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The per-role log split renamed BOTH halves so that an un-updated reader would fail loudly instead of silently reading half a session. It worked: CI found four readers this way. This is them. - MG_Util/Debug/Log.h: the role vocabulary now exists in the PULL build too, header-only. It was wholly inside #if MOBILEGL_BUILD_DISAGGREGATED, so PipeInputsTest - which builds in the verify flavour - could not name ReadRoleLogs and took the whole build-linux-verify job down at compile time. Inline rather than out-of-line because of G1: nothing in the library calls these, so an inline definition emits code into the readers and NOTHING into libMobileGL.so. Verified: pull symbols 30570 -> 30570, 0 added / 0 removed, .text still 0xa52203, and zero role-log symbols in the pull library. - PipeStatsWindow.h: the harness copy of the naming rule is now flavour-aware. It derived `.client` in BOTH flavours, so in the verify build - one role, MOBILEGL_LOG_FILE_PATH written unchanged - it opened a file that never existed. The copy has to stay a copy: MG_Util's RoleLogPath is `t` (local) in the shipping .so this module links, so calling it does not link. Added LogMark/MarkLaneLog/ReadLaneLogSince: one offset PER ROLE, because a single scalar over the concatenation slides by whatever the other role wrote. - The four arming scenarios: they asserted on lines the BACKEND emits, and under inproc the backend runs on the apply thread - the server role - so the line lands in the server's log. Reading only the client's half reported the emulation unarmed, i.e. accused the product of a defect the reader invented. Four copies of the same private helper pair now delegate to the harness. - scripts/ci/magma_runahead_checks.py: it unlinked and read the base name as if it were a file, so the negative arm saw an empty log and could not prove the knob took. It now imports split_log_paths' derivation - the authoritative one - rather than becoming a third copy. Local verification (WSL, lk-split + c6-pull): - the 4 CI-red entries: 10/10 PASS under inproc, 10/10 under monolith - unit role-log readers: 510/510 PASS - magma_runahead_checks negative: run_ahead_0 EXPECTED_RED, restored GREEN - the 5 affected TUs compile clean with MOBILEGL_BUILD_DISAGGREGATED=0 - G1: 0/0/0/0, .text 0xa52203 Red-once is the CI run itself (35677991453), which failed for each of these reasons before the change.