## Summary
Adds a `@perf` test to establish a baseline for viewport panning GC
churn on large graphs.
## Changes
- **What**: New `large graph viewport pan sweep` perf test that pans
aggressively back and forth across a 245-node graph, forcing many nodes
to cross the viewport boundary. Measures style recalcs, forced layouts,
task duration, heap delta, and DOM node count.
## Review Focus
This is **PR 1 of 2** (perf-fix-with-proof pattern). The fix (viewport
culling) will follow in a separate PR once this baseline is established
on main. CI will then show the delta proving the improvement.
The test uses 120 steps out + 120 steps back at 8px/step = ~960px total
displacement, enough to sweep across a significant portion of the large
graph layout.
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-10479-test-add-perf-test-for-viewport-pan-sweep-GC-churn-32d6d73d365081cc9f15fe3d5890675d)
by [Unito](https://www.unito.io)
## Summary
Major refactoring of browser tests to improve reliability,
maintainability, and type safety.
## Changes
### Test Infrastructure Decomposition
- Decomposed `ComfyPage.ts` (~1000 lines) into focused helpers:
- `CanvasHelper`, `DebugHelper`, `SubgraphHelper`,
`NodeOperationsHelper`
- `SettingsHelper`, `WorkflowHelper`, `ClipboardHelper`,
`KeyboardHelper`
- Created `ContextMenu` page object, `BaseDialog` base class, and
`BottomPanel` page object
- Extracted `DefaultGraphPositions` constants
### Locator Stability
- Added `data-testid` attributes to Vue components (sidebar, dialogs,
node library)
- Created centralized `selectors.ts` with test ID constants
- Replaced fragile CSS selectors (`.nth()`, `:nth-child()`) with
`getByTestId`/`getByRole`
### Performance & Reliability
- Removed `setTimeout` anti-patterns (replaced with `waitForFunction`)
- Replaced `waitForTimeout` with retrying assertions
- Replaced hardcoded coordinates with computed `NodeReference` positions
- Enforced LF line endings for all text files
### Type Safety
- Enabled `no-explicit-any` lint rule for browser_tests via oxlint
- Purged `as any` casts from browser_tests
- Added Window type augmentation for standardized window access
- Added proper type annotations throughout
### Bug Fixes
- Restored `ExtensionManager` API contract
- Removed test-only settings from production schema
- Fixed flaky selectors and missing test setup
## Testing
- All browser tests pass
- Typecheck passes
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Tests**
* Overhauled browser E2E test infrastructure with many new
helpers/fixtures, updated test APIs, and CI test container image bumped
for consistency.
* **Chores**
* Standardized line endings and applied stricter lint rules for browser
tests; workspace dependency version updated.
* **Documentation**
* Updated Playwright and TypeScript testing guidance and test-run
commands.
* **UI**
* Added stable data-testids to multiple components to improve
testability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
