consumer, plus a generated index and sidebar. Generated by scripts/wiki-sync.sh, so docs/ stays the source and this is output: do not hand edit a page other than Home or a release page. Seven docs are withheld by docs/.wikiignore. Four name a live deployment, an incident, or a design argument still open. Three are publishable after one edit each to remove a clause about the project's own playground.