fix(ci): require portable inventory reports on selected runs (#3549)

Run complete portable-inventory validation whenever code tests are selected and the job is not cancelled. Missing timing reports now fail rather than bypassing the existing validator. Preserve partial diagnostics and successful-history ownership.

Verified the baseline regression, missing/present report and cancellation/selection controls, actual Vitest blob/report failure paths, static checks, actionlint and test discovery.

Fixes #3542

Co-authored-by: Kaoru0822 <208281322+kaoru0822-kitauji@users.noreply.github.com>
Co-authored-by: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com>

.github/workflows/ci.yml

@@ -433,7 +433,7 @@ jobs:
           --outputFile.junit=test-results.xml
           --outputFile.json=test-results.json
       - name: Summarize slowest test files
-        if: needs.changes.outputs.code == 'true' && !cancelled() && hashFiles('test-timings.json') != ''
+        if: needs.changes.outputs.code == 'true' && !cancelled()
         env:
           SHARD_RESULT: ${{ needs.test-shard.result }}
           SOURCE_REQUIRED: ${{ needs.changes.outputs.tier == 'fast' }}