Refresh implemented roadmap status

Author: eldryoth

CHANGELOG.md

@@ -6,11 +6,13 @@
 - Added strict standard and URL-safe Base64 engines.
 - Added caller-owned encode/decode buffers and in-place decode.
 - Added in-place encoding.
-- Added optional `alloc` vector helpers.
+- Added stable compile-time encoding into caller-sized arrays.
+- Added optional `alloc` vector and encoded string helpers.
 - Added `std::io::Write` and `std::io::Read` streaming encoders behind the `stream` feature.
 - Added `std::io::Write` streaming decoder behind the `stream` feature.
 - Added `std::io::Read` streaming decoder behind the `stream` feature.
 - Added checked encoded-length helpers.
 - Added exact decoded-length helpers.
 - Hardened decode errors to report absolute input indexes.
+- Added Miri support in CI and the local release gate when installed.
 - Added project plan, security policy, local gates, CI, dependency policy, SBOM script, and reproducible build script.

docs/PLAN.md

@@ -12,7 +12,7 @@ Build `base64-ng` as a modern, secure, `no_std`-first Base64 implementation for
 - License: `MIT OR Apache-2.0`.
 - Project name: `base64-ng`.
 - Runtime and dev dependency graph: zero external crates.
-- Local testing system modeled after `fluxheim`: check script, release gate, dependency policy, audit config, SBOM, reproducible build check, and CI.
+- Local testing system modeled after `fluxheim`: check script, release gate, dependency policy, audit config, Miri when installed, SBOM, reproducible build check, and CI.
 
 ## Dependency Policy
 
@@ -66,7 +66,8 @@ Any dependency addition must answer:
    - No unsafe code.
 
 2. `alloc`
-   - Future `Vec<u8>` and `String` helpers.
+   - `Vec<u8>` decode/encode helpers.
+   - Encoded `String` helper.
    - Optional feature.
 
 3. `simd`
@@ -76,7 +77,7 @@ Any dependency addition must answer:
    - Unsafe isolated and documented.
 
 4. `stream`
-   - Future `std::io::{Read, Write}` wrappers.
+   - `std::io::{Read, Write}` wrappers.
    - Chunk-boundary state machines.
 
 5. `tokio`
@@ -135,15 +136,18 @@ Phase 3:
 - Standard and URL-safe alphabets.
 - Padded and unpadded modes.
 - Caller-owned output buffers.
+- Stable compile-time encoding into caller-sized arrays.
+- `alloc` `Vec<u8>` and encoded `String` helpers.
+- `std::io` streaming wrappers.
+- Miri integrated into CI and the local release gate when installed.
+- In-place encoding.
 - In-place decoding.
 - Hardened test/release scripts.
 
 ### v0.2
 
-- `alloc` convenience APIs.
 - Explicit legacy decode mode.
 - More exhaustive malformed-input tests.
-- Miri integration.
 
 ### v0.3
 
@@ -160,10 +164,6 @@ Phase 3:
 
 ### v0.5
 
-- Broader chunk-boundary state machine tests.
-
-### v0.6
-
 - Tokio streaming wrappers.
 - Async cancellation and partial-read tests.