docs: add retrospective CHANGELOG for v0.1.0

Author: CameronBrooks11

CHANGELOG.md

@@ -0,0 +1,55 @@
+# Changelog
+
+All notable changes to `anolis-provider-sim` are documented in this file.
+
+The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+Historical note: this changelog was written retrospectively from git history at the
+time of the first tagged release (`v0.1.0`). Earlier development was tracked in
+commit messages only.
+
+---
+
+## [Unreleased]
+
+## [0.1.0] - 2026-04-20
+
+First tagged release. The simulator was developed in full before tagging; this
+entry summarizes the meaningful work that landed prior to `v0.1.0`.
+
+### Added
+
+- Full ADPP v1 device provider implementation over gRPC: `Handshake`, `Health`,
+  `ListDevices`, `DescribeDevice`, `ReadDevice`, `CallDevice`, `StreamTelemetry`.
+- Simulated device family: configurable multi-device inventory loaded from YAML
+  config, with per-device capability surface matching RLHT and DCMT contracts.
+- FluxGraph integration path: optional `ANOLIS_PROVIDER_SIM_ENABLE_FLUXGRAPH`
+  build flag wires a FluxGraph engine into the sim tick loop for signal-graph
+  driven simulation. Kept as explicit opt-in; baseline binary has no FluxGraph
+  dependency.
+- Strict/degraded startup policy: provider validates config and device
+  initialization before accepting connections; rejects partial startup with clear
+  diagnostics.
+- `--check-config` flag for config validation without starting the server.
+- Dedicated logging infrastructure with structured log levels; migrated all
+  diagnostic output from raw stdout.
+- C++ unit tests via GoogleTest (vcpkg); integration tests via pytest with a
+  shared test harness and CTest registration.
+- Provider-label CTest filtering (`-L provider`) for isolated test execution.
+- Warnings-as-errors enforced on `ci-linux-release-strict` preset.
+- TSAN build support via dedicated preset for data-race validation.
+- CI: Linux build/test/strict lane and Windows build lane; shared org workflows.
+- Release workflow: on `v*` tag, builds `ci-linux-release-strict`, packages
+  binary + source tarball + `manifest.json` + `SHA256SUMS`.
+
+### Changed
+
+- Migrated protocol source from `external/anolis` to `external/anolis-protocol`
+  submodule after protocol repository extraction.
+- Preset naming consolidated to `ci-linux-release-strict` as the primary CI
+  lane; FluxGraph advisory lane remains separate.
+- Wrapper scripts removed; all build/test commands use CMake/CTest presets
+  directly.
+- License changed to AGPL-3.0.
+- Org renamed from `FEASTorg` to `anolishq` throughout.