feat: #78 Excalidraw finitions + #67 push + #68 health-detailed + #77 desktop jumplist

#78 Excalidraw — finitions B5/C8/F2/F3
- backend/indexer.py: port Python pur de lz-string decompressFromBase64 (bitsPerChar=6, resetValue=32) validé contre 4 fixtures JS truth (texte accentué, edge cases) — remplace le stub base64 non-fonctionnel
- B5 indexation: .excalidraw.md (format plugin Obsidian) maintenant décompressé côté Python → texte indexé pour recherche TF-IDF
- 7 nouveaux tests B5 dans tests/test_excalidraw.py (13/13 total)
- F2: excalidraw-viewer.test.mjs enregistré dans CI (lint job)
- F3: tests/e2e/excalidraw.spec.js (9 specs — ouverture .excalidraw/.excalidraw.md, création via modale/menu contextuel, toolbar, thème, pop-out, recherche)
- Fixtures test_vault/diagram.excalidraw + diagram.excalidraw.md

#67 Push notifications (Web Push API + VAPID)
- backend/push.py: router + VAPID keys + send_push_notification (pywebpush>=2.3.0)
- frontend/js/push.js: subscription UI + service worker integration
- tests/test_push.py: 10 tests (subscribe/list/unsubscribe/vapid key)
- requirements.txt + sw.js + locales push strings

#68 Health check enrichi
- backend/main.py: GET /api/health/detailed (admin) — memory/cpu/disk/backups/index/SSE connections
- backend/indexer.py: _last_full_index_ts tracking
- tests/conftest.py: admin_client fixture
- tests/test_api_main.py: 3 nouveaux tests health detailed

#77 Desktop jumplist
- desktop/src/jumplist.rs: Windows jumplist integration
- Cargo.toml/lock + capabilities + main.rs
- frontend/js/desktop.js: Tauri bridge (isTauriEnv, invoke, getSystemTheme, syncSystemTheme, shouldShowWizard, crash banner)
- tests/frontend/desktop.test.mjs: 21 tests JSDOM (détection, invoke degradation, theme gating, wizard, crash banner)
- tests/frontend/unit.test.mjs: desktop.js whitelisted (standalone global reader)

# Frontend & CI
- frontend/sw.js: réécriture complète (precache + push event handlers + offline)
- frontend/index.html: section push dans settings + about repositionné
- frontend/js/app.js: initDesktopIntegration + initPush
- CI .gitea/workflows/ci.yml: excalidraw-viewer.test.mjs ajouté au lint job

All checks: ruff clean, 552 backend tests pass, 9 frontend unit, 5 excalidraw-viewer, 21 desktop, 9 pane-manager, validate-imports 33 modules.

desktop/src/jumplist.rs

@@ -0,0 +1,178 @@
+//! Windows Taskbar Jump List — recent vaults.
+//!
+//! Populates the taskbar jump list with the configured vaults so the user can
+//! jump straight into a vault from the Windows taskbar / Start menu.
+//!
+//! Best-effort: every step is fallible and logged, never panics, and a failure
+//! simply leaves the jump list at its OS-managed default state.
+
+use log::{info, warn};
+
+#[cfg(target_os = "windows")]
+mod imp {
+    use super::*;
+    use std::os::windows::ffi::OsStrExt;
+    use windows::core::{Interface, HSTRING, PCWSTR};
+    use windows::Win32::Foundation::PROPERTYKEY;
+    use windows::Win32::System::Com::{
+        CoCreateInstance, CoInitializeEx, CLSCTX_INPROC_SERVER, COINIT_APARTMENTTHREADED,
+    };
+    use windows::Win32::System::Com::StructuredStorage::PROPVARIANT;
+    use windows::Win32::System::Variant::VT_LPWSTR;
+    use windows::Win32::UI::Shell::{
+        ICustomDestinationList, IShellLinkW, SetCurrentProcessExplicitAppUserModelID,
+        DestinationList, EnumerableObjectCollection, ShellLink,
+    };
+    use windows::Win32::UI::Shell::Common::IObjectCollection;
+    use windows::Win32::UI::Shell::PropertiesSystem::IPropertyStore;
+
+    const APP_ID: &str = "com.obsigate.desktop";
+
+    // PKEY_Title (System.Title): {F29F85E0-4FF9-1068-AB91-08002B27B3D9}, pid 2
+    const PKEY_TITLE: PROPERTYKEY = PROPERTYKEY {
+        fmtid: windows::core::GUID::from_u128(0xF29F85E0_4FF9_1068_AB91_08002B27B3D9),
+        pid: 2,
+    };
+
+    fn wide_null_terminated(s: &str) -> Vec<u16> {
+        std::ffi::OsStr::new(s).encode_wide().chain(std::iter::once(0)).collect()
+    }
+
+    /// Set the jump-list display title via the shell link's property store.
+    fn set_link_title(link: &IShellLinkW, title: &str) -> windows::core::Result<()> {
+        let store: IPropertyStore = link.cast()?;
+        let mut wide = wide_null_terminated(title);
+        let mut pv: PROPVARIANT = unsafe { std::mem::zeroed() };
+        unsafe {
+            let inner = &mut *pv.Anonymous.Anonymous;
+            inner.vt = VT_LPWSTR;
+            inner.Anonymous.pwszVal = windows::core::PWSTR(wide.as_mut_ptr());
+            store.SetValue(&PKEY_TITLE, &pv)?;
+            store.Commit()?;
+        }
+        Ok(())
+    }
+
+    /// Build one shell link for a vault. `arg` is the command-line argument the
+    /// app expects to open that vault (see file associations / single-instance).
+    fn build_shell_link(name: &str, arg: &str) -> windows::core::Result<IShellLinkW> {
+        let link: IShellLinkW =
+            unsafe { CoCreateInstance(&ShellLink, None, CLSCTX_INPROC_SERVER)? };
+
+        let exe = std::env::current_exe()
+            .map_err(|e| windows::core::Error::from(std::io::Error::other(e)))?;
+        let exe_wide = exe.as_os_str().encode_wide().chain(std::iter::once(0)).collect::<Vec<u16>>();
+
+        unsafe {
+            link.SetPath(PCWSTR(exe_wide.as_ptr()))?;
+            if !arg.is_empty() {
+                link.SetArguments(&HSTRING::from(arg))?;
+            }
+            link.SetDescription(&HSTRING::from(name))?;
+        }
+        // Title (display name) is best-effort — a missing title only means the
+        // jump-list entry falls back to the executable name.
+        let _ = set_link_title(&link, name);
+        Ok(link)
+    }
+
+    /// Populate the jump list with the given (name, arg) vault entries.
+    pub fn update_jumplist(vaults: &[(String, String)]) {
+        // COM must be initialised on this thread.
+        let _ = unsafe { CoInitializeEx(None, COINIT_APARTMENTTHREADED) };
+
+        let result = (|| -> windows::core::Result<()> {
+            unsafe {
+                SetCurrentProcessExplicitAppUserModelID(PCWSTR(wide_null_terminated(APP_ID).as_ptr()))?;
+            }
+
+            let list: ICustomDestinationList =
+                unsafe { CoCreateInstance(&DestinationList, None, CLSCTX_INPROC_SERVER)? };
+
+            let mut min_slots = 0u32;
+            unsafe {
+                list.BeginList::<windows::core::IUnknown>(&mut min_slots)?;
+            }
+
+            // "Vaults" category
+            let collection: IObjectCollection = unsafe {
+                CoCreateInstance(&EnumerableObjectCollection, None, CLSCTX_INPROC_SERVER)?
+            };
+            for (name, arg) in vaults {
+                match build_shell_link(name, arg) {
+                    Ok(link) => unsafe {
+                        let _ = collection.AddObject(&link);
+                    },
+                    Err(e) => warn!("jumplist: failed to build link for {}: {}", name, e),
+                }
+            }
+            unsafe {
+                let array: windows::Win32::UI::Shell::Common::IObjectArray = collection.cast()?;
+                list.AppendCategory(&HSTRING::from("Vaults"), &array)?;
+                list.CommitList()?;
+            }
+            Ok(())
+        })();
+
+        match result {
+            Ok(()) => info!("jumplist updated with {} vaults", vaults.len()),
+            Err(e) => warn!("jumplist update failed (non-fatal): {}", e),
+        }
+    }
+}
+
+#[cfg(not(target_os = "windows"))]
+mod imp {
+    use super::*;
+
+    /// No-op on non-Windows platforms.
+    pub fn update_jumplist(_vaults: &[(String, String)]) {
+        info!("jumplist is Windows-only — skipped");
+    }
+}
+
+/// Public entry point: update the Windows jump list from the configured vaults.
+/// Each entry maps a vault name to the CLI argument the app accepts to open it.
+pub fn update_jumplist(vaults: &[(String, String)]) {
+    imp::update_jumplist(vaults);
+}
+
+/// Build the (name, arg) pairs for the jump list from vault paths.
+/// Pure helper so the mapping is unit-testable on every platform.
+pub fn build_vault_args(vaults: &[crate::VaultConfig]) -> Vec<(String, String)> {
+    vaults
+        .iter()
+        .map(|v| (v.name.clone(), format!("--vault={}", v.path)))
+        .collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::build_vault_args;
+    use crate::VaultConfig;
+
+    fn v(name: &str, path: &str) -> VaultConfig {
+        VaultConfig { name: name.to_string(), path: path.to_string() }
+    }
+
+    #[test]
+    fn test_build_vault_args_empty() {
+        assert!(build_vault_args(&[]).is_empty());
+    }
+
+    #[test]
+    fn test_build_vault_args_maps_name_and_path() {
+        let vaults = vec![v("Perso", "C:\\vaults\\perso"), v("IT", "/home/bruno/IT")];
+        let args = build_vault_args(&vaults);
+        assert_eq!(args.len(), 2);
+        assert_eq!(args[0], ("Perso".to_string(), "--vault=C:\\vaults\\perso".to_string()));
+        assert_eq!(args[1], ("IT".to_string(), "--vault=/home/bruno/IT".to_string()));
+    }
+
+    #[test]
+    fn test_build_vault_args_preserves_order() {
+        let vaults = vec![v("a", "/a"), v("b", "/b"), v("c", "/c")];
+        let args = build_vault_args(&vaults);
+        assert_eq!(args.iter().map(|(n, _)| n.as_str()).collect::<Vec<_>>(), vec!["a", "b", "c"]);
+    }
+}

desktop/src/main.rs

@@ -5,6 +5,8 @@
 
 #![windows_subsystem = "windows"]
 
+mod jumplist;
+
 use log::{error, info, warn};
 use serde::{Deserialize, Serialize};
 use std::fs::{self, OpenOptions};
@@ -579,6 +581,10 @@ fn main() {
             // Build native menu bar (File / Edit / Help)
             let _ = build_native_menu(app);
 
+            // Windows taskbar jump list — recent vaults (best-effort).
+            let jumplist_vaults = jumplist::build_vault_args(&config.vaults);
+            jumplist::update_jumplist(&jumplist_vaults);
+
             // Restore window position/size
             if let Some(window) = app.get_webview_window("main") {
                 if let (Some(x), Some(y)) = (config.window_x, config.window_y) {
@@ -872,8 +878,14 @@ fn build_tray_menu(app: &tauri::App) -> Result<(), Box<dyn std::error::Error>> {
 mod tests {
     use super::*;
     use std::fs;
+    use std::sync::Mutex;
     use tempfile::TempDir;
 
+    /// Serializes the `pick_free_port` tests: they bind real TCP ports, so
+    /// running them in parallel makes them clobber each other's port.
+    static PORT_TEST_LOCK: Mutex<()> = Mutex::new(());
+
+
     /// Helper: write config to a temp dir and read it back
     fn roundtrip_config(config: &AppConfig) -> AppConfig {
         let tmp = TempDir::new().unwrap();
@@ -973,6 +985,7 @@ mod tests {
 
     #[test]
     fn test_pick_free_port_is_free() {
+        let _guard = PORT_TEST_LOCK.lock().unwrap();
         let port = pick_free_port();
         assert!((DEFAULT_BACKEND_PORT..DEFAULT_BACKEND_PORT + PORT_SCAN_ATTEMPTS).contains(&port));
         assert!(TcpListener::bind(("127.0.0.1", port)).is_ok());
@@ -980,6 +993,7 @@ mod tests {
 
     #[test]
     fn test_pick_free_port_skips_busy_port() {
+        let _guard = PORT_TEST_LOCK.lock().unwrap();
         let blocker = match TcpListener::bind(("127.0.0.1", DEFAULT_BACKEND_PORT)) {
             Ok(l) => l,
             Err(_) => return, // default port already busy on this machine — skip