server: use single XDG server database

web/workspace/README.md

@@ -27,13 +27,12 @@ The Vite dev server proxies `/api/*` to `http://127.0.0.1:8787`, so frontend hot
 If you want to run the backend from the repository root instead:
 
 ```bash
-cargo run -p yoi-workspace-server -- serve \
-  --workspace . \
-  --db .yoi/workspace.db \
-  --listen 127.0.0.1:8787
+cargo run -p yoi-workspace-server -- serve --listen 127.0.0.1:8787
 ```
 
-## Static build served by Rust backend
+The backend reads Workspace records from the Yoi server DB at `<data_dir>/server/server.db`. Run `cargo run -p yoi-workspace-server -- init --workspace .` first when the server DB has not been initialized.
+
+## Static build
 
 Build the SPA:
 
@@ -41,25 +40,7 @@ Build the SPA:
 deno task build
 ```
 
-Then serve the static build and API from the Rust backend:
-
-```bash
-cargo run -p yoi-workspace-server -- serve \
-  --workspace ../.. \
-  --db ../../.yoi/workspace.db \
-  --frontend build \
-  --listen 127.0.0.1:8787
-```
-
-From the repository root, the equivalent command is:
-
-```bash
-cargo run -p yoi-workspace-server -- serve \
-  --workspace . \
-  --db .yoi/workspace.db \
-  --frontend web/workspace/build \
-  --listen 127.0.0.1:8787
-```
+Static asset packaging is a deployment concern. Local development normally uses the Vite dev server proxy plus the Rust backend command above.
 
 ## Checks
 

web/workspace/deno.json

@@ -4,7 +4,7 @@
   "tasks": {
     "install": "deno install",
     "dev": "deno run -A npm:vite@7.2.7 dev",
-    "dev:backend": "cd ../.. && cargo run -p yoi-workspace-server -- serve --workspace . --db .yoi/workspace.db --listen 127.0.0.1:8787",
+    "dev:backend": "cd ../.. && cargo run -p yoi-workspace-server -- serve --listen 127.0.0.1:8787",
     "check": "deno run -A npm:@sveltejs/kit@2.49.4 sync && deno run -A npm:svelte-check@4.3.4 --tsconfig ./tsconfig.json",
     "test": "deno test --allow-read=src --allow-env=VSCODE_TEXTMATE_DEBUG src/lib/workspace/auth/model.test.ts src/lib/workspace/api/http.test.ts src/lib/workspace/console/chat-submit.test.ts src/lib/workspace/console/composer-command.test.ts src/lib/workspace/console/composer-completion.test.ts src/lib/workspace/console/markdown.test.ts src/lib/workspace/console/model.test.ts src/lib/workspace/console/worker-console.ui.test.ts src/lib/workspace/settings/model.test.ts src/lib/workspace/sidebar/workers.test.ts src/lib/workspace/sidebar/worker-launch.test.ts src/lib/workspace/sidebar/repository-nav.test.ts",
     "build": "deno run -A npm:vite@7.2.7 build",