fix(excalidraw): load public async chunks from the same origin

[Crash--]

Summary

• Set __webpack_public_path__ to the public build path in setupAssetPath.js so Excalidraw's webpack async chunks (browser-fs-access, locales, canvas polyfill) load same-origin.
• They previously loaded from the cross-origin dev server in the public build and failed, which broke the editor's locale and file open/save in dev.

Summary by CodeRabbit

• Bug Fixes
  • Resolved asset and webpack chunk loading from incorrect origins in the /public share build to ensure proper same-origin resolution.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: f46218db-6b94-4db4-87cb-747958ae9d0c

📥 Commits

Reviewing files that changed from the base of the PR and between 22b56a2 and 3d73ab5.

📒 Files selected for processing (1)

• src/modules/views/Excalidraw/setupAssetPath.js

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Walkthrough

This pull request updates setupAssetPath.js to compute a shared assetPath based on the current window location and applies it to two separate asset-resolution mechanisms. The change derives assetPath as /public/ when the pathname starts with /public, otherwise /. It assigns this value to window.EXCALIDRAW_ASSET_PATH only when the global is not already set, and additionally configures webpack's __webpack_public_path__ to the same value for the /public build. This ensures Excalidraw's webpack async chunks resolve from the correct origin regardless of the deployment route.

Suggested reviewers

• rezk2ll
• zatteo
• lethemanh
• JF-Cozy

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: fixing webpack async chunk loading from the correct origin in the public Excalidraw build.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/excalidraw-public-async-chunks

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[codescene-delta-analysis]

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3 Quality Gates Passed

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[bundlemon]

BundleMon

Files updated (2)

Status	Path	Size	Limits
✅	static/js/main.(hash).js	172.3KB (+29B +0.02%)	-
✅	public/static/js/public.(hash).js	147.24KB (+18B +0.01%)	-

Unchanged files (19)

Status	Path	Size	Limits
✅	static/js/(chunkId).(hash).js	1.49MB	-
✅	public/static/js/(chunkId).(hash).js	1.4MB	-
✅	static/js/cozy.(hash).js	918.01KB	-
✅	public/static/js/cozy.(hash).js	778.4KB	-
✅	(hash).js	336.11KB	-
✅	public/(hash).js	336.11KB	-
✅	services/qualificationMigration.js	283.16KB	-
✅	services/dacc.js	262.9KB	-
✅	public/static/js/lib-react.(hash).js	43.88KB	-
✅	static/js/lib-react.(hash).js	43.88KB	-
✅	public/static/css/cozy.(hash).css	31.36KB	-
✅	static/css/cozy.(hash).css	31.36KB	-
✅	public/static/js/lib-router.(hash).js	21.86KB	-
✅	static/js/lib-router.(hash).js	21.86KB	-
✅	static/css/main.(hash).css	11.03KB	-
✅	public/static/css/public.(hash).css	6.74KB	-
✅	manifest.webapp	3.08KB	-
✅	index.html	715B	-
✅	assets/manifest.json	185B	-

Total files change +46B 0%

Groups updated (1)

Status	Path	Size	Limits
✅	**/*.js	12.16MB (+47B 0%)	-

Unchanged groups (2)

Status	Path	Size	Limits
✅	**/*.{png,svg,ico}	2.19MB	-
✅	**/*.css	163.15KB	-

Final result: ✅

View report in BundleMon website ➡️

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Current branch size history | Target branch size history