diff --git a/conductor/workflow.md b/conductor/workflow.md
index dcb882a0..ff9f4258 100644
--- a/conductor/workflow.md
+++ b/conductor/workflow.md
@@ -549,13 +549,24 @@ The recommended execution order is the topological sort of the `blocked_by` grap
 
 ---
 
-## Tier 1 Track Initialization Rules (Added 2026-06-16)
+## Tier 1 Track Initialization Rules (Added 2026-06-16; updated 2026-06-25 with §"The Python Type Promotion Mandate")
 
 These are the rules a Tier 1 Orchestrator follows when initializing a new
 track. They exist because Tier 1 noise (day estimates, day-of-week
-schedules, etc.) propagates into the Tier 2's plans, the user's
-expectations, and the historical record — and most of that noise is
-just wrong.
+schedules, opaque-type promotion, etc.) propagates into the Tier 2's
+plans, the user's expectations, and the historical record — and most
+of that noise is just wrong.
+
+### 0. The Python Type Promotion Mandate (Added 2026-06-25)
+
+Every track spec/plan MUST respect the C11/Odin/Jai-in-Python mandate:
+- **No `dict[str, Any]` outside the wire boundary.** The boundary is 2-3 functions per file (TOML/JSON parse).
+- **No `Any` parameter, return, or field type.**
+- **No `Optional[T]` returns.** Use `Result[T]` + `NIL_T` sentinels per `conductor/code_styleguides/error_handling.md`.
+- **No `hasattr()` for entity type dispatch.** The boundary is typed Union dispatch or per-entity function overloads.
+- **Direct field access on typed `@dataclass(frozen=True, slots=True)` instances.**
+
+When a track's spec proposes lifting entities into `dict[str, Any]` or `Any`, Tier 1 MUST reject and rewrite. See `conductor/code_styleguides/data_oriented_design.md` §8.5 and `conductor/code_styleguides/python.md` §17 for the canonical mandate.
 
 ### 1. NO day / hour / minute estimates in track artifacts