feat: migrate bookmark storage from JSON/workspaceState to Drizzle ORM + SQLite

[Copilot]

Replaces the existing bookmark persistence mechanism (.vscode/bookmark-manager.json and VSCode workspaceState) with a SQLite database managed via Drizzle ORM, stored in the extension's home directory (~/.config/bookmark-manager/bookmarks.db).

Schema

Four tables defined in src/database/schema.ts:

• bookmarks — full bookmark data per workspace
• bookmark_groups — custom group definitions
• store_meta — per-workspace view preferences (viewType, groupView, sortedType, version)
• group_info — sorted order for grouping views

New: DatabaseService

src/services/DatabaseService.ts exposes:

• save(workspaceName, storeInfo) — transactional upsert of all data for a workspace
• load(workspaceName) — returns IBookmarkStoreInfo | null
• has(workspaceName) — existence check
• delete(workspaceName) — removes all data for a workspace

Controller changes

BookmarksController.save() now routes to _saveToDatabase() instead of workspaceState when createJsonFile=false. On first load, old workspaceState data is migrated to SQLite automatically and cleared.

// Before
this.workspaceState.update(EXTENSION_ID, this._store);

// After
this._saveToDatabase(); // per-workspace rows in SQLite
this.workspaceState.update(EXTENSION_ID, null); // clear legacy state

Multi-workspace support: _loadFromDatabase() merges data across all workspace folders, deduplicating groups and groupInfo entries.

Bundling

better-sqlite3 is a native addon — externalized in webpack config and explicitly included in .vscodeignore (negation pattern) so it ships with the packaged extension. skipLibCheck: true added to tsconfig.json to suppress unrelated type errors from drizzle-orm's optional peer adapters.

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Latest commit: 2a52cb5

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