fix: resolve Deno examples CI failure after version bump (#610)

When Version Packages PR was merged, Deno examples failed because they
used `npm:web-csv-toolbox` specifier which queries npm registry for the
latest version. Since the new version wasn't published yet, Deno
downloaded the old version from npm instead of using the local build.

Changes:
- Use deno.json import map to directly reference local dist files
- Remove npm: prefix from imports in index.ts files
- Delete setup.ts scripts that copied builds to npm cache (no longer needed)
- Remove "Setup Deno workspace structure" step from CI workflow
- For slim example, explicitly pass WASM file path to loadWASM()

This ensures Deno examples use the local build artifacts directly,
avoiding npm registry lookups entirely.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude <noreply@anthropic.com>

Author: kamiazya

.github/workflows/.examples.yaml

@@ -196,11 +196,6 @@ jobs:
         with:
           deno-version: lts
 
-      - name: Setup Deno workspace structure
-        run: |
-          cd examples/deno/${{ matrix.example }}
-          deno task setup
-
       - name: Run example - ${{ matrix.example }}
         run: |
           cd examples/deno/${{ matrix.example }}

examples/deno/main/deno.json

@@ -2,7 +2,9 @@
   "$schema": "https://deno.land/x/deno/cli/schemas/config-file.v1.json",
   "nodeModulesDir": "auto",
   "tasks": {
-    "setup": "deno run --allow-read --allow-write setup.ts",
     "start": "deno run --allow-read index.ts"
+  },
+  "imports": {
+    "web-csv-toolbox": "../../../dist/node/main.node.js"
   }
 }

examples/deno/main/index.ts

@@ -1,4 +1,4 @@
-import { parseString, parseStringToArraySyncWASM } from 'npm:web-csv-toolbox';
+import { parseString, parseStringToArraySyncWASM } from 'web-csv-toolbox';
 
 console.log('🦕 Deno Main Version Test');
 console.log('Features: Auto WASM initialization via npm: prefix\n');

examples/deno/main/setup.ts

@@ -2,7 +2,9 @@
   "$schema": "https://deno.land/x/deno/cli/schemas/config-file.v1.json",
   "nodeModulesDir": "auto",
   "tasks": {
-    "setup": "deno run --allow-read --allow-write setup.ts",
     "start": "deno run --allow-read index.ts"
+  },
+  "imports": {
+    "web-csv-toolbox/slim": "../../../dist/node/slim.node.js"
   }
 }

examples/deno/slim/deno.json

@@ -1,4 +1,4 @@
-import { loadWASM, parseStringToArraySyncWASM } from 'npm:web-csv-toolbox/slim';
+import { loadWASM, parseStringToArraySyncWASM } from 'web-csv-toolbox/slim';
 
 console.log('🦕 Deno Slim Entry Test');
 console.log('Features: Manual WASM initialization via npm: prefix, smaller JS bundle\n');
@@ -11,9 +11,10 @@ try {
   console.log();
 
   // Slim entry: Must initialize WASM manually
-  // With npm: prefix, Deno uses Node.js loader which auto-resolves WASM path
+  // For local development, specify the WASM file path explicitly
   console.log('⏳ Initializing WASM...');
-  await loadWASM(); // No argument needed - will use import.meta.resolve internally
+  const wasmPath = new URL('../../../dist/csv.wasm', import.meta.url);
+  await loadWASM(wasmPath);
   console.log('✅ WASM initialized\n');
 
   // Now we can use sync WASM APIs