ci: remove temporary PATH probe job

Diagnosis complete: the introspected-node PATH shim is missing in the runner's
memory executor (fixed in the runner), not a codspeed-node issue.

Generated with AI Agent (Claude Code)

Author: GuillaumeLagrange

.github/workflows/codspeed.yml

@@ -7,41 +7,6 @@ on:
   workflow_dispatch:
 
 jobs:
-  # TEMPORARY diagnostic — remove before merge.
-  # Proves whether turbo/pnpm demotes the runner's introspected-node PATH shim
-  # in memory mode. Compares node resolution & flags: (a) directly, (b) through
-  # `pnpm turbo run`, (c) through `pnpm --filter run`.
-  path-probe:
-    name: PATH probe (memory mode)
-    runs-on: "ubuntu-latest"
-    steps:
-      - uses: "actions/checkout@v4"
-        with:
-          fetch-depth: 0
-          submodules: true
-      - uses: pnpm/action-setup@v2
-      - uses: actions/setup-node@v3
-        with:
-          cache: pnpm
-          node-version-file: .nvmrc
-      - run: pnpm install --frozen-lockfile --prefer-offline
-      - run: pnpm turbo run build
-
-      - name: Probe under memory mode
-        uses: CodSpeedHQ/action@main
-        with:
-          mode: memory
-          run: |
-            PROBE='console.log("execPath="+process.execPath); console.log("execArgv="+JSON.stringify(process.execArgv)); console.log("PATHhead="+(process.env.PATH||"").split(":").slice(0,3).join(":")); try { eval("%OptimizeFunctionOnNextCall(()=>{})"); console.log("natives=OK") } catch(e){ console.log("natives=FAIL "+e.message) }'
-            echo "=== (a) direct node (runner PATH intact) ==="
-            echo "PATHhead(shell)=$(echo $PATH | cut -d: -f1-3)"
-            echo "which node=$(command -v node)"
-            node -e "$PROBE"
-            echo "=== (b) via pnpm exec node (pnpm PATH reconstruction, same family as turbo) ==="
-            pnpm exec node -e "$PROBE" || echo "pnpm exec exit=$?"
-            echo "=== (c) via pnpm turbo run bench (real path, expect FAIL) ==="
-            pnpm turbo run bench --filter=@codspeed/tinybench-plugin 2>&1 | grep -iE "execPath|natives|missing required|SyntaxError|Measured" || true
-
   codspeed-instrumented:
     name: Run CodSpeed instrumented (${{ matrix.plugin }})
     runs-on: "ubuntu-latest"