Make AGENTS.md the agent reference and drop the rebuild-layer history

src/lightcone/engine/__init__.py

@@ -1,9 +1,3 @@
-"""The lightcone execution engine.
-
-Rebuild in progress: the engine is being re-added layer by layer on top of
-the normative design spec. Layer 1 is project scaffolding only —
-:mod:`lightcone.engine.project` (convergence) and
-:mod:`lightcone.engine.templates` (the scaffolded files).
-"""
+"""The lightcone execution engine."""
 
 from __future__ import annotations

tests/conftest.py

@@ -117,7 +117,7 @@ def fake_run(argv: list[str], *, cwd: Path) -> MagicMock:
             artifact = "uv.lock" if argv[1] == "lock" else ".venv"
             return MagicMock(returncode=0 if (project / artifact).exists() else 1)
         if argv[:2] == ["uv", "lock"]:
-            # Only has to exist and be non-empty — layer 1 parses no lock.
+            # Only has to exist and be non-empty — convergence parses no lock.
             (project / "uv.lock").write_text("version = 1\n")
         elif argv[:2] == ["uv", "sync"]:
             (project / ".venv" / "bin").mkdir(parents=True, exist_ok=True)

tests/test_sandbox_wrap.py

@@ -119,7 +119,7 @@ def test_the_write_tier_is_restated_after_the_read_only_guard() -> None:
     readable project tree works there for free. SBPL is last-match-wins,
     so reproducing that needs the write set to have the final word — or
     the guard's `(deny file-write* PROJECT)` revokes the output directory
-    layer 4's recipes write into, and macOS refuses what Linux allows."""
+    recipes write into, and macOS refuses what Linux allows."""
     project = Path("/tmp/proj")
     built = Policy(
         read=(project,),

tests/test_worker.py

@@ -172,7 +172,7 @@ def test_a_skip_returns_the_recorded_digest_rather_than_rehashing(root: Path) ->
 
 
 def test_a_moved_environment_leaves_the_output_alone(root: Path) -> None:
-    """The change this layer exists for. The recipe and the decisions still
+    """The change the identity split exists for. The recipe and the decisions still
     define exactly this output, so it is reported and kept — remaking it
     would spend the compute that a rewritten `uv.lock` never justified."""
     made = _make(root, "first")