The 18f bench result (rc/bump = 2.86x but gc/bump = 2.90x) showed
the existing bench measures alloc-path cost, not the determinism
question Decision 10 actually commits to. The user's framing
made this explicit: RC has to be DEMONSTRABLY better than Boehm —
the relevant axis is per-operation latency under heap pressure
(Boehm's stop-the-world vs RC's amortized constant), not total
wall-time.
This agent's mandate: design workloads against a falsifiable
hypothesis, run measurements that fit the hypothesis (latency
distribution for determinism, not throughput), pair Implicit-mode
fixtures (Boehm-fair) with explicit-mode fixtures (RC-fair) so
each allocator is benched in its native regime, and report
honestly what the data does NOT say.
Distinguished from implementer: ships evidence, not features.
Distinguished from architect: focuses on a single dimension
(memory) and on empirical measurement, not drift review.
Honesty rules built in:
- Tie => bench did not distinguish, not "they are equivalent".
- Implicit-mode RC numbers are not informative (RC leaks under
Implicit) — call out whenever reported.
- Bench-only instrumentation in runtime/rc.c must be marked
removable and not leak into production.
- No verdict statements: orchestrator decides defaults / drops.
Adds ailang-docwriter to /agents/ — a recurring role for keeping
crate-, module-, and pub-item-level rustdoc accurate. First mission:
ailang-core. Crate root, every module root, every pub item documented;
intra-doc links throughout; Iter-13a additions (TypeDef.vars, Type::Con.args)
get an explicit backwards-compat note. Two stale broken-link warnings in
ailang-check fixed in passing. cargo doc --no-deps now warning-free across
the workspace; promoted to verification invariant 6 in DESIGN.md.
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>
Vier spezialisierte Agent-Definitionen (implementer, architect, tester,
debugger) im sichtbaren agents/-Verzeichnis. DESIGN.md erweitert um den
Abschnitt "Projekt-Ökosystem" — AILang ist Sprache + CLI + Examples +
Agents + Doku + Tests gleichermaßen. JOURNAL hält den Workflow-Wechsel
auf Orchestrator-Modus fest und ordnet Iteration 4 neu.
Brummel