INDEX + roadmap: iter pd.1 logged; prelude-decouple milestone moved P2 → P0 [~]

Original "Prelude embed: Form-A as compile-time source" P2 entry
removed; superseded by the wider "Prelude / core decoupling" P0 entry
that now reflects the shipped β.2 loader-split shape and the three-
iter sketch (pd.1 done, pd.2 + pd.3 to follow).

docs/journals/INDEX.md

@@ -66,3 +66,4 @@
 - 2026-05-14 — iter rpe.1: retire per-type io/print_int|bool|float; corpus migrated to polymorphic print → 2026-05-14-iter-rpe.1.md
 - 2026-05-14 — iter rpe.1.tidy: subst.rs preserves Type::Fn modes through rebuild → 2026-05-14-iter-rpe.1.tidy.md
 - 2026-05-14 — iter cli-diag-human: WorkspaceLoadError thru diagnostic in non-JSON CLI path → 2026-05-14-iter-cli-diag-human.md
+- 2026-05-14 — iter pd.1: core API split — load_modules_with + build_workspace + implicit_imports threading; load_workspace_with kept as 3-line shim so surface unchanged; production literal-"prelude" count in workspace.rs dropped 8→4 → 2026-05-14-iter-pd.1.md

docs/roadmap.md

@@ -35,9 +35,17 @@ work progresses.
 
 ## P0 — In flight
 
-_(empty — canonical-type-names milestone closed 2026-05-11; Floats
-closed 2026-05-10 and was removed once it stopped being load-bearing
-context. Pick the next milestone from P1.)_
+- [~] **\[milestone\]** Prelude / core decoupling — retire
+  `examples/prelude.ail.json` + remove all literal-`"prelude"` strings
+  from `crates/ailang-core/src/`. Three iters: pd.1 (core API split,
+  shipped 2026-05-14), pd.2 (surface assumes ownership of prelude
+  embed + cross-form-identity preflight), pd.3 (delete the JSON +
+  carve-out cleanup).
+  - context: `docs/specs/2026-05-14-prelude-decouple.md`; per-iter
+    journals 2026-05-14-iter-pd.1 (and pd.2 / pd.3 to follow). Reframed
+    from the original "Prelude embed: Form-A as compile-time source"
+    P2 entry to widen scope from pure-embed-swap to full prelude-
+    decoupling of `ailang-core` (β.2 loader-split shape).
 
 ## P1 — Next
 
@@ -137,72 +145,6 @@ context. Pick the next milestone from P1.)_
     hits) by treating Form A as the privileged surface in the
     working tree, not just in flavour text.
 
-- [ ] **\[milestone\]** Prelude embed: Form-A as compile-time source.
-  Retire `examples/prelude.ail.json` by switching the
-  `include_str!`-then-`serde_json::from_str` embed sites in
-  `crates/ailang-core/src/workspace.rs:417` and
-  `crates/ail/src/main.rs:474` to consume `examples/prelude.ail`
-  at compile time, parsed via `ailang_surface::parse`. After this
-  milestone the only surviving `.ail.json` carve-outs are the
-  seven subject-matter rejection fixtures (§C4 (a) of the
-  form-a-default-authoring spec); §C4 (b) becomes empty and is
-  removed from the spec.
-
-  **Motivation.** The form-a-default-authoring milestone (just
-  closed) made `.ail` the authoring surface for every program in
-  the corpus, with one exception: the prelude. The prelude is
-  the language's most-read file and the canonical demonstration
-  of every language feature stacked into one module; that it is
-  the *one* file the user authors as `.ail.json` is a doctrine
-  inconsistency relative to CLAUDE.md "authors write `.ail`; the
-  build derives the JSON-AST in-process via `ailang_surface::parse`".
-
-  **Problem.** `ailang-core` consumes the prelude at compile time
-  via `include_str!("../../../examples/prelude.ail.json")` plus
-  `serde_json::from_str`. Switching the embed to `prelude.ail`
-  requires parsing via `ailang_surface::parse`, but `ailang-core`
-  cannot import `ailang-surface` (the crate-cycle constraint
-  documented at `crates/ailang-surface/src/loader.rs:9-13` —
-  `ailang-surface` depends on `ailang-core` for the AST types).
-  The same embed exists at `crates/ail/src/main.rs:474`; that
-  site *can* import `ailang-surface` but is in lockstep with the
-  `ailang-core` one (both must reproduce the same `Module` value
-  for prelude semantics to be uniform between CLI dispatch and
-  workspace loading).
-
-  **Resolution options** (decide at brainstorm time):
-  - (β) Split the workspace loader: move the prelude-injection
-    step from `ailang-core::load_workspace` to a new
-    `ailang-surface::load_workspace_with_prelude` (or wrapper).
-    `ailang-core` retains a prelude-free workspace primitive;
-    `ailang-surface` is the entry point that injects the parsed
-    prelude. Substantive refactor of ~3-5 sites.
-  - (γ) `build.rs` generates `examples/prelude.ail.json` at build
-    time from `examples/prelude.ail` via either an in-tree parser
-    (would re-create a similar crate-graph issue) or a snapshot
-    test that fails on drift. Avoids the loader-split but introduces
-    a build-time artefact and a bootstrap concern (the `ail` binary
-    itself is built from `ailang-core`).
-  - (δ) Some hybrid: prelude stays canonical as `.ail.json` in
-    storage but is rendered to `prelude.ail` at every commit by a
-    pre-commit hook; the dual-form is preserved as a lockstep
-    invariant rather than retired. Trades one inconsistency for
-    another but is the smallest change.
-
-  **Carve-out today.** Per spec §C4 (b) (added 2026-05-13),
-  `prelude.ail.json` is the sole compile-time-embed carve-out
-  during the form-a-default-authoring milestone. `examples/prelude.ail`
-  already exists alongside it (rendered in iter form-a.0) as the
-  authoring surface; the dual-form for prelude is the symptom this
-  milestone exists to retire.
-
-  - context: surfaced 2026-05-13 during iter form-a.1 recon; the
-    crate-cycle issue was not anticipated by the spec authors and
-    forced a brainstorm-level amendment to §C4. The fix exceeds
-    the form-a-default-authoring milestone's scope and is
-    sequenced as its own milestone to keep the architectural
-    change auditable in isolation.
-
 - [ ] **\[feature\]** Operator routing through `Eq` / `Ord` — `==`,
   `<` etc. resolved via the typeclass instead of the built-in
   primitive comparators. No commitment; gated on bench re-baselining