fix: delete removed tabs when pushing.

[knightedcodemonkey]

• ci: no runs on next branch.
• closes Remove the playwright run on the next branch. #119

[Copilot]

Pull request overview

This PR updates the workspace sync/push flow so that removing a previously-synced tab results in a delete entry being included in the next “push commit” to an active PR. It also updates CI config to stop running the Playwright workflow on the next branch (per #119).

Changes:

• Track removed synced tabs and include delete updates for their paths when pushing commits to an active PR.
• Add Playwright coverage to validate delete entries are shown and sent to the Git Trees API after a tab is removed.
• Update the Playwright GitHub Actions workflow to no longer run on pull requests targeting next.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/modules/app-core/workspace-tab-mutations-controller.js	Hooks tab removal to track deleted paths before pushing.
src/modules/app-core/workspace-sync-controller.js	Stores removed paths per workspace and emits delete entries during push; clears tracked deletions after push updates.
src/modules/app-core/workspace-controllers-setup.js	Threads the new trackRemovedWorkspaceTab dependency through controller setup.
src/app.js	Wires trackRemovedWorkspaceTab to the sync controller implementation.
playwright/github-pr-drawer/active-context-sync.spec.ts	Adds an E2E test asserting removed synced module tabs are pushed as delete entries.
.github/workflows/playwright.yml	Removes the next branch from PR triggers.

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