Migrate app icons to Phosphor

[Just-Insane]

Description

Migrate the app-level icon API to Phosphor-backed icons so remaining Icon, Icons, IconSrc, and IconName usages no longer import the old Folds icon implementation.

This adds a local $app/icons compatibility layer that maps the existing Icons.* names to Phosphor components, preserves the existing Icon call shape, and rewires source imports to use that layer while leaving non-icon Folds UI imports in place.

Changeset: patch - migrate the app icon API to Phosphor-backed icons.

Related to SableClient#523 and SableClient#934. Related to #64.

Fixes #

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

AI disclosure:

• Partially AI assisted (clarify which code was AI assisted and briefly explain what it does).
• Fully AI generated (explain what all the generated code does in moderate detail).

This PR was generated by Codex. It adds a Phosphor-backed icon adapter, maps the previous app icon names to Phosphor components, updates imports across the app to use $app/icons, adds a patch changeset, and validates that no direct old Folds icon API imports remain.

Validation:

• pnpm fmt:check
• pnpm lint (0 errors; existing warnings only)
• pnpm typecheck
• pnpm test:run (130 files, 1229 tests)
• pnpm knip
• pnpm build

[chatgpt-codex-connector]

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Reviewed commit: 2f3f1ebd8a

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[github-code-quality]

Code Coverage Overview

Languages: JavaScript

JavaScript / code-coverage/vitest

The overall coverage in the codex/phosphor-icon-... branch remains at 21%, unchanged from the integration branch.

Show a code coverage summary of the most impacted files.

File	integration aecd6bb	codex/phosphor-icon-... f414eba	+/-
src/app/icons/index.tsx	0%	100%	+100%

---

_{Updated June 14, 2026 15:21 UTC
Code Coverage is in Public Preview. Learn more and provide us with your feedback.}

[github-actions]

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Alias: pr-65
Commit: f414eba
Updated: Sun, 14 Jun 2026 15:20:53 GMT

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: f414eba34a

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[chatgpt-codex-connector]

Restore the add-reaction cue for SmilePlus

Icons.SmilePlus is used as the icon-only “More reactions” button in MobileMessageMenu (the button’s only visible affordance is this glyph), but the new mapping renders Phosphor’s sticker-smiley instead of a smile/add glyph. On mobile this can read as a stickers action rather than opening the reaction picker, so keep a visible plus/add cue for this alias.

Useful? React with 👍 / 👎.