Sync: Complete project state with all MEGA SPRINT V1-V3 features and Codex stubs

ralph/templates/CODEX_NEXT_TASK_PROMPT.md

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+Write the next autonomous Ralph task as a single Markdown document.
+
+Requirements:
+
+- Output only the Markdown task document, with no preface and no code fences.
+- This task is for Ralph swarm automation, not a human chat response.
+- The task must be actionable, specific, and based only on repository truth and run artifacts.
+- The task must continue the current line of development.
+- Prefer runtime validation, exact evidence, and concrete acceptance criteria.
+- If the previous run failed, focus on the highest-signal blockers first.
+- If the previous run succeeded, focus on the next most valuable improvement.
+- Keep the task self-contained so it can be submitted directly into the inbox.
+
+Required Markdown structure:
+
+# <short title>
+
+## Goal
+
+## Why This Task Exists
+
+## Required Work
+
+## Acceptance Criteria
+
+## Validation
+
+## Context
+
+Rules:
+
+- Be strict and senior.
+- Do not overclaim completion.
+- Do not ask for manual handoff or manual reasoning from the operator.
+- Assume Ralph will run this automatically.