docs(issue2): add Hy3 integration guides and Evidence Board demo

.gitignore

@@ -8,3 +8,6 @@
 Thumbs.db
 __pycache__/
 *.pyc
+.env
+.env.*
+!.env.example

issue2/README.en.md

@@ -0,0 +1,23 @@
+# Hy3 Integrations and Evidence Board
+
+This directory implements [Issue #2](https://github.com/Tencent-Hunyuan/Hy3/issues/2):
+
+- [Five end-user integration guides](integrations/README.en.md)
+- [Hy3 Evidence Board](demo/README.en.md), a small web app that keeps API keys on the server and uses Hy3 tool calling to search a local knowledge base before writing an evidence-backed report
+
+![Eight-second offline Evidence Board walkthrough](assets/evidence-board-demo.gif)
+
+> 中文：[README.md](README.md)
+
+## Verification boundary
+
+Configuration fields and commands were checked against each product's official documentation. Offline mode, tests, and the web UI run without an API key. A real Hy3 request requires either an OpenRouter key or a reachable self-hosted OpenAI-compatible Hy3 endpoint. Offline output is visibly marked and never presented as model output.
+
+## Layout
+
+```text
+issue2/
+├── integrations/       # Bilingual integration guides
+├── demo/               # Standalone-ready showcase source
+└── assets/             # Locally captured screenshots and demo media
+```

issue2/README.md

@@ -0,0 +1,23 @@
+# Hy3 主流工具集成与 Evidence Board
+
+本目录对应 [Issue #2](https://github.com/Tencent-Hunyuan/Hy3/issues/2)，包含：
+
+- [5 个主流工具的 Hy3 接入指南](integrations/README.md)
+- [Hy3 Evidence Board 小作品](demo/README.md)：一个以服务端保管密钥、用 Hy3 工具调用检索本地资料并生成带证据报告的 Web 应用
+
+![Evidence Board 8 秒离线交互演示](assets/evidence-board-demo.gif)
+
+> English: [README.en.md](README.en.md)
+
+## 验证边界
+
+文档中的字段和命令已按各工具官方文档核对；仓库内的离线模式、单元测试和 Web 页面可以在没有 API Key 的环境运行。真实 Hy3 请求需要自行提供 OpenRouter Key 或可访问的自建 Hy3 OpenAI 兼容端点。离线模式会在界面显著标注，不会冒充真实模型输出。
+
+## 目录
+
+```text
+issue2/
+├── integrations/       # 中英双语接入指南
+├── demo/               # 可独立发布的小作品源码
+└── assets/             # 本地运行所得截图与演示素材
+```

issue2/demo/.env.example

@@ -0,0 +1,9 @@
+# Choose: openrouter or selfhost
+HY3_PROVIDER=openrouter
+HY3_BASE_URL=https://openrouter.ai/api/v1
+HY3_MODEL=tencent/hy3
+HY3_API_KEY=replace-me
+HY3_REASONING_EFFORT=low
+
+# For a clearly labeled offline UI/retrieval demo:
+# HY3_DEMO_MODE=1

issue2/demo/LICENSE

@@ -0,0 +1,210 @@
+Tencent is pleased to support the open source community by making Tencent Hy3 available.
+
+Copyright (C) 2026 Tencent.  All rights reserved.
+
+Tencent Hy3 is licensed under the Apache-2.0.
+
+
+Terms of the Apache-2.0:
+--------------------------------------------------------------------
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

issue2/demo/README.en.md

@@ -0,0 +1,64 @@
+# Hy3 Evidence Board
+
+> 中文：[README.md](README.md)
+
+Evidence Board is a small Hy3 agent application. The model must call `search_knowledge_base`; the server performs a read-only search and returns evidence for a cited final report.
+
+![Eight-second offline walkthrough](../assets/evidence-board-demo.gif)
+
+## Hy3 capabilities
+
+- OpenAI-compatible tool calling
+- A grounded multi-turn agent loop
+- `no_think / low / high` reasoning mapping
+- Long-form synthesis with source IDs
+
+## Security
+
+- The API key stays in server environment variables and never reaches browser storage.
+- The only tool is read-only local search; the model cannot run a shell or read arbitrary files.
+- Tool calls are capped at three rounds, requests at 32 KiB, and questions at 10–500 characters.
+- Offline `DemoProvider` output is clearly labeled and never impersonates Hy3.
+
+## Run
+
+Offline:
+
+```bash
+cd issue2/demo
+HY3_DEMO_MODE=1 python3 server.py
+```
+
+Open <http://127.0.0.1:8765>.
+
+OpenRouter live mode:
+
+```bash
+export HY3_PROVIDER=openrouter
+export HY3_API_KEY='sk-or-v1-...'
+export HY3_MODEL=tencent/hy3
+python3 server.py
+```
+
+Self-hosted mode:
+
+```bash
+export HY3_PROVIDER=selfhost
+export HY3_BASE_URL=http://127.0.0.1:8000/v1
+export HY3_API_KEY=EMPTY
+export HY3_MODEL=hy3
+python3 server.py
+```
+
+Enable Hy3's appropriate tool-call parser on the server.
+
+## Verify
+
+```bash
+python3 -m unittest discover -s tests -v
+python3 server.py --check
+```
+
+`--check` is deterministic, ignores API credentials, and sends no network request.
+
+This directory has no dependency on a Hy3 repository package and is ready to copy into a standalone repository. Remote publication and a live demo video remain separate authorized actions.