feat: add tech-diagram skill (Mermaid 技术图生成) (#18)

## 概述 / Summary

新增市场技能 **tech-diagram**:把自然语言描述转成品牌一致的技术图(架构图/流程图/时序图/状态机/ER/类图/思维导图),在
DesireCore 对话内复用现有 Mermaid 渲染管线即时渲染为 SVG。

Adds a market skill **tech-diagram** that turns natural-language
descriptions into brand-consistent technical diagrams, rendered inline
as SVG by the existing Mermaid pipeline in the DesireCore chat.

灵感来源 / Inspired by
[fireworks-tech-graph](https://github.com/yizhiyanhua-ai/fireworks-tech-graph)
的三个设计思路:语义词汇表即数据、风格系统化、领域 Pattern 内置——并落到 DesireCore 自己的 3+2 设计令牌与领域模型上。

## 改动 / Changes

- `skills/tech-diagram/SKILL.md` + `SKILL.zh-CN.md`:双语技能正文(强制风格规则 +
语义词汇表 + 输出约定)
- `skills/tech-diagram/references/semantic-vocabulary.md`:概念→Mermaid
形状→3+2 classDef 完整映射
- `skills/tech-diagram/references/templates.md`:4 个 DesireCore
领域模板(Agent 架构 / Delegate 6 模式 / 三层记忆 / 关系图谱)+ 时序图示例
- `builtin-skills.json`:加入 `tech-diagram`
- `manifest.json`:`version` 1.2.1→1.2.2,`stats.totalSkills`
21→22,`lastUpdated`

## 设计要点 / Design

- **风格一致性**:每张图以 `%%{init}%%` 注入品牌主题(覆盖对话全局暗色),用 5 个 `classDef` 绑定
DesireCore 3+2 配色(green/blue/purple + warning orange / error red)。
- **语义优于视觉**:Agent→六边形、系统/记忆→圆角/圆柱、决策→菱形;箭头编码主数据流/记忆写入/异步/层级/上报。
- **领域内置**:直接对照 `delegate.ts` / `conversation-memory.ts` /
`relations/projector.ts` 给出可套用模板。

## 验证 / Verification

-  `scripts/i18n/validate-i18n.py`:无 i18n 问题
-  用 app 同版本 **mermaid 11.15.0**(securityLevel: loose)解析 `templates.md`
全部 5 个图块,全部通过
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2026-05-30 23:56:27 +08:00
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---
name: tech-diagram
description: >-
Use this skill when the user wants to turn a description into a technical
diagram — architecture diagrams, flowcharts, sequence diagrams, state
machines, ER diagrams, class diagrams, or mind maps. Generates brand-consistent
Mermaid that the DesireCore chat renders inline as SVG, styled with the
DesireCore 3+2 design tokens and a semantic shape/arrow vocabulary. Use this
for diagrams of structure, flow, or relationships — NOT for photographic or
illustrative images (use an image-generation skill for those).
Use when 用户提到 画架构图、架构图、流程图、时序图、序列图、状态图、状态机、
ER图、类图、思维导图、出图、画图、可视化、画一张图、画个图、draw diagram、
architecture diagram、flowchart、sequence diagram。
version: 1.0.0
type: procedural
risk_level: low
status: enabled
disable-model-invocation: false
tags:
- diagram
- mermaid
- architecture
- flowchart
- visualization
metadata:
author: desirecore
updated_at: '2026-05-30'
i18n:
default_locale: en-US
source_locale: zh-CN
locales:
- zh-CN
- en-US
zh-CN:
name: 技术架构图生成
short_desc: 用 Mermaid 画品牌一致的架构图/流程图/时序图,对话内即时渲染
description: >-
当用户希望把描述转成技术图时使用此技能——架构图、流程图、时序图、状态机、ER 图、类图或思维导图。生成符合 DesireCore 3+2 设计令牌与语义形状/箭头词汇表的 Mermaid对话内即时渲染为 SVG。用于结构、流程或关系类图而非写实摄影/插画类图片(后者请用文生图技能)。用户提到 画架构图、架构图、流程图、时序图、序列图、状态图、状态机、ER图、类图、思维导图、出图、画图、可视化、画一张图、画个图。
body: ./SKILL.zh-CN.md
source_hash: 'sha256:1f74e524df631a67'
translated_by: human
en-US:
name: Tech Diagram Generator
short_desc: Draw brand-consistent architecture/flow/sequence diagrams with Mermaid, rendered inline in chat
description: >-
Use this skill when the user wants to turn a description into a technical diagram — architecture diagrams, flowcharts, sequence diagrams, state machines, ER diagrams, class diagrams, or mind maps. Generates brand-consistent Mermaid that the DesireCore chat renders inline as SVG, styled with the DesireCore 3+2 design tokens and a semantic shape/arrow vocabulary. Use this for diagrams of structure, flow, or relationships — not for photographic or illustrative images.
body: ./SKILL.md
source_hash: 'sha256:1f74e524df631a67'
translated_by: human
market:
icon: >-
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0
24 24" fill="none"><rect x="3" y="3" width="7" height="7" rx="1.5"
stroke="#007AFF" stroke-width="1.5" fill="#007AFF"
fill-opacity="0.12"/><rect x="14" y="3" width="7" height="7" rx="1.5"
stroke="#AF52DE" stroke-width="1.5" fill="#AF52DE" fill-opacity="0.12"/><rect
x="8.5" y="15" width="7" height="6" rx="1.5" stroke="#34C759"
stroke-width="1.5" fill="#34C759" fill-opacity="0.12"/><path d="M6.5 10v2.5h11V10"
stroke="#6e6e73" stroke-width="1.2"/><path d="M12 12.5V15" stroke="#6e6e73"
stroke-width="1.2"/></svg>
short_desc: Draw brand-consistent architecture/flow/sequence diagrams with Mermaid
category: development
maintainer:
name: DesireCore Official
verified: true
channel: latest
---
# tech-diagram Skill
Turn a natural-language description into a brand-consistent technical diagram.
You write **Mermaid** in your reply; the DesireCore chat renders it inline as SVG.
The point of this skill is consistency: every diagram uses the same DesireCore
3+2 palette and the same semantic shape/arrow vocabulary, so diagrams look like
they belong to one product.
## When to Use
Use this skill for diagrams of **structure, flow, or relationships**:
architecture, flowchart, sequence, state machine, ER, class diagram, mind map.
Do NOT use it for photographic or illustrative pictures — route those to an
image-generation skill (e.g. dashscope-image-gen, minimax-image-gen).
## Mandatory Style Rules
These are non-negotiable. Violating them produces off-brand or unrendered diagrams.
1. **Every diagram MUST start with the brand `%%{init}%%` directive.** The chat's
global Mermaid theme is hardcoded to dark; the init directive overrides it per
diagram so output is light and brand-consistent. Use exactly:
```
%%{init: {'theme':'base','themeVariables':{'primaryColor':'#F0F5FF','primaryBorderColor':'#007AFF','primaryTextColor':'#1d1d1f','lineColor':'#6e6e73','fontFamily':'-apple-system,SF Pro Text,Noto Sans SC,sans-serif'}}}%%
```
2. **Color ONLY from the DesireCore 3+2 system via `classDef`.** Never use Mermaid
default colors or any non-3+2 hex. The five classes below are the only palette:
```
classDef agent fill:#F6F3FF,stroke:#AF52DE,color:#1d1d1f
classDef system fill:#F0F5FF,stroke:#007AFF,color:#1d1d1f
classDef biz fill:#F0FDF4,stroke:#34C759,color:#1d1d1f
classDef warn fill:#FFFBF0,stroke:#FF9500,color:#1d1d1f
classDef error fill:#FFF0F0,stroke:#FF3B30,color:#1d1d1f
```
Values come from the DesireCore app codebase (`app/theme/tokens/index.ts` —
green `#34C759` / blue `#007AFF` / purple `#AF52DE` / orange `#FF9500` / red
`#FF3B30` — and `cardBgColors` / `cardBorderColors`; these app paths are not in
this market repo). Pick the class by the same rule as `agent-colors.ts`:
system/generic → blue, knowledge/learning → purple, business/execution → green,
project-management/warning → orange, error → red.
3. **Use the semantic shapes below**, not arbitrary ones.
4. **Quote any node label that contains punctuation, parentheses, or `/`** to avoid
Mermaid parse errors, e.g. `A["Query / Retrieve"]`.
## Semantic Vocabulary
Shape carries meaning (see `references/semantic-vocabulary.md` for the full table):
| Concept | Mermaid shape | classDef |
|---------|---------------|----------|
| Agent / 智能体 | hexagon `id{{...}}` | agent (purple) |
| DesireCore core / system | rounded `id(...)` | system (blue) |
| LLM / model | rounded `id(⚡ ...)` | system (blue) |
| Business / execution node | rect `id[...]` | biz (green) |
| Memory / store | cylinder `id[(...)]` | system (blue) |
| User | stadium `id([...])` | biz (green) |
| Decision / branch | diamond `id{...}` | warn (orange) |
| External service | dashed `subgraph` | — |
## Arrow / Flow Encoding
| Flow | Mermaid edge |
|------|--------------|
| Primary data flow | `-->` solid |
| Memory write / persistence | `-.->` dotted |
| Async event | `-.->|async|` dotted + label |
| Feedback / retry loop | back-edge `-->` to an earlier node |
## Built-in Templates
Ready-to-use Mermaid for DesireCore's own patterns lives in
`references/templates.md`: **Agent architecture**, **Delegate 6 modes**,
**three-tier conversation memory** (active → recent L0/L1 → archive L2), and the
**relation graph** (6 edge types: delegate / mention / co_task / hierarchy /
seek_help / escalation). Adapt them to the user's subject instead of starting
from scratch.
## Output Convention
Emit the diagram directly in your reply inside a fenced code block whose info
string is `mermaid` (open the fence with three backticks immediately followed by
the word mermaid). The chat renders it to SVG automatically; on a syntax error it
falls back to showing the raw code (the `mermaid-fallback` path), so the source
MUST be valid. Keep node labels short — long text breaks the layout.
## Common Mistakes
- ❌ Omitting `%%{init}%%` → the diagram inherits the global dark theme.
- ❌ Hardcoding non-3+2 hex or Tailwind default colors instead of the `classDef`s.
- ❌ Overlong node labels that overflow the layout.
- ❌ Unquoted labels with `()`, `/`, or CJK punctuation → Mermaid parse failure.