docs(repo): fold SUPPORT.md into CONTRIBUTING.md and BRAND.md into READMEs

Author: DevBot

BRAND.md

@@ -84,3 +84,10 @@ For release work, also run the release gates listed in
 Release work must follow `docs/governance/PROJECT_WORKFLOW.md`. Do not bump
 packages until implementation gates pass. Do not merge `dev` to `main` until
 `dev` CI is green. Do not tag until `main` CI is green.
+
+## Support
+
+Use [GitHub Discussions](https://github.com/open-element/openelement/discussions)
+for usage questions, design discussion, and help choosing an API. Use an issue
+only for a reproducible bug, a concrete documentation defect, or an agreed
+feature proposal.

CONTRIBUTING.md

@@ -95,6 +95,14 @@ See [CONTRIBUTING.md](./CONTRIBUTING.md). Architecture decisions live in
 [docs/adr/](./docs/adr/); historical release and audit records remain available
 as evidence, not current product documentation.
 
+## Brand
+
+The canonical compact mark is the dark `<open/>` SVG in
+[`www/public/favicon.svg`](./www/public/favicon.svg)
+(`open-favicon-inverted.svg` is the maintained light-surface variant). Brand
+SVGs are distributed under the repository MIT license; forks may reuse them
+with attribution but should not imply endorsement.
+
 ## License
 
 MIT

README.md

@@ -80,6 +80,12 @@ deno task dev
 参见 [CONTRIBUTING.md](./CONTRIBUTING.md)。架构决策在 [docs/adr/](./docs/adr/)；
 历史 release 与 audit 记录保留为证据，不再作为当前产品文档。
 
+## 品牌
+
+规范的紧凑标志是 [`www/public/favicon.svg`](./www/public/favicon.svg) 中的深色
+`<open/>` SVG（`open-favicon-inverted.svg` 是浅色背景的维护变体）。品牌 SVG
+以仓库 MIT 许可证分发；fork 可以署名使用，但不应暗示获得上游背书。
+
 ## 许可
 
 MIT

README.zh.md

@@ -65,7 +65,6 @@ const failures: Failure[] = [];
 const requiredCommunityFiles = [
   'SECURITY.md',
   'CODE_OF_CONDUCT.md',
-  'SUPPORT.md',
   'MAINTAINERS.md',
 ];