diff --git a/.gitmodules b/.gitmodules
index e70e53a..6dc5078 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,6 @@
-[submodule "oidc"]
-	path = third_party/oidc
-	url = https://github.com/cbcoutinho/oidc
 [submodule "third_party/oidc"]
 	path = third_party/oidc
 	url = https://github.com/cbcoutinho/oidc
+[submodule "third_party/notes"]
+	path = third_party/notes
+	url = https://github.com/cbcoutinho/notes
diff --git a/nextcloud_mcp_server/auth/templates/vector_viz.html b/nextcloud_mcp_server/auth/templates/vector_viz.html
index 7756b74..561afb2 100644
--- a/nextcloud_mcp_server/auth/templates/vector_viz.html
+++ b/nextcloud_mcp_server/auth/templates/vector_viz.html
@@ -186,9 +186,9 @@
                         </select>
                     </div>
 
-                    <div class="viz-control-group" style="margin-bottom: 0;" x-show="algorithm === 'bm25_hybrid'">
+                    <div class="viz-control-group" style="margin-bottom: 0;">
                         <label>Fusion Method</label>
-                        <select x-model="fusion">
+                        <select x-model="fusion" :disabled="algorithm !== 'bm25_hybrid'" :style="algorithm !== 'bm25_hybrid' ? 'opacity: 0.5; cursor: not-allowed;' : ''">
                             <option value="rrf" selected>RRF (Reciprocal Rank Fusion)</option>
                             <option value="dbsf">DBSF (Distribution-Based Score Fusion)</option>
                         </select>
@@ -211,24 +211,39 @@
 
                     <div class="viz-advanced-grid">
                         <div class="viz-control-group">
-                            <label>Document Types</label>
-                            <select x-model="docTypes" multiple>
-                                <option value="">All Types (cross-app search)</option>
-                                <option value="note">Notes</option>
-                                <option value="file">Files</option>
-                                <option value="calendar">Calendar Events</option>
-                                <option value="contact">Contacts</option>
-                                <option value="deck">Deck Cards</option>
-                            </select>
-                            <small style="color: #666; display: block; margin-top: 4px;">
-                                Hold Ctrl/Cmd to select multiple
-                            </small>
+                            <label style="display: block; margin-bottom: 8px;">Document Types</label>
+                            <div style="display: grid; grid-template-columns: 1fr; gap: 6px;">
+                                <label style="display: flex; align-items: center; cursor: pointer; font-weight: normal;">
+                                    <input type="checkbox" x-model="docTypes" value="" style="margin-right: 8px;">
+                                    <span>All Types</span>
+                                </label>
+                                <label style="display: flex; align-items: center; cursor: pointer; font-weight: normal;">
+                                    <input type="checkbox" x-model="docTypes" value="note" style="margin-right: 8px;">
+                                    <span>Notes</span>
+                                </label>
+                                <label style="display: flex; align-items: center; cursor: pointer; font-weight: normal;">
+                                    <input type="checkbox" x-model="docTypes" value="file" style="margin-right: 8px;">
+                                    <span>Files</span>
+                                </label>
+                                <label style="display: flex; align-items: center; cursor: pointer; font-weight: normal;">
+                                    <input type="checkbox" x-model="docTypes" value="calendar" style="margin-right: 8px;">
+                                    <span>Calendar Events</span>
+                                </label>
+                                <label style="display: flex; align-items: center; cursor: pointer; font-weight: normal;">
+                                    <input type="checkbox" x-model="docTypes" value="contact" style="margin-right: 8px;">
+                                    <span>Contacts</span>
+                                </label>
+                                <label style="display: flex; align-items: center; cursor: pointer; font-weight: normal;">
+                                    <input type="checkbox" x-model="docTypes" value="deck" style="margin-right: 8px;">
+                                    <span>Deck Cards</span>
+                                </label>
+                            </div>
                         </div>
 
                         <div>
                             <div class="viz-control-group">
                                 <label>Score Threshold (Semantic/Hybrid)</label>
-                                <input type="number" x-model.number="scoreThreshold" min="0" max="1" step="0.1" />
+                                <input type="number" x-model.number="scoreThreshold" min="0" max="1" step="any" />
                             </div>
 
                             <div class="viz-control-group">
@@ -284,7 +299,8 @@
                         </a>
                         <div style="font-size: 14px; color: #666; margin-top: 4px;" x-text="result.excerpt"></div>
                         <div style="font-size: 12px; color: #999; margin-top: 4px;">
-                            Score: <span x-text="result.score.toFixed(3)"></span> |
+                            Raw Score: <span x-text="result.original_score.toFixed(3)"></span>
+                            (<span x-text="(result.score * 100).toFixed(0)"></span>% relative) |
                             Type: <span x-text="result.doc_type"></span>
                         </div>
 
diff --git a/nextcloud_mcp_server/auth/userinfo_routes.py b/nextcloud_mcp_server/auth/userinfo_routes.py
index 335f995..d57806c 100644
--- a/nextcloud_mcp_server/auth/userinfo_routes.py
+++ b/nextcloud_mcp_server/auth/userinfo_routes.py
@@ -737,7 +737,7 @@ async def user_info_html(request: Request) -> HTMLResponse:
                             y: coordinates.map(c => c[1]),
                             mode: 'markers',
                             type: 'scatter',
-                            text: results.map(r => `${{r.title}}<br>Score: ${{r.score.toFixed(3)}}`),
+                            text: results.map(r => `${{r.title}}<br>Raw Score: ${{r.original_score.toFixed(3)}} (${{(r.score * 100).toFixed(0)}}% relative)`),
                             marker: {{
                                 // Multi-channel encoding: size + opacity + color for visual hierarchy
                                 // Power scaling (score^2) amplifies visual differences dramatically
diff --git a/nextcloud_mcp_server/auth/viz_routes.py b/nextcloud_mcp_server/auth/viz_routes.py
index 98925d0..d6776f4 100644
--- a/nextcloud_mcp_server/auth/viz_routes.py
+++ b/nextcloud_mcp_server/auth/viz_routes.py
@@ -184,7 +184,7 @@ async def vector_visualization_search(request: Request) -> JSONResponse:
             search_results = all_results[:limit]
             search_duration = time.perf_counter() - search_start
 
-        # Normalize scores relative to this result set for better visualization
+        # Store original scores and normalize for visualization
         # (best result = 1.0, worst result = 0.0 within THIS result set)
         # This makes visual encoding meaningful regardless of RRF normalization
         if search_results:
@@ -197,8 +197,11 @@ async def vector_visualization_search(request: Request) -> JSONResponse:
                 f"→ [0.0, 1.0]"
             )
 
-            # Rescale each result's score to 0-1 within this result set
+            # Store original score and rescale to 0-1 for visualization
             for r in search_results:
+                # Store original score before normalization
+                r.original_score = r.score
+                # Rescale for visual encoding
                 r.score = (r.score - min_score) / score_range
 
         if not search_results:
@@ -317,7 +320,10 @@ async def vector_visualization_search(request: Request) -> JSONResponse:
                 "doc_type": r.doc_type,
                 "title": r.title,
                 "excerpt": r.excerpt,
-                "score": r.score,
+                "score": r.score,  # Normalized score for visual encoding (0-1)
+                "original_score": getattr(
+                    r, "original_score", r.score
+                ),  # Raw score from algorithm
                 "chunk_start_offset": r.chunk_start_offset,
                 "chunk_end_offset": r.chunk_end_offset,
             }
diff --git a/third_party/notes b/third_party/notes
new file mode 160000
index 0000000..ce08e98
--- /dev/null
+++ b/third_party/notes
@@ -0,0 +1 @@
+Subproject commit ce08e985a7bc58475b857267da1e2a7421235cb7