refactor(docs): 核心仓文档与介绍站展示名改名为 HologramAgent

只改仓库内文件的纯展示品牌名与已随批 2 落地的安装路径；运行时契约、仓库 URL、
域名、环境变量、可执行名、插件名一律不动。

一、纯展示名（HomeAgent → HologramAgent，共 44 处 / 18 个文件）
- README.md 4、README_EN.md 4（标题、client 变体说明、Windows 安装包名、AGPL 段）
- docs/ 8 个文件 14 处（git-branching 1、ci-cd-runbook 1、commondev-design 3、
  commondev-agent-runtime-design 4、deploy-runbook 1、legacy-issues 1、
  prod-migration-checklist 1、triple-extract-attention 2）
- assets/docs/ 6 个文件 14 处（zh/en 的 OVERVIEW 2+2、ARCHITECTURE 2+2、
  PLUGIN_DEV 3+3）
- assets/branding/mascot-xiaozhai-guide.md 2 处（身份行、标志名）
- site/index.html 6 处（title、meta description、og:title、logo alt、页头字、
  插件卡片文案 "HologramAgent 接入 AgentMail"）

二、安装路径对齐批 2 产物（共 10 处）
- /usr/lib/homeagent → /usr/lib/hologram（7 处：README 2、README_EN 2、
  multimodal-space 3）
- /usr/share/doc/homeagent → /usr/share/doc/hologramagent（3 处：README 1、
  README_EN 1、multimodal-space 1；注意 Doc 路径带 agent 后缀）
- site/index.html 的 19 处 HomeAgent 里，13 处是 github.com/JianFeeeee/HomeAgent
  仓库 URL，属红线整串保留；只改 URL 之外的展示文案（其余 13 处零改动）

三、明确不改（红线 / 一致性冲突）
- site/index.html 的 23 个 github.com/JianFeeeee/homeagentsdk 外链（21 条
  example + 2 条纯仓库），SDK 仓改名属批 4-b，一个未动
- 核心仓仓库 URL、sdk./introduce.homeagent.jianfgit.xyz 域名、HOMEAGENT_ 前缀、
  homed/waiter/hmapdev、.hmap、homeagent-mail-bridge 等插件名、third_party/、
  internal/ 与 cmd/ 全部零改动
- ~/.homeagent 路径本批保持原样：cmd/waiter/main.go:109、daemon.go:290 硬编码
  仍为 .homeagent，全仓无 .hologram 命中；照规格改文档会指向程序不用的目录，
  需与代码侧那条线一起改（遗留项，已单独上报）

判据：文档区展示名残留归零（44 文件）、红线计数与 base e3584bb 逐项相同、
三条变异均被咬住且还原后复绿。

README_EN.md

@@ -1,6 +1,6 @@
 > ⚠️ **AI-Assisted Programming Notice**: Parts of this project's code, documentation, and commit history were generated or modified with AI assistance. Key changes have been human-reviewed, but please evaluate and verify before use.
 
-# HomeAgent
+# HologramAgent
 
 > **中文**: [README.md](./README.md)
 
@@ -373,10 +373,10 @@ semantic memory; the blob is only a cache that capacity GC may evict.
 | --- | --- | --- |
 | **full** | homed + waiter + desktop GUI + systemd unit | Single-machine, everything |
 | **server** | homed + waiter + systemd unit | Servers (no desktop environment) |
-| **client** | waiter + desktop GUI | Connecting to a remote HomeAgent |
+| **client** | waiter + desktop GUI | Connecting to a remote HologramAgent |
 
 - Linux: `.deb` (amd64/arm64), `.rpm` (x86_64), `.tar.gz`
-- Windows: `HomeAgent_v1.2.0_{Full,Server,Client}_win64.exe` (NSIS installer, includes the AGPL license page). Since v1.2.0 `homed` no longer supports native Windows (it relies on fd inheritance and in-segment offset dereferencing), so the installer bootstraps **WSL2** and installs the Linux packages inside the distribution the same way a Linux host would.
+- Windows: `HologramAgent_v1.2.0_{Full,Server,Client}_win64.exe` (NSIS installer, includes the AGPL license page). Since v1.2.0 `homed` no longer supports native Windows (it relies on fd inheritance and in-segment offset dereferencing), so the installer bootstraps **WSL2** and installs the Linux packages inside the distribution the same way a Linux host would.
 - Portable: `homeagent-bin-<os>_<arch>.tar.gz` (homed/waiter/initconfig)
 - Verification: `SHA256SUMS`
 
@@ -404,7 +404,7 @@ This project is released under the **GNU Affero General Public License, version
 
 This is the strongest copyleft in the GPL family: besides shipping the complete corresponding
 source when you distribute the software, **you must also offer the source to users who interact
-with it over a network** (§13, Remote Network Interaction). Anyone running a modified HomeAgent
+with it over a network** (§13, Remote Network Interaction). Anyone running a modified HologramAgent
 as a network service therefore has to make the modified source available to that service's users.
 
 Plugins are **statically linked** against this project through the public
@@ -425,11 +425,11 @@ license is the linked SDK code itself, and that code is MIT.
 
 | Component | License | Location |
 | --- | --- | --- |
-| Chinese-CLIP ViT-B/16 (ONNX artifacts) | Apache-2.0 | `/usr/lib/homeagent/models/chinese-clip-vit-b16-onnx/` |
-| ONNX Runtime (`libonnxruntime.so`) | MIT | `/usr/lib/homeagent/onnxruntime/` |
+| Chinese-CLIP ViT-B/16 (ONNX artifacts) | Apache-2.0 | `/usr/lib/hologram/models/chinese-clip-vit-b16-onnx/` |
+| ONNX Runtime (`libonnxruntime.so`) | MIT | `/usr/lib/hologram/onnxruntime/` |
 | jieba dictionary (embedded in the binary) | MIT | `internal/memory/jiebadict/` |
 | Go dependencies (go-sqlite3, gojieba, bubbletea, …) | MIT / BSD-3 / Apache-2.0 | permissive, AGPL-3.0-compatible |
 
 These components keep their own licenses and are not relicensed by this project. Full texts are
-shipped in `/usr/share/doc/homeagent/licenses/`, and the package metadata declares this package
+shipped in `/usr/share/doc/hologramagent/licenses/`, and the package metadata declares this package
 as `AGPL-3.0-only`.