verstak-desktop/docs/MILESTONE_6C_DEFAULT_EDITOR_PLAN.md

Milestone 6c — Default Editor Plugin

Goal

Create the official Default Editor Plugin as an openProvider for text, generic markdown, and notes-context markdown files. Core desktop does not own or import the editor component.

What was built

Plugin: verstak.default-editor

Location: verstak-official-plugins/plugins/default-editor/

Manifest declares 3 openProviders:

Provider ID	Context	Extensions
verstak.default-editor.text	generic-text	.txt, .log, .conf, .ini, .toml, .yaml, .yml, .json, .csv
verstak.default-editor.markdown	generic-markdown	.md, .markdown
verstak.default-editor.notes-markdown	notes-markdown	.md, .markdown

All providers use the same DefaultEditor component (unified, not 3 separate editors).

Permissions: files.read, files.write, workbench.open

Capabilities required: verstak/core/files/v1, verstak/core/workbench/v1

Frontend component: DefaultEditor

• Modes: text (textarea), generic-markdown (editor + preview), notes-markdown (editor + preview + notes badge)
• File loading: api.files.readText(path) with loading/error states
• Saving: api.files.writeText(path, content, { overwrite: true }) with dirty/saved/error states
• Keyboard: Ctrl+S / Cmd+S save, Tab indentation
• Markdown preview: Simple renderer (no raw HTML, no script injection)
• Notes context: Badge + info bar, no separate note entity, no .verstak/notes

Verification

• go test ./... — PASS
• go vet ./... — PASS
• npm run build (frontend) — PASS
• npm run test:e2e — 28/28 PASS (20 existing + 8 new)
• scripts/check.sh (official-plugins) — PASS
• scripts/build.sh (official-plugins) — PASS
• SDK checks — PASS

Manual testing

Until Files UI plugin exists, use platform-test diagnostics panel to manually open files via workbench: click "Open Text Diagnostic", "Open Markdown Diagnostic", or "Open Notes Diagnostic" buttons. These call api.workbench.editResource and route through the default-editor provider.

Deferred

• CodeMirror/Monaco editor
• Backlinks, internal link navigation
• Secret widgets
• Image asset pipeline
• Files UI plugin
• Notes UI plugin
• Watcher/sync
• External open
• Sidecar/security isolation