docs(control-center): checkpoint Package D before runtime admission

[blakinio]

Purpose

Persist the full Package D repository state before any live Track A admission so continuation does not depend on chat context.

Saved state

• exact trusted main before checkpoint: 56499ec5767093f69f09c581c54957714382e107;
• all repository implementation stages docs(control-center): design real Package D adapter #670/feat(control-center): implement Package D semantic adapter core #672/feat(track-a): add Package D guarded dispatch infrastructure #674/feat(control-center): bridge Official adapter to Track A guard #676/docs(track-a): make Package D input lock normative #677/feat(track-a): add Package D external bridge transport #678 recorded with merge SHAs;
• exact-main repository validation recorded: Control Center 154/154 PASS, Package A fresh/P1 audits PASS with MATERIAL_FINDINGS_OPEN=0, Track A transport 4/4, input lock 6/6, transition 28/28, lease 14/14, guard 3/3, Ruff PASS;
• fresh runtime-ownership preflight recorded: runtime(track-a): validate causal worldmap server delivery #475 released/no runtime owner, runtime(track-a): native login to in-game E2E v3 #528 closed/superseded, feat(track-a): persistent KasmVNC desktop and controller handoff #541 isolated KasmVNC-only with no Official Tibia/login/gameplay authority;
• stale external-transport blocker removed and external transport merge feat(track-a): add Package D external bridge transport #678 recorded.

Safety

runtime_access:none, mutation_authorized:false, official_client_access:false. No Official Tibia runtime/process/window/session/input/login/credential/gameplay access occurred in this checkpoint. The next legal step remains a fresh complete Track A runtime admission before any live operation.

Changed files: active Package D task + one new pre-runtime evidence document only.