Add v1.9.0 blog post and changelog entry

Author: shouze

CHANGELOG.md

@@ -4,8 +4,9 @@ Release notes and changelogs are published on the **[project blog](https://fulll
 
 Each release entry covers the motivation, new features, breaking changes (if any), and upgrade notes.
 
-| Version                                                                  | Blog post                                                                                                       |
-| ------------------------------------------------------------------------ | --------------------------------------------------------------------------------------------------------------- |
+| Version                                                                  | Blog post                                                                                                              |
+| ------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------- |
+| [v1.9.0](https://fulll.github.io/github-code-search/blog/release-v1-9-0) | Windows support — native x64, x64-modern, x64-baseline and ARM64 binaries with one-line PowerShell installer          |
 | [v1.8.3](https://fulll.github.io/github-code-search/blog/release-v1-8-3) | Fix TUI layout: header/footer anchoring, viewport packing, narrow-terminal clipping, active-row contrast        |
 | [v1.8.2](https://fulll.github.io/github-code-search/blog/release-v1-8-2) | Fix rate-limit errors aborting multi-page searches; auto-wait and retry with live progress                      |
 | [v1.8.1](https://fulll.github.io/github-code-search/blog/release-v1-8-1) | Fix silent hang after pagination bar — concurrency cap + progress bar for line-number resolution                |

docs/blog/index.md

@@ -11,6 +11,7 @@ Full release notes and changelogs are always available on
 
 | Release                    | Highlights                                                                                                 |
 | -------------------------- | ---------------------------------------------------------------------------------------------------------- |
+| [v1.9.0](./release-v1-9-0) | Windows support — native x64, x64-modern, x64-baseline and ARM64 binaries with one-line PowerShell install |
 | [v1.8.3](./release-v1-8-3) | Fix TUI layout: header/footer anchoring, viewport packing and narrow-terminal rendering                    |
 | [v1.8.2](./release-v1-8-2) | Fix rate-limit errors aborting multi-page searches — auto-wait and resume with live feedback               |
 | [v1.8.1](./release-v1-8-1) | Fix silent hang after pagination bar — concurrency cap + progress bar for line-number resolution           |

docs/blog/release-v1-9-0.md

@@ -0,0 +1,65 @@
+---
+title: "What's new in v1.9.0"
+description: "github-code-search is now available on Windows — native x64, x64-modern (AVX2), x64-baseline and ARM64 binaries"
+date: 2026-03-11
+---
+
+# What's new in github-code-search v1.9.0
+
+> Full release notes: <https://github.com/fulll/github-code-search/releases/tag/v1.9.0>
+
+## Highlights
+
+### Windows support — four native architectures
+
+`github-code-search` now ships pre-built `.exe` binaries for Windows:
+
+| Binary                                      | Target CPU                              |
+| ------------------------------------------- | --------------------------------------- |
+| `github-code-search-windows-x64-modern.exe` | AVX2 / SSE4.2 (most CPUs since ~2013)   |
+| `github-code-search-windows-x64-baseline.exe` | Any x86-64 CPU                        |
+| `github-code-search-windows-x64.exe`        | Legacy alias for backward compatibility |
+| `github-code-search-windows-arm64.exe`      | ARM64 (Snapdragon X, Surface Pro X …)   |
+
+The installer picks the best variant for your machine automatically and falls
+back through `x64-modern → x64-baseline → x64` if a variant is missing from
+a given release.
+
+### One-line PowerShell installer
+
+Installing from an elevated PowerShell prompt is now a single command:
+
+```powershell
+irm https://github.com/fulll/github-code-search/install.ps1 | iex
+```
+
+The script detects your architecture, downloads the optimal binary to
+`%LOCALAPPDATA%\github-code-search`, and adds the directory to your user `PATH`
+automatically.
+
+To install a specific version or architecture:
+
+```powershell
+irm https://github.com/fulll/github-code-search/install.ps1 | iex
+# or
+Invoke-RestMethod https://github.com/fulll/github-code-search/install.ps1 | Invoke-Expression
+```
+
+### EXE metadata and icon
+
+The Windows binaries embed proper file metadata (title, publisher, version,
+description, copyright) so they show correctly in Explorer file properties and
+are not mis-identified as generic `bun` processes.  
+A multi-resolution `.ico` icon (16×16 → 256×256) is also baked into the binary,
+making the executable recognisable in taskbar, `Alt+Tab` and file dialogs.
+
+---
+
+## Upgrade
+
+```sh
+github-code-search upgrade
+```
+
+Or download the latest binary from
+[GitHub Releases](https://github.com/fulll/github-code-search/releases/tag/v1.9.0).