dgb: bootstrap src/impl/dgb skeleton (M2) - #60
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Scrypt-only V36 coin module scaffold per c2pool-dgb-embedded-impl-plan.md (8ef8d2d). Mirrors src/impl/btc layout: coin/ + daemon/ + test/ slices, -DCOIN_DGB=ON build gate (guarded, not yet registered top-level). - coin/header_chain.hpp: Scrypt-only validation point; non-Scrypt algos accept-by-continuity, full 5-algo deferred to V37. DigiShield insertion pt. - coin/template_builder.hpp: GBT rules=[scrypt]; p2pool-merged-v36 parity pt. - daemon/README.txt: embedded DigiByte Core slice scope (no in-tree vendor). - test/README.txt: Scrypt fixtures + multi-algo accept-by-continuity + parity. Preserves pre-existing config_coin/config_pool/node stubs. No -DAUX_DOGE (stretch parked behind Phase 5.8). Per-coin isolation held: src/impl/dgb only. Scope: M2 structural skeleton only. node.cpp + share commit/validation wiring (and Scrypt-only template-builder fill + DigiShield finalization) land in M3. Mirrors bch M2 bootstrap discipline.
…tor-only DigiShield note into header_chain.hpp stub (PR #60, M3 prereq)
- Drop empty src/impl/dgb/coin/CMakeLists.txt (referenced only by a commented-out add_subdirectory(coin) in src/impl/dgb/CMakeLists.txt; bch carries none). Parity cleanup, no build impact. config_coin.hpp NOT added: src/impl/dgb/config_coin.hpp already exists on master (tracked, unmodified by this PR -> absent from the diff view) and already defines CoinParams::GBT_ALGO = "scrypt". template_builder.hpp reference is satisfied, not dangling. Per bch-embedded-steward review (UID 632); no scope expansion.
This was referenced Jun 2, 2026
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M2:
src/impl/dgbskeleton — DGB Scrypt-only V36 coin moduleStructural bootstrap of the DGB Scrypt-only coin module, following the approved M1 implementation plan
c2pool-dgb-embedded-impl-plan.md(frstrtr/the docs, 8ef8d2d). V36 ratification context:project_v36_dgb_scrypt_only.Scope: M2 structural skeleton only.
node.cpp+ share commit/validation wiring, Scrypt-only template-builder fill, and DigiShield finalization land in M3. Mirrors the bch M2 bootstrap discipline.Per-coin isolation invariant
src/impl/dgb/only — nosrc/core/orbitcoin_family/touches.-DAUX_DOGEplumbing (the dual-parent stretch / §X is parked behind Phase 5.8; ltc-doge owns the shared DOGE-aux surface).origin/master: 6 files, all undersrc/impl/dgb/.CMake registration held
CMakeLists.txtchange in this PR. Theif(COIN_DGB)guard lives insidesrc/impl/dgb/CMakeLists.txt(message-only at M2;coin/,daemon/,test/subdirs commented out).add_subdirectory(src/impl/dgb)registration is held until ci-steward's PR-CMake-object-library convention lands;impl_dgbregisters as 1 of 5 per-coin OBJECT libs at that point (M3).Files (6)
coin/header_chain.hpp— Scrypt-only validation point; non-Scrypt algos accept-by-continuity (full 5-algo deferred to V37); DigiShield insertion point.coin/template_builder.hpp— GBTrules=[scrypt]; p2pool-merged-v36 parity point.daemon/README.txt— embedded DigiByte Core slice scope (no in-tree vendor).test/README.txt— Scrypt fixtures + multi-algo accept-by-continuity + parity outline.CMakeLists.txt(+coin/CMakeLists.txt) —-DCOIN_DGB=ONbuild gate, guarded.Requested reviewers
bch/bootstrap-skeleton).if(COIN_DGB)must compose with the forthcoming convention).