docs(web): reflect AccentPalette / all-profile theme + BackInfo bg fix

- spec step-04: AccentPalette + Custom mode note, theme applied across Default
  hive / HKCU / HKU\.DEFAULT.
- spec step-07: BackInfo background #223B47 via BackgroundColor=2243399 (RGB).
- descriptions.json: update 04 accent item; add 07 background item.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

web/data/descriptions.json

@@ -68,7 +68,7 @@
       "start-menu-zakaz-bing-vyhledavani": "DisableSearchBoxSuggestions = 1 in Software\\Policies\\Microsoft\\Windows. Disables web search, Bing suggestions, and online results in Start menu search. Search returns only local apps, files, and settings.",
       "copilot-zakaz-turnoffwindowscopilot-1": "TurnOffWindowsCopilot = 1 in SOFTWARE\\Policies\\Microsoft\\Windows\\WindowsCopilot. Disables the Windows Copilot sidebar entirely. Not suitable for most client environments (data privacy, AI usage policies).",
       "numlock-zapnout-pri-startu-initialkeyboa": "InitialKeyboardIndicators = 2 in Default profile. Ensures NumLock is enabled when Windows starts. Standard expectation for users working with numeric data - prevents confusion on data entry.",
-      "accent-barva-na-titulnich-listech-colorp": "ColorPrevalence = 1 in Personalize key. Shows the X9.cz accent color (#223B47) on window title bars and borders. Gives all windows a consistent branded appearance.",
+      "accent-barva-na-titulnich-listech-colorp": "ColorPrevalence = 1 (in both Themes\\Personalize and DWM) shows the X9.cz accent color (#223B47) on Start, taskbar, window title bars and borders, in Custom mode (dark system + light apps). The exact accent is set via AccentColor (0xFF473B22 ABGR) AND AccentPalette (REG_BINARY, 8 shades) - the palette is required or Win11 drops the custom accent on Start/taskbar and falls back to the default. Applied to the Default hive (new users), the current user (HKCU) and HKU\\.DEFAULT (lock/welcome screen, system context) so the theme is consistent across all profiles.",
       "onedrive-runonce-klic-je-tady-smazat": "REMOVED. The RunOnce key deletion and Explorer namespace CLSID removal were deleted - those registry tweaks prevented a freshly installed OneDrive (e.g. for M365) from launching. OneDrive AppX uninstall in step 01 is intentional; blocking re-launch is not.",
       "explorer-showrecent-0-showfrequent-0": "ShowRecent=0 and ShowFrequent=0 in HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer. Hides Recent files and Frequent folders from Quick Access. Privacy improvement and cleaner File Explorer on fresh deployments.",
       "explorer-fullpath-1-cabinetstate": "FullPath=1 in HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\CabinetState. Displays the full directory path (e.g. C:\\Users\\jan\\Documents\\Projekty) in the File Explorer title bar instead of just the folder name.",
@@ -82,7 +82,8 @@
       "kopirovat-assets-backinfo-do-program-fil": "Copies all files from assets\\Backinfo\\ to C:\\Program Files\\Backinfo\\. Includes BackInfo.exe, BackInfo.ini, and backinfo_W11.ps1. Creates the target directory if it does not exist.",
       "registry-osname-hklm-software-backinfo": "Detects Windows build number and edition, writes OSName string to HKLM\\SOFTWARE\\BackInfo\\OSName (and WOW6432Node). BackInfo.ini references %OSName% to display the correct OS on the wallpaper.",
       "startup-shortcut-backinfo-exe": "Creates a shortcut at C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\StartUp\\BackInfo.lnk pointing to C:\\Program Files\\Backinfo\\BackInfo.exe. Ensures BackInfo starts for every user on logon.",
-      "07-desktop-info-ps1-smazat-nahrazeno": "07-desktop-info.ps1 is superseded by this script. BackInfo.exe is the preferred approach - stable on Win10 and Win11, configurable via INI, already present in assets."
+      "07-desktop-info-ps1-smazat-nahrazeno": "07-desktop-info.ps1 is superseded by this script. BackInfo.exe is the preferred approach - stable on Win10 and Win11, configurable via INI, already present in assets.",
+      "backinfo-pozadi-223b47": "BackInfo.ini sets a solid #223B47 background via BackgroundColor = 2243399. BackInfo reads this value as 0xRRGGBB (RGB order), not a Windows COLORREF (BGR), so 0x223B47 = 2243399; the earlier BGR value 4668194 rendered with red and blue swapped."
     }
   },
   "07-desktop-info": {

web/spec/index.html

@@ -673,8 +673,9 @@
           <tr class="flag-done"><td>Klavesnice: CZ primarni + US sekundarni</td><td>Field fix &ndash; Set-WinUserLanguageList (cs-CZ + en-US) pro aktualniho uzivatele; Preload (<code>1=00000405</code> CZ, <code>2=00000409</code> US) do Default hive i <code>HKU\.DEFAULT</code> (welcome screen + systemove ucty). Aplikuje se vzdy automaticky.</td></tr>
           <tr class="flag-done"><td>System tema (taskbar, Start): Dark</td><td>OK</td></tr>
           <tr class="flag-done"><td>Aplikacni tema: Light</td><td>OK</td></tr>
-          <tr class="flag-done"><td>Accent barva: #223B47 (tmave modroseda)</td><td>AccentColor DWORD = 0xFF473B22 (ABGR)</td></tr>
-          <tr class="flag-done"><td>Accent barva na Start a taskbaru (ColorPrevalence = 1)</td><td>OK</td></tr>
+          <tr class="flag-done"><td>Accent barva: #223B47 (tmave modroseda)</td><td>AccentColor DWORD = 0xFF473B22 (ABGR) + <strong>AccentPalette</strong> (REG_BINARY, 8 odstinu). Bez AccentPalette Win11 vlastni accent na Startu/taskbaru ignoruje a spadne na default &ndash; proto se barvy „neaplikovaly vsude".</td></tr>
+          <tr class="flag-done"><td>Accent barva na Start a taskbaru (ColorPrevalence = 1)</td><td>Themes\Personalize i DWM\ColorPrevalence = 1 (Start/taskbar i zahlavi a ohraniceni oken). Rezim Custom: tmavy system + svetle aplikace.</td></tr>
+          <tr class="flag-done"><td>Motiv aplikovan ve vsech profilech</td><td>Default hive (novi uzivatele) + aktualni HKCU + <code>HKU\.DEFAULT</code> (lock/welcome screen, systemovy kontext).</td></tr>
           <tr class="flag-done"><td>Pruhlednost: vypnuta (EnableTransparency = 0)</td><td>OK</td></tr>
           <tr class="flag-done"><td>Tapeta: jednobarevna #223B47; Wallpaper="" v default hive</td><td>BackInfo prepise tapetu svym BMP; prazdny retezec = solid barva, ne cerna plocha</td></tr>
           <tr class="flag-done"><td>OneDrive RunOnce klic odstranen</td><td>Odstraneni branil reinstalaci pres M365 &ndash; klice smazany ze skriptu</td></tr>
@@ -706,6 +707,7 @@
           <tr class="flag-done"><td>Spustit <code>backinfo_W11.ps1</code> (detekce OS, registry, Startup)</td><td>Logika inlinovana v 07-backinfo.ps1</td></tr>
           <tr class="flag-done"><td>BackInfo.exe v assets/Backinfo/ k dispozici</td><td>Hotovo</td></tr>
           <tr class="flag-done"><td>BackInfo auto-start pri kazdem logonu via Startup shortcut</td><td>Shortcut do ProgramData\StartUp vytvori 07-backinfo.ps1</td></tr>
+          <tr class="flag-done"><td>Pozadi #223B47 (<code>BackgroundColor = 2243399</code>)</td><td>BackInfo bere hodnotu jako 0xRRGGBB (RGB), ne COLORREF/BGR &ndash; tj. <code>0x223B47 = 2243399</code>. Drivejsi BGR hodnota (4668194) renderovala prohozene R/B.</td></tr>
         </table>
         <div class="note">
           <strong>BackInfo.ini konfiguruje:</strong> hostname (velky, centrovan), uzivatelske jmeno,