diff --git a/.gitattributes b/.gitattributes
index d80940da..adeb3c3b 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -5,3 +5,6 @@
*.py text eol=lf
*.ps1 text eol=crlf
experiments/core/fixtures/*.bin binary
+# Preserve upstream license bytes and unified-diff context prefixes.
+research/msys-runtime-window-prefix/CYGWIN_LICENSE whitespace=-blank-at-eol,-blank-at-eof
+research/msys-runtime-window-prefix/window-prefix.patch whitespace=-blank-at-eol,-space-before-tab
diff --git a/docs/EVIDENCE.md b/docs/EVIDENCE.md
index eca30d7e..667fc374 100644
--- a/docs/EVIDENCE.md
+++ b/docs/EVIDENCE.md
@@ -10,7 +10,7 @@
|---|---|
| main 默认：自研核心 + 系统 ConPTY | R1 限定总验收和有限 VT/Unicode 子集；默认构建不需要 Rust |
| main 显式候选：`termforge.4` + 系统 ConPTY | [固定来源/补丁台账](../experiments/candidates/alacritty/PROVENANCE.md)、[适配边界](../experiments/core/CANDIDATE.md)、[#39 字素合同](research/streaming-graphemes.md)；仅按已有合同验收 |
-| PR #50 实验：`termforge.5` + 固定官方 ConPTY | [Draft PR](https://github.com/JavaZeroo/termforge/pull/50) / [#47](https://github.com/JavaZeroo/termforge/issues/47)；旧`.4`的[联合基线](research/joint-conpty-baseline.md)保留。#51/#53/#87/#88各自限定交付见下表；最新完整官方56/57，#52仍失败，MSYS输入边界仅为诊断；#63已复现工作区路径的因果核验及完整shell通过见下表；更早缺运输样本保留未知。当前能力以[FEATURES](FEATURES.md)为准 |
+| PR #50 实验：`termforge.5` + 固定官方 ConPTY | [Draft PR](https://github.com/JavaZeroo/termforge/pull/50) / [#47](https://github.com/JavaZeroo/termforge/issues/47)；旧`.4`的[联合基线](research/joint-conpty-baseline.md)保留。#51/#53/#87/#88各自限定交付见下表；最新完整官方56/57，#52原固定运行库仍失败，MSYS输入边界与隔离运行库修补结果分列；#63已复现工作区路径的因果核验及完整shell通过见下表；更早缺运输样本保留未知。当前能力以[FEATURES](FEATURES.md)为准 |
R1 固定总出口的源码为 `ce9b24d`，早期 `2dc8d6d` / `9b16acc` 仍分别只代表原记录。源 VT、原生控制台 CHAR_INFO、transport、末端状态、自有 DIB、绘制提交和真实呈现是不同检查点；未知端点保持未知。
@@ -57,6 +57,7 @@ R1 固定总出口的源码为 `ce9b24d`，早期 `2dc8d6d` / `9b16acc` 仍分
| Native Vim 捕获目录隔离 | [原因与复验](research/vim-fixture-isolation.md)、[固定原件审计](../experiments/conpty/results/2026-10-26-vim-fixture-isolation/validation.json) | 实验分支同旧 EXE 的兄弟运行一绿一红；修正新目录隔离后完整模块9/9。仅闭合 #52 native 夹具原因；GUI stage59 仍开放，未知与受扰动探针分列。 |
| 工作区尺寸标记残尾（#63） | [原因与复验](research/workspace-native-viewport.md)、[单变量/原生/回放及无插桩验收](../experiments/shell/results/2026-10-27-workspace-native-viewport/validation.json) | 旧原三轮UI/main第三轮各红；同EXE仅切策略分别原红/绿，原生尺寸和标记正确、底部核心残尾。现有#51修复覆盖；无插桩原三轮各重复两批、完整shell37通过/3原skip、93.62秒，#52和完整R2仍未验收。 |
| GUI Vim/MSYS 输入边界（#52） | [运行时边界与限制](research/vim-msys-input-boundary.md)、[白名单事件与身份](../experiments/shell/results/2026-10-27-vim-msys-input/validation.json) | 两轮API级原失败、一轮诊断绿及一轮函数边界原失败：完整93 B到达原生输入，红例MSYS仅交付92 B；resize旧快照清理取走Ctrl-O的调用顺序已捕获。无截断、Job0/desktopgone；未修产品、未替换固定应用，#52继续开放。 |
+| GUI Vim/MSYS 隔离运行库补丁（#52） | [实验与限制](research/vim-msys-runtime-prototype.md)、[许可与补丁](../research/msys-runtime-window-prefix/README.md)、[七轮白名单记录](../experiments/shell/results/2026-10-27-vim-msys-runtime-prototype/validation.json) | 原 DLL 两轮一绿一 stage59，未修重建 DLL 首轮 stage59；只调整 resize 前缀消费的重建 DLL 两批共四轮原方法通过，七轮均完整回收。无新 API/加载模块轨迹，未验证鼠标/实际 longjmp 或完整 CTest；正式固定运行库验收、兼容策略及 #52 保持开放。 |
| 原生 viewport resize 与默认策略隔离（#51） | [原因与复现](research/native-viewport-resize.md)、[固定验证及六组合成原件](../experiments/conpty/results/2026-10-27-native-viewport-resize/validation.json) | 原 `.4` GUI stage43 与独立 native/replay 红；`.5` 原 resize/Unicode、历史/空格复制、六组 native 对照通过。默认策略填充误判经实际红绿修复；最终完整回归 54/56、12 项内部 skip，#52/#88 及此前 #87 的失败独立保留，不计完整后端或 WindTerm 等价。 |
| 窄列命令回显与恢复完成（#88） | [独立判据合同](research/workspace-restore-transport-oracle.md)、[原件哈希/红绿/正式两轮验证](../experiments/shell/results/2026-10-27-workspace-echo-cr/validation.json) | 原 262 B cmd 运输中的回显裸 CR 使完成判据提前拒绝；修正仅使该记录保持不可信至真实 LF。原两轮保存/普通恢复/钳制及完整 shell 通过；官方完整回归 55/56、8 项内部 skip，#52 当时仍红，#63/#87 旧因未闭合（#87 后续见下一行）。构建重叠结果明确排除。 |
| 替换会话完整记录检查点（#87） | [机制、因果与边界](research/workflow-record-checkpoint.md)、[固定源码及原两轮验证](../experiments/shell/results/2026-10-27-workflow-record-checkpoint/validation.json) | 旧判据在真实消费半行时采样而红，同 session 后续字节补齐；被动等待方案因输出结束而红。默认关闭的有界 LF 检查点受控通过，最终 c662011 两轮原八会话及关闭 guard 通过；完整官方 56/57、8 项内部 skip，Vim59 仍红。历史两份 native 后续缺口、诊断 trace 截断及未复现分别保留。 |
diff --git a/docs/FEATURES.md b/docs/FEATURES.md
index 5be241e4..681b95ec 100644
--- a/docs/FEATURES.md
+++ b/docs/FEATURES.md
@@ -14,7 +14,7 @@
|---|---|---|
| 默认 main：自研核心 + 系统 ConPTY | 默认构建与已发布 Alpha 的基础路线，不需要 Rust | 已有 R1 限定验收；VT/Unicode 能力仍为有限子集，不能引用候选核心的字素或 TUI 结果 |
| 显式候选 main：`termforge.4` + 系统 ConPTY | `TERMFORGE_BUILD_CANDIDATE_ADAPTER=ON`；按 [ADR-0003](adr/0003-core-reference-and-reuse.md)保留为可评估实验，正式核心选型待用户确认 | [固定来源](../experiments/candidates/alacritty/PROVENANCE.md)、[适配边界](../experiments/core/CANDIDATE.md)与 [#39 字素合同](research/streaming-graphemes.md)；候选正确性通过不关闭系统 ConPTY 或 R2 父项 |
-| 实验分支：`termforge.5` + 固定官方 ConPTY | [PR #50（Draft）](https://github.com/JavaZeroo/termforge/pull/50)，`.4` 联合源码 `3e5b96d` 的[真实基线](research/joint-conpty-baseline.md)保留，尚未合并 main 或通过产品整体验收 | [#51 原生 viewport 修复](research/native-viewport-resize.md)的原 resize/Unicode 及原生样本、[#88 回显完成判据](research/workspace-restore-transport-oracle.md)的原保存/恢复/钳制分别通过；[#87 完整记录检查点](research/workflow-record-checkpoint.md)有受控旧红/新绿及最终同源码两轮原八会话 data-only。最新官方完整回归 56/57、8 项内部 skip，[Vim #52](https://github.com/JavaZeroo/termforge/issues/52)仍红，[MSYS输入边界](research/vim-msys-input-boundary.md)已定位捕获样本的Ctrl-O丢失位置但未修复，[#63 工作区残尾](research/workspace-native-viewport.md)已由同EXE单变量与运输回放确认现有viewport修复覆盖，原UI/主区三轮重复两批及完整shell通过；更早缺运输样本保留未知。[#53 UI fence](research/ui-paste-fence.md)与[行键复用/关闭回复](research/resize-replay-cost.md)、[#62 worker 夹具](research/sender-fence.md)各自限定通过。终端 margin 与原生状态分列，#47 及完整后端仍开放；旧失败和历史运输缺口保留 |
+| 实验分支：`termforge.5` + 固定官方 ConPTY | [PR #50（Draft）](https://github.com/JavaZeroo/termforge/pull/50)，`.4` 联合源码 `3e5b96d` 的[真实基线](research/joint-conpty-baseline.md)保留，尚未合并 main 或通过产品整体验收 | [#51 原生 viewport 修复](research/native-viewport-resize.md)的原 resize/Unicode 及原生样本、[#88 回显完成判据](research/workspace-restore-transport-oracle.md)的原保存/恢复/钳制分别通过；[#87 完整记录检查点](research/workflow-record-checkpoint.md)有受控旧红/新绿及最终同源码两轮原八会话 data-only。最新官方完整回归 56/57、8 项内部 skip，[Vim #52](https://github.com/JavaZeroo/termforge/issues/52)仍红，[MSYS输入边界](research/vim-msys-input-boundary.md)已定位捕获样本的Ctrl-O丢失位置，后续[隔离运行库补丁](research/vim-msys-runtime-prototype.md)在重建基点red后原方法四轮通过；正式固定运行库验收未完成，[#63 工作区残尾](research/workspace-native-viewport.md)已由同EXE单变量与运输回放确认现有viewport修复覆盖，原UI/主区三轮重复两批及完整shell通过；更早缺运输样本保留未知。[#53 UI fence](research/ui-paste-fence.md)与[行键复用/关闭回复](research/resize-replay-cost.md)、[#62 worker 夹具](research/sender-fence.md)各自限定通过。终端 margin 与原生状态分列，#47 及完整后端仍开放；旧失败和历史运输缺口保留 |
以下能力默认指已合并实现；某个配置的通过结果不能转用于另一个配置。R1 的真实系统 CF/拼音验收属于固定自研核心配置，不外推到候选 `.4` 或实验后端联合配置。
@@ -35,7 +35,7 @@
| Unicode 与文字显示 | **实现中，未验收**：默认自研保留 Unicode 15。显式候选 `.4` 的 [#39 Unicode 17 流式字素合同](research/streaming-graphemes.md)已限定验收：固定 ZWJ/keycap 的单 lead/两列、光标、SGR/查询、原子选择复制、单列 resize 与有界无损分片；实际 ConPTY/DWrite 核对固定样本的单 glyph、字体和网格 | [#30](https://github.com/JavaZeroo/termforge/issues/30) 仍需完整输入/IME 交叉；所有脚本/整形、通用 fallback、所有原生重放、真彩色/更多属性、Powerline 和真实跨屏未验收。分段 helper 的规范数据通过不代表完整终端 Unicode 正确性；[#54](https://github.com/JavaZeroo/termforge/issues/54) 保留已观察的性能成本 | R2 / R4 |
| resize 与 reflow | **限定验收**：默认按 ADR-0005 物理行裁剪；候选在[固定 ConPTY 重放](../experiments/core/results/2026-10-26-resize-replay/validation.json)与连续同步中保持行身份、Find/选区和有界历史，淘汰/清空不复活；候选 `.4` 另覆盖主/备用屏缩到单列 | [#29](https://github.com/JavaZeroo/termforge/issues/29) 的完整 resize 交叉未完成；固定事务不等于完整 reflow 或 WindTerm 等价。系统/实验 ConPTY、备用屏/滚动区、真实 DPI、呈现、性能及 #36/#38 分别验收；默认缩窄不可恢复 | R2 |
| 本地 shell 选择 | **实现中，未验收**：`ShellLaunch` 分离可执行文件、参数、工作目录及 shell 命令差异；cmd、Windows PowerShell 5.1、PowerShell 7、显式 Ubuntu WSL 各有[两轮真实启动/目录/尺寸/正常退出证据](../experiments/shell/results/2026-10-24-r2-shell-lifecycle/validation.json)，无效程序启动错误可见且可关闭后恢复 cmd | 仅声明上述固定入口和隔离目录；任意 profile/参数、通用分屏/排序、全部运行时错误提示及管理员 shell 未完成 | R2；权限场景 R4 |
-| 常用 TUI | **实现中，未验收**：显式候选 + 系统 ConPTY 有固定 Vim 进入、编辑、60×12 resize、退出写盘、主屏恢复及光标回复的[产品证据](../experiments/core/CANDIDATE.md)；More 尾部 ECH 与捕获端点有[限定修复](research/more-capture-ech.md) | [#28](https://github.com/JavaZeroo/termforge/issues/28) 的更多应用及完整输入/输出模式未完成；PR #50 实验后端的 GUI Vim [#52](https://github.com/JavaZeroo/termforge/issues/52) 仍有失败，[MSYS输入观测](research/vim-msys-input-boundary.md)不构成修复；[native 捕获目录复用](research/vim-fixture-isolation.md)已独立定位并修正，不能代替 GUI 或完整 TUI 验收。headless 比较与自有 DIB 不等于真实呈现，`presented_done=null` | R2 |
+| 常用 TUI | **实现中，未验收**：显式候选 + 系统 ConPTY 有固定 Vim 进入、编辑、60×12 resize、退出写盘、主屏恢复及光标回复的[产品证据](../experiments/core/CANDIDATE.md)；More 尾部 ECH 与捕获端点有[限定修复](research/more-capture-ech.md) | [#28](https://github.com/JavaZeroo/termforge/issues/28) 的更多应用及完整输入/输出模式未完成；PR #50 实验后端的 GUI Vim [#52](https://github.com/JavaZeroo/termforge/issues/52) 仍有失败，[MSYS输入观测](research/vim-msys-input-boundary.md)及[隔离运行库修补实验](research/vim-msys-runtime-prototype.md)不替代原固定运行库验收；[native 捕获目录复用](research/vim-fixture-isolation.md)已独立定位并修正，不能代替 GUI 或完整 TUI 验收。headless 比较与自有 DIB 不等于真实呈现，`presented_done=null` | R2 |
## 工作区与会话
diff --git a/docs/PROVENANCE.md b/docs/PROVENANCE.md
index f962d8f9..ff4846d4 100644
--- a/docs/PROVENANCE.md
+++ b/docs/PROVENANCE.md
@@ -18,6 +18,8 @@
## 已使用的第三方数据
+- `research/msys-runtime-window-prefix/`：外部运行库的隔离研究补丁，来源为 `git-for-windows/msys2-runtime` 固定提交 `2e2ef940151485490aff0c7b00c00965ef7a71a4` 的 `winsup/cygwin/fhandler/console.cc`；修改 resize 输入前缀的消费顺序，适用上游 LGPLv3-or-later 及 `CYGWIN_LICENSE` 中的 Linking Exception。完整上游许可、补丁与来源见[目录说明](../research/msys-runtime-window-prefix/README.md)。这不是 WindTerm 源码，不是产品依赖，也不进入默认构建或发布包；不由项目 MIT 覆盖。编译/隔离 Vim 结果及未验边界见[实验记录](research/vim-msys-runtime-prototype.md)。
+
- `assets/fonts/RobotoMono-Regular.ttf`：从 Google Fonts 的 RobotoMono 官方仓库固定提交独立取得，未修改；适用 SIL Open Font License 1.1，完整版权与许可证随字体分发。字体源码、固定版本、原始链接、字节数和 SHA-256 见[字体来源](../assets/fonts/README.md)。只在 TermForge 进程内作为工作区 UI 字体加载；不是从 WindTerm 提取的资源，不受项目 MIT 许可证覆盖。
- 差分测试依赖 `pyte 0.8.2`（LGPLv3）和 `wcwidth 0.2.13`（MIT），固定 wheel 哈希并保留原包许可；没有复制其源码或将其作为产品组件。版本、官方来源与适配边界见[差分说明](../experiments/differential/README.md)。原创项目许可证不替代这些依赖的许可证。
diff --git a/docs/milestones/R2-local-terminal.md b/docs/milestones/R2-local-terminal.md
index 33b41690..07606ed3 100644
--- a/docs/milestones/R2-local-terminal.md
+++ b/docs/milestones/R2-local-terminal.md
@@ -44,7 +44,7 @@ flowchart LR
## 下一批的任务边界
-1. **在已冻结基线上逐项闭合后端回归。** #55 已交付含红的真实基线；接续 #52 的 GUI Vim 失败。#62 的[真实 writer 持块、取消与停止夹具](../research/sender-fence.md)不降低原 4MiB/16KiB/期限，#53 已接入默认关闭的 fence，[单窗口 UI/3MB/768B 与控制故障切片](../research/ui-paste-fence.md)及[同源码两轮原八会话data-only](../research/resize-replay-cost.md)已通过；[#51 原生 viewport 修复](../research/native-viewport-resize.md)的原 resize 与 Unicode、[#88 回显完成判据](../research/workspace-restore-transport-oracle.md)的原保存/恢复/钳制限定回归通过；[#87 完整记录检查点](../research/workflow-record-checkpoint.md)已具有受控因果红绿及同源码两轮原八会话 data-only。[#63 工作区尺寸标记残尾](../research/workspace-native-viewport.md)已核验现有viewport修复覆盖，并通过原三轮重复与180秒完整shell合同。完整官方回归中的 Vim、更早缺运输的工作区失败及历史聚合期限证据分别保留，#87 的历史运输缺口不追溯补造，真实 CF/IME 组合独立验收。各回归可用原冻结输入独立定位，最终修复验收须在联合配置重建；一次未复现不自动构成因果修复。
+1. **在已冻结基线上逐项闭合后端回归。** #55 已交付含红的真实基线；接续 #52 的 GUI Vim 失败；[隔离运行库修补实验](../research/vim-msys-runtime-prototype.md)已提供基点red与补丁green，原固定运行库兼容方案及正式验收仍需闭合。#62 的[真实 writer 持块、取消与停止夹具](../research/sender-fence.md)不降低原 4MiB/16KiB/期限，#53 已接入默认关闭的 fence，[单窗口 UI/3MB/768B 与控制故障切片](../research/ui-paste-fence.md)及[同源码两轮原八会话data-only](../research/resize-replay-cost.md)已通过；[#51 原生 viewport 修复](../research/native-viewport-resize.md)的原 resize 与 Unicode、[#88 回显完成判据](../research/workspace-restore-transport-oracle.md)的原保存/恢复/钳制限定回归通过；[#87 完整记录检查点](../research/workflow-record-checkpoint.md)已具有受控因果红绿及同源码两轮原八会话 data-only。[#63 工作区尺寸标记残尾](../research/workspace-native-viewport.md)已核验现有viewport修复覆盖，并通过原三轮重复与180秒完整shell合同。完整官方回归中的 Vim、更早缺运输的工作区失败及历史聚合期限证据分别保留，#87 的历史运输缺口不追溯补造，真实 CF/IME 组合独立验收。各回归可用原冻结输入独立定位，最终修复验收须在联合配置重建；一次未复现不自动构成因果修复。
2. **并行处理原版对照、平台语义与性能。** [原生语义处理路径 #56](https://github.com/JavaZeroo/termforge/issues/56)先明确 #41 原合同需要什么、哪些路径可支持；保留必要的上游或独立实现工作，不用“平台不同”豁免缺口。#3/#4 优先建立原版 Windows 本地终端基线；#54 现在冻结重复方法与完成端点并定位吞吐成本，数值预算作为提案交用户确认，不等到 #34 才补性能。
3. **在主线推进独立行为合同。** #29 核对极窄/极短、软硬行、历史/淘汰、选择/Find、连续 resize 和 child ack；#30 核对 IME 组合/提交/取消与输出/resize/切换、应用键盘/粘贴接收、实际复制及同次八会话。已验收的 #39 只提供首批字素基础，最终配置的交叉验收仍需执行。
4. **补终端模式和应用矩阵。** #27 明确 DECOM/DECAWM、pending-wrap、保存恢复、异常序列与 margin×resize；#28 先固定应用版本/入口/动作及协议字节预期，再逐应用完成进入、操作、resize、退出、主屏恢复。Vim 的一个修复不替代完整 TUI 验收。
diff --git a/docs/research/vim-msys-input-boundary.md b/docs/research/vim-msys-input-boundary.md
index e6733236..9df5b4ec 100644
--- a/docs/research/vim-msys-input-boundary.md
+++ b/docs/research/vim-msys-input-boundary.md
@@ -1,6 +1,6 @@
# Vim resize 后 Ctrl-O 的输入边界
-[#52](https://github.com/JavaZeroo/termforge/issues/52) 的 GUI stage59 仍未修复。新的有界运行时记录将捕获到的失败定位在 MSYS 控制台事件到 `read(0)` 的转换：TermForge 成功写出完整 93 B，原生输入也包含 Ctrl-O，但 Vim 收到的读结果仅剩其后 92 B。本文记录诊断，不改变固定应用、输入、期限或验收合同。
+[#52](https://github.com/JavaZeroo/termforge/issues/52) 的原固定运行库 GUI stage59 验收仍未完成。本文的有界运行时记录将捕获到的失败定位在 MSYS 控制台事件到 `read(0)` 的转换：TermForge 成功写出完整 93 B，原生输入也包含 Ctrl-O，但 Vim 收到的读结果仅剩其后 92 B。本文记录诊断，不改变固定应用、输入、期限或验收合同；后续[隔离运行库修补实验](vim-msys-runtime-prototype.md)单独记录重建基点 red 与修补四轮 green，不替代原固定目标验收。
## 固定身份与观测范围
@@ -32,7 +32,7 @@
## 源码解释与未完成项
-固定源码的 [`send_winch_maybe`](https://github.com/git-for-windows/msys2-runtime/blob/2e2ef940151485490aff0c7b00c00965ef7a71a4/winsup/cygwin/fhandler/console.cc#L935) 在发送SIGWINCH时临时释放、再取得 `input_mutex`；[`process_input_message`](https://github.com/git-for-windows/msys2-runtime/blob/2e2ef940151485490aff0c7b00c00965ef7a71a4/winsup/cygwin/fhandler/console.cc#L1124) 先Peek并处理旧快照，再按旧数量Read清理。同期 [`cons_master_thread`](https://github.com/git-for-windows/msys2-runtime/blob/2e2ef940151485490aff0c7b00c00965ef7a71a4/winsup/cygwin/fhandler/console.cc#L363) 可以移除resize并写回键盘记录。由此推断旧快照在释放锁期间失效，与实际调用顺序吻合；尚没有单变量修补后的因果红绿，不宣称已完成修复。
+固定源码的 [`send_winch_maybe`](https://github.com/git-for-windows/msys2-runtime/blob/2e2ef940151485490aff0c7b00c00965ef7a71a4/winsup/cygwin/fhandler/console.cc#L935) 在发送SIGWINCH时临时释放、再取得 `input_mutex`；[`process_input_message`](https://github.com/git-for-windows/msys2-runtime/blob/2e2ef940151485490aff0c7b00c00965ef7a71a4/winsup/cygwin/fhandler/console.cc#L1124) 先Peek并处理旧快照，再按旧数量Read清理。同期 [`cons_master_thread`](https://github.com/git-for-windows/msys2-runtime/blob/2e2ef940151485490aff0c7b00c00965ef7a71a4/winsup/cygwin/fhandler/console.cc#L363) 可以移除resize并写回键盘记录。由此推断旧快照在释放锁期间失效，与实际调用顺序吻合；本诊断批次没有修补后的因果红绿，后续独立实验见上文链接，不混用其运行身份。
这个释放锁的代码来自[避免less信号处理longjmp导致死锁的上游修正](https://github.com/git-for-windows/msys2-runtime/commit/76e1edeb27a573a955ebf3ae5a7a7fd1a75b290f)。后续方案必须同时保留这项约束，不能简单删除解锁，也不能补发Ctrl-O、延长等待、换应用或跳过原断言来结项。可继续准备隔离的最小运行库修补与真实输入回归；外部应用或运行库升级的诊断结果不能自动替换原固定验收目标，正式兼容方案另行提出。
diff --git a/docs/research/vim-msys-runtime-prototype.md b/docs/research/vim-msys-runtime-prototype.md
new file mode 100644
index 00000000..5454d59b
--- /dev/null
+++ b/docs/research/vim-msys-runtime-prototype.md
@@ -0,0 +1,50 @@
+# Vim/MSYS resize 输入前缀修补实验
+
+固定公开运行库源码的最小补丁，使隔离环境中的原 GUI Vim 方法连续两批、每批两轮通过；同条件未修补的重建 DLL 首轮复现 stage59。这支持此前捕获的“SIGWINCH 解锁期间旧 Peek 前缀失效”解释。**[#52](https://github.com/JavaZeroo/termforge/issues/52) 的原固定运行库验收仍未完成**：本次没有修改 TermForge 产品、测试或正式兼容策略，也没有把实验 DLL 放入产品包。
+
+## 固定身份与实验边界
+
+TermForge 基点 `ed55a8758423b3273fbd98f07e0bfd77d88e46ac`，产品代码与 `c662011` 相同；候选 `0.26.1-dev+termforge.5`、官方 ConPTY `1.25.260930003`、flags24。所有 GUI 样本使用同一个无插桩 EXE，SHA-256 `7f26395942f107297565f50402568650e1e17c5eb23924bee1bfb02c50c60d16`。本机 Windows 11 x64，批次完成后查询系统版本为 `10.0.26200`；没有发布主机名。
+
+固定 Vim 9.1 patches 1–532，EXE SHA-256 `2e0fda63a89171adfc46c9417d5105cc39ed778cc69a890b83a4eabc34e7646a`。Vim 与四个相邻 DLL 从既有安装按哈希复制到隔离目录；各变体使用同一个活动路径，只有 `msys-2.0.dll` 切换，其他四个文件保持原字节。没有复制 Vim runtime 配置目录。每次切换前检查上一方法的自有 Job 已清空、私有桌面已释放；批次后复核既有安装的五个文件未变。
+
+| 运行库变体 | SHA-256 | 实际结果 |
+|---|---|---|
+| 隔离原 DLL | `3096d2ba9be20e90be1399edd391bac65d84bc387f5a419b502c9b326081930f` | 一次原两轮方法：先通过、后 stage59 |
+| 固定源码未修补重建 | `d9e490fdbe31c233eab6578168fb4f2bda84f53252be3898d0cdd0e8610db721` | 首轮 stage59，立即停止 |
+| 同条件修补重建 | `dd792766fa976b031cbff0540744b6f3d2b3fc0d695ed764a01457b65eab6258` | 两次原两轮方法：四轮通过，达到预定上限后停止 |
+
+本批未附加 Frida，也未采集实际加载模块路径或新的输入 API 轨迹。文件身份和隔离路径是本批证据；此前的调用边界证据仍属于独立的[输入边界诊断](vim-msys-input-boundary.md)，不能混写成这批运行的调用记录。
+
+## 原方法、停止条件与结果
+
+直接调用现有 `CandidateTuiTests.test_real_fullscreen_editor_and_cursor_reply`，每次方法原有两轮，保留原输入、Vim 脚本、事件文件、精确断言及 25 秒内层 / 40 秒每轮外层期限。先限定原 DLL 一次方法；未修重建 DLL 最多两次方法，首次 stage59 或其他失败立即停止；只有重建基点出现原 stage59 才执行修补变体，最多两次方法，任何失败即停。实际共四次方法、七个 GUI 样本，没有额外 GUI 重试。
+
+两个失败均为原 stage59，外层未超时，命令进入插入内容；`candidate-insert-log.txt` 均为相同的 221 B，resize 文件为空。两个失败的 `candidate-input.bin` 也为空、未完成刷新，**不能将其视为完整输入轨迹或“未收到输入”的证据**。原测试输入未改由源码身份保证，实际 API 字节链路只由前一诊断批次证明。
+
+四轮修补结果通过原就绪、进入/离开插入模式、编辑、60×12 resize 文件、写盘、退出、主屏恢复、独立 child 尺寸及 CPR 回复检查；`presented_done` 仍为 `null`。原 DLL 的首轮也通过，但不覆盖其后失败。七轮均无外层超时，Job active/terminated 为 0，desktop gone。导出时仅离线重放原断言及验证器，复核保存的结果和文件哈希，没有重跑 GUI。
+
+## 修改机制与尚未覆盖的路径
+
+此前记录显示：`process_input_message` Peek 到 resize 后调用 `send_winch_maybe`，后者为信号递送临时释放 `input_mutex`；另一线程可以消耗 resize。旧调用恢复后按旧数量清理队列，取走新到的 Ctrl-O。这是已捕获失败的调用顺序，不能追溯填补没有原生输入记录的历史失败。
+
+[研究补丁](../../research/msys-runtime-window-prefix/README.md)仅修改 `winsup/cygwin/fhandler/console.cc` 的 `WINDOW_BUFFER_SIZE_EVENT` 分支，12 行新增、6 行删除：在输入锁仍保护旧 Peek 前缀时，先 `ReadConsoleInputW` 消费已处理前缀并调整 `num_processed`；再保留原 `send_winch_maybe` 解锁、SIGWINCH 与再加锁，返回现有 read 循环，下一次重新 Peek。即使尺寸未实际变化也结束当前快照处理，后续输入进入新一轮。
+
+没有删除为 less 信号处理器 longjmp 保留的解锁。结构保留不等于已做实际 longjmp 回归；`MOUSE_EVENT` 中的同类信号路径、读取失败注入、其他应用和正式兼容/分发策略尚未验证。补丁沿用既有 `ReadConsoleInputW` 错误处理，未声称修复这些边界。
+
+## 构建条件与来源
+
+- 运行库：[固定 MSYS 源码](https://github.com/git-for-windows/msys2-runtime/tree/2e2ef940151485490aff0c7b00c00965ef7a71a4)，提交 `2e2ef940151485490aff0c7b00c00965ef7a71a4`。未修补基点 tracked 源码干净；修补变体仅上述文件有 diff，公开补丁已做 `git apply --check` 并比对应用后的源码哈希。
+- 独立 Git SDK：提交 `36b102843d99c4993084b29d839dc6f5ef4db2f9`，构建依赖只装入私有 SDK。完整[包版本清单](../../research/msys-runtime-window-prefix/build-packages.txt)随研究记录保存；其中 GCC/G++ 16.2.0，GNU C/C++17，binutils 2.47、make 4.4.1。
+- Win32 头文件：SDK 提交 `eb069c08fe8ef4d2f19dc6b99c4816a4c51fd2ae`（2024-07-10）的 `usr/include/w32api`，包版本 `12.0.0.r0.g819a6ec2e-1`；同时固定裸包含与 `w32api/` 前缀包含路径。不能仅设置顶层 `CPPFLAGS` 后假定子目录采用了旧头文件。
+- 配置保留 `--disable-dependency-tracking --disable-doc --disable-dumper --with-msys2-runtime-commit=2e2ef940151485490aff0c7b00c00965ef7a71a4`，生成构建文件后在目标 `winsup/cygwin` 目录构建 `all`。C 使用 `gcc -std=gnu17 -Wno-error=old-style-definition`；C++ 使用 `g++ -std=gnu++17` 和 `-O2 -g -Wno-error -Wno-narrowing -Wno-use-after-free`。最终 make 显式传入两个旧头文件的 `-isystem` 路径，`-j2`，每次构建上限 900 秒。构建准备失败和编译警告原件保留在本地，不计 GUI 结果。
+
+这是新工具链重建实验，不是官方 2024 DLL 的逐字节复建。两个重建变体的 310 项构建对象清单具有相同键集合，六项哈希不同：`fhandler/console.o`、`libdll.a`、`msysdll.a`、`new-msys-2.0.dll`、`version.o`、`winver.o`，包含再生成的版本对象。只能声称一处主动源码修改，不能声称二进制只有一个函数或一个文件不同。
+
+公开源码补丁遵循固定上游的 LGPLv3-or-later 与 `CYGWIN_LICENSE` 中的 Linking Exception；完整许可及修改归属见[来源说明](../../research/msys-runtime-window-prefix/README.md)，不套用项目 MIT。它是 MSYS/Cygwin 研究材料，不属于 WindTerm 公开或逆向源码。
+
+## 证据与结论限制
+
+[白名单验证记录](../../experiments/shell/results/2026-10-27-vim-msys-runtime-prototype/validation.json)包含源码、EXE/DLL、补丁/许可、对象差异、全部七轮结果、原文件哈希与回收状态；DLL、原始终端输出、个人路径及完整工具日志仅本地保存。
+
+本实验为原诊断补充了重建基点 red 与修补变体四轮 green，但没有重新执行完整 57 项 CTest，没有获得 WindTerm 同应用对照，也没有形成性能或普遍可靠性结论。原固定运行库下的完整官方 56/57 结果保持不变；#52、#47 和 Draft PR #50 的正式出口继续开放，不能用替换外部应用 DLL 自动关闭原合同。
diff --git a/experiments/shell/results/2026-10-27-vim-msys-runtime-prototype/validation.json b/experiments/shell/results/2026-10-27-vim-msys-runtime-prototype/validation.json
new file mode 100644
index 00000000..697e6029
--- /dev/null
+++ b/experiments/shell/results/2026-10-27-vim-msys-runtime-prototype/validation.json
@@ -0,0 +1,655 @@
+{
+ "schema_version": 1,
+ "purpose": "isolated source-rebuilt MSYS runtime prototype for issue 52",
+ "status": "rebuilt baseline reproduced stage59; patched runtime passed four original GUI cases; original fixed-runtime acceptance remains open",
+ "termforge": {
+ "source_commit": "ed55a8758423b3273fbd98f07e0bfd77d88e46ac",
+ "product_code_same_as": "c662011",
+ "product_and_test_changes": false,
+ "binary_sha256": "7f26395942f107297565f50402568650e1e17c5eb23924bee1bfb02c50c60d16",
+ "candidate": "0.26.1-dev+termforge.5",
+ "backend": "reviewed-side-by-side-1.25.260930003",
+ "conpty_flags": 24,
+ "source_files_sha256": {
+ "experiments/shell/shell.cpp": "b4f6fe98812d1d23fa5f5bbcc7376437404af6cdb67cd6cdcdf448b57cb31fe9",
+ "experiments/shell/test_candidate_tui.py": "a300380b97ad424c5af06219a021a256de6178c3af7fb7e933e24bb8142201ee",
+ "experiments/shell/run.py": "45976b828eecb316881d698dedaef09ad304f72d991dfa360f1c552bbcbe9f1d"
+ }
+ },
+ "environment": {
+ "os_version_observed_after_batch": [
+ "11",
+ "10.0.26200",
+ "SP0",
+ "Multiprocessor Free"
+ ],
+ "architecture": "x64",
+ "personal_installation_unchanged_hash_check": true,
+ "fixture_files_original_sha256": {
+ "vim.exe": "2e0fda63a89171adfc46c9417d5105cc39ed778cc69a890b83a4eabc34e7646a",
+ "msys-ncursesw6.dll": "73ff8bc8b1f515e57b185e57d25d9ad29067057ff0819a8e588677c65ca61629",
+ "msys-2.0.dll": "3096d2ba9be20e90be1399edd391bac65d84bc387f5a419b502c9b326081930f",
+ "msys-intl-8.dll": "23d30f4bcbc0a258cf5ecfe29e707f9b05d51c32d5b16a910f1012b889136c12",
+ "msys-iconv-2.dll": "9cbf5613b946be7bad403ac0d7277efbd514a35faa644c6a0d6e7f6cc0b40780"
+ },
+ "same_active_fixture_path_across_variants": true,
+ "fixture_runtime_files_not_copied": true,
+ "loaded_module_paths_observed": false,
+ "diagnostic_instrumentation": false
+ },
+ "runtime": {
+ "source_commit": "2e2ef940151485490aff0c7b00c00965ef7a71a4",
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+ "active_children_after": 0,
+ "cleanup_complete": true,
+ "input_rejected": 0,
+ "columns": 60,
+ "rows": 12,
+ "presented_done": null
+ },
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+ },
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+ "bytes": 5,
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+ "bytes": 6,
+ "sha256": "3dfa3fb239f56c778a1e9b33eb31328349edd155a95806dac4378904e88527e5"
+ },
+ "candidate-vim.vim": {
+ "bytes": 334,
+ "sha256": "386d475e5297169cf7fcc425dcc0f6b0174c237ff86be03564b2d505c5d79797"
+ },
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+ "bytes": 17,
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+ "bytes": 7,
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+ "empty_input_file_is_not_a_complete_input_trace": false
+ }
+ ],
+ "private_artifact_hashes": {
+ "identity.json": "bfda2110a737353912cafed36e6b3c401e1eca36b840e39fcc9ad3dfb2db7e36",
+ "outcome.json": "a23be95c07a043b02f3a869d0ca403b0cf17f2168652e3783258978c07490c97",
+ "unittest.log": "143f43a9096edec23651fa9c4f968d76e7ad6509ce7d9976da9e84b9cfd6bc49"
+ }
+ }
+ ],
+ "limitations": [
+ "The toolchain differs from the distributed 2024 DLL; this is an independent source rebuild, not a byte-identical rebuild.",
+ "The sole intentional source change is the WINDOW_BUFFER_SIZE_EVENT branch; six build artifacts differ, including regenerated version metadata.",
+ "No API probe or loaded-module path observation was performed in this batch; input-boundary call evidence belongs to the earlier separate diagnostic.",
+ "Failed Vim input files are empty and unflushed; they do not prove absent input or a complete equal input trace.",
+ "Only the original Vim GUI method was run; MOUSE_EVENT, actual signal-handler longjmp, other applications and full CTest were not validated.",
+ "Signal delivery still unlocks/relocks structurally; that is not a longjmp regression test.",
+ "The existing ReadConsoleInputW error handling was not strengthened or fault-injected.",
+ "Four patched cases support the queue-prefix diagnosis; they do not establish universal reliability, performance equivalence or WindTerm parity.",
+ "No product runtime adoption, compatibility strategy or fixed-target acceptance change is made; issue 52 remains open."
+ ]
+}
diff --git a/research/msys-runtime-window-prefix/COPYING b/research/msys-runtime-window-prefix/COPYING
new file mode 100644
index 00000000..94a9ed02
--- /dev/null
+++ b/research/msys-runtime-window-prefix/COPYING
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
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diff --git a/research/msys-runtime-window-prefix/COPYING.LIB b/research/msys-runtime-window-prefix/COPYING.LIB
new file mode 100644
index 00000000..65c5ca88
--- /dev/null
+++ b/research/msys-runtime-window-prefix/COPYING.LIB
@@ -0,0 +1,165 @@
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+ This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+ 0. Additional Definitions.
+
+ As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+ "The Library" refers to a covered work governed by this License,
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+
+ An "Application" is any work that makes use of an interface provided
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+ A "Combined Work" is a work produced by combining or linking an
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diff --git a/research/msys-runtime-window-prefix/CYGWIN_LICENSE b/research/msys-runtime-window-prefix/CYGWIN_LICENSE
new file mode 100644
index 00000000..dba58e8d
--- /dev/null
+++ b/research/msys-runtime-window-prefix/CYGWIN_LICENSE
@@ -0,0 +1,30 @@
+THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESSED OR
+IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+
+Unless stated otherwise, the sources under the cygwin subdirectory,
+as well as the sources under the cygserver subdirectory linked into
+the Cygwin DLL, are licensed under the Lesser Gnu Public License,
+version 3 or (at your option) any later version (LGPLv3+). See the
+COPYING.LIB file for the exact wording of that license.
+
+Unless stated otherwise, the sources under the cygserver subdir not
+linked into the Cygwin DLL, as well as the sources under the lsaauth
+and the utils subdirectories are licensed under the Gnu Public License,
+version 3 or (at your option) any later version (GPLv3+). See the
+COPYING file for the exact wording of that license.
+
+Parts of the sources in any subdirectory are licensed using a BSD-like
+license. The affected source files contain explicit copyright notices
+to that effect.
+
+Linking Exception:
+
+ As a special exception, the copyright holders of the Cygwin library
+ grant you additional permission to link libcygwin.a, crt0.o, and
+ gcrt0.o with independent modules to produce an executable, and to
+ convey the resulting executable under terms of your choice, without
+ any need to comply with the conditions of LGPLv3 section 4. An
+ independent module is a module which is not itself based on the
+ Cygwin library.
+
diff --git a/research/msys-runtime-window-prefix/README.md b/research/msys-runtime-window-prefix/README.md
new file mode 100644
index 00000000..01c8be97
--- /dev/null
+++ b/research/msys-runtime-window-prefix/README.md
@@ -0,0 +1,16 @@
+# MSYS resize 输入前缀研究补丁
+
+本目录保存 [#52](https://github.com/JavaZeroo/termforge/issues/52) 的外部运行库实验，结果与限制见[实验记录](../../docs/research/vim-msys-runtime-prototype.md)。这是公开 MSYS/Cygwin 源码的研究补丁，不是 WindTerm 源码；不进入 TermForge 的默认构建或发布包，也不表示选定新的产品依赖或兼容策略。
+
+## 来源与许可
+
+- 上游：[git-for-windows/msys2-runtime](https://github.com/git-for-windows/msys2-runtime/tree/2e2ef940151485490aff0c7b00c00965ef7a71a4)，固定提交 `2e2ef940151485490aff0c7b00c00965ef7a71a4`。
+- 原文件：[winsup/cygwin/fhandler/console.cc](https://github.com/git-for-windows/msys2-runtime/blob/2e2ef940151485490aff0c7b00c00965ef7a71a4/winsup/cygwin/fhandler/console.cc)，属于 Cygwin，文件头要求遵循 `CYGWIN_LICENSE`。
+- 本补丁的上下文和修改遵循该文件的上游许可，**不由 TermForge 根目录的 MIT 许可证覆盖**。固定版本的 [CYGWIN_LICENSE](CYGWIN_LICENSE) 将该子目录默认许可列为 LGPLv3 或更新版本，并保留其中的 Linking Exception；完整文本 [COPYING.LIB](COPYING.LIB) 和 [COPYING](COPYING) 随附，三份许可文件均原样来自同一上游提交的 `winsup/`。
+- 修改方：TermForge contributors；日期：2026-10-27。仅调整 `WINDOW_BUFFER_SIZE_EVENT` 分支的事件消费位置；保留 `send_winch_maybe` 的解锁、SIGWINCH 与再加锁。鼠标分支、信号处理器 longjmp 的实际回归及正式兼容方案均未由本补丁验收。
+
+## 核对补丁
+
+在上述固定上游 checkout 中运行 `git apply --check /path/to/window-prefix.patch`，然后应用补丁。原源与补丁源分别构建，不能拿新的二进制直接覆盖原验收目标并宣称通过。补丁 SHA-256 为 `e942c2d08b7cc5a294203bf0a52f7414b9b19f3cd675624644feadf907418c77`。
+
+本轮使用独立 SDK 和原 Vim 的隔离副本，TermForge 自身的产品代码、测试方法、输入、断言与期限未改；构建条件、实际样本及不能外推的边界见实验记录。DLL、原始终端输出、工作目录与工具日志仅保存在本地，没有随本目录发布。
diff --git a/research/msys-runtime-window-prefix/build-packages.txt b/research/msys-runtime-window-prefix/build-packages.txt
new file mode 100644
index 00000000..9e594974
--- /dev/null
+++ b/research/msys-runtime-window-prefix/build-packages.txt
@@ -0,0 +1,336 @@
+apr 1.7.6-2
+apr-util 1.6.5-1
+asciidoc 10.2.1-2
+autoconf-wrapper 20260320-3
+autoconf2.13 2.13-6
+autoconf2.69 2.69-4
+autoconf2.71 2.71-4
+autoconf2.72 2.72-4
+autoconf2.73 2.73-1
+autogen 5.18.16-6
+automake-wrapper 20260320-3
+automake1.11 1.11.6-6
+automake1.12 1.12.6-6
+automake1.13 1.13.4-7
+automake1.14 1.14.1-6
+automake1.15 1.15.1-4
+automake1.16 1.16.5-1
+automake1.17 1.17-2
+automake1.18 1.18.1-2
+automake1.19 1.19-1
+autotools 2026.08.04-1
+bash 5.3.015-2
+bash-completion 2.18.0-1
+binutils 2.47-1
+bison 3.8.2-5
+bsdcpio 3.8.10-2
+bsdtar 3.8.10-2
+bzip2 1.0.8-4
+ca-certificates 20260816-2
+cocom 0.996-6
+coreutils 8.32-5
+curl 8.23.0-1
+dash 0.5.13.5-1
+db 6.2.32-6
+diffstat 1.69-1
+diffutils 3.12-1
+docbook-xml 4.5-6
+docbook-xsl 1.79.2-3
+docbook-xsl-ns 1.79.2-2
+docx2txt 1.4-2
+dos2unix 7.5.7-1
+expat 2.9.0-1
+file 5.48-1
+filesystem 2026.10.17-1
+findutils 4.11.0-2
+flex 2.6.4-4
+gawk 5.4.1-1
+gcc 16.2.0-1
+gcc-libs 16.2.0-1
+gdb 18.1-2
+gdbm 1.26-1
+gettext 0.22.5-1
+gettext-devel 0.22.5-1
+git 2.56.0-1
+git-for-windows-keyring 1.1.4.a0be1ed4-1
+gmp 6.3.0-2
+gnupg 2.4.9-3
+gnutls 3.8.13-2
+grep 1~3.0-7
+groff 1.24.2-1
+gzip 1.15-1
+heimdal 7.8.0-5
+heimdal-libs 7.8.0-5
+help2man 1.49.3-2
+iconv 1.19-1
+info 7.2-3
+isl 0.28-1
+less 710-1
+libarchive 3.8.10-2
+libasprintf 0.22.5-1
+libassuan 3.0.2-1
+libbz2 1.0.8-4
+libcbor 0.11.0-1
+libcurl 8.23.0-1
+libdb 6.2.32-6
+libedit 20240808_3.1-1
+libexpat 2.9.0-1
+libffi 3.8.0-1
+libfido2 1.15.0-1
+libgc 8.2.12-1
+libgcrypt 1.12.4-1
+libgdbm 1.26-1
+libgettextpo 0.22.5-1
+libgnutls 3.8.13-2
+libgpg-error 1.61-1
+libguile 3.0.11-1
+libhogweed 4.0-1
+libiconv 1.19-1
+libiconv-devel 1.19-1
+libidn2 2.3.8-1
+libintl 0.22.5-1
+libksba 1.8.1-1
+libltdl 2.6.2-2
+liblz4 1.10.0-1
+liblzma 5.8.4-1
+libnettle 4.0-1
+libnghttp2 1.70.0-1
+libnpth 1.8-1
+libopenssl 3.5.9-1
+libp11-kit 0.26.5-1
+libpcre 8.45-5
+libpcre16 8.45-5
+libpcre2_16 10.49-1
+libpcre2_32 10.49-1
+libpcre2_8 10.49-1
+libpcre2posix 10.49-1
+libpcre32 8.45-5
+libpcrecpp 8.45-5
+libpcreposix 8.45-5
+libpipeline 1.5.8-1
+libpsl 0.23.2-1
+libreadline 8.3.006-1
+libsasl 2.1.28-5
+libserf 1.3.10-2
+libsqlite 3.54.0-1
+libssh2 1.11.1-1
+libtasn1 4.21.0-1
+libtool 2.6.2-2
+libunistring 1.4.2-1
+libunrar 7.3.1-1
+libutil-linux 2.40.2-2
+libxcrypt 4.5.2-1
+libxml2 2.15.4-1
+libxslt 1.1.45-1
+libxxhash 0.8.4-1
+libzstd 1.5.7-1
+lndir 1.0.6-1
+m4 1.4.21-1
+make 4.4.1-3
+man-db 2.13.1-2
+markdown 1.0.1-2
+mingw-w64-cross-common-binutils 2.47-1
+mingw-w64-cross-crt 14.0.0.r501.gb13721ccf-1
+mingw-w64-cross-gcc 16.2.0-3
+mingw-w64-cross-mingw32-binutils 2.47-1
+mingw-w64-cross-mingw32-crt 14.0.0.r501.gb13721ccf-1
+mingw-w64-cross-mingw32-gcc 16.2.0-3
+mingw-w64-cross-mingw32-headers 14.0.0.r501.gb13721ccf-1
+mingw-w64-cross-mingw32-windows-default-manifest 6.4-5
+mingw-w64-cross-mingw32-winpthreads 14.0.0.r501.gb13721ccf-1
+mingw-w64-cross-mingw32-zlib 1.3.2-2
+mingw-w64-cross-mingw64-binutils 2.47-1
+mingw-w64-cross-mingw64-crt 14.0.0.r501.gb13721ccf-1
+mingw-w64-cross-mingw64-gcc 16.2.0-3
+mingw-w64-cross-mingw64-headers 14.0.0.r501.gb13721ccf-1
+mingw-w64-cross-mingw64-windows-default-manifest 6.4-5
+mingw-w64-cross-mingw64-winpthreads 14.0.0.r501.gb13721ccf-1
+mingw-w64-cross-mingw64-zlib 1.3.2-2
+mingw-w64-cross-mingwarm64-zlib 1.3.2-2
+mingw-w64-cross-ucrt64-binutils 2.47-1
+mingw-w64-cross-ucrt64-crt 14.0.0.r501.gb13721ccf-1
+mingw-w64-cross-ucrt64-gcc 16.2.0-3
+mingw-w64-cross-ucrt64-headers 14.0.0.r501.gb13721ccf-1
+mingw-w64-cross-ucrt64-windows-default-manifest 6.4-5
+mingw-w64-cross-ucrt64-winpthreads 14.0.0.r501.gb13721ccf-1
+mingw-w64-cross-ucrt64-zlib 1.3.2-2
+mingw-w64-cross-zlib 1.3.2-2
+mingw-w64-ucrt-x86_64-7zip 26.05-1
+mingw-w64-ucrt-x86_64-antiword 0.37-3
+mingw-w64-ucrt-x86_64-asciidoctor 2.0.26-2
+mingw-w64-ucrt-x86_64-binutils 2.47-4
+mingw-w64-ucrt-x86_64-brotli 1.2.1-1
+mingw-w64-ucrt-x86_64-bzip2 1.0.8-4
+mingw-w64-ucrt-x86_64-c-ares 1.34.9-1
+mingw-w64-ucrt-x86_64-ca-certificates 20260816-3
+mingw-w64-ucrt-x86_64-cc-libs 16.2.0-6
+mingw-w64-ucrt-x86_64-connect 1.105-5
+mingw-w64-ucrt-x86_64-crt 14.0.0.r536.g7ce22f663-1
+mingw-w64-ucrt-x86_64-curl-openssl-alternate 8.23.0-1
+mingw-w64-ucrt-x86_64-curl-winssl 8.23.0-1
+mingw-w64-ucrt-x86_64-cv2pdb 0.53-1
+mingw-w64-ucrt-x86_64-docx2txt-rs 0.2.0-1
+mingw-w64-ucrt-x86_64-expat 2.9.0-1
+mingw-w64-ucrt-x86_64-gcc 16.2.0-6
+mingw-w64-ucrt-x86_64-gcc-libs 16.2.0-6
+mingw-w64-ucrt-x86_64-gdb 18.1-3
+mingw-w64-ucrt-x86_64-gdbm 1.26-1
+mingw-w64-ucrt-x86_64-gettext-libtextstyle 1.0-1
+mingw-w64-ucrt-x86_64-gettext-runtime 1.0-1
+mingw-w64-ucrt-x86_64-gettext-tools 1.0-1
+mingw-w64-ucrt-x86_64-git 2.56.0.4-1
+mingw-w64-ucrt-x86_64-git-credential-manager 2.9.1-1
+mingw-w64-ucrt-x86_64-git-credential-wincred 2.56.0.4-1
+mingw-w64-ucrt-x86_64-git-doc-html 2.56.0.4-1
+mingw-w64-ucrt-x86_64-git-extra 1.1.715.85f886165-1
+mingw-w64-ucrt-x86_64-git-for-windows-addons 2.56.0.4-1
+mingw-w64-ucrt-x86_64-git-gui 2.56.0.4-1
+mingw-w64-ucrt-x86_64-git-lfs 3.8.1-1
+mingw-w64-ucrt-x86_64-git-perl 2.56.0.4-1
+mingw-w64-ucrt-x86_64-git-send-email 2.56.0.4-1
+mingw-w64-ucrt-x86_64-git-subtree 2.56.0.4-1
+mingw-w64-ucrt-x86_64-git-svn 2.56.0.4-1
+mingw-w64-ucrt-x86_64-gitk 2.56.0.4-1
+mingw-w64-ucrt-x86_64-gmp 6.3.0-2
+mingw-w64-ucrt-x86_64-gnutls 3.8.13-3
+mingw-w64-ucrt-x86_64-headers 14.0.0.r536.g7ce22f663-1
+mingw-w64-ucrt-x86_64-isl 0.28-1
+mingw-w64-ucrt-x86_64-libatomic 16.2.0-6
+mingw-w64-ucrt-x86_64-libb2 0.98.1-3
+mingw-w64-ucrt-x86_64-libffi 3.8.0-1
+mingw-w64-ucrt-x86_64-libgcc 16.2.0-6
+mingw-w64-ucrt-x86_64-libgomp 16.2.0-6
+mingw-w64-ucrt-x86_64-libiconv 1.19-1
+mingw-w64-ucrt-x86_64-libidn2 2.3.8-4
+mingw-w64-ucrt-x86_64-libmangle 14.0.0.r536.g7ce22f663-1
+mingw-w64-ucrt-x86_64-libpsl 0.21.5-3
+mingw-w64-ucrt-x86_64-libquadmath 16.2.0-6
+mingw-w64-ucrt-x86_64-libssh2-wincng 1.11.1-2
+mingw-w64-ucrt-x86_64-libstdc++ 16.2.0-6
+mingw-w64-ucrt-x86_64-libsystre 1.0.2-3
+mingw-w64-ucrt-x86_64-libtasn1 4.21.0-1
+mingw-w64-ucrt-x86_64-libtre 0.9.0-2
+mingw-w64-ucrt-x86_64-libunistring 1.4.2-1
+mingw-w64-ucrt-x86_64-libwinpthread 14.0.0.r536.g7ce22f663-1
+mingw-w64-ucrt-x86_64-libyaml 0.2.5-2
+mingw-w64-ucrt-x86_64-libzip 1.12.1-1
+mingw-w64-ucrt-x86_64-mpc 1.4.1-1
+mingw-w64-ucrt-x86_64-mpdecimal 4.0.1-3
+mingw-w64-ucrt-x86_64-mpfr 4.2.2-3
+mingw-w64-ucrt-x86_64-ncurses 6.6-4
+mingw-w64-ucrt-x86_64-nettle 4.0-1
+mingw-w64-ucrt-x86_64-nghttp2 1.70.0-1
+mingw-w64-ucrt-x86_64-odt2txt 0.5-4
+mingw-w64-ucrt-x86_64-openssl 3.5.9-1
+mingw-w64-ucrt-x86_64-osslsigncode 2.14-1
+mingw-w64-ucrt-x86_64-p11-kit 0.26.5-1
+mingw-w64-ucrt-x86_64-pcre 8.45-2
+mingw-w64-ucrt-x86_64-pcre2 10.49-1
+mingw-w64-ucrt-x86_64-pkgconf 1~3.0.10-1
+mingw-w64-ucrt-x86_64-python 3.14.9-1
+mingw-w64-ucrt-x86_64-readline 8.3.003-1
+mingw-w64-ucrt-x86_64-ruby 4.0.9-1
+mingw-w64-ucrt-x86_64-sqlite3 3.54.0-1
+mingw-w64-ucrt-x86_64-tcl 8.6.18-1
+mingw-w64-ucrt-x86_64-termcap 1.3.1-8
+mingw-w64-ucrt-x86_64-tk 8.6.18-1
+mingw-w64-ucrt-x86_64-tools 14.0.0.r536.g7ce22f663-1
+mingw-w64-ucrt-x86_64-tzdata 2026e-1
+mingw-w64-ucrt-x86_64-windows-default-manifest 20260815-1
+mingw-w64-ucrt-x86_64-wineditline 2.208-1
+mingw-w64-ucrt-x86_64-winpthreads 14.0.0.r536.g7ce22f663-1
+mingw-w64-ucrt-x86_64-wintoast 1.0.0.275.a44fa02-1
+mingw-w64-ucrt-x86_64-xpdf-tools 4.06-1
+mingw-w64-ucrt-x86_64-xxhash 0.8.4-1
+mingw-w64-ucrt-x86_64-xz 5.8.4-1
+mingw-w64-ucrt-x86_64-zlib 1.3.2-3
+mingw-w64-ucrt-x86_64-zstd 1.5.7-2
+mintty 1~3.8.3-1
+mpc 1.4.1-1
+mpdecimal 4.0.1-1
+mpfr 4.2.2-1
+msys2-keyring 1~20260814-1
+msys2-launcher 1.5-3
+msys2-runtime 3.6.10-4
+msys2-runtime-devel 3.6.10-4
+msys2-w32api-headers 14.0.0.r0.g9b3dd0125-1
+msys2-w32api-runtime 14.0.0.r0.g9b3dd0125-1
+nano 9.2-1
+ncurses 6.6-2
+nettle 4.0-1
+openssh 10.6p1-1
+openssl 3.5.9-1
+p11-kit 0.26.5-1
+pacman 6.1.0-26
+pacman-contrib 1.10.6-2
+pacman-mirrors 20260129-1
+patch 2.8.1-1
+patchutils 0.4.3-1
+pcre 8.45-5
+pcre2 10.49-1
+perl 5.42.3-3
+perl-authen-sasl 2.2100-2
+perl-class-inspector 1.36-2
+perl-clone 0.51-1
+perl-convert-binhex 1.125-3
+perl-encode-locale 1.05-3
+perl-error 0.17030-3
+perl-file-listing 6.16-2
+perl-file-sharedir 1.118-2
+perl-html-parser 3.86-2
+perl-html-tagset 3.24-2
+perl-http-cookiejar 0.014-2
+perl-http-cookies 6.12-2
+perl-http-daemon 6.17-2
+perl-http-date 6.08-2
+perl-http-message 7.04-2
+perl-http-negotiate 6.01-4
+perl-inc-latest 0.500-3
+perl-io-html 1.004-3
+perl-io-socket-ssl 2.099-2
+perl-io-stringy 2.113-4
+perl-json 4.11-2
+perl-libwww 6.83-3
+perl-locale-gettext 1.07-14
+perl-lwp-mediatypes 6.05-2
+perl-mailtools 2.22-2
+perl-mime-tools 5.518-2
+perl-module-build 0.4234-3
+perl-net-http 6.24-2
+perl-net-smtp-ssl 1.04-3
+perl-net-ssleay 1.96-2
+perl-termreadkey 2.38-9
+perl-test-pod 1.52-3
+perl-timedate 2.35-2
+perl-try-tiny 0.32-2
+perl-uri 5.40-1
+perl-www-robotrules 6.03-2
+perl-xml-parser 2.59-2
+perl-yaml-syck 1.47-3
+pinentry 1.3.3-1
+pkgconf 1.7.4-1
+pkgfile 26-1
+popt 1.19-1
+python 3.12.15-1
+rebase 4.5.0-5
+rsync 3.5.1-2
+sed 4.9-1
+ssh-pageant 1.4.r15.gc804ba4-1
+subversion 1.14.5-3
+swig 4.5.1-1
+tar 1.35-3
+tig 2.6.1-1
+time 1.10-1
+tzcode 2026e-1
+unzip 6.0-3
+util-linux 2.40.2-2
+vim 9.2.1178-1
+which 2.25-1
+windows-default-manifest 20260815-1
+winpty 0.4.3-3
+xmlto 0.0.29-2
+xxhash 0.8.4-1
+xz 5.8.4-1
+zlib 1.3.2-1
+zlib-devel 1.3.2-1
+zstd 1.5.7-1
diff --git a/research/msys-runtime-window-prefix/window-prefix.patch b/research/msys-runtime-window-prefix/window-prefix.patch
new file mode 100644
index 00000000..92f2b91b
--- /dev/null
+++ b/research/msys-runtime-window-prefix/window-prefix.patch
@@ -0,0 +1,27 @@
+--- a/winsup/cygwin/fhandler/console.cc
++++ b/winsup/cygwin/fhandler/console.cc
+@@ -1486,12 +1486,18 @@
+ break;
+
+ case WINDOW_BUFFER_SIZE_EVENT:
+- if (send_winch_maybe ())
+- {
+- stat = input_winch;
+- goto out;
+- }
+- /* fall through */
++ {
++ /* Retire the peeked prefix while input_mutex still protects it.
++ send_winch_maybe releases that mutex for signal delivery, so
++ neither the queue prefix nor the remaining peek is valid after
++ it returns. A non-resizing event starts a fresh input pass. */
++ DWORD discarded = 0;
++ acquire_attach_mutex (mutex_timeout);
++ ReadConsoleInputW (get_handle (), input_rec, i + 1, &discarded);
++ release_attach_mutex ();
++ con.num_processed -= min (con.num_processed, discarded);
++ return send_winch_maybe () ? input_winch : stat;
++ }
+ default:
+ continue;
+ }