Add loop process docs and reusable run templates

docs/run-template/01-input/README.md

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+# Step 1 Input Template
+
+## Input
+- file:
+- source path:
+- request:
+- constraints:
+
+## Evaluation
+- judgement: pass / revise / fail
+- reason:
+- failure category:

docs/run-template/02-kei-interpretation/README.md

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+# Step 2 Interpretation Template
+
+## Interpretation
+- core purpose:
+- preserve meaning:
+- risks:
+- validation criteria:
+
+## Evaluation
+- judgement: pass / revise / fail
+- reason:
+- failure category:

docs/run-template/03-structure/README.md

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+# Step 3 Structure Template
+
+## Structure
+- primary message:
+- support message:
+- section structure:
+- area assumptions:
+
+## Evaluation
+- judgement: pass / revise / fail
+- reason:
+- failure category:

docs/run-template/04-plan/README.md

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+# Step 4 Plan Template
+
+## Stage Plan
+1.
+2.
+3.
+
+## Validation / Retry
+- validation points:
+- retry rules:
+- fallback path:
+
+## Evaluation
+- judgement: pass / revise / fail
+- reason:
+- failure category:

docs/run-template/05-execution/README.md

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+# Step 5 Execution Template
+
+## Execution
+- used script / code path:
+- outputs:
+- warnings:
+- retries:
+
+## Evaluation
+- judgement: pass / revise / fail
+- reason:
+- failure category:

docs/run-template/06-validation/README.md

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+# Step 6 Validation Template
+
+## Validation
+- purpose fit:
+- meaning preservation:
+- rendering:
+- quality:
+- final decision: pass / revise / fail
+
+## Next Action
+1.
+2.
+3.
+
+## Evaluation
+- judgement:
+- reason:
+- failure category:
+- rollback point:

docs/run-template/README.md

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+# Run Template
+
+이 폴더는 새 run을 만들 때 그대로 복사하는 템플릿이다.
+
+## 구조
+- `01-input`
+- `02-kei-interpretation`
+- `03-structure`
+- `04-plan`
+- `05-execution`
+- `06-validation`
+
+## 규칙
+- 각 단계는 결과 파일 + 판정 메모를 남긴다.
+- 성공/실패 판정은 생략하지 않는다.
+- 다음 run 반영 사항은 반드시 `06-validation`에 남긴다.