Publish verified Ubuntu desktop preview setup and evidence

docs/LINUX-DESKTOP.md

@@ -21,8 +21,8 @@ Immutable source: `/home/karl/.cache/searchi-validation/linux-desktop-a6bf091`.
 
 This proves native compilation and local loader dependency resolution, not
 native UI interaction, runtime resource discovery, clean-machine deployment,
-installer packaging, Wayland shortcut operation or broad Linux compatibility.
-No Linux desktop download is published. Native graphical checks remain open.
+Wayland shortcut operation or broad Linux compatibility.
+Native graphical checks remain open.
 
 ## Relocated startup
 
@@ -54,5 +54,24 @@ and was never published. A fresh source snapshot now uses the existing verified
 resource stager, yielding 33 resource files instead of copying a CMake build tree.
 Linux staged `.so` files are excluded from Git like Windows DLLs.
 
-Final package compression, extracted payload/ABI checks and startup validation
-are in progress. No desktop Debian download is published yet.
+The final Debian preview is published with v0.1.3:
+[download](https://tea.karlcom.de/karl/searchi/releases/download/v0.1.3/searchi_0.1.3_amd64.deb)
+and [checksum](https://tea.karlcom.de/karl/searchi/releases/download/v0.1.3/LINUX-DESKTOP-SHA256SUMS-0.1.3.txt).
+It is 103871912 bytes, SHA-256
+`2eb4252a16190353e7ad3074951d0c79ae03124b01bd3b048a72b6ad0efc0adb`.
+Public unauthenticated download bytes were verified. Only the desktop executable
+was stripped; verified Google and extraction worker resources were preserved.
+XZ level-nine compression fits the existing upload limit without server changes.
+
+Actual ELF requirements are GLIBC 2.39 and GLIBCXX 3.4.32; Debian dependencies
+declare `libc6 (>= 2.39)` and `libstdc++6 (>= 13.2)` alongside GTK/WebKit.
+This is an Ubuntu 24.04 x86-64 preview, not a general older-Linux package.
+Canonical resource staging used immutable source `d0b8dbf`; application source
+remains `a6bf091`. Later Rust fixes are not included in this package.
+
+The final compressed package was extracted and started under an owned Xvfb/DBus
+session using the CPU/software flags above. Its bundled genuine Google query
+worker started with one CPU thread and the desktop remained alive afterward.
+Raw report: `.searchi/qa/linux-deb-startup-013-stripped.json`.
+This checks packaged startup and resource discovery, not interactive rendering,
+system installation, GPU operation or clean-machine compatibility.