Prepare Ceiling 1.5.20

[tsouth89]

Summary

• bump Ceiling to 1.5.20 across the Rust, Tauri, frontend, and installer version sources
• headline the duplicate Copilot monthly-reset notification fix
• include the reliability and account-isolation hardening merged after 1.5.19
• add concise draft release notes for the signed installer workflow

Validation

• powershell.exe -ExecutionPolicy Bypass -NoProfile -File scripts/local-check.ps1 -All -Version 1.5.20
  • Rust format
  • shared and desktop clippy with warnings denied
  • 779 shared Rust tests
  • desktop Rust test suite
  • full frontend test suite and production build
  • release doctor for 1.5.20

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	ceiling	1448eab	Commit Preview URL Branch Preview URL	Aug 01 2026, 05:02 AM

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 354469da-440b-4e4b-9440-3799f7a00494

📥 Commits

Reviewing files that changed from the base of the PR and between a132308 and 1448eab.

⛔ Files ignored due to path filters (1)

• Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (7)

• .github/release-notes-1.5.20.md
• CHANGELOG.md
• apps/desktop-tauri/package.json
• apps/desktop-tauri/src-tauri/Cargo.toml
• apps/desktop-tauri/src-tauri/tauri.conf.json
• rust/Cargo.toml
• version.env

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[Copilot]

Pull request overview

Prepares the Ceiling 1.5.20 release by synchronizing version numbers across the Rust crates, Tauri shell, frontend package metadata, and build-number sources, and by adding 1.5.20 changelog + draft GitHub release notes that highlight the recent notification/reliability/account-isolation fixes.

Changes:

• Bump marketing/app/package versions from 1.5.19 → 1.5.20 (and build number 121 → 122) across release sources.
• Add a 1.5.20 changelog entry summarizing the shipped fixes and internal validation note.
• Add draft GitHub release notes for 1.5.20, including installer artifact names and compare link.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
version.env	Updates marketing version and build number for the 1.5.20 release.
rust/Cargo.toml	Bumps the shared Rust crate version to 1.5.20.
CHANGELOG.md	Adds the 1.5.20 release entry with fix summaries and an internal note.
Cargo.lock	Updates locked package versions to 1.5.20 for the relevant crates.
apps/desktop-tauri/src-tauri/tauri.conf.json	Bumps the Tauri app version to 1.5.20.
apps/desktop-tauri/src-tauri/Cargo.toml	Bumps the Tauri Rust backend crate version to 1.5.20.
apps/desktop-tauri/package.json	Bumps the frontend package version to 1.5.20.
.github/release-notes-1.5.20.md	Adds draft release notes for the 1.5.20 GitHub release.

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