docs: issue #1533 linkto.php deep-link HTTP 500 bugfix + screenshots Restored the removed testproject::setSessionProject() semantics inline in linkto.php so reqspec/testcase/testsuite inner-frame deep links render again; documents root cause (commit 94c9adf5c), the testproject session contract and the 10/10 regression matrix. Also updated the Direct-Link-Resolver parity note and added the 5 partial-bundle i18n enumeration fix.