diff --git a/docs/research/pre_work_error_ledger.md b/docs/research/pre_work_error_ledger.md
index 93ffc8c2..77f3f432 100644
--- a/docs/research/pre_work_error_ledger.md
+++ b/docs/research/pre_work_error_ledger.md
@@ -61,6 +61,7 @@ For large architecture or release work, also read:
 | ERR-028 | Active birth-time rectification can stop at question generation and never narrow candidate clusters from user answers. | mitigated 2026-07-09 | `active_rectification_questions.score_answers()` must turn A/B/C/D answers into cluster rankings, next-round questions, and an explicit boundary that final rectification still needs candidate chart differences. |
 | ERR-029 | Basic git and premium cloud-drive skill packages can blur contents, privacy exclusions, and external-engine promises. | mitigated 2026-07-09 | `scripts/skill_release_manifest.py` must define edition contents, excluded private material, acceptance commands, and external-engine runtime boundaries before packaging. |
 | ERR-030 | Release packaging can misread non-ASCII tracked filenames when parsing quoted `git ls-files` output. | mitigated 2026-07-09 | Package builders must use `git ls-files -z` and decode NUL-separated paths before writing zip archives. |
+| ERR-031 | Premium skill zip can ship without user install prompts or replay schemas, leaving users and future oracle imports without a contract. | mitigated 2026-07-09 | `skill_release_package.py` must inject `INSTALL.md` and `USER_PROMPTS.md`; replay contracts must live in `references/real_case_calibration/` and `references/oracle/`. |
 
 ## Fragment Sweep Command Set
 
diff --git a/references/oracle/three_engine_parity_replay.schema.json b/references/oracle/three_engine_parity_replay.schema.json
new file mode 100644
index 00000000..03f76815
--- /dev/null
+++ b/references/oracle/three_engine_parity_replay.schema.json
@@ -0,0 +1,115 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "Three Engine Same-Chart Parity Replay",
+  "type": "object",
+  "required": [
+    "case_id",
+    "birth_data_policy",
+    "engines",
+    "comparison_rows",
+    "status"
+  ],
+  "properties": {
+    "case_id": {
+      "type": "string"
+    },
+    "birth_data_policy": {
+      "type": "string",
+      "enum": [
+        "public_case_only",
+        "anonymized_private_case",
+        "operator_local_only"
+      ]
+    },
+    "engines": {
+      "type": "object",
+      "properties": {
+        "VedAstro": {
+          "type": "object",
+          "properties": {
+            "status": {
+              "type": "string"
+            },
+            "official_raw_response_path": {
+              "type": "string"
+            },
+            "artifact_hash": {
+              "type": "string"
+            }
+          }
+        },
+        "PyJHora_JHora": {
+          "type": "object",
+          "properties": {
+            "status": {
+              "type": "string"
+            },
+            "raw_output_path": {
+              "type": "string"
+            },
+            "settings": {
+              "type": "object"
+            }
+          }
+        },
+        "jyotishganit": {
+          "type": "object",
+          "properties": {
+            "status": {
+              "type": "string"
+            },
+            "raw_output_path": {
+              "type": "string"
+            }
+          }
+        }
+      }
+    },
+    "comparison_rows": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "required": [
+          "section",
+          "field",
+          "local_value",
+          "oracle_values",
+          "status"
+        ],
+        "properties": {
+          "section": {
+            "type": "string"
+          },
+          "field": {
+            "type": "string"
+          },
+          "local_value": {},
+          "oracle_values": {
+            "type": "object"
+          },
+          "status": {
+            "type": "string",
+            "enum": [
+              "match",
+              "mismatch",
+              "blocked",
+              "not_comparable"
+            ]
+          }
+        }
+      }
+    },
+    "status": {
+      "type": "string",
+      "enum": [
+        "not_started",
+        "blocked",
+        "partial",
+        "complete"
+      ]
+    },
+    "blocked_reason": {
+      "type": "string"
+    }
+  }
+}
diff --git a/references/real_case_calibration/catalog.schema.json b/references/real_case_calibration/catalog.schema.json
new file mode 100644
index 00000000..cc579bda
--- /dev/null
+++ b/references/real_case_calibration/catalog.schema.json
@@ -0,0 +1,140 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "Real Case Calibration Catalog",
+  "type": "object",
+  "required": [
+    "case_id",
+    "source",
+    "chart_signature",
+    "event_outcomes",
+    "similarity",
+    "replay"
+  ],
+  "properties": {
+    "case_id": {
+      "type": "string"
+    },
+    "source": {
+      "type": "object",
+      "required": [
+        "url",
+        "source_grade",
+        "license_or_quote_boundary"
+      ],
+      "properties": {
+        "url": {
+          "type": "string"
+        },
+        "source_grade": {
+          "type": "string",
+          "enum": [
+            "primary",
+            "verified_secondary",
+            "forum_claim",
+            "unverified"
+          ]
+        },
+        "license_or_quote_boundary": {
+          "type": "string"
+        }
+      }
+    },
+    "chart_signature": {
+      "type": "object",
+      "properties": {
+        "lagna": {
+          "type": "string"
+        },
+        "moon_sign": {
+          "type": "string"
+        },
+        "d9_lagna": {
+          "type": "string"
+        },
+        "ul": {
+          "type": "string"
+        },
+        "a7": {
+          "type": "string"
+        },
+        "a10": {
+          "type": "string"
+        },
+        "notable_yogas": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      }
+    },
+    "event_outcomes": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "required": [
+          "event_type",
+          "event_date",
+          "outcome"
+        ],
+        "properties": {
+          "event_type": {
+            "type": "string"
+          },
+          "event_date": {
+            "type": "string"
+          },
+          "outcome": {
+            "type": "string"
+          },
+          "source_excerpt_note": {
+            "type": "string"
+          }
+        }
+      }
+    },
+    "similarity": {
+      "type": "object",
+      "properties": {
+        "score": {
+          "type": "number"
+        },
+        "matching_factors": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        },
+        "dissimilar_factors": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      }
+    },
+    "replay": {
+      "type": "object",
+      "properties": {
+        "outcome_replay_status": {
+          "type": "string",
+          "enum": [
+            "not_started",
+            "blocked",
+            "partial",
+            "complete"
+          ]
+        },
+        "conflict_notes": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        },
+        "do_not_use_for_prediction": {
+          "type": "boolean"
+        }
+      }
+    }
+  }
+}
diff --git a/scripts/skill_release_package.py b/scripts/skill_release_package.py
index 96c67ada..bc8c3a81 100644
--- a/scripts/skill_release_package.py
+++ b/scripts/skill_release_package.py
@@ -21,6 +21,34 @@ except ModuleNotFoundError:  # pragma: no cover - direct script execution
 ROOT = Path(__file__).resolve().parents[1]
 SKIP_PREFIXES = ("scratch/", "references/open_source_sources/", ".git/", "__pycache__/")
 SKIP_NAMES = {".env", ".env.local"}
+GENERATED_DOCS = {
+    "INSTALL.md": """# Jyotish Skill Install
+
+1. Unzip this package into a local folder.
+2. Run `python3 scripts/public_release_privacy_scan.py`.
+3. Run `python3 scripts/user_invocation_acceptance_check.py`.
+4. If the check passes, load this folder as a Codex skill/plugin or call `mcp_server.py`.
+5. VedAstro cloud evidence is optional. Without `official_raw_response`, reports must say `official_blocked` or `local_fallback`.
+
+Do not add private birth data, API keys, or desktop oracle screenshots to this package.
+""",
+    "USER_PROMPTS.md": """# User Prompts
+
+## User Has No Question
+
+请根据我的出生信息先运行统一主链，生成 evidence_packet、guided_topics 和 Technique Audit Table。
+不要反问我想看什么；请先给出 3-5 个最值得继续看的方向，并附可直接复制的问题。
+
+## High-Rigor Reading
+
+请使用 strict_workflow，并在输出中标明 VedAstro / PyJHora-JHora / jyotishganit / Real Case Calibration 的状态。
+如果没有 VedAstro official_raw_response，请标记 official_blocked 或 local_fallback。
+
+## Birth-Time Rectification
+
+请使用主动问询式校时：先生成候选时间扫描和选择题，我只回答 A/B/C/D。
+""",
+}
 
 
 def _git_files() -> list[str]:
@@ -59,6 +87,7 @@ def build_package_plan(edition: str = "premium_cloud_drive") -> dict[str, Any]:
         "privacy_scan_status": privacy["status"],
         "file_count": len(files),
         "files": files,
+        "generated_files": sorted(GENERATED_DOCS),
         "boundary": "Dry-run plan only; use --write-zip to create a local zip, then upload manually if desired.",
     }
 
@@ -71,6 +100,8 @@ def write_zip(edition: str, output: Path) -> dict[str, Any]:
     with zipfile.ZipFile(output, "w", compression=zipfile.ZIP_DEFLATED) as archive:
         for rel in plan["files"]:
             archive.write(ROOT / rel, rel)
+        for rel, text in GENERATED_DOCS.items():
+            archive.writestr(rel, text)
     return {**plan, "mode": "write_zip", "zip_path": str(output)}
 
 
diff --git a/tests/test_calibration_replay_schemas.py b/tests/test_calibration_replay_schemas.py
new file mode 100644
index 00000000..a078315f
--- /dev/null
+++ b/tests/test_calibration_replay_schemas.py
@@ -0,0 +1,34 @@
+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def _load(path: str) -> dict:
+    return json.loads((ROOT / path).read_text(encoding="utf-8"))
+
+
+def test_real_case_calibration_schema_defines_replay_contract() -> None:
+    schema = _load("references/real_case_calibration/catalog.schema.json")
+    props = schema["properties"]
+
+    assert schema["title"] == "Real Case Calibration Catalog"
+    assert {"case_id", "source", "chart_signature", "event_outcomes", "similarity", "replay"} <= set(props)
+    assert props["source"]["properties"]["source_grade"]["enum"] == ["primary", "verified_secondary", "forum_claim", "unverified"]
+    assert "outcome_replay_status" in props["replay"]["properties"]
+    assert "do_not_use_for_prediction" in props["replay"]["properties"]
+
+
+def test_three_engine_parity_replay_schema_defines_raw_oracle_slots() -> None:
+    schema = _load("references/oracle/three_engine_parity_replay.schema.json")
+    engines = schema["properties"]["engines"]["properties"]
+
+    assert schema["title"] == "Three Engine Same-Chart Parity Replay"
+    assert {"VedAstro", "PyJHora_JHora", "jyotishganit"} <= set(engines)
+    assert "official_raw_response_path" in engines["VedAstro"]["properties"]
+    assert "raw_output_path" in engines["PyJHora_JHora"]["properties"]
+    assert "comparison_rows" in schema["properties"]
+    assert "blocked_reason" in schema["properties"]
diff --git a/tests/test_skill_release_package.py b/tests/test_skill_release_package.py
index 59df2390..ed6582e7 100644
--- a/tests/test_skill_release_package.py
+++ b/tests/test_skill_release_package.py
@@ -29,4 +29,12 @@ def test_skill_release_package_can_write_zip(tmp_path) -> None:
         names = set(archive.namelist())
     assert "SKILL.md" in names
     assert "scripts/skill_release_manifest.py" in names
+    assert "INSTALL.md" in names
+    assert "USER_PROMPTS.md" in names
     assert ".env.local" not in names
+    with zipfile.ZipFile(target) as archive:
+        install = archive.read("INSTALL.md").decode("utf-8")
+        prompts = archive.read("USER_PROMPTS.md").decode("utf-8")
+    assert "python3 scripts/user_invocation_acceptance_check.py" in install
+    assert "guided_topics" in prompts
+    assert "official_blocked" in prompts