dgb(g2): AutoRatchet rig-free SIM KAT — arms staged-migration C2/C3/C4 - #548
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Rig-free C++ counterpart of the G2 staged-migration harness --sim-votes path: proves the AutoRatchet staged-gate LOGIC over hand-derived oracle votes WITHOUT a Scrypt rig or a live digibyted parent. C2 VOTING mints the DGB baseline (v35, SUCCESSOR=None) while voting V36 C3 #288 accept gate is 60%-by-WORK; a 95%-by-COUNT activation cannot outrun it (mint-cannot-outrun-accept); staged tally monotone C4 CONFIRMED state persists across restart; fresh node mints baseline Pinned to DGB own oracle frstrtr/p2pool-dgb-scrypt @22761e7 (terminal v35 -> v36), NOT the ltc v35 transition: VOTING output = base_version=35 ctor param. C3 replicates the live inline 60%-by-WORK tail guard verbatim, the same non-circular pin as dgb_auto_ratchet_tail_guard_test. No consensus surface mutated; src/impl/dgb/ test-tree only + build.yml allowlist. 7/7.
Extends the rig-free AutoRatchet SIM KAT (arming the G2 staged-migration harness) with the C5 row: the V36 SCRYPT-ONLY posture and its load-bearing intersection with the #288 work-weighted accept gate. C5 posture disposition vs coin/dgb_block_algo.hpp SSOT: Scrypt header -> VALIDATE_SCRYPT (the only validated PoW lane); SHA256d/Skein/Qubit/Odo + legacy Groestl -> ACCEPT_BY_CONTINUITY (work-neutral); unknown algo nibbles -> REJECT. C5/work-neutral accept-by-continuity blocks credit ZERO work, so a >=95%- by-headcount V36 majority carried by non-Scrypt algos canNOT outrun the 60%-by-work ratchet accept gate -- the multi-algo analogue of C3_MintCannotOutrunAccept. Only Scrypt votes ever move the gate. Pins the consensus SSOT (dgb_block_algo.hpp, itself guarded vs upstream DigiByte Core by algo_select_test); no consensus surface mutated. FENCED to src/impl/dgb/ test-tree. 9/9 (was 7/7).
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FENCED, additive rig-free SIM KAT — the C++ counterpart of the G2 staged-migration harness
--sim-votespath. Proves the AutoRatchet staged-gate LOGIC over hand-derived oracle votes WITHOUT a Scrypt rig or a live digibyted parent (the shell harness is binary-gated; this unblocks the G2 gate logic proof now).Checks (7/7 PASS locally on build_dgb):
Pinned to DGBs OWN oracle frstrtr/p2pool-dgb-scrypt @22761e7 (terminal v35 -> v36), NOT the ltc v35 transition: the VOTING output is base_version=35 (ctor param). C3 replicates the live inline 60%-by-WORK tail guard verbatim — the same non-circular pin as dgb_auto_ratchet_tail_guard_test. No consensus surface mutated; touches src/impl/dgb/ test tree + build.yml allowlist only (#143 NOT_BUILT trap avoided).
Mirror of the BTC sim KAT (#btc/g2-autoratchet-sim-kat). NO self-merge.