fix(ci): remove banned V-language build from zig-test/e2e workflows

V-language is banned estate-wide; the sanctioned connector layer is
zig-unified-api-adapter. These workflows still installed and ran V on
every push.

- .github/workflows/zig-test.yml: remove the entire "V-lang Adapter
  Checks" job (cloned/built github.com/vlang/v, then ran v check over
  cartridges/{lsp,dap,bsp}-mcp/adapter .v files). Those .v adapter
  files no longer exist in the repo, so the job was already dead.
- .github/workflows/e2e.yml: remove the "Install V" step (cloned/built
  github.com/vlang/v into /usr/local/bin). The v binary was never
  invoked anywhere else in the e2e job.

Both workflows remain valid YAML.

Out of scope (noted for follow-up review, NOT changed here): the
Justfile still carries live V-lang build/run wiring (build-adapter,
install-v cloning vlang/v, legacy run recipes). That is a separate
source-level change outside this CI-focused fix.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: hyperpolymath

.github/workflows/e2e.yml

@@ -51,11 +51,6 @@ jobs:
         with:
           version: 0.15.0
 
-      - name: Install V
-        run: |
-          git clone --depth 1 https://github.com/vlang/v /tmp/vlang
-          cd /tmp/vlang && make && sudo cp v /usr/local/bin/
-
       - name: Install Deno
         uses: denoland/setup-deno@5fae568d37c3b73e0e4ca63d4e2c4e324a2b3497  # v2
         with:

.github/workflows/zig-test.yml

@@ -70,23 +70,3 @@ jobs:
 
       - name: Run benchmarks
         run: cd ffi/zig && zig build bench
-
-  v-lang-check:
-    name: V-lang Adapter Checks
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-
-      - name: Install V-lang
-        run: |
-          sudo apt-get update && sudo apt-get install -y libgc-dev
-          git clone --depth=1 https://github.com/vlang/v
-          cd v && make && sudo ./v symlink
-          cd ..
-
-      - name: Check LSP/DAP/BSP Adapters
-        run: |
-          for cart in lsp-mcp dap-mcp bsp-mcp; do
-            echo "Checking $cart adapter..."
-            v check cartridges/$cart/adapter/*.v
-          done