Add single-file Quote Float desktop entry

[keida]

Summary

• Adds a self-contained Windows x64 single-file Quote Float desktop entry.
• Default launch mode is LaunchAndWatch: it attaches to an official Codex process when present or uses the existing official Codex activation path when Codex is absent. --watch is passive watch mode and --direct starts independently without Codex watching.
• Embeds the Civic app icon in the WPF executable and reuses it for the tray icon with explicit icon-handle cleanup.

Validation

• Release build: 0 warnings, 0 errors.
• Accepted focused validation: 31 fixtures / 62 checks passed on the same final candidate before publication.
• Current publication rerun was blocked only by the already-running user Desktop Quote Float.exe, which holds the fixed single-instance mutex. No user process was closed or manipulated.
• Single-file publish produced exactly one executable: QuotaFloat.Wpf.exe.
• Published artifact: 71,674,344 bytes; SHA-256 A38269E4B0B0A82353DEC5FBA38B08C1C6F9FC16F183F52E6FA412E7F8E77890.
• PE validation: Windows GUI subsystem, embedded icon group present, icon extraction passed.
• Privacy scan over the nine changed files passed.

Limitation

• The Codex-absent activation path was not live-tested, to avoid changing the user's active Codex state. It is covered by static and deterministic validation only.
• This PR does not merge, tag, or create a release.

中文摘要

• 新增自包含 Windows x64 单文件 Quote Float 桌面入口。
• 默认无参数模式为 LaunchAndWatch；--watch 为被动观察，--direct 为独立启动。
• 内嵌 Civic 应用图标，并复用到托盘图标，同时清理图标句柄。
• 已完成 Release 构建、单文件发布和隐私扫描；当前测试重跑受用户桌面上已运行的 Quote Float.exe 单实例互斥体影响，未关闭或操控该进程。

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-10T22:49:35.979007Z	5156fb3	PR opened

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[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 5156fb3e37

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

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