Add comprehensive Product Manager process document for OctoAcme

[Copilot]

This PR adds a new process document specifically designed for Product Managers at OctoAcme, addressing the need for standardized workflows and clear guidance on product management responsibilities.

What's Added

New Document: docs/octoacme-product-manager-process.md

A comprehensive 200+ line process document that provides Product Managers with:

• Primary Responsibilities: Clear definition of 5 core responsibility areas including product vision, backlog management, stakeholder alignment, outcome measurement, and customer advocacy
• Core Workflows: Detailed processes for product discovery, roadmap planning, feature definition, cross-functional collaboration, and measurement & iteration
• Stakeholder Alignment Framework: Regular communication cadence and clear stakeholder group definitions with specific interaction patterns
• Backlog Management Process: Complete framework including health criteria, prioritization methods, and refinement activities
• Measurement & Continuous Improvement: Success metrics framework, data-driven decision making, and continuous learning processes

Practical Tools Included

The document provides immediately usable templates and checklists:

• Feature Specification Template: Structured format for defining new features with problem statements, success metrics, and acceptance criteria
• Multiple Checklists: Roadmap planning, sprint planning, and monthly review checklists for consistent execution
• Communication Templates: Status update format and feature launch communication guidelines
• Escalation Framework: Clear decision authority and escalation paths for different types of issues

Design Principles

This document follows the established OctoAcme documentation patterns:

• Consistent markdown structure with clear section hierarchy
• Practical, actionable guidance that can be implemented immediately
• Integration with existing process documents through cross-references
• Focus on collaboration and cross-functional alignment
• Templates and checklists that match the style of other OctoAcme process docs

The document complements the existing Product Manager role definition in octoacme-roles-and-personas.md by providing detailed operational guidance for day-to-day product management activities.

Purpose

This addition enables Product Managers to:

• Quickly onboard to OctoAcme's product management approach
• Access standardized templates and processes for consistent execution
• Understand cross-functional collaboration expectations
• Implement data-driven decision making and continuous improvement practices

The document can also be used as context for Copilot Spaces to provide role-specific guidance for Product Manager workflows.

This pull request was created as a result of the following prompt from Copilot chat.

Create a new process document specifically for Product Managers at OctoAcme, based on the style and structure of the existing docs in the repository. The document should:

• Be placed in the docs/ directory as octoacme-product-manager-process.md
• Clearly outline the primary responsibilities, core workflows, and key deliverables for Product Managers
• Reference cross-functional collaboration, stakeholder alignment, backlog management, measurement of outcomes, and continuous improvement
• Use checklists or templates where helpful, following the format of other docs
• Be consistent in tone and format with the rest of the documentation

Draft a Pull Request with this new file and a concise summary explaining its purpose.

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