Document stable Rust support

CHANGELOG.md

@@ -90,4 +90,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Memory-efficient doublets storage
 - Support for split and unit storage modes
 - FFI bindings for cross-language support
-- Comprehensive data structures for link management
+- Comprehensive data structures for link management

CONTRIBUTING.md

@@ -20,10 +20,11 @@ Thank you for your interest in contributing! This document provides guidelines a
    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
    ```
 
-   The project uses a specific nightly toolchain configured in `rust-toolchain.toml`:
+   The project uses the stable Rust toolchain configured in `rust-toolchain.toml`:
+
    ```toml
    [toolchain]
-   channel = "nightly-2022-08-22"
+   channel = "stable"
    ```
 
 3. **Install development tools**
@@ -262,7 +263,6 @@ Fragments are automatically collected into CHANGELOG.md during the release proce
 ├── changelog.d/          # Changelog fragments
 │   └── README.md         # Fragment instructions
 ├── ci/                   # CI scripts
-├── dev-deps/             # Development dependencies (git submodules)
 ├── doublets/             # Main doublets library
 │   ├── src/              # Source code
 │   ├── tests/            # Integration tests

README.md

@@ -34,14 +34,11 @@ Add to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-doublets = "0.1.0-pre"
+doublets = "0.3.0"
 ```
 
-**Note:** This crate requires nightly Rust due to usage of experimental features.
-
-```bash
-rustup default nightly
-```
+This crate builds on stable Rust. The minimum supported Rust version is 1.85,
+as configured by `doublets/Cargo.toml`.
 
 ## Example
 
@@ -200,10 +197,6 @@ doublets-rs/
 │   │       └── split/  # Split storage implementation
 │   └── benches/        # Performance benchmarks
 ├── doublets-ffi/       # C FFI bindings
-├── dev-deps/           # Platform dependencies
-│   ├── data-rs/        # Data primitives (LinkType, Flow, etc.)
-│   ├── mem-rs/         # Memory abstractions (RawMem, FileMapped)
-│   └── trees-rs/       # Tree structures (size-balanced trees)
 └── integration/        # Integration tests
 ```
 
@@ -246,9 +239,10 @@ cargo bench --all-features
 
 ## Dependencies
 
-- [platform-data](https://github.com/linksplatform/data-rs) - Core data types
-- [platform-mem](https://github.com/linksplatform/mem-rs) - Memory abstractions
-- [platform-trees](https://github.com/linksplatform/trees-rs) - Tree implementations
+- [platform-num](https://crates.io/crates/platform-num) - Link reference numeric traits
+- [platform-data](https://crates.io/crates/platform-data) - Core data types
+- [platform-mem](https://crates.io/crates/platform-mem) - Memory abstractions
+- [platform-trees](https://crates.io/crates/platform-trees) - Tree implementations
 
 ## Support
 

STABLE_RUST.md

@@ -0,0 +1,36 @@
+# Stable Rust Support
+
+`doublets-rs` builds on stable Rust. The workspace uses `rust-toolchain.toml`
+with `channel = "stable"`, and the `doublets` crate declares Rust 1.85 as its
+minimum supported Rust version.
+
+## Current Setup
+
+- The crate no longer uses `#![feature(...)]` attributes.
+- CI uses `.github/workflows/release.yml` with `dtolnay/rust-toolchain@stable`.
+- Platform dependencies are consumed from crates.io:
+  `platform-num`, `platform-data`, `platform-mem`, and `platform-trees`.
+- The old `dev-deps/` git submodules are no longer required.
+- Miri, when used manually through `ci/miri.sh`, still installs a nightly
+  toolchain because Miri itself requires nightly Rust. This does not make the
+  crate require nightly for normal builds, tests, or releases.
+
+## Usage
+
+```bash
+cargo check
+cargo test --all-features
+```
+
+For local development, install the standard stable components:
+
+```bash
+rustup component add rustfmt clippy
+```
+
+## Related Work
+
+The full migration was completed through PR 48, which removed the nightly-only
+language features, migrated platform dependencies to crates.io releases, and
+updated CI/CD to use the stable toolchain. This document keeps issue 22's
+stable Rust requirement visible from the repository root.

changelog.d/20260418_issue_22_stable_rust_docs.md

@@ -0,0 +1,2 @@
+### Fixed
+- Updated installation and contributor documentation to reflect stable Rust 1.85+ support instead of the removed nightly toolchain requirement.