Full M.D.C. combat: tier interaction, armor ablation, and unprotected outcomes

[StreamDemon]

Issue #44 deliberately stops at the S.D.C. tier. This follow-up extends its persisted exchange ledger with the complete Mega-Damage rules after re-verifying the rendered Rifts Ultimate Edition pages.

Scope:

• M.D. weapon damage against M.D.C. protection.
• S.D.C./Hit Point attacks against M.D.C. protection, including imperviousness and any printed conversion exceptions.
• The final armor point/final-blast absorption rule and behavior after protection reaches zero.
• M.D. against an unprotected mortal, including any injury, coma, or death state the current character schema cannot represent.
• Pure deterministic rules, atomic Convex persistence, UI result presentation, and migration/compatibility with A.R. & armor damage in combat: strike-vs-A.R., armor ablation, the M.D.C. scope decision #44 history.

Rendered sources to reverify before design: RUE pp.288 and 355-359. Do not implement from remembered Palladium rules.

Depends on #44.

[StreamDemon]

Draft PR: #55

Verified delivery evidence as of 2026-07-22 (Asia/Singapore):

• rules: check clean (60/60 formatted, 46/46 lint/type clean); 358/358 tests
• backend: check clean (13/13 formatted, 15/15 lint/type clean); 128/128 tests
• web: check clean (37/37 formatted, 33/33 lint/type clean); 52/52 tests
• root: check clean (130/130 formatted, 95/95 lint/type clean); 538/538 tests
• git diff --check: clean
• package task caching was explicitly disabled for the recorded package gates

Live acceptance ran 2026-07-21 (Asia/Singapore) with attacker j5765xjcskpg5jwrj32qx3br9d8azgwe and defender j57b5e6myeyxxhffcqwy09kg8n8ayxw9. The production UI verified legal M.D. selection, native armor ablation, final-blast absorption with no spill, depleted-shell strike totals 7/8, sub-100 S.D.C. imperviousness, M.D.-to-body fatal conversion, legacy and v2 history together, terminal dossier behavior, cleanup cancellation, and same-document parameter navigation. Desktop 1440px and narrow 390x844 acceptance had no horizontal overflow; the fresh browser console had zero errors and zero warnings. Ports 5173 and 3210 were closed after cleanup.

Catalog limitation: the legal catalog has no S.D.C. armor and no S.D.C. attack profile capable of 100+ completed damage. The 100+ S.D.C.-against-M.D.C. conversion rows and M.D.-against-S.D.C.-armor A.R. rows are verified by exact rules/backend tests, not browser UI. No temporary or invented content was added to manufacture those scenarios.

Optional RUE pp.358-359 injury/survival remains in #54. The generic page-stamped effects pipeline remains roadmap #53.