Add spec, plan, and tasks for 030-bulk-import-sources feature

Defines the "Bulk Import All Sources" feature for the on-demand bestiary
system: one-click loading of all ~104 bestiary sources with concurrent
fetching, progress feedback, toast notifications, and completion reporting.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

specs/030-bulk-import-sources/quickstart.md

@@ -0,0 +1,44 @@
+# Quickstart: Bulk Import All Sources
+
+## Prerequisites
+
+- Node.js 20+, pnpm
+- Feature 029 (on-demand bestiary) merged and working
+
+## Setup
+
+```bash
+git checkout 030-bulk-import-sources
+pnpm install
+pnpm --filter web dev
+```
+
+## Key Files
+
+| File | Role |
+|------|------|
+| `apps/web/src/hooks/use-bulk-import.ts` | NEW — bulk import state + logic |
+| `apps/web/src/components/bulk-import-prompt.tsx` | NEW — side panel bulk import UI |
+| `apps/web/src/components/toast.tsx` | NEW — lightweight toast notification |
+| `apps/web/src/components/action-bar.tsx` | MODIFIED — Import button added |
+| `apps/web/src/components/stat-block-panel.tsx` | MODIFIED — bulk import mode |
+| `apps/web/src/App.tsx` | MODIFIED — wiring |
+| `apps/web/src/hooks/use-bestiary.ts` | MODIFIED — expose fetchAndCacheSource for bulk use |
+
+## Testing
+
+```bash
+pnpm test                    # All tests
+pnpm vitest run apps/web/src # Web app tests only
+pnpm check                   # Full merge gate
+```
+
+## Manual Verification
+
+1. Open app at `localhost:5173`
+2. Click Import button (top bar) — side panel opens with bulk import prompt
+3. Verify base URL is pre-filled, editable
+4. Click "Load All" — observe progress counter and bar
+5. Close side panel mid-import — toast appears at bottom-center
+6. Wait for completion — toast shows success/failure message
+7. Search for any creature — stat block displays without fetch prompt