feat: Obsidian plugin — native .nodepad rendering with full provider support

[Dev-020]

Summary

• Adds a complete Obsidian plugin that renders .nodepad files natively inside the Obsidian workspace (backlog fix: only block actual IPv6 ULA literals in SSRF guard mskayyali/nodepad#22–Additional view options mskayyali/nodepad#26)
• Updates BACKLOG.md with issues fix: only block actual IPv6 ULA literals in SSRF guard mskayyali/nodepad#22–feat: add local LLM support via Ollama mskayyali/nodepad#29 covering this feature and future work
• No changes to the web app's shared lib files — plugin uses its own AI adapter

What changed

New: plugin/ directory

The plugin bundles all nodepad React components via esbuild and mounts them in an Obsidian TextFileView leaf. .nodepad files are stored in the vault and auto-saved on every state change — no Next.js server needed at runtime.

File	Purpose
plugin/src/main.ts	Registers .nodepad extension, ribbon icon, command palette entry
plugin/src/view.tsx	TextFileView subclass, mounts NodepadApp React component via createRoot()
plugin/src/settings.ts	Obsidian settings tab — provider, model, API key, local Ollama toggle
plugin/src/ai-adapter.ts	All AI calls via Obsidian's requestUrl() (CORS-free) + child_process for CLI tools
plugin/src/styles.css	Tailwind tokens mapped to Obsidian CSS variables for automatic theme adaptation
plugin/esbuild.config.mjs	Bundles from local lib/ and components/ — uses your fork's code, not upstream

AI providers in the plugin

Provider	Mechanism	Notes
OpenRouter, OpenAI, Z.ai	requestUrl() → external API	CORS-free in Electron
Ollama	requestUrl() → localhost:11434 or Cloud	Different /api/chat request shape
Gemini CLI	child_process.spawn("gemini")	Two-stage grounding pipeline preserved

Shared component patches (web app unaffected)

• components/ui/sheet.tsx — SheetPortal/SheetContent accept container? prop for portal scoping
• components/about-panel.tsx — forwards container to SheetContent
• components/status-bar.tsx — accepts and forwards portalContainer
• components/vim-input.tsx — isPlugin mode: hides Projects/New Project nav, filters action items to plugin-relevant set, dynamic grid columns

Install instructions

cd plugin
npm install
npm run build

# Run as Administrator — creates a junction so dist/ auto-updates on rebuild
New-Item -ItemType Junction -Path "<vault>\.obsidian\plugins\nodepad" -Target (Resolve-Path .\plugin\dist)

Then: Obsidian → Settings → Community plugins → disable Restricted mode → enable Nodepad

Test plan

• Ribbon icon creates a new .nodepad file and opens it in a leaf
• Tiling / Kanban / Graph view modes render correctly inside Obsidian
• Ctrl+K command palette opens; Projects/New Project hidden; Export MD, Copy MD, Clear shown
• Settings → Nodepad shows provider dropdown with all 5 providers
• Gemini CLI selected → API key field hidden, binary check button shown
• Ollama selected → local toggle and model discovery button shown
• Adding a note with OpenRouter key enriches it with AI annotation
• Adding a note with local Ollama enriches it correctly
• Adding a note with Gemini CLI spawns subprocess and enriches
• Ghost synthesis fires after 5+ enriched blocks across 2+ categories
• Export MD command saves a .md file to vault root
• Web app still functions normally (no regression in shared components)

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