diff --git a/20260111204228-rss_articles.org b/20260111204228-rss_articles.org
index 5ab4cdb..c422ab3 100644
--- a/20260111204228-rss_articles.org
+++ b/20260111204228-rss_articles.org
@@ -2,6 +2,7 @@
 :ID:       3a8274ef-f2fe-486d-9caf-0c56982b9917
 :END:
 #+title: RSS Articles
+#+filetags: :research:articles:
 
 * [[https://blog.pragmaticengineer.com/downdetector-and-the-real-cost-of-no-upstream-dependencies/][Downdetector and the real cost of no upstream dependencies]]
   :PROPERTIES:
diff --git a/all-files.json b/all-files.json
index 17b2206..1bab8f4 100644
--- a/all-files.json
+++ b/all-files.json
@@ -244,11 +244,6 @@
         "title": "haskell_notes",
         "url": "/20241212013207-haskell_notes.html"
       },
-      {
-        "id": "dc9ece84-0b14-4afd-b25a-786cf1618996",
-        "title": "HFDP",
-        "url": "/Head First Design Patterns.html"
-      },
       {
         "id": "086ca3ca-39ec-4d37-b56d-b6d9f51e6873",
         "title": "how-to-solve-leetcode",
diff --git a/all-files.org b/all-files.org
index a09dc03..4e9a946 100644
--- a/all-files.org
+++ b/all-files.org
@@ -67,7 +67,6 @@ This file is auto-generated. Do not edit manually.
 
 * H
 - [[id:347d2663-515b-4d9a-9ee9-7706ee86a845][haskell_notes]]
-- [[id:dc9ece84-0b14-4afd-b25a-786cf1618996][HFDP]]
 - [[id:086ca3ca-39ec-4d37-b56d-b6d9f51e6873][how-to-solve-leetcode]]
 
 * I
diff --git a/book-notes/Head First Design Patterns.org b/book-notes/Head First Design Patterns.org
deleted file mode 100644
index 86bf401..0000000
--- a/book-notes/Head First Design Patterns.org	
+++ /dev/null
@@ -1,60 +0,0 @@
-#+title: HFDP
-
-* Head First Design Patterns
-:PROPERTIES:
-:NOTER_DOCUMENT: ../../../pdfs/bootcamp/Head First Design Patterns.pdf
-:ID:       dc9ece84-0b14-4afd-b25a-786cf1618996
-:END:
-
-** Chapter 1
-:PROPERTIES:
-:NOTER_PAGE: 36
-:END:
-*** Structural:
-The Strategy Pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable. Strategy lets the algorithm vary independently from clients that use it.
-
-- Encapsulate what varies
-
-- Favor composition over inheritance
-
-- Program to interfaces, not implementations
-  
-** Chapter 2
-:PROPERTIES:
-:NOTER_PAGE: 82
-:END:
-*** Observer:
-The Observer Pattern defines a one-to-many dependency between objects so that when
-one object changes state, all of its dependents are notified and updated automatically.
-
-Subjects, or as we also know them, Observables, update Observers using a common
-interface
-
-Observers are loosely coupled in that the Observable knows nothing about them,
-other than that they implement the Observer interface.
-
-You can push or pull data from the Observable when using the pattern (pull is
-considered more “correct”).
-
-Don’t depend on a specific order of notification for your Observers.
-
-Java has several implementations of the Observer Pattern, including the general
-purpose java.util.Observable
-
-- Strive for loosely coupled designs between objects that interact
-** Notes for page 137
-:PROPERTIES:
-:NOTER_PAGE: 137
-:END:
-
-- Classes should be open for extension, but closed for modification.
-** Notes for page 142
-:PROPERTIES:
-:NOTER_PAGE: 142
-:END:
-Notes for the decaroter pattern.
-** Notes for page 143
-:PROPERTIES:
-:NOTER_PAGE: 143
-:END:
-Decorator pattern: The Decorator Pattern attaches additional responsibilities to an object dynamically. Decorators provide a flexible alternative to subclassing for extending functionality.
diff --git a/index.org b/index.org
index d8bb7bb..98d93b6 100644
--- a/index.org
+++ b/index.org
@@ -2,6 +2,7 @@
 :ID:       DE792A73-FD00-4048-82D8-AB6E84E869F2
 :END:
 #+title: Index
+#+filetags: :index:
 
 * [[id:b2fb976a-c23c-4275-8a53-da343c223b97][Brain MOC]]
 
diff --git a/lisp/build.el b/lisp/build.el
index 2785ba3..4002869 100755
--- a/lisp/build.el
+++ b/lisp/build.el
@@ -25,10 +25,10 @@
 (require 'seq)
 (require 'cl-lib)
 
-(setq org-export-with-broken-links t)
+;(setq org-export-with-broken-links t)
 
 (setq org-id-locations-file "~/.emacs.d/.org-id-locations")
- 
+
 (defun z/org-html-wrap-content-for-stack (orig-fun contents info)
   "Wrap Org HTML #content in stack container, leaving postamble outside."
   (let* ((html (funcall orig-fun contents info))
@@ -194,14 +194,6 @@ Created with %c on <a href=\"https://www.archlinux.org/\">Arch</a> <a href=\"htt
 ;; Configure LaTeX image generation
 (setq org-latex-create-formula-image-program 'imagemagick)
 
-(setq org-roam-file-exclude-regexp
-      (concat
-       "\\.sync-conflict-"
-       "\\|all-files\\.org$"
-       "\\|#"
-       "\\|\\.~"
-       "\\|<.*>$"))
-
 (defun my/get-org-roam-backlinks (filename)
   "Return backlinks for the given org-roam file. FILENAME should be the full path to the org-roam file."
   (save-excursion
diff --git a/search-index.py b/search-index.py
index 8d54e89..ebdd946 100644
--- a/search-index.py
+++ b/search-index.py
@@ -25,7 +25,6 @@ def generate_search_index(org_dir, out_file):
     org_dir = Path(org_dir).expanduser()
     out_file = Path(out_file).expanduser()
 
-    # Recursively find all .org files (excluding Emacs lockfiles like .#foo.org)
     org_files = [
         f for f in org_dir.rglob("*.org")
         if not re.search(r"/\.#[^/]+\.org$", str(f))
@@ -34,10 +33,12 @@ def generate_search_index(org_dir, out_file):
     index = []
     for file_path in org_files:
         org_id, title = get_org_id_and_title(file_path)
+        filepath_relative = file_path.relative_to(org_dir).with_suffix('') 
+        
         if org_id:
             index.append({
                 "title": title,
-                "url": f"/{file_path.stem}.html",
+                "url": f"/{filepath_relative}.html",
                 "id": org_id
             })