Initial import: open-design source for helix-mind.ai distribution

This repository contains the open-design daemon CLI source code, built
and packaged at https://helix-mind.ai/cli/open-design/latest.tgz for use
by the HelixMind /design slash command.

Licenses: Apache-2.0 (root) + MIT (skills/*)

docs/plans/manual-edit-mode-implementation.md

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+# Manual Edit Mode Implementation Plan
+
+Source requirement: `specs/current/manual-edit-mode-requirements.md`.
+
+Base branch: `origin/main` at `72edd4fc6090a3fda4ed175bd35dca76099a82f2`.
+
+Implementation branch: `codex/manual-edit-mode`.
+
+## Goal
+
+Migrate the accepted manual edit-mode prototype into the production Open Design web app.
+
+The product boundary is fixed:
+
+- `Edit` is manual HTML/CSS editing.
+- `Comment` remains the AI-assisted scoped edit path.
+- `Tweaks` is for global/token parameters.
+- `Draw` is annotation input and does not mutate HTML/CSS in v1.
+
+## Implementation Steps
+
+1. Add `apps/web/src/edit-mode/` with typed targets, patches, history, iframe bridge, and source patch helpers.
+2. Integrate manual edit state into the HTML branch of `FileViewer`.
+3. Enable the existing `Edit` toolbar button only for HTML/deck-HTML artifacts.
+4. Keep comment mode and edit mode mutually independent; do not send manual edits to chat or daemon agent runs.
+5. Save manual patches through the existing project file write provider, then refresh preview source.
+6. Add the accepted layout: layers rail, canvas-first preview, right edit modal, and changes panel.
+7. Add English i18n keys plus conservative fallback locale entries.
+8. Add focused tests for patch helpers and the main browser smoke path.
+
+## Acceptance Criteria
+
+- Manual edit mode starts from latest `origin/main`.
+- User can select a preview element or a layer row.
+- Content, style, attributes, selected HTML, and full source edits are source-backed.
+- Undo and redo work during the session.
+- Attribute edits do not delete unrelated attributes or prior style edits.
+- Comment mode still works as the AI edit path.
+- Share/export and deck navigation still work after the edit-mode changes.
+
+## Verification Commands
+
+```bash
+pnpm --filter @open-design/web typecheck
+pnpm --filter @open-design/web test
+pnpm --filter @open-design/e2e test:ui -- --grep "manual edit"
+pnpm typecheck
+pnpm test
+pnpm check:residual-js
+```