feat: add HOST env option to listen on a different interface - #522

…ss-package drift guard

Reviewer follow-up on the docmost#522 internal-link import fix. The fix itself is
confirmed correct; these three changes harden its load-bearing subset invariant
and fix a stale doc.

Finding 1 (drift guard): the in-package test only compared isInternalPagePath
against a HAND-COPIED server regex, so a later narrowing of the real server
INTERNAL_LINK_REGEX would leave the test green while the client silently became
WIDER than the server. Add apps/server/.../export/internal-link-parity.spec.ts:
the top layer already depends on @docmost/prosemirror-markdown and exports
isInternalPagePath, so this spec imports the LIVE server INTERNAL_LINK_REGEX AND
the LIVE isInternalPagePath and asserts subset over an accept-corpus — a server
narrowing now reddens CI. The in-package manual copy is demoted from its
"drift guard" role (comment updated to say so; it stays as local documentation).

Finding 2 (charset non-vacuity): the REJECT list was purely structural, so the
mutation widening the slug charset [a-zA-Z0-9-] -> [a-zA-Z0-9-.] survived the
whole suite. Add REJECT cases whose ONLY defect is a forbidden slug character
(abc.def / abc_def / abc%20 / abc~x); assert both isInternalPagePath and the
server regex reject them. The mutation now reddens the new reject test.

Finding 3 (stale JSDoc): canonicalize.ts KNOWN_DEFAULTS module blurb claimed
every entry was read from docmost-schema and import-materialized. The new
link.internal default breaks both claims (source is editor-ext/src/lib/link.ts;
external links leave internal absent/null, never false). Add a bullet documenting
the one editor-sourced, non-materialized default (false ≡ absent/null).

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

…ет внутренние ссылки на страницы как internal (docmost#522)' (docmost#524) from fix/522-internal-links into develop

Reviewed-on: https://gitea.vvzvlad.xyz/vvzvlad/gitmost/pulls/524