Casca 1.5.10 (2026-06-06)Link to section

Supersedes v1.5.9, which never published. The v1.5.9 tag was pushed with the Phase 102 release notes still under ## Unreleased; preflight correctly rejected it for a missing [1.5.9] CHANGELOG header. This release ships the same Phase 102 content under the promoted [1.5.10] header. No artifacts were published under v1.5.9.

AddedLink to section

• Add [[mount]] support for the native SSG so site configs can mount external content directories into the page graph. Mounted docs support source, target, extensions, index = "auto" | "none", and index_title.
• Add the section_index(section, mode) layout helper for server-rendered section navigation and card indexes.

RemovedLink to section

• Remove markdown front matter parsing from the Casca SSG. The SSG no longer stores or interprets title, layout, date, slug, draft, tags, or aliases from markdown metadata blocks.
• Remove CASCA-DOCTOR-E060; casca doctor no longer validates markdown front matter syntax.

BreakingLink to section

• Markdown front matter is no longer supported by the Casca SSG. Use the first # h1 for page titles, casca.toml layout routing for layout selection, file renames for slugs, and _-prefixed files or directories for drafts. A markdown source whose post-SPDX prefix matches an exact closed +++\n...\n+++ or ---\n...\n--- metadata fence has that fence stripped before rendering, and casca doctor emits CASCA-DOCTOR-W001 for that path. Bare or unclosed --- continues to render as standard CommonMark content. The fence content is never parsed or exposed.

ToolingLink to section

• Drop --provenance from the npmjs.com publish step. Forgejo runners do not issue the GitHub Actions OIDC id-token that npm provenance attestation requires, so the flag forced EUSAGE and blocked publish. Tarball contents, integrity hashes, and dist-tag wiring are unchanged; the loss is the npmjs.com "signed" badge for these packages. Codeberg Packages publishes are unaffected (they never used the flag).
• Add toolchain-aware release rebuild gates for the CLI platform artifacts. The release workflow now records deterministic input hashes and per-platform audit decisions, reuses previous Codeberg release archives only when the prior artifact and input hash verify exactly, and otherwise rebuilds with a logged reason.
• Note: the first release after this change rebuilds all platforms to seed deterministic archives and the toolchain-aware audit; subsequent releases skip rebuild when neither source nor toolchain changed.