refactor: rename CLAUDE.md to AGENTS.md (#8052)

## Summary

Pure rename of CLAUDE.md files to AGENTS.md (no content changes).

## Changes

| Old Path | New Path |
|----------|----------|
| `.github/CLAUDE.md` | `.github/AGENTS.md` |
| `.storybook/CLAUDE.md` | `.storybook/AGENTS.md` |
| `browser_tests/CLAUDE.md` | `browser_tests/AGENTS.md` |
| `src/CLAUDE.md` | `src/AGENTS.md` |
| `src/components/CLAUDE.md` | `src/components/AGENTS.md` |
| `src/lib/litegraph/CLAUDE.md` | `src/lib/litegraph/AGENTS.md` |

Root `CLAUDE.md` deleted (content will be merged into `AGENTS.md` in
follow-up PR).

## Follow-up

A second PR will add glob-based guidance files and consolidate
redundancies.

---------

Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: Christian Byrne <cbyrne@comfy.org>

browser_tests/AGENTS.md

@@ -0,0 +1,8 @@
+# E2E Testing Guidelines
+
+See `@docs/guidance/playwright.md` for Playwright best practices (auto-loaded for `*.spec.ts`).
+
+## Directory Structure
+
+- `assets/` - Test data (JSON workflows, fixtures)
+- Tests use premade JSON workflows to load desired graph state

browser_tests/CLAUDE.md

@@ -1,17 +1,3 @@
-# E2E Testing Guidelines
-
-## Browser Tests
-- Test user workflows
-- Use Playwright fixtures
-- Follow naming conventions
-
-## Best Practices
-- Check assets/ for test data
-- Prefer specific selectors
-- Test across viewports
-
-## Testing Process
-After code changes:
-1. Create browser tests as appropriate
-2. Run tests until passing
-3. Then run typecheck, lint, format
+<!-- In gardens where the agents freely play,
+     One stubborn flower turns the other way. -->
+@AGENTS.md