fix(retirement): close projection and launch contract gaps

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a02b7c-1c49-76a0-955a-49e7b3ddfc0d

api/schemas/identifier_migration.py

@@ -0,0 +1,33 @@
+from typing import Any
+
+from pydantic import BaseModel, ConfigDict, Field
+
+
+class SealedProjectionRepairSubmit(BaseModel):
+    plan: dict[str, Any]
+    repo_slug: str = Field(pattern=r"^[a-z0-9][a-z0-9-]{0,99}$")
+    unit: dict[str, Any]
+    expected_plan_sha256: str = Field(pattern=r"^[0-9a-f]{64}$")
+    source_revision: str = Field(pattern=r"^[0-9a-f]{40}$")
+    source_fingerprint: str = Field(pattern=r"^[0-9a-f]{64}$")
+    source_clean: bool
+    source_synchronized: bool
+    primary_confirmed: bool
+    projection_identity: str = Field(min_length=1, max_length=200)
+
+
+class SealedProjectionRepairReceiptRead(BaseModel):
+    model_config = ConfigDict(populate_by_name=True)
+
+    schema_version: str = Field(alias="schema")
+    outcome: str
+    repo_slug: str
+    repository_id: str
+    workplan_record_id: str
+    workplan_old_id: str
+    task_records: list[tuple[str, str]]
+    plan_sha256: str
+    source_revision: str
+    source_fingerprint: str
+    projection_identity: str
+    observed_at: str