HelloThisWorld · HelloThisWorld · Aug 13, 2026 · Aug 13, 2026
@@ -1,5 +1,38 @@
 # Changelog
 
+## 1.4.0-alpha - 2026-08-13
+
+Alpha prerelease: the integration candidate of the Pane Search release,
+bundling the v1.3.1, v1.3.2, and v1.3.3 engineering checkpoints on top of
+v1.3.0-beta3 for manual validation. Published as a GitHub prerelease with
+the standard asset layout; GitHub Latest and WinGet keep pointing at the
+stable v1.2.0, and this alpha replaces v1.3.0-beta3 as the newest published
+prerelease. A `PASS` verdict from manual testing promotes this build to
+`1.4.0-beta`; a `FAIL` produces a fixed `1.4.1-alpha`.
+
+### Added
+
+- Pane Search, end to end: `Ctrl+F` opens Find in the active pane only
+  (`Ctrl+Shift+F` retained as a remappable alias), with live search over
+  the pane's entire scrollback, all-match highlighting, `Enter` /
+  `Shift+Enter` navigation with wrap-around, case-sensitive and regex
+  modes, and full input isolation from the shell (Phase 1, v1.3.1); the
+  winTerm compact search box with the `current / total` counter and
+  width-adaptive layouts, plus the scrollbar search overview with one
+  marker per matching row and current-match emphasis, independent of the
+  `ShowMarks` setting (Phase 2, v1.3.2); and performance/edge-case
+  hardening — per-pane typing coalescing, mid-output refresh convergence,
+  scrollbar repaint signatures, resize/reflow and alternate-screen safety,
+  eviction and Unicode coverage (Phase 3, v1.3.3).
+
+### Changed
+
+- Executable metadata major.minor advances to `1.4`; the release channel
+  switches to `alpha` with package version `1.4.0.0` and module prerelease
+  suffix `alpha`. The `v1.4.0-alpha` tag runs the full guarded release
+  pipeline (build, compiled tests, artifact generation, draft asset
+  round-trip testing) before the prerelease is published.
+
 ## 1.3.3 - 2026-08-12
 
 Engineering checkpoint for the Pane Search roadmap, Phase 3: performance and

@@ -15,10 +15,10 @@
 最新の安定版リリースページには、インストーラー（Setup EXE）、ポータブルZIP、
 リリースノート、チェックサムがまとめて掲載されています。
 
-Command Timelineを先行して試せる**ベータ版**のチャンネルもあります。
-[v1.3.0-beta3](https://github.com/HelloThisWorld/winTerm/releases/tag/v1.3.0-beta3)
+Pane Search（ペイン検索）を先行して試せる**アルファ版**のプレリリースもあります。
+[v1.4.0-alpha](https://github.com/HelloThisWorld/winTerm/releases/tag/v1.4.0-alpha)
 はGitHubのプレリリースとして公開されており、資産の構成は安定版と同じです。
-ベータ版は動作確認を目的とした配布のため、通常の利用には上記の安定版を推奨します。
+プレリリースは動作確認を目的とした配布のため、通常の利用には上記の安定版を推奨します。
 
 インストーラーは署名されていないため、Windowsに「不明な発行元」または
 SmartScreenの警告が表示される場合があります。必ず上記の公式リリースから
@@ -38,7 +38,7 @@ Microsoft、Windows、Windows Terminalのロゴも使用していません。
 - `winTerm-<version>-setup-x64.exe` — 現在のユーザー、または全ユーザーへのインストール用;
 - `winTerm-<version>-portable-x64.zip` — 展開してそのまま実行する用。
 
-現在のソースバージョンは `1.3.3` で、
+現在のソースバージョンは `1.4.0-alpha` で、
 最新の安定版リリースは `1.2.0` です。公開されている資産の一覧とチェックサムの全体は、
 [最新の公式リリース](https://github.com/HelloThisWorld/winTerm/releases/latest)
 を参照してください。
@@ -111,8 +111,8 @@ PowerShell 7と、[ビルド手順（英語）](docs/build.md)に記載された
 .\scripts\winterm\build.ps1 -Configuration Release -Platform x64 -IncludeTests
 .\scripts\winterm\test.ps1 -Suite Relevant -Configuration Release -Platform x64
 .\scripts\winterm\build-unpackaged.ps1 -Configuration Release -Platform x64
-.\scripts\winterm\build-installer.ps1 -Version 1.3.3 -Platform x64
-.\scripts\winterm\build-portable.ps1 -Version 1.3.3 -Platform x64
+.\scripts\winterm\build-installer.ps1 -Version 1.4.0-alpha -Platform x64
+.\scripts\winterm\build-portable.ps1 -Version 1.4.0-alpha -Platform x64
 ```
 
 アンパッケージ形式の生成処理では、統合されたリソースインデックスを作るための

@@ -13,11 +13,10 @@ English | [日本語](README.ja.md)
 The latest stable Release page provides the Setup EXE, Portable ZIP, release
 notes, and checksums together.
 
-A **beta** channel is also available for early access to the Command
-Timeline:
-[v1.3.0-beta3](https://github.com/HelloThisWorld/winTerm/releases/tag/v1.3.0-beta3)
-is published as a GitHub prerelease with the same asset layout. Betas are for
-testing; the stable release above stays the recommended download.
+An **alpha** prerelease is also available for early access to Pane Search:
+[v1.4.0-alpha](https://github.com/HelloThisWorld/winTerm/releases/tag/v1.4.0-alpha)
+is published as a GitHub prerelease with the same asset layout. Prereleases
+are for testing; the stable release above stays the recommended download.
 
 The installer is unsigned, so Windows may display Unknown Publisher or a
 SmartScreen warning. Download only from the official release above and verify
@@ -37,7 +36,7 @@ application downloads are:
 - `winTerm-<version>-setup-x64.exe` — current-user or all-users installation;
 - `winTerm-<version>-portable-x64.zip` — extract and run without installation.
 
-The current source version is `1.3.3`;
+The current source version is `1.4.0-alpha`;
 the latest stable release is `1.2.0`. See the
 [latest official Release](https://github.com/HelloThisWorld/winTerm/releases/latest)
 for the complete published asset list and checksums.
@@ -106,8 +105,8 @@ Use PowerShell 7 and the Microsoft Terminal toolchain described in
 .\scripts\winterm\build.ps1 -Configuration Release -Platform x64 -IncludeTests
 .\scripts\winterm\test.ps1 -Suite Relevant -Configuration Release -Platform x64
 .\scripts\winterm\build-unpackaged.ps1 -Configuration Release -Platform x64
-.\scripts\winterm\build-installer.ps1 -Version 1.3.3 -Platform x64
-.\scripts\winterm\build-portable.ps1 -Version 1.3.3 -Platform x64
+.\scripts\winterm\build-installer.ps1 -Version 1.4.0-alpha -Platform x64
+.\scripts\winterm\build-portable.ps1 -Version 1.4.0-alpha -Platform x64
 ```
 
 The unpackaged generator uses an unsigned MSIX only as an upstream build

@@ -5,7 +5,7 @@
     <XesUseOneStoreVersioning>true</XesUseOneStoreVersioning>
     <XesBaseYearForStoreVersion>2026</XesBaseYearForStoreVersion>
     <VersionMajor>1</VersionMajor>
-    <VersionMinor>3</VersionMinor>
+    <VersionMinor>4</VersionMinor>
     <VersionInfoProductName Condition="'$(WindowsTerminalBranding)'=='WinTerm'">winTerm</VersionInfoProductName>
     <VersionInfoProductName Condition="'$(VersionInfoProductName)'==''">Windows Terminal</VersionInfoProductName>
     <VersionInfoCulture>1033</VersionInfoCulture>

@@ -1,37 +1,38 @@
 # Current development progress
 
-Last updated: 2026-08-12
+Last updated: 2026-08-13
 
 ## Repository state
 
-- Branch: `feature/v1.3.3-pane-search-phase3`, based on `main` at
-  `97ecb7e85` (Pane Search Phase 2 checkpoint, pull request #45)
+- Branch: `release/v1.4.0-alpha`, based on `main` at
+  `e436fdf00` (Pane Search Phase 3 checkpoint, pull request #46)
 - Microsoft Terminal upstream revision:
   `1cea42d433253d95c4487a3037db48197b5e72f4`
-- Application version: `1.3.3`
-- Package/file version: `1.3.3.0`
-- PowerShell module version: `1.3.3` with no prerelease suffix
-- Release channel: `stable` (engineering checkpoint; nothing is published)
-- Checkpoint tag: `v1.3.3`, listed with the earlier checkpoint tags in the
-  release workflow so a pushed checkpoint tag runs quick validation only and
-  can never produce release artifacts
+- Application version: `1.4.0-alpha`
+- Package/file version: `1.4.0.0`
+- PowerShell module version: `1.4.0` with prerelease suffix `alpha`
+- Release channel: `alpha` (published as a GitHub prerelease)
+- Release tag: `v1.4.0-alpha`. This is not an engineering checkpoint: the
+  tag runs the full guarded release pipeline (build, compiled tests,
+  artifact generation, draft asset round-trip testing, then publication as
+  a prerelease). The checkpoint-tag allowlist is unchanged.
 - Current public Latest: `v1.2.0`, the stable Visual Progress release
-- Newest published prerelease: `v1.3.0-beta3` on the beta channel
+- Newest published prerelease: `v1.4.0-alpha` (replacing `v1.3.0-beta3`)
 - Supported target: Windows 11 x64
 
-`v1.3.3` is an engineering checkpoint, the third of the Pane Search roadmap
-toward v1.4. Like the v1.2.1 through v1.2.4 Command Timeline checkpoints, it
-is a source/development version only: no GitHub Release, website slot, or
-WinGet update is produced, and `/releases/latest` keeps resolving to v1.2.0.
+`v1.4.0-alpha` is the integration candidate of the Pane Search release. It
+bundles the three engineering checkpoints (`1.3.1`, `1.3.2`, `1.3.3`) for
+manual validation. `/releases/latest` keeps resolving to v1.2.0, and WinGet
+is not updated for prereleases.
 
 ## Pane Search status (v1.4 roadmap)
 
 - Phase 1 — active-pane search — complete at `1.3.1`.
 - Phase 2 — search UX and scrollbar overview — complete at `1.3.2`.
 - Phase 3 — performance and edge-case hardening — complete at `1.3.3`.
-- Final integration — `1.4.0-alpha`, promoted to beta only after manual
-  user validation. Starting `1.4.0-alpha` requires a separate instruction;
-  it is not begun automatically.
+- Final integration — `1.4.0-alpha` published for manual user validation.
+  `PASS` promotes to `1.4.0-beta`; `FAIL` produces a fixed `1.4.1-alpha`.
+  Only the user authorizes the alpha → beta promotion.
 
 Phase 1 made `Ctrl+F` (with the retained `Ctrl+Shift+F` alias) open the
 existing Microsoft Terminal search box inside the focused pane only,
@@ -189,12 +190,15 @@ through pull request #32:
 
 ## Next steps
 
-1. Final integration checkpoint `1.4.0-alpha`, then manual user validation
-   before any beta promotion. This stage requires a separate instruction
-   from the user; do not begin it automatically.
-2. Collect Command Timeline beta feedback; promote a stable `v1.3.0` only
-   after beta testing, which is the point at which Latest, WinGet, and the
-   website stable slot move.
+1. Manual user validation of the published `v1.4.0-alpha` prerelease
+   (typing responsiveness, continuous output, huge match counts, resize
+   and reflow, split panes, alternate-screen applications, Unicode
+   queries, rapid open/close). `PASS` promotes to `1.4.0-beta`; `FAIL`
+   produces a fixed `1.4.1-alpha`. Only the user authorizes the
+   promotion.
+2. Collect Command Timeline and Pane Search beta feedback; promote a
+   stable release only after beta testing, which is the point at which
+   Latest, WinGet, and the website stable slot move.
 
 ## Validation state
 

@@ -0,0 +1,77 @@
+# winTerm 1.4.0-alpha
+
+**This is an alpha prerelease.** The current stable release remains
+[v1.2.0](https://github.com/HelloThisWorld/winTerm/releases/tag/v1.2.0), and
+`/releases/latest` continues to point there. The alpha is published as a
+GitHub prerelease for manual validation; it is not submitted to WinGet and
+is not the recommended download for everyday use.
+
+winTerm 1.4.0-alpha is the integration candidate of the **Pane Search**
+release. It bundles the three engineering checkpoints of the Pane Search
+roadmap (v1.3.1, v1.3.2, v1.3.3) on top of v1.3.0-beta3 for hands-on
+testing before any beta promotion.
+
+## What is new since v1.3.0-beta3: Pane Search
+
+`Ctrl+F` opens Find in the **active pane only** (`Ctrl+Shift+F` stays as a
+compatibility alias; both chords are remappable). The proven Microsoft
+Terminal search pipeline is reused end to end — there is no second search
+engine, no index, and no buffer duplication.
+
+- **Search that follows your typing.** Results update live while you type,
+  across the pane's entire scrollback, with every match highlighted at
+  once. `Enter` / `Shift+Enter` step through matches with wrap-around;
+  case-sensitive and regular-expression modes are one toggle away; `Esc`
+  closes and returns focus to the shell. Typed characters never leak into
+  the terminal.
+- **The winTerm search box.** The pane-local box follows the winTerm
+  compact overlay language — search glyph, input, `current / total` match
+  counter, case/regex toggles, previous/next, close — and adapts to narrow
+  panes through layout states that always keep the input and the close
+  button usable. The counter keeps the familiar semantics, including
+  `No results`, the bounded `999+` form, and the invalid-regex message.
+- **A scrollbar search overview.** While search is open, the scrollbar
+  shows one marker per matching buffer row across the full scrollback,
+  with the current match's row emphasized at double width. The overview is
+  independent of the `showMarksOnScrollbar` setting (generic shell marks
+  keep obeying it), coexists with generic marks, disappears on close, and
+  respects a deliberately hidden scrollbar. Split panes keep fully
+  isolated search state, including their overview markers.
+- **Hardened for real workloads.** Rapid typing is coalesced per pane
+  (leading keystroke searches immediately; the latest query always wins).
+  An open search keeps converging while output streams continuously —
+  `tail -f`-style logs update the counter, highlights, and overview
+  instead of freezing them — and a closed search costs the terminal
+  nothing. Scrolling with very large result sets no longer repaints
+  identical scrollbar pixels. Pane resize/reflow, scrollback eviction,
+  alternate-screen applications (`vim`, `less`, TUIs), wide characters
+  (CJK, emoji), and invalid regular expressions are all covered by
+  deterministic regression tests.
+
+## What to validate in this alpha
+
+This build exists for manual confirmation of the Pane Search experience
+under real use: typing responsiveness at large scrollback, continuous
+output with an open search, huge match counts, pane resize and reflow,
+multiple panes with independent searches, alternate-screen entry/exit,
+Unicode queries, and rapid open/close. A `PASS` verdict promotes this
+build to `1.4.0-beta`; a `FAIL` produces a fixed `1.4.1-alpha`.
+
+## Everything in v1.3.0-beta3 is included
+
+The Command Timeline, Visual Progress, shell integration, Workspaces,
+pane management, and all fixes through v1.3.0-beta3 ship unchanged in
+this alpha.
+
+## Downloads
+
+- `winTerm-1.4.0-alpha-setup-x64.exe` — current-user or all-users
+  installation.
+- `winTerm-1.4.0-alpha-portable-x64.zip` — extract and run without
+  installation (creates `portable.marker` alongside the executable).
+- `SHA256SUMS.txt` — checksums for both application assets; verify before
+  running.
+
+Requires Windows 11 x64. winTerm is an independent open-source project
+based on Microsoft Terminal source code; it is not a Microsoft product and
+is not affiliated with or endorsed by Microsoft.
@@ -32,9 +32,9 @@ foreach ($relativePath in $sourceAssets)
 }
 
 $version = Get-Content -LiteralPath (Join-Path $repositoryRoot 'shell\shared\version.json') -Raw | ConvertFrom-Json
-if ($version.moduleVersion -ne '1.3.3' -or
-    $version.modulePrerelease -ne '' -or
-    $version.applicationVersion -ne '1.3.3' -or
+if ($version.moduleVersion -ne '1.4.0' -or
+    $version.modulePrerelease -ne 'alpha' -or
+    $version.applicationVersion -ne '1.4.0-alpha' -or
     $version.protocolVersion -ne 1)
 {
     throw 'The winTerm Shell asset version metadata is invalid.'