ci: bump skill matrix parser test timeout; install playwright in isolated dir

Unit Tests flaked on QNAP: skillMatrixParser ExcelJS workbook builds exceeded
the 5s default per-test timeout (runtime ~8.6s for the suite). Bumped to 30s.

Docker Deploy smoke tests failed because `npm install` in the repo root tried
to resolve sibling workspace:* deps (pnpm protocol, not npm-supported).
Install @playwright/test into /tmp/pw-install instead and symlink the package
dirs into apps/web/node_modules so the CJS require() in playwright.ci.config.ts
resolves it by walking up from apps/web/.

apps/web/src/lib/skillMatrixParser.test.ts

@@ -21,6 +21,7 @@ async function createWorkbookBuffer(
 
 describe("skill matrix parser", () => {
   it("extracts employee info and merges skills by highest proficiency", async () => {
+    // ExcelJS dynamic import + workbook writeBuffer is slow on constrained CI runners.
     const workbook = await createWorkbookBuffer([
       {
         name: "Employee Information",
@@ -71,7 +72,7 @@ describe("skill matrix parser", () => {
         },
       ]),
     });
-  });
+  }, 30000);
 
   it("rejects duplicate headers in skill sheets", async () => {
     const workbook = await createWorkbookBuffer([
@@ -96,7 +97,7 @@ describe("skill matrix parser", () => {
     ]);
 
     await expect(parseSkillMatrixWorkbook(workbook)).rejects.toThrow('duplicate header "item"');
-  });
+  }, 30000);
 
   it("matches role names by exact and partial matches", () => {
     expect(matchRoleName("Compositing", ["Producer", "Compositing"])).toBe("Compositing");