ontomark 0.4.0

Any Obsidian vault is a repository (ADR-OM-008). ontomark --repo <vault> validate | build | find … now works on a plain vault with no ontology/ folder: the generic profile applies, the vault root is the content root, and templates/, bases/, assets/, journals/ and dot-folders are excluded. Vault folder names (layout.knowledge, layout.working) and the generation-id prefix (generation.prefix) are profile settings; the DreamLab estate pins its old values, so estate output is byte-identical to 0.3.0 (conformance parity: 0 differences).

Installable from crates.io: cargo install ontomark. The crates ontomark-compile, ontomark-profile-estate and ontomark are at 0.4.0; every crate has a README and warning-free rustdoc describing the vault layout.

Fixes: the vault_layout and defined_classes tests are gated behind whelk-el, so --no-default-features builds pass again; a feature-gate test now fails if any reasoner-importing test lacks the gate.

Assets: ontomark-x86_64-unknown-linux-gnu (static musl PIE) and ontomark-engine-0.4.0.tar.gz (wasm engine for the Obsidian plugin).