feat(apollo-react): add markdown formatting utilities for sticky notes (1/3) [MST-7636]

[david-rios-uipath]

Summary

NOTE: this PR is focused on the formatting/interaction logic that's consumed by the sticky note markdown toolbar in the top PR.

Adds markdown editor logic to support bold, italic, strikethrough, bullet lists, and numbered lists.

Final UI (both PRs):

2026-03-30.17.37.18.mp4

Changes

• Smart toggle — clicking a format button when cursor is inside a formatted region removes the markers instead of inserting redundant ones
• Bold+italic detection — correctly detects and toggles ***combined*** markers in toolbar state
• List-aware formatting — applies inline formatting per-line in lists, protecting - and N. prefixes from being wrapped
• Enter key list continuation — auto-inserts next bullet/number on Enter; exits list on empty item
• Line-scoped detection — format detection respects line boundaries to prevent cross-line false positives

Flow

flowchart TD
    A[User action: click toolbar / keyboard shortcut] --> B{Has selection?}
    B -->|No| C{Cursor inside formatted region?}
    C -->|Yes| D[Remove surrounding markers]
    C -->|No| E{On list line?}
    E -->|Yes| F[Wrap line content after prefix]
    E -->|No| G[Insert empty markers at cursor]
    B -->|Yes| H{Multi-line with list items?}
    H -->|Yes| I[Apply formatting per-line, protect prefixes]
    H -->|No| J[Wrap/unwrap selection]
    D --> K[Update activeFormats + set cursor via rAF]
    F --> K
    G --> K
    I --> K
    J --> K

Loading

Testing

• pnpm run test passes (67 suites, 1344 tests)
• pnpm run typecheck passes
• pnpm run lint passes
• Manual testing performed
• Unit tests added (61 tests for markdownFormatting, 10 for FormattingToolbar component)

[github-actions]

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Project	Deployment	Review	Updated (PT)
apollo-canvas	🟢 Ready	Preview, Logs	Apr 01, 2026, 07:19:32 PM
apollo-landing	🟢 Ready	Preview, Logs	Apr 01, 2026, 07:17:03 PM
apollo-ui-react	🟢 Ready	Preview, Logs	Apr 01, 2026, 07:18:30 PM
apollo-vertex	🟢 Ready	Preview, Logs	Apr 01, 2026, 07:17:56 PM
apollo-wind	🟢 Ready	Preview, Logs	Apr 01, 2026, 07:18:04 PM

[github-actions]

Dependency License Review

• ✅ 1924 package(s) scanned
• ✅ No license issues found
• ⚠️ 3 package(s) excluded (see details below)

License distribution

License	Packages
MIT	1689
ISC	89
Apache-2.0	56
BSD-3-Clause	28
BSD-2-Clause	23
BlueOak-1.0.0	8
MPL-2.0	5
MIT OR Apache-2.0	3
MIT-0	3
CC0-1.0	3
LGPL-3.0-or-later	2
(MIT OR Apache-2.0)	2
Unlicense	2
Python-2.0	1
CC-BY-4.0	1
(MPL-2.0 OR Apache-2.0)	1
Unknown	1
Artistic-2.0	1
(WTFPL OR MIT)	1
(BSD-2-Clause OR MIT OR Apache-2.0)	1
CC-BY-3.0	1
0BSD	1
(MIT OR CC0-1.0)	1
MIT AND ISC	1

Excluded packages

Package	Version	License	Reason
@img/sharp-libvips-linux-x64	1.2.4	LGPL-3.0-or-later	LGPL pre-built binary, not linked
@img/sharp-libvips-linuxmusl-x64	1.2.4	LGPL-3.0-or-later	LGPL pre-built binary, not linked
khroma	2.1.0	Unknown	MIT per GitHub repo, missing license field in package.json

[david-rios-uipath]

Current Stack

• main
  • feat(apollo-react): add markdown formatting utilities for sticky notes (1/3) [MST-7636] #427 feat/sticky-note-markdown-formatting ← THIS PR
    • feat(apollo-react): add formatting toolbar to sticky notes (2/3) [MST-7636] #429 feat/sticky-note-formatting-toolbar-v2
      • feat(apollo-react): add remark-breaks to sticky note markdown rendering, scroll improvements (3/3) [MST-7636] #430 feat/sticky-note-formatting-next

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