chore: CI workflows, gitignore, release pipeline for v2.0

- Add ci.yml: cargo check + clippy + test on macOS/Linux, dashboard build
- Update release.yml: build dashboard before cargo build, fix x86_64-apple-darwin runner (macos-13)
- Update test.yml: add dashboard build job, update checkout action to v4
- Add .svelte-kit/ and apps/dashboard/node_modules/ to gitignore
- Remove .svelte-kit/ from git tracking (intermediate build artifacts)

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

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
       - run: cargo test --workspace --lib
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
       - run: cargo build --release --package vestige-mcp
@@ -39,16 +39,30 @@ jobs:
     timeout-minutes: 30
     needs: [unit-tests]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
       - run: cargo test --package vestige-e2e-tests --test journey_tests -- --test-threads=1
 
+  dashboard:
+    name: Dashboard Build
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 9
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+      - run: cd apps/dashboard && pnpm install --frozen-lockfile && pnpm build
+
   coverage:
     name: Code Coverage
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: llvm-tools-preview