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* docs(readme): replace free-tier budget mockup with animated SMIL card Single detailed card (1200x872, 10s loop, SMIL only — plays inside GitHub's img sandbox): ~1.6B/mo hero + honest-math panel (struck-through ~10B, 15 providers ToS-flagged), animated budget bar of the 21 countable free pools, full per-model grid (Mistral Large 3 1.00B -> Auto 25K), ~616M first-month signup-credit chips, permanently-free no-cap providers + $10 OpenRouter top-up, and a live used/remaining footer. The generated mockup docs/screenshots/free-tier-budget-card.svg stays in place — it is produced by scripts/research/gen-budget-card-svg.mjs and still referenced by the i18n READMEs (zh-CN/zh-TW); only the root README embed changes. Registered in the hand-authored table in docs/diagrams/README.md. * chore(changelog): fragment for #7665
title, version, lastUpdated
| title | version | lastUpdated |
|---|---|---|
| Diagrams | 3.8.49 | 2026-07-17 |
Diagrams
Mermaid sources (.mmd) and exported SVGs for OmniRoute v3.8.0 architecture flows.
Canonical diagrams
| Source | Exported | Used in |
|---|---|---|
| request-pipeline.mmd | SVG | docs/architecture/ARCHITECTURE.md, docs/architecture/CODEBASE_DOCUMENTATION.md |
| auto-combo-12factor.mmd | SVG | docs/routing/AUTO-COMBO.md |
| resilience-3layers.mmd | SVG | docs/architecture/RESILIENCE_GUIDE.md, CLAUDE.md |
| i18n-flow.mmd | SVG | docs/guides/I18N.md |
| mcp-tools-94.mmd | SVG | docs/frameworks/MCP-SERVER.md |
| cloud-agent-flow.mmd | SVG | docs/frameworks/CLOUD_AGENT.md |
| authz-pipeline.mmd | SVG | docs/architecture/AUTHZ_GUIDE.md |
| db-schema-overview.mmd | SVG | docs/architecture/CODEBASE_DOCUMENTATION.md |
Hand-authored animated diagrams
Not every diagram comes from a .mmd source. Hand-authored SVGs live at this
directory's root and animate with SMIL only (no JS, no external fonts), so they play
inside GitHub's <img> sandbox:
| File | Used in | Notes |
|---|---|---|
| tier-cascade.svg | README.md (root) | Animated 4-tier auto-fallback cascade (16s loop, 4 acts). Edit the SVG directly — there is no .mmd source. |
| pool-fair-share.svg | README.md (root) | Animated key-pool fair-share quota (generous → strict, 16s loop). Edit the SVG directly — there is no .mmd source. |
| combo-always-on.svg | README.md (root) | Animated priority-combo fallback (4 layers, 16s loop). Edit the SVG directly — there is no .mmd source. |
| cli-terminal.svg | README.md (root) | Animated terminal cycling 3 CLI commands (providers/combo/health) + subcommand ticker (18s loop). Edit the SVG directly — there is no .mmd source. |
| compression-pipeline.svg | README.md (root) | Animated 10-engine compression funnel (8s loop). Edit the SVG directly — there is no .mmd source. |
| free-tier-budget.svg | README.md (root) | Animated free-tier budget card (~1.6B/mo headline, 21-pool budget bar, per-model grid, signup credits, 10s loop). Edit the SVG directly — there is no .mmd source. |
How to update
- Edit
*.mmd. - Re-render:
npm run docs:render-diagrams(uses@mermaid-js/mermaid-cli). - Commit both
.mmdand.svg.
If @mermaid-js/mermaid-cli is not available locally, install it once:
npm install -g @mermaid-js/mermaid-cli
The script renders every .mmd in docs/diagrams/ into docs/diagrams/exported/*.svg
with a white background, suitable for both dark and light themes.
Linking from a doc
From a doc in docs/<subfolder>/, the relative path becomes ../diagrams/...:

> Source: [../diagrams/request-pipeline.mmd](../diagrams/request-pipeline.mmd)
From the repo root (e.g. CLAUDE.md):

Conventions
- One concept per diagram. Don't try to fit the whole platform in one chart.
- Keep node labels short (3-6 words). Use
<br/>for line breaks inside nodes. - Prefer
flowchart LRfor pipelines andflowchart TBfor layered models. - Use
sequenceDiagramfor interactive (request/response) flows. - Use
erDiagramfor database schema overviews. - Update both
.mmdand.svgin the same commit. Keep them in lock-step.