Brummel
176821c2e7
The 3020-line docs/DESIGN.md is replaced by the design/ ledger:
design/INDEX.md (sole addressable spine, typed Contracts+Models tables,
polymorphic links — prose file OR authoritative source //!), 14
design/contracts/*.md test-linked invariants + 3 source-link-only
contracts (mangling/env-construction/qualified-xref, no prose file —
code is SoT), 5 design/models/*.md whitepapers, and
docs/journals/2026-05-19-design-decision-records.md (the
relitigation-guard archive — every why/rejected/does-not-do/rollback/
empirical ### moved out at ###-granularity). Clean cut: git rm
docs/DESIGN.md, no stub.
RED-first crates/ailang-core/tests/design_index_pin.rs — the 4-clause
anti-regrowth spine (DESIGN.md-gone / every-INDEX-link-resolves /
every-contract-names-a-resolvable-ratifier /
contracts-carry-no-decision-record-prose) — demonstrably RED before,
GREEN after. Build-atomic by task ordering: design_schema_drift.rs's
include_str! (the only compile-time consumer) retargeted to
design/contracts/data-model.md BEFORE the deletion; its
## Data model/## Pipeline slicer dropped (a simplification the split
enables). 2 NoInstance diagnostics + 2 lockstep E2Es retargeted to
design/contracts/{float-semantics,typeclasses}.md. ~12 agent reading
lists + 5 SKILL bodies + CLAUDE.md + skills/README.md + ~25
code/C/.ail/spec comment xrefs retargeted; OQ7 dangling 'Iter 13b'
cite deleted (no forward target — a pointer would be fiction).
honesty-rule.md rewritten so the rule names the new home
(rationale->journals), resolving the recon-found internal
contradiction; the two docs_honesty_pin.rs:70,72 pinned phrases kept
verbatim+contiguous.
Boss-verified independently: cargo test --workspace 646 passed /
0 failed; design_index_pin 4/4; acceptance grep CLEAN of live
DESIGN.md refs (residuals = only the spec-mandated clause-4
deletion-enforcer). 2 DONE_WITH_CONCERNS routed to the mandatory
milestone-close audit: (a) str-abi.md:23 '(iter str-concat,
2026-05-13)' provenance stamp trips advisory architect_sweeps Sweep-1
— Boss-confirmed byte-identical to DESIGN.md@deeffb1:2062-2065, a
faithfully-migrated PRE-EXISTING anchor (regexes verbatim, only path
retargeted), NOT split-introduced — RATIFY-or-tidy at audit; (b) a
now stale-direction intra-prose 'see Str ABI below' cross-ref in
float-semantics.md — audit-adjudication candidate. Plan defect noted:
Task 9 Step 4's verbatim acceptance grep used a ^./ anchor not
matching the system's grep -rIn output; substance re-verified CLEAN.
Spec grounding-check PASS x2. Journals INDEX + decision-records
pointer appended (Boss-only).
108 lines
6.6 KiB
Markdown
108 lines
6.6 KiB
Markdown
# AILang Design — Index
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The sole addressable entry point. Every contract and model is
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reached from here. A contract is a prescriptive, test-linked
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invariant; a model is a whitepaper narrative. `ratifying-test` names
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the green test that proves a contract still holds. `link` is
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polymorphic: a `design/` file, or the authoritative source `//!`
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header when the code is the single source of truth.
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## Project framing
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### Goal
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AILang is a programming language for LLM authors. It compiles to LLVM IR.
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Performance: native, no GC for the MVP.
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Optimised for:
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- **Machine readability** over human ergonomics. The source is structured.
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- **Local reasoning.** Every definition carries its full type and effects.
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- **Provability.** Pure core language, explicit effects, optional refinements.
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- **Robustness against hallucinations.** Symbols are hashable; tools can verify
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existence without spending context window.
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### Project ecosystem
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AILang is not just a language but an ecosystem. The language on its own is
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only valuable when its surroundings make it usable, checkable, and
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extensible for its target user (LLM authors). The repo therefore contains
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several equally important components — none of them optional, all of them
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evolving in lockstep with the language:
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- **Language core** (`crates/ailang-core`, `crates/ailang-check`,
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`crates/ailang-codegen`): AST, type system, codegen.
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- **Surface forms** (`crates/ailang-surface`, `crates/ailang-prose`):
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the LLM-facing renderings of a module. `ailang-surface`
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is the lossless Form-A printer/parser — the canonical authoring
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surface fixed by Decision 6, with a round-trip property
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`parse ∘ print = id` gating every release. `ailang-prose`
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is the lossy Form-B projection — human-readable prose for review and
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edit, with no parser; re-integration goes through the
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LLM-mediator round-trip documented in `docs/PROSE_ROUNDTRIP.md`.
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- **CLI** (`crates/ail`): toolchain for tooling consumers — `manifest`,
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`describe`, `deps`, `check`, `build`, `parse`, `render`, `prose`,
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`merge-prose`, etc., preferably with `--json` for machine consumption.
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- **Examples** (`examples/`): canonical `.ail.json` programs. They are
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specification anchors, not demos — the E2E suite hangs off them.
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- **Skills** (`skills/`): specialised disciplines
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(`brainstorm`, `planner`, `implement`, `audit`, `debug`,
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`fieldtest`) plus the agent rosters they dispatch
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(`skills/<name>/agents/`). They form the project's own
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development methodology and are versioned with the codebase.
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See `skills/README.md`.
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- **Design ledger** (`design/`): `design/INDEX.md` (this file — the
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sole addressable spine for canonical state), `design/contracts/`
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(test-linked invariants), `design/models/` (onboarding
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whitepapers).
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- **Docs** (`docs/`): `docs/journals/` (per-iter decisions log; see
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`INDEX.md`), `docs/journal-archive.md` (archived monolith for
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pre-2026-05-11 history), `roadmap.md` (forward queue), `specs/`
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(per-milestone design specs), `plans/` (per-iteration
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implementation plans).
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- **Tests**: unit tests per crate plus E2E in `crates/ail/tests/e2e.rs`. Every
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new compiler path needs a test, otherwise the feature does not count as done.
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### Project language: English
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All in-tree content is written in English: source code (identifiers,
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comments, string literals, CLI help), design documents, the journal, agent
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prompts, READMEs, commit messages, examples, and `CLAUDE.md`. The live
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conversation between user and me stays German for ergonomic reasons;
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everything that lands in git is English. This keeps diffs and tooling output
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uniform and matches the audience for AILang (LLM authors), for whom English
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is the default.
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## Contracts
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| id | consumer / lifetime | ratifying-test | link |
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|----|---------------------|----------------|------|
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| feature-acceptance | brainstorm-gate / stable | skills/brainstorm/SKILL.md | design/contracts/feature-acceptance.md |
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| authoring-surface | LLM author / stable | crates/ailang-surface/tests/round_trip.rs | design/contracts/authoring-surface.md |
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| roundtrip-invariant | every release / stable | crates/ailang-surface/tests/round_trip.rs | design/contracts/roundtrip-invariant.md |
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| memory-model | LLM author / stable | crates/ailang-check/src/uniqueness.rs (in-source mod tests) | design/contracts/memory-model.md |
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| data-model | LLM author / stable | crates/ailang-core/tests/design_schema_drift.rs | design/contracts/data-model.md |
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| mangling | codegen / stable | crates/ail/tests/eq_ord_e2e.rs | crates/ailang-codegen/src/lib.rs //! |
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| env-construction | codegen / stable | crates/ailang-check/tests/duplicate_ctor_pin.rs | crates/ailang-codegen/src/lib.rs //! |
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| qualified-xref | codegen / stable | crates/ail/tests/codegen_import_map_fallback_pin.rs | crates/ail/src/main.rs //! |
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| frozen-value-layout | embedding ABI / one-way-frozen| crates/ailang-codegen/tests/embed_record_layout_pin.rs | design/contracts/frozen-value-layout.md + runtime/rc.c §layout |
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| float-semantics | LLM author / stable | crates/ail/tests/eq_float_noinstance.rs | design/contracts/float-semantics.md |
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| typeclasses | LLM author / stable | crates/ail/tests/show_no_instance_e2e.rs | design/contracts/typeclasses.md |
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| str-abi | runtime ABI / stable | crates/ail/tests/e2e.rs (Str path) | design/contracts/str-abi.md + runtime/str.c §heap-Str |
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| tail-calls | codegen / stable | crates/ailang-check/src/lib.rs (in-source tail_call_in_non_tail_position_is_rejected) | design/contracts/tail-calls.md |
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| honesty-rule | architect+grounding / stable | crates/ailang-core/tests/docs_honesty_pin.rs | design/contracts/honesty-rule.md |
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| embedding-abi | embedding host / stable | crates/ailang-codegen/tests/embed_record_layout_pin.rs | design/contracts/embedding-abi.md |
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| scope-boundaries | architect+author / stable | crates/ailang-core/tests/effect_doc_honesty_pin.rs | design/contracts/scope-boundaries.md |
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| verification | architect / stable | bench/architect_sweeps.sh | design/contracts/verification.md |
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## Models
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| id | consumer / lifetime | link |
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|----|---------------------|------|
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| rc-uniqueness | onboarding / evolves | design/models/rc-uniqueness.md |
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| typeclasses | onboarding / evolves | design/models/typeclasses.md |
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| effects | onboarding / evolves | design/models/effects.md |
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| authoring-surface | onboarding / evolves | design/models/authoring-surface.md |
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| pipeline | onboarding / evolves | design/models/pipeline.md |
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