diff --git a/apps/desktop/src-tauri/build.rs b/apps/desktop/src-tauri/build.rs
index 2f2429d..0b99e58 100644
--- a/apps/desktop/src-tauri/build.rs
+++ b/apps/desktop/src-tauri/build.rs
@@ -6,5 +6,20 @@ fn main() {
             println!("cargo:rustc-env={key}={val}");
         }
     }
+
+    // On Linux, apply a version script to hide statically linked ICU/HarfBuzz/
+    // FreeType/Fontconfig symbols from the dynamic symbol table.  This prevents
+    // symbol collisions with the system copies loaded by WebKit2GTK (segfault).
+    // See: https://github.com/delibae/claude-prism/issues/100
+    #[cfg(target_os = "linux")]
+    {
+        let manifest_dir = std::env::var("CARGO_MANIFEST_DIR").expect("CARGO_MANIFEST_DIR");
+        println!(
+            "cargo:rustc-link-arg=-Wl,--version-script={}/symbols.map",
+            manifest_dir
+        );
+        println!("cargo:rerun-if-changed=symbols.map");
+    }
+
     tauri_build::build()
 }
diff --git a/apps/desktop/src-tauri/capabilities/default.json b/apps/desktop/src-tauri/capabilities/default.json
index 55457d0..4b93ce6 100644
--- a/apps/desktop/src-tauri/capabilities/default.json
+++ b/apps/desktop/src-tauri/capabilities/default.json
@@ -21,28 +21,61 @@
     "dialog:allow-message",
     "dialog:allow-ask",
     "fs:default",
-    "fs:allow-read",
-    "fs:allow-write",
-    "fs:allow-exists",
-    "fs:allow-mkdir",
-    "fs:allow-remove",
-    "fs:allow-rename",
-    "fs:allow-copy-file",
-    "fs:allow-read-dir",
-    "fs:allow-read-text-file",
-    "fs:allow-write-text-file",
-    "fs:allow-read-file",
-    "fs:allow-write-file",
-    "fs:allow-stat",
-    "fs:allow-watch",
     {
-      "identifier": "fs:scope",
-      "allow": [
-        { "path": "$HOME/**" },
-        { "path": "$DOCUMENT/**" },
-        { "path": "$DESKTOP/**" },
-        { "path": "$TEMP/**" }
-      ]
+      "identifier": "fs:allow-read",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-write",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-exists",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-mkdir",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-remove",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-rename",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-copy-file",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-read-dir",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-read-text-file",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-write-text-file",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-read-file",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-write-file",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-stat",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
+    },
+    {
+      "identifier": "fs:allow-watch",
+      "allow": [{ "path": "$HOME/**" }, { "path": "$DOCUMENT/**" }, { "path": "$DESKTOP/**" }, { "path": "$TEMP/**" }]
     },
     "shell:default",
     "shell:allow-open",
diff --git a/apps/desktop/src-tauri/symbols.map b/apps/desktop/src-tauri/symbols.map
new file mode 100644
index 0000000..32a364c
--- /dev/null
+++ b/apps/desktop/src-tauri/symbols.map
@@ -0,0 +1,50 @@
+/* Version script to hide statically linked library symbols.
+ *
+ * Prevents symbol collisions between our statically linked
+ * ICU/HarfBuzz/FreeType/Fontconfig (from vcpkg, used by Tectonic)
+ * and the dynamically linked versions used by WebKit2GTK at runtime.
+ *
+ * Without this, the ELF dynamic linker resolves WebKit2GTK's ICU
+ * calls to our static symbols (different version), causing a segfault
+ * at startup.  Fixes #100; preserves #91 fix (static ICU = no
+ * libicuuc.so.70 not-found error on newer distros).
+ */
+{
+  local:
+    /* ICU4C */
+    u_*;
+    ucnv_*;
+    ucol_*;
+    ures_*;
+    udata_*;
+    ucal_*;
+    udat_*;
+    unum_*;
+    uset_*;
+    ustr_*;
+    ubidi_*;
+    ubrk_*;
+    uidna_*;
+    uloc_*;
+    unorm_*;
+    unorm2_*;
+    utrans_*;
+    icu_*;
+    UCNV_*;
+
+    /* HarfBuzz */
+    hb_*;
+
+    /* FreeType */
+    FT_*;
+    ft_*;
+
+    /* Fontconfig */
+    Fc*;
+
+    /* Graphite2 */
+    gr_*;
+
+    /* libpng (often pulled in by FreeType) */
+    png_*;
+};
diff --git a/apps/desktop/src/components/claude-chat/markdown-renderer.tsx b/apps/desktop/src/components/claude-chat/markdown-renderer.tsx
index bc4d83b..4c08078 100644
--- a/apps/desktop/src/components/claude-chat/markdown-renderer.tsx
+++ b/apps/desktop/src/components/claude-chat/markdown-renderer.tsx
@@ -220,7 +220,7 @@ const CodeBlock: FC<{ language: string; code: string }> = ({
             <span className="text-xs">
               Run in{" "}
               <code className="rounded bg-muted px-1 text-xs">
-                {projectRoot?.split("/").pop()}/
+                {projectRoot?.split(/[/\\]/).pop()}/
               </code>
             </span>
           </div>
diff --git a/apps/desktop/src/components/project-wizard.tsx b/apps/desktop/src/components/project-wizard.tsx
index f583381..e318349 100644
--- a/apps/desktop/src/components/project-wizard.tsx
+++ b/apps/desktop/src/components/project-wizard.tsx
@@ -3,6 +3,7 @@ import { open } from "@tauri-apps/plugin-dialog";
 import { mkdir, writeTextFile } from "@tauri-apps/plugin-fs";
 import { getCurrentWebview } from "@tauri-apps/api/webview";
 import { homeDir } from "@tauri-apps/api/path";
+import { toast } from "sonner";
 import {
   ArrowLeftIcon,
   FolderOpenIcon,
@@ -133,11 +134,11 @@ function ScratchForm({ onBack }: { onBack: () => void }) {
     } else {
       homeDir()
         .then((home) => join(home, "Documents", "ClaudePrism"))
-        .then((dir) => {
-          mkdir(dir, { recursive: true }).catch(() => {});
+        .then(async (dir) => {
+          await mkdir(dir, { recursive: true }).catch(() => {});
           setProjectFolder(dir);
         })
-        .catch(() => {});
+        .catch((err) => console.warn("Failed to resolve default project folder:", err));
     }
   }, []); // eslint-disable-line react-hooks/exhaustive-deps
 
@@ -234,7 +235,7 @@ function ScratchForm({ onBack }: { onBack: () => void }) {
 
     try {
       const projectPath = await join(projectFolder, projectName.trim());
-      await mkdir(projectPath, { recursive: true }).catch(() => {});
+      await mkdir(projectPath, { recursive: true });
 
       // Create CLAUDE.md for Claude Code context
       const claudeMdPath = await join(projectPath, "CLAUDE.md");
@@ -259,12 +260,12 @@ function ScratchForm({ onBack }: { onBack: () => void }) {
 
       if (attachments.length > 0) {
         const attachmentsDir = await join(projectPath, "attachments");
-        await mkdir(attachmentsDir, { recursive: true }).catch(() => {});
+        await mkdir(attachmentsDir, { recursive: true });
       }
 
       if (purpose.trim()) {
         const attachmentNames = attachments
-          .map((p) => p.split("/").pop())
+          .map((p) => p.split(/[/\\]/).pop())
           .filter(Boolean);
         const attachmentSection =
           attachmentNames.length > 0
@@ -303,6 +304,9 @@ function ScratchForm({ onBack }: { onBack: () => void }) {
       }
     } catch (err) {
       console.error("Failed to create project:", err);
+      toast.error("Failed to create project", {
+        description: err instanceof Error ? err.message : String(err),
+      });
     } finally {
       setIsCreating(false);
     }
@@ -383,7 +387,7 @@ function ScratchForm({ onBack }: { onBack: () => void }) {
                         >
                           <PaperclipIcon className="size-3 shrink-0 text-muted-foreground/70" />
                           <span className="max-w-[140px] truncate text-foreground/80">
-                            {path.split("/").pop()}
+                            {path.split(/[/\\]/).pop()}
                           </span>
                           <button
                             onClick={() => handleRemoveAttachment(path)}
@@ -447,7 +451,7 @@ function ScratchForm({ onBack }: { onBack: () => void }) {
                 </div>
                 {!locationOpen && projectFolder && projectName.trim() && (
                   <span className="min-w-0 max-w-[180px] truncate rounded-md bg-muted/40 px-2 py-0.5 font-mono text-[11px] text-muted-foreground/60">
-                    .../{projectFolder.split("/").pop()}/{projectName.trim()}
+                    .../{projectFolder.split(/[/\\]/).pop()}/{projectName.trim()}
                   </span>
                 )}
                 <ChevronDownIcon
diff --git a/apps/desktop/src/components/template-gallery/template-preview.tsx b/apps/desktop/src/components/template-gallery/template-preview.tsx
index 468fba1..0eff714 100644
--- a/apps/desktop/src/components/template-gallery/template-preview.tsx
+++ b/apps/desktop/src/components/template-gallery/template-preview.tsx
@@ -2,7 +2,8 @@ import { useState, useCallback, useEffect, useRef } from "react";
 import { open } from "@tauri-apps/plugin-dialog";
 import { mkdir, writeTextFile } from "@tauri-apps/plugin-fs";
 import { getCurrentWebview } from "@tauri-apps/api/webview";
-import { documentDir } from "@tauri-apps/api/path";
+import { homeDir } from "@tauri-apps/api/path";
+import { toast } from "sonner";
 import {
   ChevronLeftIcon,
   ChevronRightIcon,
@@ -159,9 +160,15 @@ export function TemplatePreview() {
     if (lastProjectFolder) {
       setProjectFolder(lastProjectFolder);
     } else {
-      documentDir()
-        .then((dir) => setProjectFolder(dir))
-        .catch(() => {});
+      homeDir()
+        .then((home) => join(home, "Documents", "ClaudePrism"))
+        .then(async (dir) => {
+          await mkdir(dir, { recursive: true }).catch(() => {});
+          setProjectFolder(dir);
+        })
+        .catch((err) =>
+          console.warn("Failed to resolve default project folder:", err),
+        );
     }
   }, []); // eslint-disable-line react-hooks/exhaustive-deps
 
@@ -400,7 +407,7 @@ export function TemplatePreview() {
 
     try {
       const projectPath = await join(projectFolder, projectName.trim());
-      await mkdir(projectPath, { recursive: true }).catch(() => {});
+      await mkdir(projectPath, { recursive: true });
 
       const mainTexPath = await join(projectPath, template.mainFileName);
       const mainExists = await exists(mainTexPath);
@@ -418,12 +425,12 @@ export function TemplatePreview() {
 
       if (attachments.length > 0) {
         const attachmentsDir = await join(projectPath, "attachments");
-        await mkdir(attachmentsDir, { recursive: true }).catch(() => {});
+        await mkdir(attachmentsDir, { recursive: true });
       }
 
       if (purpose.trim()) {
         const attachmentNames = attachments
-          .map((p) => p.split("/").pop())
+          .map((p) => p.split(/[/\\]/).pop())
           .filter(Boolean);
         const attachmentSection =
           attachmentNames.length > 0
@@ -465,6 +472,9 @@ export function TemplatePreview() {
       closePreview();
     } catch (err) {
       console.error("Failed to create project:", err);
+      toast.error("Failed to create project", {
+        description: err instanceof Error ? err.message : String(err),
+      });
     } finally {
       setIsCreating(false);
     }
@@ -650,7 +660,7 @@ export function TemplatePreview() {
                               >
                                 <PaperclipIcon className="size-3 shrink-0 text-muted-foreground/70" />
                                 <span className="max-w-30 truncate text-foreground/80">
-                                  {path.split("/").pop()}
+                                  {path.split(/[/\\]/).pop()}
                                 </span>
                                 <button
                                   onClick={() => handleRemoveAttachment(path)}
@@ -713,7 +723,7 @@ export function TemplatePreview() {
                       </div>
                       {!locationOpen && projectFolder && projectName.trim() && (
                         <span className="min-w-0 max-w-35 truncate rounded-md bg-muted/40 px-2 py-0.5 font-mono text-[11px] text-muted-foreground/60">
-                          .../{projectFolder.split("/").pop()}/
+                          .../{projectFolder.split(/[/\\]/).pop()}/
                           {projectName.trim()}
                         </span>
                       )}
diff --git a/apps/desktop/src/components/uv-setup.tsx b/apps/desktop/src/components/uv-setup.tsx
index 8d23265..6c614da 100644
--- a/apps/desktop/src/components/uv-setup.tsx
+++ b/apps/desktop/src/components/uv-setup.tsx
@@ -152,8 +152,7 @@ export function UvSetupDialog({ open, onClose }: UvSetupDialogProps) {
                     title={pythonPath}
                   >
                     Python:{" "}
-                    {pythonPath.split("/").pop() ||
-                      pythonPath.split("\\").pop()}
+                    {pythonPath.split(/[/\\]/).pop()}
                   </div>
                 )}
               </div>
diff --git a/apps/desktop/src/components/workspace/history-panel.tsx b/apps/desktop/src/components/workspace/history-panel.tsx
index 5e77fc4..39b0af8 100644
--- a/apps/desktop/src/components/workspace/history-panel.tsx
+++ b/apps/desktop/src/components/workspace/history-panel.tsx
@@ -344,7 +344,7 @@ function SnapshotRow({
             {hasFiles && (
               <div className="mt-0.5 truncate text-muted-foreground text-xs">
                 {snapshot.changed_files
-                  .map((f) => f.split("/").pop())
+                  .map((f) => f.split(/[/\\]/).pop())
                   .join(", ")}
               </div>
             )}
diff --git a/apps/desktop/src/stores/document-store.ts b/apps/desktop/src/stores/document-store.ts
index b77fbb7..dfe74a6 100644
--- a/apps/desktop/src/stores/document-store.ts
+++ b/apps/desktop/src/stores/document-store.ts
@@ -241,7 +241,7 @@ export const useDocumentStore = create<DocumentState>()((set, get) => ({
     for (const f of fsFiles) {
       const pf: ProjectFile = {
         id: f.relativePath,
-        name: f.relativePath.split("/").pop() || f.relativePath,
+        name: f.relativePath.split(/[/\\]/).pop() || f.relativePath,
         relativePath: f.relativePath,
         absolutePath: f.absolutePath,
         type: f.type,
@@ -796,7 +796,7 @@ export const useDocumentStore = create<DocumentState>()((set, get) => ({
     const newAbsPath = await join(state.projectRoot, newRelativePath);
     await renameFileOnDisk(file.absolutePath, newAbsPath);
 
-    const newName = newRelativePath.split("/").pop() || file.name;
+    const newName = newRelativePath.split(/[/\\]/).pop() || file.name;
     migratePdfBytesKey(fileId, newRelativePath);
     set((s) => {
       const compileErrorCache = migrateCacheKey(
@@ -833,7 +833,7 @@ export const useDocumentStore = create<DocumentState>()((set, get) => ({
     const state = get();
     if (!state.projectRoot) return;
 
-    const folderName = folderPath.split("/").pop()!;
+    const folderName = folderPath.split(/[/\\]/).pop()!;
     const newFolderPath = targetFolder
       ? `${targetFolder}/${folderName}`
       : folderName;
@@ -911,7 +911,7 @@ export const useDocumentStore = create<DocumentState>()((set, get) => ({
         // New file on disk
         const pf: ProjectFile = {
           id: fsFile.relativePath,
-          name: fsFile.relativePath.split("/").pop() || fsFile.relativePath,
+          name: fsFile.relativePath.split(/[/\\]/).pop() || fsFile.relativePath,
           relativePath: fsFile.relativePath,
           absolutePath: fsFile.absolutePath,
           type: fsFile.type,
diff --git a/apps/desktop/src/stores/project-store.ts b/apps/desktop/src/stores/project-store.ts
index 59e90c7..e55e6b0 100644
--- a/apps/desktop/src/stores/project-store.ts
+++ b/apps/desktop/src/stores/project-store.ts
@@ -26,7 +26,7 @@ export const useProjectStore = create<ProjectState>()(
       setLastProjectFolder: (path) => set({ lastProjectFolder: path }),
 
       addRecentProject: (path) => {
-        const name = path.split("/").pop() || path;
+        const name = path.split(/[/\\]/).pop() || path;
         set((state) => {
           const filtered = state.recentProjects.filter((p) => p.path !== path);
           return {