build: prepare Studio .12 Windows preview

FORK-CHANGELOG.md

@@ -17,7 +17,9 @@ see [FORK.md](FORK.md).
 For the dated review of newer upstream changes, see
 [FORK-UPSTREAM-REVIEW.md](FORK-UPSTREAM-REVIEW.md).
 
-## Unreleased — AI conversation persistence
+## 1.10.0-subscription.12 — Windows x64 candidate (not published)
+
+### AI conversation persistence
 
 - Saves each project's AI conversations, messages, generated-image references,
   manual compaction state and rewind checkpoints under the local Studio profile.
@@ -28,7 +30,7 @@ For the dated review of newer upstream changes, see
 - Older builds stored conversations only in memory, so chats already lost on
   restart before this change cannot be recovered.
 
-## Unreleased — ChatGPT subscription image scenes
+### ChatGPT subscription image scenes
 
 - Adds an explicit image-scene action to the AI session whenever ChatGPT
   subscription (Codex) is connected, even if conversation turns use Claude or

README.md

@@ -1,4 +1,4 @@
-> **PurplePrint Studio is an independent, unofficial fork of [OpenScreen](https://github.com/getopenscreen/openscreen).** This working rebrand is not an upstream release or endorsement. Published `1.10.0-subscription.*` installers still use the former OpenScreen Subscription name until a Studio build passes release validation. See [FORK.md](FORK.md) for provenance and [FORK-CHANGELOG.md](FORK-CHANGELOG.md) for changes. Use [this fork's releases](https://github.com/PurplePrintAI/openscreen-subscription/releases), not the upstream installers described later on this page.
+> **PurplePrint Studio is an independent, unofficial fork of [OpenScreen](https://github.com/getopenscreen/openscreen).** This rebrand is not an upstream release or endorsement. The published Windows `.11` installer uses the PurplePrint Studio name; earlier Mac validation builds retain the former OpenScreen Subscription name. See [FORK.md](FORK.md) for provenance and [FORK-CHANGELOG.md](FORK-CHANGELOG.md) for changes. Use [this fork's releases](https://github.com/PurplePrintAI/openscreen-subscription/releases), not the upstream installers described later on this page.
 
 <p align="center">
   <img src="public/purpleprint-studio.png" alt="PurplePrint Studio mark" width="64" />
@@ -12,7 +12,7 @@ PurplePrint Studio remains free to use. It records and edits locally; optional A
 
 ## OpenScreen upstream documentation — reference only
 
-The feature overview and installation sections below describe the upstream OpenScreen project. Its Store listings, signing claims and release links **do not apply to this fork**. [FORK.md](FORK.md) describes fork release boundaries; [MACOS-INSTALLATION.md](MACOS-INSTALLATION.md) currently documents the published packages under their former name. Studio packages still need validation.
+The feature overview and installation sections below describe the upstream OpenScreen project. Its Store listings, signing claims and release links **do not apply to this fork**. [FORK.md](FORK.md) describes fork release boundaries; [MACOS-INSTALLATION.md](MACOS-INSTALLATION.md) documents the older Mac validation packages under their former name. Future Studio candidates and Mac packages need their own validation.
 
 ### OpenScreen
 

docs/releases/purpleprint-studio-subscription-12-windows-draft.md

@@ -0,0 +1,72 @@
+# PurplePrint Studio 1.10.0-subscription.12 — draft
+
+**Windows x64 preview. Not published.** This is an unofficial fork of
+[OpenScreen](https://github.com/getopenscreen/openscreen), not an upstream,
+OpenAI, or Anthropic release or endorsement. The upstream MIT license and
+third-party notices remain included.
+
+## What changes from .11
+
+- The AI session can generate one still-image scene through a connected
+  ChatGPT subscription (Codex) while Claude or another provider stays selected
+  for conversation. Each generation asks for confirmation and uses subscription
+  limits. Studio retains the source image and imports a five-second MP4 clip.
+- AI conversations now persist per project across a full app restart, including
+  messages, generated-image references, manual compaction state and rewind
+  checkpoints. The newest conversation opens on project load.
+- A damaged history file is preserved for recovery instead of being replaced
+  with an empty conversation. Deleting a project also deletes its saved chats.
+
+## Installation and limits
+
+- The Windows installer is unsigned. Verify the checksum and publisher context
+  before choosing whether to run it. Do not disable Windows security controls.
+- The official Codex CLI is an optional user-installed dependency; Studio does
+  not bundle it, copy account tokens, or guarantee model access. Existing
+  API-key and local Claude routes remain available.
+- Generated scenes are still images encoded as short video clips. Animation,
+  Blender, Hyperframe and Design Coach/MCP project handoff are not included.
+- Chats and document checkpoints are local plaintext JSON in Studio's profile;
+  provider credentials remain separate. Conversations lost before this update
+  cannot be reconstructed because prior builds kept them only in memory.
+- There is no macOS or Linux installer in this Windows-only preview. A real Mac
+  record/edit/export pass, Developer ID signing and notarization remain open.
+- A future-version updater download and installation has not yet been tested.
+
+## Candidate artifact (validation only)
+
+- Owner-tested PR head: e46f551d15569109cc7fc42533cb50b650b211a1.
+  The pull-request runner checked out merge commit
+  5f61ed82a8a01d16c5e4d457faf0579b07a86f18.
+- [Full CI](https://github.com/PurplePrintAI/openscreen-subscription/actions/runs/36514529135)
+  and [clean Windows packaging](https://github.com/PurplePrintAI/openscreen-subscription/actions/runs/36514529127)
+  passed. The package validated its native payload, product identity, update
+  origin, packaged CLI, license/notices, checksums and unsigned status.
+- Installer: PurplePrint-Studio-1.10.0-subscription.12-Windows-x64-Setup.exe
+  (245,994,029 bytes).
+- SHA-256: AB32A87267E44A924FCD7E6036D6B28F1CAB6CEF7ADB4850ADD6EFF2181BAE2A.
+- The installer matches windows-validation.json and SHA256SUMS-Windows.txt.
+  Its SHA-512 and byte size also match latest.yml. Authenticode status:
+  NotSigned.
+- This GitHub Actions artifact is a temporary validation download, not a
+  published release or active update feed entry. A later publication build
+  needs its own matching checksum and manifest; do not reuse this hash for a
+  different installer.
+
+## Validation and remaining gates
+
+- [x] The owner installed this exact .12 candidate after backing up 5,637
+  active-profile files. Eight projects, one chat history and two
+  generated-scene files remained; all 13 important hashes matched after
+  installation and QA project launch. The editor displayed the saved
+  two-message conversation and five-second image scene. The owner reported
+  a successful MP4 export; this agent did not inspect or decode that file.
+- [ ] Copy the verified candidate details into a GitHub release draft, with
+  Windows-only and unsigned limitations visible to downloaders.
+- [ ] Receive explicit fork-owner approval before publishing a GitHub Release.
+
+## 한국어 요약
+
+Windows x64용 차기 프리릴리즈 초안입니다. ChatGPT 구독 연결을 이용한
+이미지 장면 생성과 AI 대화 재시작 복원을 포함합니다. 설치 파일은 미서명이며
+Mac 설치 파일은 포함하지 않습니다. 아직 공개 릴리즈가 아닙니다.

nix/package.nix

@@ -51,7 +51,7 @@ buildNpmPackage {
       );
     };
 
-  npmDepsHash = "sha256-MNNWND3d3cZLGvCjU04ZgPPrvnZPtfjD/K9B/mYQA4Q=";
+  npmDepsHash = "sha256-B+/EtcvYOsWcuJJt3l4Js4AzNkr9dAoFW/xjdQb2neE=";
 
   env.ELECTRON_SKIP_BINARY_DOWNLOAD = "1";
 

package.json

@@ -1,7 +1,7 @@
 {
 	"name": "openscreen",
 	"private": true,
-	"version": "1.10.0-subscription.11",
+	"version": "1.10.0-subscription.12",
 	"description": "Record your screen and polish the demo",
 	"homepage": "https://getopenscreen.com/",
 	"license": "MIT",