Add jamie-copy-trimmer (48) and dintel-campaign-designer (78) skills

Import two skills authored in Claude Cowork: jamie-copy-trimmer as a
root-only Jamie skill, and campaign-gate-process as dintel-campaign-designer
with full D.intelligence Agent Corps packaging (code/desktop/shared,
agent-id 78, Draft & Wait autonomy) since it now sits inside the 70-79
block. Bumps the corps roster count to 9 agents + 1 meta-agent across all
sibling skills and registers #78 in the shared USER-GUIDE/README. Also adds
.claude/commands wrappers and ~/.claude/skills symlinks so both are usable.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

custom-skills/78-dintel-campaign-designer/shared/templates/gate2-campaign-brief.md

@@ -0,0 +1,32 @@
+# 캠페인 브리프 — Gate 2
+
+<!-- One page. This is the agreement that governs the plan. Approve before Gate 3.
+     Carry forward the objective decided at Gate 1. Korean deliverable. -->
+
+## 1. 목적 <!-- the single primary objective locked at Gate 1 -->
+
+## 2. 타겟
+- 1차 / 2차:
+- 오디언스 프로파일 (한 문장):
+
+## 3. 오퍼 / 핵심 제안
+
+## 4. 메시지
+- 핵심 메시지 (한 문장):
+- 보조 메시지 (2~3):
+
+## 5. 성과 지표 — 4층위 <!-- diversify; label baseline-less numbers as 가설; name the brand asset each qualitative goal touches -->
+- 인지적 (도달 / 상기 / 브랜드 검색량):
+- 정성적 (반응 / 톤 적합성) — **강화 브랜드 자산(속성·연상):**
+- 관계·추천 (재방문 / 추천 의사 / 자발적 후기):
+- 정량 전환 (문의 / 결제) — **[가설? baseline 유무]:**
+
+## 6. 톤 & 채널 방향
+- 톤:
+- 채널 (우선순위):
+
+## 7. 제약 / 컴플라이언스 (요약) <!-- summary only; full detail lives in the plan's 준비 점검 사항 -->
+
+---
+## 게이트 승인
+- [ ] 승인 → **Gate 3 (기획서화)** 진행