feat: add streamer mode for privacy during streaming

- Add quick toggle button in InputBar for easy access
- Mask API keys in settings when streamer mode active
- Optional path masking to hide usernames in file paths
- Visual LIVE indicator in both InputBar and StatusBar
- Keyboard shortcut Ctrl+Shift+S for quick toggle
- Privacy section in settings for additional options

Closes #35

src/lib/components/Terminal.svelte

@@ -6,6 +6,7 @@
   import HighlightedText from "./HighlightedText.svelte";
   import { searchState, searchQuery } from "$lib/stores/search";
   import { clipboardStore } from "$lib/stores/clipboard";
+  import { shouldHidePaths, maskPaths } from "$lib/stores/config";
 
   let terminalElement: HTMLDivElement;
   let shouldAutoScroll = true;
@@ -18,6 +19,11 @@
     currentSearchQuery = value;
   });
 
+  let hidePaths = false;
+  shouldHidePaths.subscribe((value) => {
+    hidePaths = value;
+  });
+
   claudeStore.terminalLines.subscribe((value) => {
     lines = value;
   });
@@ -188,9 +194,9 @@
             <span class="terminal-tool-name mr-2">[{line.toolName}]</span>
           {/if}
           {#if line.type === "assistant"}
-            <Markdown content={line.content} searchQuery={currentSearchQuery} />
+            <Markdown content={maskPaths(line.content, hidePaths)} searchQuery={currentSearchQuery} />
           {:else}
-            <HighlightedText content={line.content} searchQuery={currentSearchQuery} />
+            <HighlightedText content={maskPaths(line.content, hidePaths)} searchQuery={currentSearchQuery} />
           {/if}
         </div>
       {/each}