docs(README): corpus scoreboard 307/311 → 309/311 after #156 (warmup reconfigs + exact-order SMA) - #157

* docs: release notes and version scoping for v1.0.1

v1.0.1 is a documentation-only release that pairs with pineforge-codegen
1.0.1 (codegen #156, #157: history reads of objects, drawings, arrays and
matrices whose C++ did not compile now compile, and an int na given to a
float field reads na). Since v1.0.0 only Markdown changed (#309, #310): no
file under src/, include/, cmake/ or examples/, no CMake file, and
docker/run_json.py is unchanged, so the C ABI, the script ABI epoch and
the JSON report keys are v1.0.0's.

- CHANGELOG.md: "1.0.1 — 2026-10-02".
- README.md: front door 1 and the runtime-not-compiler line install
  pineforge-codegen==1.0.1; the prebuilt library names the v1.0.1
  tarballs; the pairing sentence, the scoreboard, the benchmark line and
  the Releases list name 1.0.1. The MCP image line names no version (its
  engine_info tool reports it), as codegen #155 did for its hosted-server
  line.
- docs/pages/install.md: the v1.0.1 tarballs and the hub tag
  engine1.0.1-codegen1.0.1.
- docs/pages/public-contract.md: 1.0.1's release line, and engine v1.0.1
  with codegen 1.0.1 among the supported pairs.

Lines that state what v1.0.0 or codegen 1.0.0 shipped or did (coverage,
ABI history, the version.h and find_package examples, the hub 1.0.0
image's tutorial numbers) stay.

Replaces text introduced by c5383e6 (#309): README.md's "The image
bundles engine v1.0.0 with codegen 1.0.0." and public-contract.md's
release line, which now runs on into 1.0.1's.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

* docs: the 1.0.1 code was graded before it merged, with no tier change

Replaces text introduced by cca621c (this branch's first commit):
README.md's "The 1.0.1 releases (2026-10-02) were not re-graded"
sentence, which the pre-merge grading of the 1.0.1 code supersedes.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFVRQ4gcJCLbjfYqGtmy4k

---------

Co-authored-by: Claude Opus 5.5 (1M context) <[email protected]>