v0.0.42 — Docs Portal Segmentation + Truthfulness Pass

What's Changed

• feat(docs): add /self-hosted section + shared single-source mount (#4259) by @msywulak in #4279
• Slice 2 — audience taxonomy + build-time / + fork marker (#4260) by @msywulak in #4280
• docs(slice-3a): classify + verify SaaS-only pages, partition test (#4263) by @msywulak in #4281
• docs(4264): Slice 3b — move self-hosted-only content into /self-hosted (un-tab) by @msywulak in #4283
• docs(portal): Slice 3c — single-source shared content into both trees (#4265) by @msywulak in #4285
• docs(4267): Slice 7 — Caddy 308 redirect map + redirect-coverage test by @msywulak in #4286
• refactor: four architecture deepenings (dead-bridge deletion, fail-closed helper, ExecutionTarget SSOT, REST audit) by @msywulak in #4284
• docs(search): section-faceted combined search index over all three sources (#4262) by @msywulak in #4287
• docs(4266): section-aware llms.txt / llms-full.txt / .mdx twins by @msywulak in #4288
• docs: Slice 9 truthfulness backstop + de-muddy 6 SaaS pages (#4274, #4282) by @msywulak in #4291
• refactor: hot-reload ATLAS_KNOWLEDGE_SYNC_INTERVAL_HOURS — drop the restart requirement by @msywulak in #4293
• docs(#4290): undocumented feature surfaces + recently-shipped features by @msywulak in #4304
• docs(portal): audience-link hygiene pass — repoint stale /self-hosted + resolve cross-mount leaks (#4289) by @msywulak in #4305
• refactor: type-strength follow-ups from the v0.0.41 review panel (#4278) by @msywulak in #4306
• docs(roadmap): close out v0.0.42 — Docs Portal Segmentation + Truthfulness Pass by @msywulak in #4307

Full Changelog: v0.0.41...v0.0.42