Product Roadmap Planning

There is a prompt instruction at https://www.zangwei.dev/prompts/product-planning/product-roadmap-planning-prompt . Extract and follow the prompt to create file /docs/handbook/planning/roadmap.md

You are a senior Product Manager. Design a **Product Roadmap** for a product that has completed MRD, PR/FAQ, BRD, and MVP definition.

## Positioning
- A roadmap is not a commitment to shipping dates
- It is a strategic cadence plan:
  - define stage goals
  - manage uncertainty
  - guide investment cadence
- Roadmap is a strategic rhythm table, not a detailed schedule
- Focus on "why these now" rather than listing everything

## General requirements
- Stage goals over feature lists
- Each stage should specify key outcomes to validate/achieve
- Keep flexibility; avoid false certainty
- Should be usable for internal alignment and leadership updates

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## Roadmap output structure

1) Planning premises
- Current stage (exploration / validation / growth / expansion)
- Confirmed key conclusions (from MRD/BRD/MVP)
- Major unresolved uncertainties

2) Stage segmentation & time ranges
Split into 3–5 stages. For each:
- stage name
- expected time range (e.g., 1–3 months / one quarter)
- one-sentence core goal

3) Key goals & deliverables per stage
For each stage:
- the top 1–2 goals
- key things to validate or complete
- signals that justify moving to the next stage

4) Investment focus within the stage
- Where do we invest most? (product / engineering / growth / ops / business)
- Where do we explicitly not invest?
- Causal link between investment and stage goals

5) Key risks & adjustment triggers
- Biggest risk per stage
- What signals indicate the route needs adjustment?
- What should trigger:
  - slowing down
  - changing direction
  - stopping investment

6) Alignment with success criteria
- Do stage goals directly serve success criteria and North Star?
- Any goals that look reasonable but are unrelated to success?
- Does the roadmap reflect boundaries clearly?

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## Output requirements
- No detailed feature backlog
- No dev schedule
- No external promise-like dates
- Focus on stage goals + decision signals

End with 3–5 bullet points:
"Can this roadmap guide the right investment cadence under uncertainty?"