Plannotator Visual Explainer

Three paths depending on content type. Each has its own references and structure.

Route by content type

Implementation plan, design doc, or proposal → Follow the Plan path. Read references/design-system.md and references/svg-patterns.md. Prescriptive structure.

PR explainer, diff review, or code change walkthrough → Follow the PR path. Read references/design-system.md and references/pr-components.md. Prescriptive structure.

Everything else (architecture diagrams, data tables, slide decks, project recaps, general visual explanations) → Follow the Visual explainer path. Delegates to nicobailon/visual-explainer with Plannotator theme tokens.

Delivery

Always deliver via Plannotator's annotation UI. Do NOT use open or xdg-open.

For any deliverable that uses Mermaid, render every diagram with Mermaid 11 in both the light and dark palettes before opening the annotation UI. Rendering is a hard gate: an exception, empty SVG, or error output such as aria-roledescription="error" or Syntax error in text means the explainer is not deliverable. Fix the diagram or theme configuration and rerun both palettes until every SVG passes.

Plans/proposals (user should approve/deny):

plannotator annotate <file> --gate

Everything else (informational):

plannotator annotate <file>

Plan path

For implementation plans, design docs, feature specs, migration guides, and proposals.

Before generating, read:

1. references/design-system.md — Plannotator theme tokens, typography, component patterns
2. references/svg-patterns.md — inline SVG building blocks for architecture diagrams, flowcharts, data flow

Document structure (in order, pick what fits):

1. Header — eyebrow label (mono, uppercase), title (serif, large), prompt box (the original brief)
2. Summary strip — 3-5 stat cards showing key numbers at a glance (components, endpoints, tables, etc.)
3. Milestones / timeline — vertical timeline showing phases without time estimates. Phases show sequence and dependencies, not duration.
4. Architecture / data flow — inline SVG diagram. Use for 3+ interacting components. Highlighted boxes for new components, dashed arrows for async paths.
5. Mockups — build UI mockups in HTML/CSS directly, not as descriptions
6. Key code — dark-theme code blocks with syntax highlighting. Only architecturally significant interfaces/schemas — not every function.
7. Risks & mitigations — table with severity badges (HIGH/MED/LOW)
8. Open questions — callout cards with decision owner ("Decide with: backend team")

Not every plan needs every section. Skip what doesn't serve the content. Never include time estimates, boilerplate sections, or exhaustive file lists.

Adapt to the task: Backend → lead with data flow. Frontend → lead with mockups. Refactoring → lead with before/after diagrams. Infrastructure → lead with architecture.

Quality bar: The plan answers "what, why, and how" within 30 seconds of reading. Whitespace is a feature — one idea per viewport.

PR path

For PR walkthroughs, diff reviews, code change explainers, and reviewer guides.

Before generating, read:

1. references/design-system.md — Plannotator theme tokens, typography, component patterns
2. references/pr-components.md — diff rendering, review comment bubbles, risk chips, file cards, before/after panels

Document structure (in order, pick what fits):

1. Header — PR title, meta strip (file count, +/- lines, branch, author)
2. TL;DR — bordered card with primary accent left border. 2-3 sentences. Readers who see nothing else should get the gist.
3. Why — motivation and before/after comparison (two-column grid)
4. File tour — collapsible cards per file. Each has: file path + badge (NEW/MOD/DEL) + line stats, a "why" paragraph, and important diff hunks. High-risk files expanded, safe files collapsed.
5. Risk map — visual chips showing which files need careful review vs. which are mechanical. Three tiers: attention (destructive), medium (warning), safe (success).
6. Where to focus — numbered callout cards. Each names a file/function and describes the concern.
7. Test plan — checkbox-style verification checklist
8. Rollout (if applicable) — phased deployment with feature flags

Use Pierre diffs via CDN for syntax-highlighted inline diffs — see references/pr-components.md for the pattern.

Visual explainer path

For architecture diagrams, data tables, slide decks, project recaps, comparisons, and any other visual explanation.

Before generating:

1. Ensure visual-explainer is installed:
   • Check: ~/.claude/skills/visual-explainer/SKILL.md or ~/.agents/skills/visual-explainer/SKILL.md
   • If not found: npx skills add nicobailon/visual-explainer -g --yes
2. Read visual-explainer's SKILL.md (workflow, diagram types, anti-slop rules)
3. Read the relevant visual-explainer references and templates for your content type
4. Read references/theme-override.md — Plannotator tokens replacing Nico's palettes

Follow visual-explainer's structure, component classes (.ve-card, .kpi-card, .pipeline), and anti-slop rules. The only override is the color/typography layer — Plannotator tokens instead of Nico's custom palettes.

Design philosophy (all paths)

• Whitespace is a feature. Generous padding, large section gaps. If cramped, add space — don't shrink text.
• One idea per viewport. Hero section, then diagram, then detail grid — not all crammed together.
• Show, don't describe. A timeline shows sequencing. A diagram shows relationships. A code block shows the interface.
• No time estimates. Timelines show phases and dependencies. Never attach hour/day estimates.