Make English the project-wide language: all comments, string literals,
CLI help text, design docs, journal, agent prompts, and README. Only
CLAUDE.md (the user's own instruction file) stays German, and the live
conversation between user and Claude continues in German.
Adds a new "Project language: English" section to docs/DESIGN.md as
the durable convention. No logic changes — translation only. Four
internal error strings in the typechecker were retranslated; no
test asserts on their wording.
Verified: cargo test --workspace passes (44/44).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Neue API check_workspace(&Workspace) -> Vec<Diagnostic>; check_module
hebt das Modul intern in einen Trivial-Workspace. Term::Var mit genau
einem Punkt im Namen ist ein qualifizierter Verweis <prefix>.<def>,
aufgelöst über Import-Map (alias-oder-modulname → echter Modulname).
Drei neue Diagnostic-Codes: unknown-module, unknown-import,
invalid-def-name. ail check lädt jetzt immer via load_workspace;
Loader-Fehler werden im JSON-Modus zu strukturierten Diagnostics
(module-not-found, module-cycle, …). DESIGN.md und JOURNAL.md
dokumentieren die Konvention. Hash-Stabilität: alle ir_snapshot_*-
Tests bitidentisch grün, kein neuer AST-Knoten.
Brummel