docs: redefine approval workflow

docs/TASKS/production-workflow/001-define-production-workflow.md

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+# Task: Define production workflow
+
+## Feature
+
+`docs/FEATURES/production-workflow.md`
+
+## Goal
+
+Define the v1 production workflow for how a `ContentItem` is planned, created, revised, and prepared for review.
+
+## Context
+
+Production workflow has been split from approval workflow. This task should be picked up later after approval workflow is defined.
+
+## Scope
+
+- Define production states or readiness markers.
+- Define production actors.
+- Define asset and revision expectations.
+- Define assignment and ownership expectations.
+- Define how production work prepares a `ContentItem` for review.
+
+## Constraints
+
+- Documentation-only task.
+- Do not change backend or frontend code.
+- Do not redefine approval modes or approval decisions here.
+
+## Done When
+
+- [ ] production scope is defined
+- [ ] production actors are defined
+- [ ] asset and revision rules are defined
+- [ ] readiness-for-review behavior is defined
+- [ ] approval workflow boundaries are explicit
+
+## Validation Commands
+
+```bash
+git diff -- docs/FEATURES docs/TASKS
+```
+